Calgary Weather in September
Canada · September climate averages and travel tips
Avg high20°C (67°F)
Avg low7°C (44°F)
Rainfall49 mm (1.9 in)
RatingExcellent 9.6/10
Expect mild days in Calgary in September: the average high is 20°C (67°F) and the average low is 7°C (44°F). September is autumn (fall) in Canada. The month is fairly dry, with about 49 mm (1.9 in) of rain spread over 9 days. You get roughly 12.4 hours of daylight and frequently cloudy skies.
Is September a good time to visit Calgary?
Yes — September is one of the best months to visit Calgary. The weather rates excellent (9.6/10) on our comfort score.
September weather at a glance
| Average high | 20°C (67°F) |
|---|---|
| Average low | 7°C (44°F) |
| Daily mean | 12°C (54°F) |
| Rainfall | 49 mm (1.9 in) |
| Rainy days (1 mm+) | 9 |
| Humidity | 66% |
| Cloud cover | 60% |
| Daylight | 12.4 hours |
| Est. sunshine | 5.5 hours/day |
| Wind | 3.6 km/h |
| vs August | 5°C cooler than August, with 13 mm less rain. |
What to pack for Calgary in September
- T-shirts plus a light layer for the evening
- a sweater for cool nights
Calgary weather in other months
Jan-1°C / -10°C16 mmPoorFeb0°C / -10°C23 mmPoorMar5°C / -6°C27 mmFairApr10°C / -2°C45 mmFairMay17°C / 4°C79 mmGoodJun20°C / 8°C118 mmGoodJul25°C / 12°C59 mmExcellentAug24°C / 11°C62 mmExcellentSep20°C / 7°C49 mmExcellentOct12°C / 1°C31 mmGoodNov3°C / -5°C26 mmPoorDec-2°C / -10°C24 mmPoor
← AugustBest time to visit CalgaryOctober →
Nearby in September
- Edmonton19°C · 41 mm
- Vancouver18°C · 74 mm
- Seattle, Washington21°C · 62 mm
- Victoria18°C · 53 mm
- Denver, Colorado29°C · 35 mm
Where else is good in September? See where to go in September.