Climate of New England
The climate of New England varies greatly across its 500-mile (800 km) span from northern Maine to southern Connecticut.
In eastern Massachusetts, northern Rhode Island, and northern Connecticut, a hot-summer version of the humid continental climate (Köppen Dfa) prevails. Here summers are hotter and winters shorter with less snowfall. Cities like Boston, Hartford, and Providence generally receive 35 to 50 inches or 0.89 to 1.27 metres of snow annually, although most of this often falls during just a handful of large coastal snowstorms each winter. Summers are often hot and humid, with high temperatures in the lower Connecticut River valley of southern Massachusetts and Connecticut between 85 and 90 °F (29 and 32 °C) regularly during June, July, and August. Convective thunderstorms are common in these months as well, some of which can become severe. The frost-free growing season ranges from 140 days in parts of central Massachusetts to near 160 days across interior Connecticut and most of Rhode Island.[2]
Coastal
Statistics for major cities and states
Northern
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Record high °F (°C) | 66 (19) |
72 (22) |
84 (29) |
91 (33) |
95 (35) |
100 (38) |
100 (38) |
101 (38) |
98 (37) |
86 (30) |
76 (24) |
68 (20) |
101 (38) |
Mean maximum °F (°C) | 51.7 (10.9) |
50.6 (10.3) |
62.0 (16.7) |
78.0 (25.6) |
86.5 (30.3) |
91.4 (33.0) |
92.2 (33.4) |
90.9 (32.7) |
87.0 (30.6) |
76.0 (24.4) |
66.2 (19.0) |
54.2 (12.3) |
94.4 (34.7) |
Mean daily maximum °F (°C) | 28.9 (−1.7) |
31.5 (−0.3) |
40.9 (4.9) |
55.3 (12.9) |
69.0 (20.6) |
77.6 (25.3) |
82.4 (28.0) |
80.7 (27.1) |
72.6 (22.6) |
58.9 (14.9) |
46.4 (8.0) |
35.0 (1.7) |
56.6 (13.7) |
Daily mean °F (°C) | 20.9 (−6.2) |
22.9 (−5.1) |
32.3 (0.2) |
45.6 (7.6) |
58.4 (14.7) |
67.5 (19.7) |
72.4 (22.4) |
70.7 (21.5) |
62.7 (17.1) |
50.3 (10.2) |
39.3 (4.1) |
28.2 (−2.1) |
47.6 (8.7) |
Mean daily minimum °F (°C) | 12.9 (−10.6) |
14.3 (−9.8) |
23.6 (−4.7) |
35.9 (2.2) |
47.8 (8.8) |
57.3 (14.1) |
62.4 (16.9) |
60.7 (15.9) |
52.9 (11.6) |
41.8 (5.4) |
32.1 (0.1) |
21.3 (−5.9) |
38.6 (3.7) |
Mean minimum °F (°C) | −12.7 (−24.8) |
−7.8 (−22.1) |
0.0 (−17.8) |
21.2 (−6.0) |
32.2 (0.1) |
42.3 (5.7) |
50.4 (10.2) |
47.4 (8.6) |
36.2 (2.3) |
26.3 (−3.2) |
13.7 (−10.2) |
−1.6 (−18.7) |
−15.3 (−26.3) |
Record low °F (°C) | −30 (−34) |
−30 (−34) |
−24 (−31) |
2 (−17) |
24 (−4) |
33 (1) |
39 (4) |
35 (2) |
25 (−4) |
15 (−9) |
−3 (−19) |
−29 (−34) |
−30 (−34) |
Average precipitation inches (mm) | 2.13 (54) |
1.77 (45) |
2.24 (57) |
3.07 (78) |
3.76 (96) |
4.26 (108) |
4.06 (103) |
3.54 (90) |
3.67 (93) |
3.83 (97) |
2.70 (69) |
2.50 (64) |
37.53 (953) |
Average snowfall inches (cm) | 21.1 (54) |
19.3 (49) |
17.5 (44) |
