Yellowknife Weather in September
Yellowknife in September
The short of it: Yellowknife in September averages a high of 11 °C (51 °F) and a low of 5 °C (40 °F), with 37 mm (1.5 in) of rain and about 12 h 49 min of daylight. Rated 4 of 5 for a visit; the best months are July and June. Source: TerraClimate climate normals, 1991–2020.
Average high 11° · low 5° · rain 37 mm · daylight 12 h 49 min
✦✦✦✦ Recommended for a visit · best months: July & June
Thirty years of records give Yellowknife an average September high of 11°, a low of 5° and some 37 mm of rain. Highs fall 7° against August, to near 11°; nights run about 5°. Rain is modest, about 37 mm, the 3rd wettest month.
The sun is up for about 12 h 49 min in mid-September, 193 minutes less than a month before.
For the traveller: pack layers, a wool coat and stout boots. The Almanac rates September 4 of 5 for a visit; the finest months here are July and June.
Against its neighbours, Yellowknife runs cooler than most and drier than most in September. Behchokǫ̀, 94 km to the WNW, is 1° warmer by day.
September in Yellowknife, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 3rd wettest of 12
- Versus August
- 7° colder, 10 mm less rain
- Versus October
- 9° warmer
- Day–night spread
- 6°
- Snow season
- Oct–May
- Daylight, mid-month
- 12 h 49 min
- Average wind
- 15 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Behchokǫ̀Northwest Territories | 94 km WNW | 12° | 3° | 36 mm |
| Hay RiverNorthwest Territories | 197 km SSW | 14° | 4° | 45 mm |
| Fort ProvidenceNorthwest Territories | 211 km SW | 15° | 3° | 31 mm |
| Fort SmithNorthwest Territories | 303 km SSE | 14° | 3° | 46 mm |
| Fort SimpsonNorthwest Territories | 368 km W | 15° | 2° | 42 mm |