Statistically, springtime (March/April) and autumn (September/October) contain the most "geomagnetically disturbed days" which means more aurora activity...although you're bound to see the lights in October, November, December, January and February if you spend enough time looking up.
In Yukon, it's dark enough to see the northern lights from about August-through-April. During May, June & July it's just too bright in to see them in the "Land of the Midnight Sun."
In northern regions like the Yukon, the best time to view the aurora is from late August to mid-April. During the summer months the night skies are not dark enough to see the aurora borealis even at times when the solar wind activity is strong. In midwinter the temperatures may fall to the minus 40 degree range and it is important to wear appropriate winter clothing (please see “winter clothing packages”) to enjoy the displays.
Anywhere from 10 minutes to all night long, depending on the magnitude of the incoming solar wind. "Coronal holes" consistently produce nice auroras but big solar flares and CMEs-coronal mass ejections are responsible for global-wide aurora displays…the BIG shows!
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record high °C (°F) | 10.0 (50) |
11.7 (53.1) |
16.8 (62.2) |
21.8 (71.2) |
34.1 (93.4) |
34.4 (93.9) |
33.2 (91.8) |
31.6 (88.9) |
26.7 (80.1) |
19.3 (66.7) |
13.3 (55.9) |
10.6 (51.1) |
34.4 (93.9) |
| Average high °C (°F) | −11.0 (12.2) |
−7.7 (18.1) |
−0.7 (30.7) |
6.6 (43.9) |
13.5 (56.3) |
19.1 (66.4) |
20.6 (69.1) |
18.5 (65.3) |
12.1 (53.8) |
4.2 (39.6) |
−6.0 (21.2) |
−8.5 (16.7) |
5.1 (41.2) |
| Daily mean °C (°F) | −15.2 (4.6) |
−12.7 (9.1) |
−6.3 (20.7) |
1.0 (33.8) |
7.3 (45.1) |
12.3 (54.1) |
14.3 (57.7) |
12.6 (54.7) |
7.2 (45) |
0.5 (32.9) |
−9.4 (15.1) |
−12.5 (9.5) |
−0.1 (31.8) |
| Average low °C (°F) | −19.2 (−2.6) |
−17.6 (0.3) |
−11.9 (10.6) |
−4.6 (23.7) |
1.0 (33.8) |
5.6 (42.1) |
8.0 (46.4) |
6.7 (44.1) |
2.1 (35.8) |
−3.2 (26.2) |
−12.9 (8.8) |
−16.5 (2.3) |
−5.2 (22.6) |
| Record low °C (°F) | −56.1 (−69) |
−51.1 (−60) |
−42.2 (−44) |
−30.6 (−23.1) |
−12.9 (8.8) |
−6.1 (21) |
−2.2 (28) |
−8.3 (17.1) |
−19.4 (−2.9) |
−31.1 (−24) |
−47.2 (−53) |
−48.3 (−54.9) |
−56.1 (−69) |
| Average mm (inches) | 17.8 (0.701) |
11.8 (0.465) |
10.3 (0.406) |
7.0 (0.276) |
16.3 (0.642) |
32.4 (1.276) |
38.1 (1.5) |
35.8 (1.409) |
33.3 (1.311) |
23.2 (0.913) |
20.1 (0.791) |
16.3 (0.642) |
262.3 (10.327) |
| Average rainfall mm (inches) | 0.3 (0.012) |
0.0 (0) |
0.0 (0) |
1.2 (0.047) |
14.3 (0.563) |
32.4 (1.276) |
38.1 (1.5) |
35.5 (1.398) |
29.0 (1.142) |
8.8 (0.346) |
1.0 (0.039) |
0.4 (0.016) |
160.9 (6.335) |
| Average snowfall cm (inches) | 25.4 (10) |
18.3 (7.2) |
14.8 (5.83) |
7.2 (2.83) |
2.0 (0.79) |
0.0 (0) |
0.0 (0) |
0.3 (0.12) |
4.7 (1.85) |
18.6 (7.32) |
27.0 (10.63) |
23.5 (9.25) |
141.8 (55.83) |
| Average precipitation days (≥ 0.2 mm) | 11.2 | 8.3 | 6.4 | 4.4 | 8.0 | 10.9 | 13.5 | 12.5 | 11.9 | 11.5 | 11.5 | 11.2 | 121.2 |
| Average rainy days (≥ 0.2 mm) | 0.2 | 0.1 | 0.1 | 1.1 | 7.5 | 10.9 | 13.5 | 12.4 | 11.0 | 5.1 | 0.8 | 0.3 | 62.9 |
| Average snowy days (≥ 0.2 cm) | 11.9 | 9.1 | 7.0 | 3.8 | 1.2 | 0.0 | 0.0 | 0.3 | 1.5 | 7.9 | 12.4 | 12.2 | 67.4 |
| Average relative humidity (%) | 72.2 | 64.5 | 51.8 | 42.1 | 38.2 | 39.9 | 46.0 | 47.9 | 54.5 | 64.2 | 75.2 | 74.7 | 55.9 |
| Mean monthly sunshine hours | 43.8 | 105.5 | 163.2 | 238.5 | 251.1 | 266.7 | 247.6 | 226.5 | 132.7 | 84.9 | 39.8 | 26.8 | 1,827.1 |
| Percent possible sunshine | 21.4 | 41.6 | 44.8 | 54.4 | 46.8 | 46.9 | 43.8 | 46.4 | 34.1 | 27.0 | 17.8 | 14.9 | 36.7 |