4.1 (10) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.3 (0.76) |
5.7 (14) |
19.5 (50) |
87.5 (222) |
Average extreme snow depth inches (cm) | 11 (28) |
12 (30) |
11 (28) |
3 (7.6) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
3 (7.6) |
8 (20) |
12 (30) |
Average precipitation days (≥ 0.01 in) | 14.7 | 12.1 | 12.7 | 13.2 | 13.6 | 13.6 | 12.8 | 11.7 | 11.0 | 12.9 | 13.7 | 15.2 | 157.2 |
Average snowy days (≥ 0.1 in) | 14.3 | 12.1 | 8.7 | 2.9 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 4.6 | 11.6 | 54.7 |
Mean monthly sunshine hours | 126.9 | 146.8 | 190.7 | 206.2 | 251.4 | 270.1 | 301.9 | 258.2 | 201.0 | 159.2 | 91.1 | 91.6 | 2,295.1 |
Percent possible sunshine | 44 | 50 | 52 | 51 | 55 | 58 | 64 | 59 | 53 | 47 | 32 | 33 | 51 |
Average ultraviolet index | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 | 4 |
Source 1: | |||||||||||||
Source 2: Weather Atlas (UV)[8] |
Climate data for Concord Municipal Airport, New Hampshire (1991−2020 normals,[c] extremes 1868–present)[d] | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 72 (22) |
74 (23) |
89 (32) |
95 (35) |
98 (37) |
101 (38) |
102 (39) |
101 (38) |
98 (37) |
92 (33) |
80 (27) |
73 (23) |
102 (39) |
Mean maximum °F (°C) | 52.4 (11.3) |
54.3 (12.4) |
65.6 (18.7) |
81.6 (27.6) |
89.6 (32.0) |
92.8 (33.8) |
93.8 (34.3) |
92.4 (33.6) |
89.0 (31.7) |
79.0 (26.1) |
68.6 (20.3) |
56.9 (13.8) |
96.1 (35.6) |
Mean daily maximum °F (°C) | 31.6 (−0.2) |
34.8 (1.6) |
43.6 (6.4) |
57.5 (14.2) |
69.3 (20.7) |
77.8 (25.4) |
83.0 (28.3) |
81.7 (27.6) |
73.7 (23.2) |
60.9 (16.1) |
48.4 (9.1) |
37.1 (2.8) |
58.3 (14.6) |
Daily mean °F (°C) | 22.3 (−5.4) |
24.7 (−4.1) |
33.4 (0.8) |
45.4 (7.4) |
56.7 (13.7) |
65.8 (18.8) |
71.1 (21.7) |
69.5 (20.8) |
61.4 (16.3) |
49.3 (9.6) |
38.6 (3.7) |
28.3 (−2.1) |
47.2 (8.4) |
Mean daily minimum °F (°C) | 12.9 (−10.6) |
14.7 (−9.6) |
23.3 (−4.8) |
33.3 (0.7) |
44.1 (6.7) |
53.7 (12.1) |
59.2 (15.1) |
57.2 (14.0) |
49.0 (9.4) |
37.8 (3.2) |
28.7 (−1.8) |
19.5 (−6.9) |
36.1 (2.3) |
Mean minimum °F (°C) | −9.2 (−22.9) |
−7.2 (−21.8) |
1.6 (−16.9) |
19.2 (−7.1) |
29.2 (−1.6) |
39.0 (3.9) |
47.1 (8.4) |
44.1 (6.7) |
32.1 (0.1) |
22.1 (−5.5) |
11.8 (−11.2) |
−0.9 (−18.3) |
−12.4 (−24.7) |
Record low °F (°C) | −35 (−37) |
−37 (−38) |
−20 (−29) |
4 (−16) |
21 (−6) |
26 (−3) |
33 (1) |
29 (−2) |
20 (−7) |
10 (−12) |
−17 (−27) |
−24 (−31) |
−37 (−38) |
Average precipitation inches (mm) | 2.80 (71) |
2.75 (70) |
3.28 (83) |
3.43 (87) |
3.47 (88) |
3.77 (96) |
3.62 (92) |
3.63 (92) |
3.63 (92) |
4.43 (113) |
3.44 (87) |
3.70 (94) |
41.95 (1,066) |
Average snowfall inches (cm) | 17.1 (43) |
16.9 (43) |
13.6 (35) |
2.5 (6.4) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.8 (2.0) |
2.5 (6.4) |
14.3 (36) |
67.7 (172) |
