Grande Prairie
September
Weather in Grande Prairie for September 2026
Your guide to Grande Prairie weather in September - trends and predictions
Until now, September 2026 in Grande Prairie is cooler than usual, with temperatures averaging 18.3 °C, this is 4.4 °C below the typical seasonal average.
The forecast for the next days in Grande Prairie predicts a temperature of 14.5 °C, which is cooler than the historical average.
In general, the average temperature in Grande Prairie at the beginning of September is 22.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14 °C by the end of September.
With an average of 2 rainy days, Grande Prairie experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
28
Dry days
2
Rainy days
0
Snow days
20°/8°
Temperatures
19 km/h
Avg max wind
57 %
Avg humidity
Grande Prairie Weather September
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Temperatures trend during September in Grande Prairie
See the weather trend as well as the moving average line
September weather in Grande Prairie day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 27° /11° | 0 mm | 5 | |
| 2 Sept. | Sunny | 25° /12° | 0.1 mm | 5 | |
| 3 Sept. |  Cloudy | 22° /8° | 6.6 mm | 4 | |
| 4 Sept. |  Mist | 17° /6° | 5 mm | 4 | |
| 5 Sept. | Sunny | 21° /5° | 0.7 mm | 6 | |
| 6 Sept. |  Patchy rain possible | 23° /7° | 0 mm | 5 | |
| 7 Sept. | Sunny | 24° /11° | 0 mm | 6 | |
| 8 Sept. |  Partly cloudy | 24° /10° | 0 mm | 6 | |
| 9 Sept. | Sunny | 22° /9° | 0 mm | 5 | |
| 10 Sept. | Sunny | 21° /7° | 0.9 mm | 5 | |
| 11 Sept. |  Overcast | 7° /5° | 2.6 mm | 1.9 | |
| 12 Sept. | Sunny | 13° /3° | 0 mm | 3.9 | |
| 13 Sept. | Sunny | 17° /5° | 0 mm | 4.1 | |
| 14 Sept. | Patchy rain possible | 13° /4° | 4.4 mm | 2 | |
| 15 Sept. | Overcast | 13° /2° | 0 mm | 4 | |
| 16 Sept. | Sunny | 22° /8° | 0 mm | 6 | |
| 17 Sept. | Sunny | 19° /13° | 0 mm | 5 | |
| 18 Sept. | Sunny | 23° /11° | 0 mm | 6 | |
| 19 Sept. | Sunny | 22° /14° | 0 mm | 6 | |
| 20 Sept. | Sunny | 17° /10° | 0.3 mm | 5 | |
| 21 Sept. | Overcast | 11° /5° | 1.9 mm | 3 | |
| 22 Sept. | Patchy rain possible | 9° /0° | 2.1 mm | 2 | |
| 23 Sept. | Overcast | 7° /-1° | 0.2 mm | 2 | |
| 24 Sept. | Sunny | 10° /1° | 0 mm | 3 | |
| 25 Sept. | Overcast | 18° /7° | 0 mm | 4 | |
| 26 Sept. | Overcast | 15° /5° | 0 mm | 4 | |
| 27 Sept. |  Patchy light drizzle | 16° /6° | 0.2 mm | 4 | |
| 28 Sept. | Patchy rain possible | 13° /3° | 0.1 mm | 3 | |
| 29 Sept. | Overcast | 12° /5° | 0.4 mm | 3 | |
| 30 Sept. | Sunny | 14° /4° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Grande Prairie 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 Grande Prairie forecast closer to your planned date for the most up-to-date weather information.
Change Month
Grande Prairie in September - FAQ
What are the expected maximum and minimum temperatures in Grande Prairie during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Grande Prairie during September?
Rainfall in Grande Prairie during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 2 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Grande Prairie during September?
The average wind speed in Grande Prairie during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Grande Prairie
Explore the daily rainfall trends and prepare for Grande Prairies September weather 💧
Typically, Grande Prairie has 2 rainy days in September with a total of 7.5 mm of rainfall.
UV exposure in Grande Prairie during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Grande Prairie?Get accurate weather forecasts for Grande Prairie, located at latitude 55.167 and longitude -118.803. Stay updated with localized weather information tailored for Grande Prairie.
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