Template:Mount Washington, New Hampshire weatherbox
| Climate data for Mount Washington, elev. 6,267 ft (1,910.2 m) near the summit (1991–2020 normals, extremes 1933–present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 48 (9) |
48 (9) |
54 (12) |
60 (16) |
66 (19) |
72 (22) |
71 (22) |
72 (22) |
69 (21) |
62 (17) |
52 (11) |
47 (8) |
72 (22) |
| Mean maximum °F (°C) | 38.7 (3.7) |
35.6 (2.0) |
40.8 (4.9) |
49.0 (9.4) |
58.8 (14.9) |
64.5 (18.1) |
65.4 (18.6) |
64.2 (17.9) |
61.4 (16.3) |
53.8 (12.1) |
45.8 (7.7) |
39.8 (4.3) |
67.2 (19.6) |
| Mean daily maximum °F (°C) | 14.9 (−9.5) |
14.8 (−9.6) |
20.8 (−6.2) |
30.7 (−0.7) |
42.5 (5.8) |
51.4 (10.8) |
55.3 (12.9) |
54.2 (12.3) |
49.1 (9.5) |
37.7 (3.2) |
28.4 (−2.0) |
20.1 (−6.6) |
35.0 (1.7) |
| Daily mean °F (°C) | 5.8 (−14.6) |
5.9 (−14.5) |
12.9 (−10.6) |
23.7 (−4.6) |
36.3 (2.4) |
45.5 (7.5) |
49.9 (9.9) |
48.7 (9.3) |
43.1 (6.2) |
31.3 (−0.4) |
20.8 (−6.2) |
11.8 (−11.2) |
28.0 (−2.2) |
| Mean daily minimum °F (°C) | −3.2 (−19.6) |
−3.0 (−19.4) |
4.9 (−15.1) |
16.7 (−8.5) |
30.2 (−1.0) |
39.6 (4.2) |
44.5 (6.9) |
43.2 (6.2) |
37.1 (2.8) |
24.9 (−3.9) |
13.1 (−10.5) |
3.5 (−15.8) |
21.0 (−6.1) |
| Mean minimum °F (°C) | −28.6 (−33.7) |
−25.2 (−31.8) |
−19.4 (−28.6) |
−1.1 (−18.4) |
14.0 (−10.0) |
25.7 (−3.5) |
34.4 (1.3) |
31.4 (−0.3) |
21.3 (−5.9) |
8.3 (−13.2) |
−5.8 (−21.0) |
−20.8 (−29.3) |
−32.3 (−35.7) |
| Record low °F (°C) | −47 (−44) |
−47 (−44) |
−38 (−39) |
−20 (−29) |
−2 (−19) |
8 (−13) |
24 (−4) |
20 (−7) |
9 (−13) |
−5 (−21) |
−26 (−32) |
−46 (−43) |
−47 (−44) |
| Average precipitation inches (mm) | 5.74 (146) |
5.45 (138) |
6.72 (171) |
7.31 (186) |
7.68 (195) |
8.59 (218) |
8.93 (227) |
7.72 (196) |
7.66 (195) |
9.99 (254) |
8.09 (205) |
7.35 (187) |
91.23 (2,317) |
| Average snowfall inches (cm) | 41.4 (105) |
43.3 (110) |
46.2 (117) |
33.1 (84) |
12.9 (33) |
1.3 (3.3) |
0.0 (0.0) |
0.1 (0.25) |
1.2 (3.0) |
19.0 (48) |
35.6 (90) |
47.7 (121) |
281.8 (716) |
| Average extreme snow depth inches (cm) | 14.1 (36) |
16.3 (41) |
17.6 (45) |
14.5 (37) |
6.1 (15) |
0.5 (1.3) |
0.0 (0.0) |
0.0 (0.0) |
0.3 (0.76) |
5.7 (14) |
8.3 (21) |
12.7 (32) |
21.0 (53) |
| Average precipitation days (≥ 0.01 in) | 20.0 | 18.3 | 19.7 | 18.3 | 17.4 | 17.6 | 17.5 | 15.5 | 13.7 | 18.1 | 19.2 | 21.0 | 216.3 |
| Average snowy days (≥ 0.1 in) | 19.6 | 18.1 | 18.0 | 14.1 | 6.5 | 1.2 | 0.2 | 0.2 | 1.3 | 9.9 | 15.1 | 19.7 | 123.9 |
| Mean monthly sunshine hours | 92.0 | 106.9 | 127.6 | 143.2 | 171.3 | 151.3 | 145.0 | 130.5 | 127.2 | 127.1 | 82.4 | 83.1 | 1,487.6 |
| Percent possible sunshine | 32 | 36 | 34 | 35 | 37 | 33 | 31 | 30 | 34 | 37 | 29 | 30 | 33 |
| Source 1: NOAA (sun 1961–1990)[1][2][3] | |||||||||||||
| Source 2: Mount Washington Observatory (extremes 1933–present)[4][5] | |||||||||||||
References[edit]
- ^ "NOWData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Archived from the original on May 2, 2021. Retrieved 2021-05-18.
- ^ "Station: MT WASHINGTON, NH". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). National Oceanic and Atmospheric Administration. Archived from the original on May 12, 2021. Retrieved 2021-05-18.
- ^ "WMO Climate Normals for MOUNT WASHINGTON, NH 1961–1990". National Oceanic and Atmospheric Administration. Archived from the original on May 25, 2017. Retrieved 2014-06-09.
- ^ "Mount Washington Observatory: Normals, Means and Extreme". Mount Washington Observatory. Archived from the original on July 2, 2014. Retrieved 2010-08-07.
- ^ "Today's Weather atop Mount Washington". Mount Washington Observatory. 2013-01-14. Archived from the original on 2013-01-15.