Average extreme snow depth inches (cm) | 12 (30) |
15 (38) |
13 (33) |
4 (10) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
1 (2.5) |
2 (5.1) |
9 (23) |
15 (38) |
Average precipitation days (≥ 0.01 in) | 11.2 | 10.0 | 11.5 | 11.4 | 12.4 | 12.8 | 10.9 | 9.9 | 9.3 | 10.6 | 10.8 | 12.0 | 132.8 |
Average snowy days (≥ 0.1 in) | 8.1 | 7.6 | 5.2 | 1.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 1.6 | 6.3 | 30.3 |
Average relative humidity (%)
|
67.9 | 66.0 | 64.8 | 62.0 | 65.0 | 70.9 | 71.8 | 74.5 | 76.3 | 72.8 | 73.3 | 72.3 | 69.8 |
Average dew point °F (°C) | 10.2 (−12.1) |
12.0 (−11.1) |
20.8 (−6.2) |
29.8 (−1.2) |
42.1 (5.6) |
53.8 (12.1) |
58.8 (14.9) |
57.9 (14.4) |
50.5 (10.3) |
38.3 (3.5) |
28.8 (−1.8) |
16.7 (−8.5) |
35.0 (1.7) |
Mean monthly sunshine hours | 162.8 | 171.8 | 210.5 | 223.2 | 258.4 | 274.3 | 295.8 | 261.9 | 214.7 | 183.4 | 127.8 | 134.8 | 2,519.4 |
Percent possible sunshine | 56 | 58 | 57 | 56 | 57 | 60 | 64 | 61 | 57 | 54 | 44 | 48 | 56 |
Average ultraviolet index | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 | 5 |
Source 1: | |||||||||||||
Source 2: Weather Atlas (UV)[12] |
Climate data for Portland International Jetport, Maine (1991–2020 normals,[e] extremes 1871–present[f]) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 67 (19) |
68 (20) |
88 (31) |
92 (33) |
96 (36) |
98 (37) |
103 (39) |
103 (39) |
96 (36) |
88 (31) |
75 (24) |
71 (22) |
103 (39) |
Mean maximum °F (°C) | 51.8 (11.0) |
51.5 (10.8) |
61.2 (16.2) |
74.5 (23.6) |
85.4 (29.7) |
89.2 (31.8) |
91.6 (33.1) |
90.0 (32.2) |
86.6 (30.3) |
75.3 (24.1) |
65.4 (18.6) |
55.6 (13.1) |
93.5 (34.2) |
Mean daily maximum °F (°C) | 32.4 (0.2) |
35.0 (1.7) |
42.3 (5.7) |
53.8 (12.1) |
64.2 (17.9) |
73.6 (23.1) |
79.5 (26.4) |
78.7 (25.9) |
71.1 (21.7) |
59.5 (15.3) |
48.4 (9.1) |
38.3 (3.5) |
56.4 (13.6) |
Daily mean °F (°C) | 24.0 (−4.4) |
26.2 (−3.2) |
34.1 (1.2) |
44.6 (7.0) |
54.9 (12.7) |
64.3 (17.9) |
70.4 (21.3) |
69.2 (20.7) |
61.6 (16.4) |
50.3 (10.2) |
40.0 (4.4) |
30.3 (−0.9) |
47.5 (8.6) |
Mean daily minimum °F (°C) | 15.6 (−9.1) |
17.3 (−8.2) |
26.0 (−3.3) |
35.4 (1.9) |
45.5 (7.5) |
55.0 (12.8) |
61.2 (16.2) |
59.7 (15.4) |
52.1 (11.2) |
41.0 (5.0) |
31.7 (−0.2) |
22.4 (−5.3) |
38.6 (3.7) |
Mean minimum °F (°C) | −6.1 (−21.2) |
−2.2 (−19.0) |
6.4 (−14.2) |
23.7 (−4.6) |
33.1 (0.6) |
43.4 (6.3) |
51.7 (10.9) |
48.6 (9.2) |
37.1 (2.8) |
26.5 (−3.1) |
16.0 (−8.9) |
3.9 (−15.6) |
−9.0 (−22.8) |
Record low °F (°C) | −26 (−32) |
−39 (−39) |
−21 (−29) |
8 (−13) |
23 (−5) |
33 (1) |
40 (4) |
33 (1) |
23 (−5) |
15 (−9) |
−6 (−21) |
−21 (−29) |
−39 (−39) |
Average precipitation inches (mm) | 3.50 (89) |
3.54 (90) |
4.08 (104) |
4.41 (112) |
3.67 (93) |
4.15 (105) |
3.43 (87) |
3.57 (91) |
3.77 (96) |
5.25 (133) |
4.25 (108) |
