Penticton
September
Weather in Penticton for September 2025
Your guide to Penticton weather in September - trends and predictions
In general, the average temperature in Penticton at the beginning of September is 28.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.1 °C by the end of September.
With an average of 5 rainy days, Penticton experiences minimal rainfall in September, ensuring that most days remain pleasantly dry.
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25
Dry days
5
Rainy days
0
Snow days
22°/1°
Temperatures
11 km/h
Avg max wind
58 %
Avg humidity
Penticton in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2  30° | 3 25° | 4  27° | 5 28° | 6  29° | 7 29° |
| 8 30° | 9 27° | 10 26° | 11 21° | 12 24° | 13 24° | 14 23° |
| 15 25° | 16 26° | 17 23° | 18  21° | 19 17° | 20  14° | 21 20° |
| 22 21° | 23 20° | 24 21° | 25  19° | 26 14° | 27 16° | 28  15° |
| 29 13° | 30 15° |
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Temperatures trend during September in Penticton
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. | Overcast | 29° /5° | 0 mm | 7 | |
| 2 Sept. | Partly cloudy | 30° /9° | 1.5 mm | 7 | |
| 3 Sept. | Overcast | 25° /6° | 0 mm | 6 | |
| 4 Sept. | Cloudy | 27° /3° | 0 mm | 7 | |
| 5 Sept. | Cloudy | 28° /4° | 0 mm | 7 | |
| 6 Sept. | Sunny | 29° /4° | 0 mm | 7 | |
| 7 Sept. | Sunny | 29° /4° | 0 mm | 7 | |
| 8 Sept. | Sunny | 30° /7° | 0 mm | 8 | |
| 9 Sept. | Sunny | 27° /10° | 0 mm | 7 | |
| 10 Sept. | Sunny | 26° /6° | 0 mm | 7 | |
| 11 Sept. | Overcast | 21° /4° | 2.5 mm | 5 | |
| 12 Sept. | Overcast | 24° /6° | 0 mm | 6 | |
| 13 Sept. | Overcast | 24° /0° | 0.1 mm | 6 | |
| 14 Sept. | Sunny | 23° /2° | 0.2 mm | 6 | |
| 15 Sept. | Sunny | 25° /4° | 0.3 mm | 6 | |
| 16 Sept. | Cloudy | 26° /4° | 0 mm | 6 | |
| 17 Sept. | Cloudy | 23° /8° | 0 mm | 6 | |
| 18 Sept. | Patchy rain possible | 21° /6° | 0.1 mm | 5 | |
| 19 Sept. | Overcast | 17° /4° | 0 mm | 5 | |
| 20 Sept. | Light freezing rain | 14° /-3° | 1.1 mm | 4 | |
| 21 Sept. | Sunny | 20° /1° | 0 mm | 5 | |
| 22 Sept. | Sunny | 21° /2° | 0 mm | 5 | |
| 23 Sept. | Patchy rain possible | 20° /5° | 0 mm | 5 | |
| 24 Sept. | Patchy rain possible | 21° /8° | 0 mm | 6 | |
| 25 Sept. | Light rain | 19° /3° | 3.2 mm | 5 | |
| 26 Sept. | Light freezing rain | 14° /3° | 1.4 mm | 4 | |
| 27 Sept. | Light freezing rain | 16° /3° | 2.2 mm | 4 | |
| 28 Sept. | Moderate or heavy rain with thunder | 15° /-1° | 5.8 mm | 4 | |
| 29 Sept. | Patchy rain possible | 13° /0° | 0.1 mm | 4 | |
| 30 Sept. | Patchy rain possible | 15° /-5° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Penticton 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 Penticton forecast closer to your planned date for the most up-to-date weather information.
Penticton in September - FAQ
What are the expected maximum and minimum temperatures in Penticton during September?
During September, expect a variety of temperatures with highs around 22° and lows near 1°, suitable for diverse activities and preferences.
How much rainfall should be expected in Penticton during September?
In September, Penticton can expect light to moderate rainfall, totaling 23.6 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Penticton during September?
The average wind speed in Penticton during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Penticton
Explore the daily rainfall trends and prepare for Pentictons September weather 💧
UV exposure in Penticton during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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