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Calgary weather in September 2025
Expect daytime maximum temperatures of 17°C in Calgary, Alberta in September based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 44 mm of rainfall in the month.
- 17°C max day temperature
17 - 7 hours of sunshine per day
- 8 days with some rainfall
8 - 4°C min night temperature
4 - 13 hours of daylight per day
13 - No heat & humidity
0 - 44 mm of monthly rainfall
44 - 4 (Moderate) UV index
4
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Recommended for Alberta
The September weather guide for Alberta (Calgary) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Canada
How warm is it in Calgary in September?
Daytime temperatures usually reach 17°C in Calgary in September, falling to 4°C at night.
How sunny is it in Calgary in September?
There are normally 7 hours of bright sunshine each day in Calgary in September - that's 52% of daylight hours.
Does it rain in Calgary in September?
There are usually 8 days with some rain in Calgary in September and the average monthly rainfall is 44mm.
Calgary September sunrise & sunset times
Browse the sunrise and sunset times for Calgary in September 2025. Select a month to view Calgary sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st September 2025 | 05:50 | 19:21 |
| Monday, 15th September 2025 | 06:12 | 18:49 |
| Tuesday, 30th September 2025 | 06:36 | 18:15 |
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