4.50 (114) |
48.12 (1,222) |
Average snowfall inches (cm) | 18.6 (47) |
16.6 (42) |
13.6 (35) |
2.8 (7.1) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.2 (0.51) |
2.3 (5.8) |
14.6 (37) |
68.7 (174) |
Average precipitation days (≥ 0.01 in) | 11.2 | 10.2 | 11.3 | 11.1 | 12.5 | 11.7 | 10.8 | 9.4 | 9.3 | 10.9 | 10.7 | 12.3 | 131.4 |
Average snowy days (≥ 0.1 in) | 7.6 | 7.0 | 5.1 | 1.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 1.5 | 6.0 | 28.6 |
Average relative humidity (%)
|
66.8 | 65.2 | 66.3 | 66.8 | 71.1 | 74.7 | 75.3 | 76.3 | 76.7 | 73.9 | 72.6 | 70.2 | 71.3 |
Average dew point °F (°C) | 11.5 (−11.4) |
12.9 (−10.6) |
21.7 (−5.7) |
30.9 (−0.6) |
42.6 (5.9) |
53.1 (11.7) |
59.2 (15.1) |
58.5 (14.7) |
50.9 (10.5) |
39.7 (4.3) |
30.0 (−1.1) |
17.4 (−8.1) |
35.7 (2.1) |
Mean monthly sunshine hours | 164.8 | 172.8 | 205.2 | 213.5 | 243.2 | 259.1 | 282.2 | 267.6 | 229.1 | 195.7 | 138.7 | 140.9 | 2,512.8 |
Percent possible sunshine | 57 | 59 | 55 | 53 | 53 | 56 | 60 | 62 | 61 | 57 | 48 | 51 | 56 |
Average ultraviolet index | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 | 4 |
Source 1: | |||||||||||||
Source 2: Weather Atlas (UV)[17] |
Water temperatures | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Average sea temperature °F (°C) | 41.3 (5.2) |
38.8 (3.8) |
38.0 (3.3) |
41.6 (5.3) |
46.7 (8.1) |
54.6 (12.6) |
61.3 (16.3) |
63.7 (17.7) |
60.5 (15.8) |
54.9 (12.8) |
49.6 (9.8) |
45.3 (7.4) |
49.7 (9.8) |
Source: Weather Atlas [17] |
Central
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Record high °F (°C) | 74 (23) |
73 (23) |
89 (32) |
94 (34) |
97 (36) |
100 (38) |
104 (40) |
102 (39) |
102 (39) |
90 (32) |
83 (28) |
76 (24) |
104 (40) |
Mean maximum °F (°C) | 58.3 (14.6) |
57.9 (14.4) |
67.0 (19.4) |
79.9 (26.6) |
88.1 (31.2) |
92.2 (33.4) |
95.0 (35.0) |
93.7 (34.3) |
88.9 (31.6) |
79.6 (26.4) |
70.2 (21.2) |
61.2 (16.2) |
96.4 (35.8) |
Mean daily maximum °F (°C) | 36.8 (2.7) |
39.0 (3.9) |
45.5 (7.5) |
56.4 (13.6) |
66.5 (19.2) |
76.2 (24.6) |
82.1 (27.8) |
80.4 (26.9) |
73.1 (22.8) |
62.1 (16.7) |
51.6 (10.9) |
42.2 (5.7) |
59.3 (15.2) |
Daily mean °F (°C) | 29.9 (−1.2) |
31.8 (−0.1) |
38.3 (3.5) |
48.6 (9.2) |
58.4 (14.7) |
68.0 (20.0) |
74.1 (23.4) |
72.7 (22.6) |
65.6 (18.7) |
54.8 (12.7) |
44.7 (7.1) |
35.7 (2.1) |
51.9 (11.1) |
Mean daily minimum °F (°C) | 23.1 (−4.9) |
24.6 (−4.1) |
31.1 (−0.5) |
40.8 (4.9) |
50.3 (10.2) |
59.7 (15.4) |
66.0 (18.9) |
65.1 (18.4) |
58.2 (14.6) |
47.5 (8.6) |
37.9 (3.3) |
29.2 (−1.6) |
44.5 (6.9) |
Mean minimum °F (°C) | 4.8 (−15.1) |
8.3 (−13.2) |
15.6 (−9.1) |
31.0 (−0.6) |
41.2 (5.1) |
49.7 (9.8) |
58.6 (14.8) |
57.7 (14.3) |
46.7 (8.2) |
35.1 (1.7) |
24.4 (−4.2) |
13.1 (−10.5) |
2.6 (−16.3) |
Record low °F (°C) | −13 (−25) |
−18 (−28) |
−8 (−22) |
