Climate averages 1991–2020
Edmonton weather
in September.
A mild, fairly dry month: the 4th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Edmonton: daytime highs average 16.7°C and nights cool to about 7.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 38 mm of rain on roughly 7 days, which makes September a fairly dry month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average September day.
The nearest other city in this atlas is Sherwood Park (11 km away). In September its highs average 16.0°C, 0.7°C cooler than Edmonton, with 38 mm of rain.
Among the 86 cities listed in Canada, Edmonton ranks 81st of 86 for the warmest September highs and joint 3rd of 86 for the driest September (rainfall, lowest first). The mean September high of those 86 cities is 19.8°C; Edmonton is 3.1°C cooler than that mean.
From September to October, average highs fall by 7.7°C to 8.9°C, and monthly rainfall falls from 38 mm to 23 mm.
The annual picture
September in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Edmonton climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -7.9°C-16.4°C | -16.4°C | 18 | 5.6 | 8.18 h |
| February | -4.9°C-14.4°C | -14.4°C | 11 | 3.4 | 9.810 h |
| March | 0.5°C-9.2°C | -9.2°C | 16 | 5.0 | 11.812 h |
| April | 9.4°C-1.7°C | -1.7°C | 32 | 6.5 | 14.014 h |
| May | 16.2°C5.2°C | 5.2°C | 53 | 8.3 | 15.916 h |
| June | 19.8°C10.3°C | 10.3°C | 86 | 13.3 | 16.917 h |
| July | 22.4°C13.0°C | 13.0°C | 88 | 13.3 | 16.516 h |
| August | 21.7°C12.1°C | 12.1°C | 58 | 9.7 | 14.815 h |
| September, selected | 16.7°C7.2°C | 7.2°C | 38 | 7.0 | 12.813 h |
| October | 8.9°C0.3°C | 0.3°C | 23 | 5.6 | 10.611 h |
| November | -0.7°C-8.3°C | -8.3°C | 21 | 5.6 | 8.79 h |
| December | -6.7°C-15.0°C | -15.0°C | 14 | 4.6 | 7.68 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Sherwood Park in SeptemberCanada · 11 kmHigh 16.0°C · Low 6.7°C · 38 mm rain
- Red Deer in SeptemberCanada · 144 kmHigh 16.6°C · Low 6.3°C · 41 mm rain
- Airdrie in SeptemberCanada · 253 kmHigh 16.6°C · Low 5.8°C · 45 mm rain
- Calgary in SeptemberCanada · 281 kmHigh 17.5°C · Low 5.6°C · 44 mm rain
- Grande Prairie in SeptemberCanada · 389 kmHigh 16.1°C · Low 6.6°C · 40 mm rain
- Lethbridge in SeptemberCanada · 430 kmHigh 19.7°C · Low 8.3°C · 37 mm rain
- Saskatoon in SeptemberCanada · 483 kmHigh 18.1°C · Low 8.1°C · 38 mm rain
- Kamloops in SeptemberCanada · 567 kmHigh 21.4°C · Low 10.7°C · 35 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Edmonton) is explained once on the Edmonton year overview and on the Sources, method and limits page.