Grande Prairie
September
Weather in Grande Prairie for September 2025
Your guide to Grande Prairie weather in September - trends and predictions
In general, the average temperature in Grande Prairie at the beginning of September is 22.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.4 °C by the end of September.
Grande Prairie sees moderate rainfall in September, averaging 8 rainy days.
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22
Dry days
8
Rainy days
0
Snow days
20°/6°
Temperatures
18 km/h
Avg max wind
59 %
Avg humidity
Grande Prairie in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 25° | 3  20° | 4  18° | 5  22° | 6  23° | 7  24° |
| 8 24° | 9 21° | 10 23° | 11  21° | 12 22° | 13 20° | 14 20° |
| 15 23° | 16 21° | 17 22° | 18 18° | 19 13° | 20 15° | 21 19° |
| 22 21° | 23 21° | 24 20° | 25 19° | 26  17° | 27 17° | 28 13° |
| 29 10° | 30 12° |
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Temperatures trend during September in Grande Prairie
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Sunny | 28° /10° | 0 mm | 7 | |
| 2 Sept. | Sunny | 25° /11° | 0 mm | 7 | |
| 3 Sept. | Cloudy | 20° /7° | 0.6 mm | 5 | |
| 4 Sept. | Mist | 18° /5° | 0.1 mm | 5 | |
| 5 Sept. | Light rain | 22° /6° | 1.4 mm | 6 | |
| 6 Sept. | Patchy rain possible | 23° /9° | 0.1 mm | 5 | |
| 7 Sept. | Partly cloudy | 24° /9° | 0 mm | 6 | |
| 8 Sept. | Partly cloudy | 24° /9° | 0 mm | 7 | |
| 9 Sept. | Sunny | 21° /7° | 0 mm | 5 | |
| 10 Sept. | Sunny | 23° /6° | 0 mm | 6 | |
| 11 Sept. | Overcast | 21° /7° | 0.1 mm | 5 | |
| 12 Sept. | Overcast | 22° /8° | 0 mm | 6 | |
| 13 Sept. | Partly cloudy | 20° /7° | 0 mm | 6 | |
| 14 Sept. | Overcast | 20° /5° | 0.2 mm | 5 | |
| 15 Sept. | Cloudy | 23° /7° | 0 mm | 5 | |
| 16 Sept. | Overcast | 21° /9° | 0.2 mm | 5 | |
| 17 Sept. | Partly cloudy | 22° /9° | 0 mm | 6 | |
| 18 Sept. | Partly cloudy | 18° /8° | 0.2 mm | 5 | |
| 19 Sept. | Overcast | 13° /5° | 0 mm | 3 | |
| 20 Sept. | Light rain | 15° /5° | 0.8 mm | 4 | |
| 21 Sept. | Sunny | 19° /3° | 0 mm | 5 | |
| 22 Sept. | Sunny | 21° /7° | 6.4 mm | 5 | |
| 23 Sept. | Overcast | 21° /8° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 20° /8° | 0.3 mm | 5 | |
| 25 Sept. | Overcast | 19° /7° | 0 mm | 4 | |
| 26 Sept. | Thundery outbreaks possible | 17° /6° | 0 mm | 4 | |
| 27 Sept. | Patchy light drizzle | 17° /6° | 0.3 mm | 4 | |
| 28 Sept. | Patchy rain possible | 13° /3° | 0.2 mm | 4 | |
| 29 Sept. | Patchy rain possible | 10° /5° | 0.5 mm | 3 | |
| 30 Sept. | Patchy rain possible | 12° /3° | 0 mm | 4 | |
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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.
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 6°. 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 8 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 18 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 💧
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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