11 (−12) |
31 (−1) |
41 (5) |
50 (10) |
46 (8) |
34 (1) |
25 (−4) |
−2 (−19) |
−17 (−27) |
−18 (−28) |
Average precipitation inches (mm) | 3.39 (86) |
3.21 (82) |
4.17 (106) |
3.63 (92) |
3.25 (83) |
3.89 (99) |
3.27 (83) |
3.23 (82) |
3.56 (90) |
4.03 (102) |
3.66 (93) |
4.30 (109) |
43.59 (1,107) |
Average snowfall inches (cm) | 14.3 (36) |
14.4 (37) |
9.0 (23) |
1.6 (4.1) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.2 (0.51) |
0.7 (1.8) |
9.0 (23) |
49.2 (125) |
Average extreme snow depth inches (cm) | 7 (18) |
7 (18) |
4 (10) |
1 (2.5) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
1 (2.5) |
4 (10) |
7 (18) |
Average precipitation days (≥ 0.01 in) | 11.8 | 10.6 | 11.6 | 11.6 | 11.8 | 10.9 | 9.4 | 9.0 | 9.0 | 10.5 | 10.3 | 11.9 | 128.4 |
Average snowy days (≥ 0.1 in) | 6.6 | 6.2 | 4.4 | 0.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.6 | 4.2 | 23.0 |
Average relative humidity (%)
|
62.3 | 62.0 | 63.1 | 63.0 | 66.7 | 68.5 | 68.4 | 70.8 | 71.8 | 68.5 | 67.5 | 65.4 | 66.5 |
Average dew point °F (°C) | 16.5 (−8.6) |
17.6 (−8.0) |
25.2 (−3.8) |
33.6 (0.9) |
45.0 (7.2) |
55.2 (12.9) |
61.0 (16.1) |
60.4 (15.8) |
53.8 (12.1) |
42.8 (6.0) |
33.4 (0.8) |
22.1 (−5.5) |
38.9 (3.8) |
Mean monthly sunshine hours | 163.4 | 168.4 | 213.7 | 227.2 | 267.3 | 286.5 | 300.9 | 277.3 | 237.1 | 206.3 | 143.2 | 142.3 | 2,633.6 |
Percent possible sunshine | 56 | 57 | 58 | 57 | 59 | 63 | 65 | 64 | 63 | 60 | 49 | 50 | 59 |
Average ultraviolet index | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 8 | 6 | 4 | 2 | 1 | 5 |
Source 1: NOAA (snow depth 1971-2005, relative humidity, dew point and sun 1961−1990)[19][20][21] | |||||||||||||
Source 2: Weather Atlas (UV)[22] |
Climate data for Boston, Massachusetts | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Average sea temperature °F (°C) | 41.3 (5.2) |
38.1 (3.4) |
38.4 (3.5) |
43.1 (6.2) |
49.2 (9.5) |
58.4 (14.7) |
65.7 (18.7) |
67.9 (20.0) |
64.8 (18.2) |
59.4 (15.3) |
52.3 (11.3) |
46.6 (8.2) |
52.1 (11.2) |
Source: Weather Atlas[22] |
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Record high °F (°C) | 70 (21) |
72 (22) |
90 (32) |
98 (37) |
96 (36) |
98 (37) |
102 (39) |
104 (40) |
100 (38) |
88 (31) |
81 (27) |
77 (25) |
104 (40) |
Mean maximum °F (°C) | 58.7 (14.8) |
57.9 (14.4) |
67.1 (19.5) |
79.3 (26.3) |
87.2 (30.7) |
91.5 (33.1) |
94.8 (34.9) |
92.7 (33.7) |
87.6 (30.9) |
78.9 (26.1) |
70.1 (21.2) |
61.5 (16.4) |
96.6 (35.9) |
Mean daily maximum °F (°C) | 38.3 (3.5) |
40.5 (4.7) |
47.7 (8.7) |
58.9 (14.9) |
68.9 (20.5) |
77.7 (25.4) |
83.6 (28.7) |
82.2 (27.9) |
74.8 (23.8) |
63.8 (17.7) |
53.2 (11.8) |
43.4 (6.3) |
61.1 (16.2) |
Daily mean °F (°C) | 30.2 (−1.0) |
32.0 (0.0) |
38.9 (3.8) |
49.3 (9.6) |
59.1 (15.1) |
68.2 (20.1) |
74.4 (23.6) |
