| Climate data for Concord Municipal Airport, New Hampshire (1991−2020 normals,[a] extremes 1868–present)[b] | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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: NOAA (snow depth 1991-2023, relative humidity , dew points and sun 1961–1990)[1][2][3] | |||||||||||||
| Source 2: Weather Atlas (UV)[4] | |||||||||||||
- ^ 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
- ^ "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.