Alberta (Calgary)
September
Weather in Alberta for September 2026
Your guide to Alberta weather in September - trends and predictions
Until now, September 2026 in Alberta is cooler than usual, with temperatures averaging 18.5 °C, this is 2.6 °C below the typical seasonal average.
The forecast for the upcoming days in Alberta predicts a temperature of 16.5 °C, which is slightly above the historical average.
In general, the average temperature in Alberta at the beginning of September is 23.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18 °C by the end of September.
With an average of 4 rainy days, Alberta experiences minimal rainfall in September.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
26
Dry days
4
Rainy days
0
Snow days
21°/8°
Temperatures
18 km/h
Avg max wind
56 %
Avg humidity
Alberta Weather September
Move between months or click on a day
What’s the Weather Like in Alberta This September?
Discover the average temperatures and weather trends across Alberta’s cities this September.
Temperatures trend during September in Alberta
See the weather trend as well as the moving average line
September weather in Alberta day by day
Click on a date for more information
| 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. | Moderate or heavy rain shower | 19° /8° | 2.6 mm | 4 | |
| 13 Sept. | Patchy rain possible | 20° /8° | 1.6 mm | 5 | |
| 14 Sept. | Overcast | 20° /8° | 1.7 mm | 5 | |
| 15 Sept. | Patchy rain possible | 17° /7° | 1.9 mm | 4 | |
| 16 Sept. | Overcast | 20° /6° | 0 mm | 5 | |
| 17 Sept. | Partly cloudy | 21° /7° | 0 mm | 5 | |
| 18 Sept. | Sunny | 20° /8° | 0 mm | 5 | |
| 19 Sept. | Partly cloudy | 17° /6° | 1.1 mm | 4 | |
| 20 Sept. | Sunny | 17° /5° | 3.2 mm | 4 | |
| 21 Sept. | Sunny | 20° /4° | 0 mm | 5 | |
| 22 Sept. | Overcast | 20° /6° | 0 mm | 4 | |
| 23 Sept. |  Cloudy | 20° /7° | 0 mm | 5 | |
| 24 Sept. | Sunny | 21° /7° | 0 mm | 5 | |
| 25 Sept. | Overcast | 23° /8° | 0 mm | 5 | |
| 26 Sept. | Partly cloudy | 19° /7° | 0.1 mm | 5 | |
| 27 Sept. | Sunny | 15° /2° | 0 mm | 2.9 | |
| 28 Sept. | Sunny | 17° /4° | 0 mm | 3 | |
| 29 Sept. | Overcast | 20° /8° | 0 mm | 3.3 | |
| 30 Sept. | Sunny | 11° /5° | 0.1 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Alberta 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 Alberta forecast closer to your planned date for the most up-to-date weather information.
Change Month
Alberta in September - FAQ
What are the expected maximum and minimum temperatures in Alberta 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 Alberta during September?
In September, Alberta 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 Alberta during September?
The average wind speed in Alberta during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Alberta
Explore the daily rainfall trends and prepare for Albertas September weather 💧
Typically, Alberta has 4 rainy days in September with a total of 24.3 mm of rainfall.
UV exposure in Alberta during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Alberta
Select a province for an accurate weather forecast
Top locations in Alberta
Select a location for an accurate weather forecast
More Locations Quick links
More Alberta weather pages
You are here
Where is Alberta?Get accurate weather forecasts for Alberta, located at latitude 51.05 and longitude -114.085. Stay updated with localized weather information tailored for Alberta.
Found a mistake?
We appreciate your attention to details. Tell us here.