Climate
Norman Wells has a subarctic climate with summer lasting for about three months. Although winter temperatures are usually below freezing, every month of the year has seen temperatures above zero. Rainfall averages 166.0 millimetres (6.54 in) and snowfall 153.4 centimetres (60.39 in). On average, there are 102.5 days, October to April, when the wind chill is below -30, which indicates that frostbite may occur within 10 – 30 minutes. There is an average of 44.6 days, November to April, when the wind chill is below -40, which indicates that that frostbite may occur within 5 – 10 minutes.
| Climate data for Norman Wells Airport, NWT | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Humidex | 11.8 | 6.3 | 9.4 | 20 | 28.5 | 36.4 | 37.2 | 36 | 27.2 | 19.8 | 12.2 | 4.8 | 37.2 |
| Record high °C (°F) | 11.8 (53.2) |
7.9 (46.2) |
11.1 (52.0) |
20.0 (68.0) |
31.1 (88.0) |
33.5 (92.3) |
35.0 (95.0) |
32.4 (90.3) |
27.1 (80.8) |
20.8 (69.4) |
13.3 (55.9) |
5.7 (42.3) |
35.0 (95.0) |
| Average high °C (°F) | −22.6 (−8.7) |
−20.2 (−4.4) |
−12.5 (9.5) |
0.3 (32.5) |
12.3 (54.1) |
20.7 (69.3) |
22.6 (72.7) |
19.2 (66.6) |
11.1 (52.0) |
−2.1 (28.2) |
−15.8 (3.6) |
−21.2 (−6.2) |
−0.7 (30.7) |
| Daily mean °C (°F) | −26.5 (−15.7) |
−24.7 (−12.5) |
−18.4 (−1.1) |
−5.8 (21.6) |
6.5 (43.7) |
15.0 (59.0) |
17.0 (62.6) |
13.8 (56.8) |
6.6 (43.9) |
−5.3 (22.5) |
−19.3 (−2.7) |
−25.1 (−13.2) |
−5.5 (22.1) |
| Average low °C (°F) | −30.4 (−22.7) |
−29.2 (−20.6) |
−24.3 (−11.7) |
−11.9 (10.6) |
0.7 (33.3) |
9.2 (48.6) |
11.3 (52.3) |
8.3 (46.9) |
1.9 (35.4) |
−8.4 (16.9) |
−22.9 (−9.2) |
−28.9 (−20.0) |
−10.4 (13.3) |
| Record low °C (°F) | −52.2 (−62.0) |
−54.4 (−65.9) |
−46.1 (−51.0) |
−37.2 (−35.0) |
−17.8 (0.0) |
−2.8 (27.0) |
−1.1 (30.0) |
−6.1 (21.0) |
−15.7 (3.7) |
−31.7 (−25.1) |
−42.8 (−45.0) |
−47.8 (−54.0) |
−54.4 (−65.9) |
| Wind chill | −61.7 | −60.2 | −57.5 | −43.8 | −25.1 | −6.9 | −4.5 | −9.6 | −17.7 | −39.9 | −52.4 | −62.4 | −62.4 |
| Precipitation mm (inches) | 17.0 (0.669) |
13.6 (0.535) |
11.5 (0.453) |
11.9 (0.469) |
21.0 (0.827) |
40.8 (1.606) |
41.0 (1.614) |
41.6 (1.638) |
31.2 (1.228) |
26.5 (1.043) |
16.4 (0.646) |
18.2 (0.717) |
290.7 (11.445) |
| Mean monthly sunshine hours | 26.9 | 75.6 | 167.6 | 230.0 | 292.6 | n/a | n/a | 238.0 | 126.1 | 53.7 | n/a | 7.3 | n/a |
| Source #1: Environment Canada | |||||||||||||
| Source #2: Sunshine data from 1961-1990 Environment Canada | |||||||||||||
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