| Climate data for Yellowknife (Yellowknife Airport) WMO ID: 71936; coordinates 62°27′46″N 114°26′25″W / 62.46278°N 114.44028°W; elevation: 205.7 m (675 ft); 1991–2020 normals, extremes 1942–present | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high humidex | 2.9 | 6.1 | 8.9 | 20.2 | 25.7 | 34.0 | 35.4 | 34.3 | 27.2 | 18.1 | 6.3 | 1.6 | 35.4 |
| Record high °C (°F) | 3.4 (38.1) |
6.2 (43.2) |
9.3 (48.7) |
20.4 (68.7) |
26.3 (79.3) |
31.1 (88.0) |
32.5 (90.5) |
32.6 (90.7) |
26.1 (79.0) |
19.0 (66.2) |
7.8 (46.0) |
2.8 (37.0) |
32.6 (90.7) |
| Mean daily maximum °C (°F) | −21.6 (−6.9) |
−18.0 (−0.4) |
−10.6 (12.9) |
0.3 (32.5) |
10.4 (50.7) |
18.6 (65.5) |
21.5 (70.7) |
18.4 (65.1) |
10.9 (51.6) |
1.5 (34.7) |
−9.0 (15.8) |
−18.0 (−0.4) |
0.4 (32.7) |
| Daily mean °C (°F) | −25.5 (−13.9) |
−22.7 (−8.9) |
−16.6 (2.1) |
−5.5 (22.1) |
5.3 (41.5) |
13.8 (56.8) |
17.1 (62.8) |
14.5 (58.1) |
7.6 (45.7) |
−1.0 (30.2) |
−12.6 (9.3) |
−21.8 (−7.2) |
−4.0 (24.8) |
| Mean daily minimum °C (°F) | −29.4 (−20.9) |
−27.4 (−17.3) |
−22.5 (−8.5) |
−11.3 (11.7) |
0.1 (32.2) |
9.0 (48.2) |
12.6 (54.7) |
10.5 (50.9) |
4.2 (39.6) |
−3.6 (25.5) |
−16.2 (2.8) |
−25.6 (−14.1) |
−8.3 (17.1) |
| Record low °C (°F) | −51.2 (−60.2) |
−51.2 (−60.2) |
−43.3 (−45.9) |
−40.6 (−41.1) |
−22.8 (−9.0) |
−4.4 (24.1) |
0.6 (33.1) |
−0.6 (30.9) |
−9.7 (14.5) |
−28.9 (−20.0) |
−44.4 (−47.9) |
−48.3 (−54.9) |
−51.2 (−60.2) |
| Record low wind chill | −64.0 | −61.0 | −56.8 | −53.2 | −31.8 | −11.2 | 0.0 | −4.8 | −16.4 | −36.3 | −54.7 | −58.9 | −64.0 |
| Average precipitation mm (inches) | 15.0 (0.59) |
11.0 (0.43) |
14.1 (0.56) |
11.6 (0.46) |
16.3 (0.64) |
28.9 (1.14) |
40.4 (1.59) |
44.0 (1.73) |
43.0 (1.69) |
28.8 (1.13) |
25.8 (1.02) |
15.1 (0.59) |
293.9 (11.57) |
| Average rainfall mm (inches) | 0.0 (0.0) |
0.0 (0.0) |
0.2 (0.01) |
2.9 (0.11) |
12.2 (0.48) |
28.0 (1.10) |
40.4 (1.59) |
44.0 (1.73) |
39.9 (1.57) |
12.0 (0.47) |
0.5 (0.02) |
0.0 (0.0) |
180.2 (7.09) |
| Average snowfall cm (inches) | 21.7 (8.5) |
16.1 (6.3) |
19.2 (7.6) |
9.9 (3.9) |
4.5 (1.8) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
3.0 (1.2) |
20.1 (7.9) |
36.9 (14.5) |
23.7 (9.3) |
155.0 (61.0) |
| Average precipitation days (≥ 0.2 mm) | 11.1 | 9.3 | 8.6 | 4.8 | 5.7 | 7.0 | 9.5 | 11.2 | 12.2 | 13.7 | 14.6 | 11.5 | 119.1 |
| Average rainy days (≥ 0.2 mm) | 0.09 | 0.04 | 0.25 | 1.2 | 4.4 | 6.8 | 9.5 | 11.2 | 11.6 | 5.8 | 0.82 | 0.13 | 51.9 |
| Average snowy days (≥ 0.2 cm) | 12.4 | 10.3 | 9.5 | 4.1 | 1.9 | 0.04 | 0.0 | 0.0 | 1.2 | 9.6 | 16.0 | 13.2 | 78.2 |
| Average relative humidity (%) (at 15:00 LST) | 68.5 | 64.6 | 56.4 | 52.8 | 46.0 | 45.3 | 49.0 | 57.1 | 64.7 | 75.9 | 80.7 | 73.0 | 61.2 |
| Mean monthly sunshine hours | 50.6 | 107.3 | 188.4 | 276.4 | 335.7 | 373.8 | 358.0 | 276.2 | 157.7 | 65.0 | 42.7 | 24.6 | 2,256.5 |
| Percent possible sunshine | 26.8 | 43.5 | 51.8 | 62.2 | 60.8 | 63.0 | 61.2 | 55.5 | 40.3 | 21.0 | 20.2 | 15.4 | 43.5 |
| Average ultraviolet index | 0 | 0 | 1 | 2 | 4 | 5 | 5 | 4 | 2 | 1 | 0 | 0 | 2 |
| Source 1: Environment and Climate Change Canada[1] (sun 1981–2010)[2][3] | |||||||||||||
| Source 2: Weather Atlas[4] | |||||||||||||
Notes
editReferences
- ^ "Canadian Climate Normals 1991–2020". Environment and Climate Change Canada. Archived from the original on 2024-07-05. Retrieved June 12, 2024.
- ^ "Yellowknife A". Canadian Climate Normals 1981–2010. Environment and Climate Change Canada. Climate ID: 2204100. Archived from the original on 5 July 2024. Retrieved 10 March 2015.
- ^ "Daily Data Report for August 2021". Canadian Climate Data. Environment and Climate Change Canada. Climate ID: 2204101. Retrieved 5 July 2024.
- ^ "Yellowknife, Canada - Monthly weather forecast and Climate data". Weather Atlas. Retrieved 3 July 2019.