Calgary
September
Weather in Calgary for September 2026
Your guide to Calgary weather in September - trends and predictions
Until now, September 2026 in Calgary is cooler than usual, with temperatures averaging 19.1 °C, this is 4 °C below the typical seasonal average.
The forecast for the next days in Calgary predicts a temperature of 16.6 °C, which is cooler than the historical average.
In general, the average temperature in Calgary at the beginning of September is 23.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.3 °C by the end of September.
With an average of 4 rainy days, Calgary experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
26
Dry days
4
Rainy days
0
Snow days
21°/8°
Temperatures
18 km/h
Avg max wind
56 %
Avg humidity
Calgary Weather September
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Temperatures trend during September in Calgary
See the weather trend as well as the moving average line
September weather in Calgary day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 24° /10° | 0.2 mm | 5 | |
| 2 Sept. |  Partly cloudy | 25° /11° | 0.9 mm | 5 | |
| 3 Sept. |  Overcast | 26° /10° | 0.2 mm | 6 | |
| 4 Sept. |  Patchy rain possible | 20° /10° | 1.5 mm | 5 | |
| 5 Sept. | Overcast | 22° /8° | 2.4 mm | 5 | |
| 6 Sept. | Sunny | 23° /8° | 0.6 mm | 5 | |
| 7 Sept. | Sunny | 24° /10° | 1.5 mm | 5 | |
| 8 Sept. | Patchy rain possible | 22° /9° | 1.4 mm | 5 | |
| 9 Sept. | Partly cloudy | 24° /9° | 0.5 mm | 6 | |
| 10 Sept. | Sunny | 21° /8° | 2.9 mm | 5 | |
| 11 Sept. |  Moderate rain at times | 21° /8° | 2 mm | 5 | |
| 12 Sept. | Overcast | 11° /5° | 0 mm | 2.2 | |
| 13 Sept. | Overcast | 13° /4° | 0.1 mm | 2.7 | |
| 14 Sept. | Patchy rain possible | 12° /7° | 7.6 mm | 2.4 | |
| 15 Sept. | Overcast | 11° /4° | 0.1 mm | 3 | |
| 16 Sept. | Sunny | 14° /3° | 1.1 mm | 4 | |
| 17 Sept. | Sunny | 21° /6° | 0 mm | 6 | |
| 18 Sept. | Sunny | 23° /8° | 0 mm | 6 | |
| 19 Sept. | Sunny | 23° /10° | 0 mm | 6 | |
| 20 Sept. | Sunny | 24° /12° | 0 mm | 6 | |
| 21 Sept. | Overcast | 26° /11° | 0 mm | 7 | |
| 22 Sept. | Overcast | 17° /9° | 0 mm | 5 | |
| 23 Sept. | Overcast | 17° /10° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 12° /5° | 2.1 mm | 2 | |
| 25 Sept. | Patchy rain possible | 9° /5° | 0.7 mm | 3 | |
| 26 Sept. | Partly cloudy | 21° /8° | 0 mm | 6 | |
| 27 Sept. | Sunny | 22° /7° | 0 mm | 5 | |
| 28 Sept. | Overcast | 19° /6° | 1 mm | 4 | |
| 29 Sept. | Overcast | 17° /6° | 1.5 mm | 4 | |
| 30 Sept. | Partly cloudy | 14° /6° | 2.5 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Calgary in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Calgary forecast closer to your planned date for the most up-to-date weather information.
Change Month
Calgary in September - FAQ
What are the expected maximum and minimum temperatures in Calgary during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Calgary during September?
In September, Calgary can expect light to moderate rainfall, totaling 24.3 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Calgary during September?
The average wind speed in Calgary during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Calgary
Explore the daily rainfall trends and prepare for Calgarys September weather 💧
Typically, Calgary has 4 rainy days in September with a total of 24.3 mm of rainfall.
UV exposure in Calgary during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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