73.0 (22.8) |
65.6 (18.7) |
54.4 (12.4) |
44.5 (6.9) |
35.5 (1.9) |
52.1 (11.2) |
Mean daily minimum °F (°C) | 22.1 (−5.5) |
23.5 (−4.7) |
30.2 (−1.0) |
39.6 (4.2) |
49.2 (9.6) |
58.8 (14.9) |
65.2 (18.4) |
63.9 (17.7) |
56.5 (13.6) |
45.1 (7.3) |
35.8 (2.1) |
27.6 (−2.4) |
43.1 (6.2) |
Mean minimum °F (°C) | 4.1 (−15.5) |
7.4 (−13.7) |
15.1 (−9.4) |
28.5 (−1.9) |
38.1 (3.4) |
47.2 (8.4) |
56.2 (13.4) |
54.3 (12.4) |
43.1 (6.2) |
31.7 (−0.2) |
21.8 (−5.7) |
12.3 (−10.9) |
2.0 (−16.7) |
Record low °F (°C) | −13 (−25) |
−17 (−27) |
1 (−17) |
11 (−12) |
29 (−2) |
39 (4) |
48 (9) |
40 (4) |
32 (0) |
20 (−7) |
6 (−14) |
−12 (−24) |
−17 (−27) |
Average precipitation inches (mm) | 3.96 (101) |
3.44 (87) |
4.90 (124) |
4.29 (109) |
3.37 (86) |
3.81 (97) |
2.91 (74) |
3.59 (91) |
4.17 (106) |
4.18 (106) |
4.27 (108) |
4.65 (118) |
47.54 (1,208) |
Average snowfall inches (cm) | 10.3 (26) |
10.5 (27) |
6.4 (16) |
0.6 (1.5) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.2 (0.51) |
1.0 (2.5) |
7.6 (19) |
36.6 (93) |
Average precipitation days (≥ 0.01 in) | 11.2 | 10.3 | 11.6 | 11.7 | 12.2 | 10.8 | 9.3 | 9.1 | 9.1 | 10.2 | 9.6 | 11.9 | 127.0 |
Average snowy days (≥ 0.1 in) | 5.7 | 5.4 | 3.7 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.6 | 3.4 | 19.3 |
Average relative humidity (%)
|
63.9 | 63.0 | 62.9 | 61.4 | 66.6 | 70.1 | 71.0 | 72.5 | 73.0 | 70.2 | 68.9 | 67.0 | 67.5 |
Average dew point °F (°C) | 16.3 (−8.7) |
17.4 (−8.1) |
25.0 (−3.9) |
33.1 (0.6) |
45.0 (7.2) |
55.6 (13.1) |
61.5 (16.4) |
61.0 (16.1) |
53.8 (12.1) |
42.6 (5.9) |
33.3 (0.7) |
22.1 (−5.5) |
38.9 (3.8) |
Mean monthly sunshine hours | 171.7 | 172.6 | 215.6 | 225.1 | 254.9 | 274.1 | 290.6 | 262.8 | 233.0 | 208.7 | 148.0 | 148.6 | 2,605.7 |
Percent possible sunshine | 58 | 58 | 58 | 56 | 57 | 60 | 63 | 61 | 62 | 61 | 50 | 52 | 58 |
Average ultraviolet index | 1 | 2 | 4 | 6 | 7 | 8 | 8 | 8 | 6 | 4 | 2 | 1 | 5 |
Source 1: | |||||||||||||
Source 2: Weather Atlas [27] |
Climate data for Providence | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Average sea temperature °F (°C) | 41.4 (5.2) |
38.1 (3.4) |
38.7 (3.8) |
44.1 (6.7) |
50.9 (10.5) |
59.6 (15.3) |
67.0 (19.4) |
69.3 (20.7) |
66.7 (19.3) |
61.6 (16.4) |
54.2 (12.3) |
47.7 (8.8) |
53.3 (11.8) |
Source: Weather Atlas [27] |
Southern coastal
Climate data for Bridgeport, Connecticut (Sikorsky Airport), 1990–2020 normals, extremes 1948–present | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Record high °F (°C) | 68 (20) |
67 (19) |
84 (29) |
91 (33) |
97 (36) |
97 (36) |
103 (39) |
100 (38) |
99 (37) |
89 (32) |
78 (26) |
76 (24) |
103 (39) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mean maximum °F (°C) | 55.2 (12.9) |
55.4 (13.0) |
65.8 (18.8) |
76.4 (24.7) |
83.7 (28.7) |
89.9 (32.2) |
