Climate
Alert has a polar climate. This means it is cold most of the year and, on average, has snow cover for 10 months of the year. The warmest month, July, has an average temperature of just 3.3 °C (37.9 °F). The climate type also means that Alert is very dry, averaging only 153.8 mm (6.06 in) of precipitation per year. Most of the precipitation is snow and occurs during the months of July, August and September. On average there is 16.1 mm (0.63 in) of rain which occurs between June and September. Alert sees very little snowfall during the rest of the year. September is usually the month with the heaviest snowfall. February is the coldest month of the year. Snowfall can occur during any month of the year. Alert experiences polar night from the middle of October, with twilight lasting until the end of the month, until the end of February, with twilight starting about the middle of the month. From the first week of April until the first week of September Alert sees the midnight sun.
| Climate data for Alert | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Humidex | 0 | 0 | -2.4 | -1.1 | 6.6 | 18.1 | 19.4 | 23.8 | 8.4 | 3.9 | -1.1 | 1.4 | 23.8 |
| Record high °C (°F) | 0.0 (32.0) |
1.1 (34.0) |
−2.2 (28.0) |
−0.2 (31.6) |
7.8 (46.0) |
18.2 (64.8) |
20.0 (68.0) |
19.5 (67.1) |
11.2 (52.2) |
4.4 (39.9) |
0.6 (33.1) |
3.2 (37.8) |
20.0 (68.0) |
| Average high °C (°F) | −28.8 (−19.8) |
−29.8 (−21.6) |
−28.7 (−19.7) |
−20.5 (−4.9) |
−8.7 (16.3) |
1.6 (34.9) |
5.9 (42.6) |
3.3 (37.9) |
−6 (21.2) |
−15.8 (3.6) |
−22.8 (−9.0) |
−26.4 (−15.5) |
−14.7 (5.5) |
| Daily mean °C (°F) | −32.4 (−26.3) |
−33.4 (−28.1) |
−32.4 (−26.3) |
−24.4 (−11.9) |
−11.8 (10.8) |
−0.8 (30.6) |
3.3 (37.9) |
0.8 (33.4) |
−9.2 (15.4) |
−19.4 (−2.9) |
−26.4 (−15.5) |
−30.1 (−22.2) |
−18 (−0.4) |
| Average low °C (°F) | −35.9 (−32.6) |
−37 (−34.6) |
−36.1 (−33.0) |
−28.2 (−18.8) |
−14.9 (5.2) |
−3.2 (26.2) |
0.7 (33.3) |
−1.8 (28.8) |
−12.2 (10.0) |
−22.8 (−9.0) |
−30 (−22.0) |
−33.7 (−28.7) |
−21.3 (−6.3) |
| Record low °C (°F) | −48.9 (−56.0) |
−50 (−58.0) |
−49.4 (−56.9) |
−45.6 (−50.1) |
−29 (−20.2) |
−13.9 (7.0) |
−6.3 (20.7) |
−15 (5.0) |
−28.2 (−18.8) |
−39.4 (−38.9) |
−43.5 (−46.3) |
−46.1 (−51.0) |
−50 (−58.0) |
| Wind chill | −64.7 | −60.5 | −59.5 | −56.8 | −40.8 | −21.1 | −10.3 | −19.2 | −36.9 | −49.4 | −53.7 | −57.3 | −64.7 |
| Precipitation mm (inches) | 6.8 (0.268) |
6.3 (0.248) |
7.0 (0.276) |
10.3 (0.406) |
11.0 (0.433) |
11.1 (0.437) |
27.8 (1.094) |
21.2 (0.835) |
23.4 (0.921) |
12.3 (0.484) |
9.7 (0.382) |
6.8 (0.268) |
153.8 (6.055) |
| Rainfall mm (inches) | 0.0 (0) |
0.0 (0) |
0.0 (0) |
0.0 (0) |
0.0 (0) |
0.8 (0.031) |
11.1 (0.437) |
4.0 (0.157) |
0.1 (0.004) |
0.0 (0) |
0.0 (0) |
0.0 (0) |
16.1 (0.634) |
| Snowfall cm (inches) | 8.5 (3.35) |
7.5 (2.95) |
8.1 (3.19) |
11.7 (4.61) |
16.6 (6.54) |
12.3 (4.84) |
17.3 (6.81) |
18.0 (7.09) |
33.6 (13.23) |
18.0 (7.09) |
13.1 (5.16) |
8.7 (3.43) |
173.3 (68.23) |
| Avg. precipitation days | 8.1 | 7.4 | 7.6 | 7.7 | 8.3 | 6.6 | 10.3 | 10.2 | 11.3 | 10.4 | 8.7 | 8.9 | 105.5 |
| Avg. rainy days | 0 | 0 | 0 | 0 | 0.03 | 0.93 | 6 | 3 | 0.28 | 0 | 0 | 0 | 10.3 |
| Avg. snowy days | 8.8 | 7.8 | 8 | 8 | 9 | 6.1 | 6.3 | 8.2 | 11.5 | 11.3 | 9.3 | 9.3 | 103.5 |
| Mean monthly sunshine hours | 0 | n/a | n/a | 345.3 | 418.4 | 321.4 | 293.4 | 239.5 | 92.0 | n/a | 0 | 0 | n/a |
| Source #1: Environment Canada | |||||||||||||
| Source #2: Extremes 1950-2005, precipitation data 1971-1999, all other data 1971-2000, Environment Canada | |||||||||||||
Read more about this topic: CFS Alert
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