Yellowknife in September
6.3out of 10
Possible, with caveats
Cool: highs only around 12°C. Some rain: about 8 rainy days.
12°CAvg high
5°CAvg low
8Rainy days (40 mm)
12:34 hDaylight
07:15Sunrise · 19:49 Sunset
Why this score
- Cool: highs only around 12°C
- Some rain: about 8 rainy days
What to wear and pack
- A warm jacket
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in September is fairly consistent from year to year (3.0 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -22°C | -28°C | 11 mm | 3 | – | – | 4.6 |
| February | -18°C | -26°C | 6 mm | 2 | – | – | 4.8 |
| March | -11°C | -21°C | 10 mm | 3 | – | – | 4.7 |
| April | 0°C | -10°C | 11 mm | 3 | – | – | 4.7 |
| May | 11°C | 0°C | 19 mm | 4 | – | – | 6.6 |
| June | 19°C | 9°C | 25 mm | 5 | – | – | 7.9 |
| July | 22°C | 13°C | 36 mm | 7 | – | – | 8.0 |
| August | 19°C | 11°C | 46 mm | 10 | – | – | 7.3 |
| September | 12°C | 5°C | 40 mm | 8 | – | – | 6.3 |
| October | 2°C | -3°C | 24 mm | 6 | – | – | 4.7 |
| November | -9°C | -15°C | 15 mm | 5 | – | – | 4.5 |
| December | -18°C | -24°C | 11 mm | 4 | – | – | 4.6 |
Frequently asked questions
How hot is Yellowknife in September?
Daytime highs average 12°C and nights about 5°C.
When is the best time to visit Yellowknife?
The best months are July, June.