92.9 (33.8) |
91.4 (33.0) |
85.1 (29.5) |
76.6 (24.8) |
67.4 (19.7) |
58.6 (14.8) |
94.6 (34.8) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mean daily maximum °F (°C) | 38.4 (3.6) |
40.5 (4.7) |
47.4 (8.6) |
58.3 (14.6) |
68.4 (20.2) |
77.7 (25.4) |
83.4 (28.6) |
81.9 (27.7) |
75.4 (24.1) |
64.4 (18.0) |
53.6 (12.0) |
43.8 (6.6) |
61.1 (16.2) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Daily mean °F (°C) | 31.2 (−0.4) |
33.1 (0.6) |
39.9 (4.4) |
50.0 (10.0) |
60.0 (15.6) |
69.6 (20.9) |
75.7 (24.3) |
74.5 (23.6) |
67.6 (19.8) |
56.4 (13.6) |
46.0 (7.8) |
37.0 (2.8) |
53.4 (11.9) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mean daily minimum °F (°C) | 24.4 (−4.2) |
25.7 (−3.5) |
32.3 (0.2) |
41.7 (5.4) |
51.7 (10.9) |
61.5 (16.4) |
67.9 (19.9) |
67.0 (19.4) |
59.8 (15.4) |
48.3 (9.1) |
38.4 (3.6) |
30.2 (−1.0) |
45.4 (7.4) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mean minimum °F (°C) | 5.3 (−14.8) |
9.8 (−12.3) |
16.3 (−8.7) |
30.0 (−1.1) |
39.7 (4.3) |
49.5 (9.7) |
57.0 (13.9) |
54.9 (12.7) |
44.6 (7.0) |
33.4 (0.8) |
23.8 (−4.6) |
12.9 (−10.6) |
3.5 (−15.8) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Record low °F (°C) | −7 (−22) |
−6 (−21) |
4 (−16) |
18 (−8) |
31 (−1) |
41 (5) |
49 (9) |
44 (7) |
36 (2) |
26 (−3) |
13 (−11) |
−4 (−20) |
−7 (−22) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average precipitation inches (mm) | 3.10 (79) |
2.79 (71) |
4.05 (103) |
4.13 (105) |
3.80 (97) |
3.61 (92) |
3.46 (88) |
3.96 (101) |
3.48 (88) |
3.64 (92) |
3.39 (86) |
3.33 (85) |
42.74 (1,087) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average snowfall inches (cm) | 7.7 (20) |
8.1 (21) |
5.1 (13) |
0.9 (2.3) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0.7 (1.8) |
5.1 (13) |
27.6 (71.1) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average precipitation days (≥ 0.01 inch) | 10.9 | 9.7 | 11.3 | 11.0 | 11.8 | 11.1 | 8.9 | 8.9 | 8.2 | 8.8 | 10.0 | 11.1 | 121.7 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average snowy days (≥ 0.1 inch) | 4.8 | 3.5 | 2.4 | 0.3 | 0 | 0 | 0 | 0 | 0 | 0 | 0.5 | 3.1 | 14.6 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Source: NOAA[28][29]
|
See also
Notes
- ^ Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020.
- ^ Official records for Burlington were kept at downtown from December 1883 to 3 June 1943, and at Burlington Int'l since 4 June 1943. For more information, see ThreadEx
- ^ Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020.
- ^ Official records for Concord were kept at downtown from September 1868 to April 1941 and at Concord Municipal Airport since May 1941; snow records date from December 1942. For more information, see ThreadEx
- ^ Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020.
