Template:Weather box New London

Climate data for New London (Groton) 1991–2020 normals, extremes 1957–2021
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 69
(21)
67
(19)
78
(26)
88
(31)
91
(33)
95
(35)
101
(38)
99
(37)
93
(34)
87
(31)
79
(26)
69
(21)
101
(38)
Mean maximum °F (°C) 56.6
(13.7)
55.8
(13.2)
65.5
(18.6)
73.6
(23.1)
81.9
(27.7)
88.0
(31.1)
91.6
(33.1)
88.7
(31.5)
84.7
(29.3)
76.5
(24.7)
67.4
(19.7)
60.0
(15.6)
92.6
(33.7)
Mean daily maximum °F (°C) 38.8
(3.8)
40.8
(4.9)
47.3
(8.5)
56.9
(13.8)
66.4
(19.1)
75.2
(24.0)
80.8
(27.1)
79.8
(26.6)
73.6
(23.1)
63.3
(17.4)
53.2
(11.8)
44.1
(6.7)
60.0
(15.6)
Daily mean °F (°C) 31.3
(−0.4)
32.9
(0.5)
39.5
(4.2)
48.9
(9.4)
58.1
(14.5)
67.3
(19.6)
73.4
(23.0)
72.5
(22.5)
65.8
(18.8)
55.2
(12.9)
45.5
(7.5)
36.8
(2.7)
52.3
(11.3)
Mean daily minimum °F (°C) 23.8
(−4.6)
24.9
(−3.9)
31.6
(−0.2)
40.9
(4.9)
49.9
(9.9)
59.3
(15.2)
65.9
(18.8)
65.1
(18.4)
58.0
(14.4)
47.1
(8.4)
37.9
(3.3)
29.5
(−1.4)
44.5
(6.9)
Mean minimum °F (°C) 4.1
(−15.5)
6.9
(−13.9)
14.7
(−9.6)
29.0
(−1.7)
38.1
(3.4)
46.8
(8.2)
56.0
(13.3)
54.2
(12.3)
43.6
(6.4)
32.2
(0.1)
26.6
(−3.0)
14.2
(−9.9)
1.5
(−16.9)
Record low °F (°C) −14
(−26)
−12
(−24)
0
(−18)
14
(−10)
30
(−1)
38
(3)
47
(8)
41
(5)
29
(−2)
22
(−6)
8
(−13)
−10
(−23)
−14
(−26)
Average precipitation inches (mm) 3.91
(99)
3.42
(87)
4.92
(125)
4.40
(112)
3.67
(93)
3.93
(100)
3.42
(87)
4.19
(106)
4.29
(109)
4.42
(112)
3.75
(95)
4.59
(117)
48.91
(1,242)
Average snowfall inches (cm) 5.8
(15)
8.3
(21)
3.9
(9.9)
0.8
(2.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.5
(1.3)
5.2
(13)
24.5
(62)
Average precipitation days (≥ 0.01 in) 11.4 9.7 11.5 11.6 11.9 9.5 9.7 9.3 10.2 10.4 10.0 12.4 127.6
Average snowy days (≥ 0.1 in) 3.1 2.7 1.7 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.9 9.9
Source: NOAA[1][2]
  1. ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved June 2, 2021.
  2. ^ "Station: Groton, CT". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved June 2, 2021.