Weather in Calgary for September 2025
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Until now, September 2025 in Calgary has been nearly identical to the historical average, with a temperature of 23.3 °C (showing only a slight deviation of -0.3 °C).
The forecast for the next days in Calgary predicts temperatures to be around 23 °C, close to the historical average.
In general, the average temperature in Calgary at the beginning of September is 24.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.9 °C by the end of September.
Calgary experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 27.1 mm.
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Calgary Weather September
Temperatures trend during September in Calgary
September weather in Calgary day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 24° /11° | 0.2 mm | 6 | |
| 2 Sept. |  Partly cloudy | 25° /11° | 0 mm | 6 | |
| 3 Sept. |  Overcast | 27° /10° | 0 mm | 6 | |
| 4 Sept. |  Cloudy | 21° /10° | 1.1 mm | 5 | |
| 5 Sept. | Sunny | 24° /8° | 0.2 mm | 6 | |
| 6 Sept. | Sunny | 24° /9° | 0.5 mm | 6 | |
| 7 Sept. | Sunny | 26° /10° | 0 mm | 6 | |
| 8 Sept. |  Patchy rain possible | 22° /10° | 1.4 mm | 5 | |
| 9 Sept. | Partly cloudy | 24° /8° | 0.6 mm | 6 | |
| 10 Sept. | Sunny | 22° /8° | 1.5 mm | 5 | |
| 11 Sept. |  Moderate rain at times | 23° /9° | 2 mm | 6 | |
| 12 Sept. | Moderate or heavy rain shower | 20° /9° | 3.1 mm | 5 | |
| 13 Sept. | Patchy rain possible | 21° /9° | 1.7 mm | 5 | |
| 14 Sept. | Sunny | 29° /11° | 0 mm | 1 | |
| 15 Sept. | Partly cloudy | 21° /13° | 0 mm | 0.5 | |
| 16 Sept. | Sunny | 25° /10° | 0 mm | 0.9 | |
| 17 Sept. | Sunny | 26° /11° | 0 mm | 1.1 | |
| 18 Sept. | Sunny | 22° /12° | 0 mm | 0 | |
| 19 Sept. | Sunny | 22° /10° | 0 mm | 5 | |
| 20 Sept. | Sunny | 27° /11° | 0 mm | 5 | |
| 21 Sept. | Sunny | 27° /15° | 0 mm | 5 | |
| 22 Sept. | Patchy rain possible | 19° /8° | 0.3 mm | 3 | |
| 23 Sept. | Sunny | 21° /6° | 0 mm | 4 | |
| 24 Sept. | Sunny | 26° /9° | 0 mm | 5 | |
| 25 Sept. | Sunny | 29° /15° | 0 mm | 6 | |
| 26 Sept. | Patchy rain possible | 9° /5° | 1.7 mm | 2 | |
| 27 Sept. | Cloudy | 14° /5° | 0.1 mm | 2 | |
| 28 Sept. | Cloudy | 19° /6° | 1.3 mm | 5 | |
| 29 Sept. |  Thundery outbreaks possible | 15° /5° | 1.9 mm | 4 | |
| 30 Sept. | Partly cloudy | 13° /5° | 3.2 mm | 4 | |
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Calgary in September - FAQ
September rainfall patterns in Calgary
UV exposure in Calgary during September
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Where is Calgary?Get accurate weather forecasts for Calgary, located at latitude 51.05 and longitude -114.085. Stay updated with localized weather information tailored for Calgary.