- ^ Official records for Portland were kept at downtown from March 1871 to 24 November 1940, and at Portland Int'l Jetport (PWM) since 25 November 1940. Temperature records are limited to the period that PWM was the official site (i.e. since 1940) and are based on the Monthly Weather Summary product issued by the NWS office in Gray, Maine.[13] precipitation and snowfall records date to 1871 and 1882, respectively.
- ^ Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020.
- ^ Official records for Boston were kept at downtown from January 1872 to December 1935, and at Logan Airport (KBOS) since January 1936.[18]
- ^ Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020.
- ^ Official records for Providence kept at downtown from November 1904 to May 1932 and at T. F. Green Airport since June 1932.[23]
Notes
- ^ "'Flash droughts' and weather 'whiplash.' Welcome to New England's climate future".
- ^ "Gardening in New England".
- ^ "Intellicast - New London Historic Weather Averages in Connecticut (06320)". www.intellicast.com. Retrieved 2018-06-14.
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved May 17, 2021.
- ^ "Station: BURLINGTON INTL AP, VT". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on 2023-09-08. Retrieved May 17, 2021.
- ^ "Burlington Vermont Temperature Extremes" (PDF). National Oceanic and Atmospheric Administration. Archived from the original (PDF) on 2023-09-08. Retrieved June 17, 2021.
- ^ "WMO Climate Normals for BURLINGTON/ETHAN ALLEN AIRPOR,VT 1961–1990". National Oceanic and Atmospheric Administration. Archived from the original on 2023-09-08. Retrieved March 11, 2014.
- ^ "Burlington, Vermont, USA - Monthly weather forecast and Climate data". Weather Atlas. Retrieved July 4, 2019.
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved May 18, 2021.
- ^ "Station: CONCORD MUNI AP, NH". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on 2023-07-10. Retrieved May 18, 2021.
- ^ "WMO Climate Normals for CONCORD MUNICIPAL AP, NH 1961–1990". National Oceanic and Atmospheric Administration. Archived from the original on 2023-07-10. Retrieved March 11, 2014.
- ^ "Concord, New Hampshire, USA - Monthly weather forecast and Climate data". Weather Atlas. Retrieved July 4, 2019.
- ^ "Observed Weather Reports". National Oceanic and Atmospheric Administration. Retrieved 2016-09-12.
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved May 20, 2021.
- ^ "Station: Portland INTL Jetport, ME". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on 2023-06-17. Retrieved May 20, 2021.
- ^ "Portland INTL Jetport Climate Normals 1961–1990". National Oceanic and Atmospheric Administration. Archived from the original on 2023-06-17. Retrieved May 20, 2021.
- ^ a b "Portland, Maine, USA - Monthly weather forecast and Climate data". Weather Atlas. Retrieved July 4, 2019.
- ^ ThreadEx
- ^ "Summary of Monthly Normals 1991–2020". National Oceanic and Atmospheric Administration. Retrieved May 4, 2021.
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved May 24, 2021.
- ^ "WMO Climate Normals for BOSTON/LOGAN INT'L AIRPORT, MA 1961–1990". National Oceanic and Atmospheric Administration. Retrieved July 18, 2020.
- ^ a b "Boston, Massachusetts, USA - Monthly weather forecast and Climate data". Weather Atlas. Retrieved July 4, 2019.
- ^ ThreadEx
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved May 30, 2021.
- ^ "Station: Providence T F Green AP, RI". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on 2023-06-24. Retrieved May 30, 2021.
- ^ "WMO Climate Normals for PROVIDENCE/GREEN STATE, RI 1961–1990". National Oceanic and Atmospheric Administration. Archived from the original on 2023-06-24. Retrieved September 17, 2020.
- ^ a b "Providence, Rhode Island, USA - Monthly weather forecast and Climate data". Weather Atlas. Retrieved July 4, 2019.
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved 2018-01-08.
- ^ "Station Name: CT BRIDGEPORT SIKORSKY MEM AP". National Oceanic and Atmospheric Administration. Retrieved 2015-02-26.
- ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved May 30, 2021.
- ^ "Station: Edgartown, MA". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). National Oceanic and Atmospheric Administration. Retrieved May 30, 2021.
- ^ "NowData - NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved May 30, 2021.
- ^ "Station: Nantucket Mem AP, MA". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). National Oceanic and Atmospheric Administration. Retrieved May 30, 2021.
- ^ "General Climate Summary Tables". Western Regional Climate Center. Retrieved February 19, 2015.