Regional District of Okanagan-Similkameen (Penticton)
September
Weather in Regional District of Okanagan-Similkameen for September 2026
Your guide to Regional District of Okanagan-Similkameen weather in September - trends and predictions
In general, the average temperature in Regional District of Okanagan-Similkameen at the beginning of September is 29.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.6 °C by the end of September.
The climate of Regional District of Okanagan-Similkameen in September is notably wet, with an average of 11 rainy days, and a total of 25.4 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
11
Rainy days
0
Snow days
23°/6°
Temperatures
11 km/h
Avg max wind
53 %
Avg humidity
Regional District of Okanagan-Similkameen Weather September
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Temperatures trend during September in Regional District of Okanagan-Similkameen
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September weather in Regional District of Okanagan-Similkameen day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 32° /8° | 0 mm | 8 | |
| 2 Sept. |  Partly cloudy | 32° /11° | 1 mm | 8 | |
| 3 Sept. |  Sunny | 29° /9° | 0 mm | 7 | |
| 4 Sept. | Sunny | 29° /7° | 0 mm | 7 | |
| 5 Sept. | Sunny | 29° /7° | 0 mm | 7 | |
| 6 Sept. | Sunny | 30° /7° | 0 mm | 7 | |
| 7 Sept. | Sunny | 28° /8° | 2.3 mm | 6 | |
| 8 Sept. | Partly cloudy | 29° /10° | 0 mm | 7 | |
| 9 Sept. | Sunny | 25° /11° | 1.4 mm | 6 | |
| 10 Sept. | Sunny | 26° /7° | 0 mm | 6 | |
| 11 Sept. | Overcast | 24° /6° | 1.6 mm | 5 | |
| 12 Sept. | Overcast | 25° /8° | 0 mm | 6 | |
| 13 Sept. | Overcast | 26° /3° | 0 mm | 6 | |
| 14 Sept. | Sunny | 23° /5° | 0.1 mm | 6 | |
| 15 Sept. | Sunny | 25° /6° | 0.2 mm | 6 | |
| 16 Sept. | Sunny | 26° /5° | 0 mm | 6 | |
| 17 Sept. | Sunny | 25° /9° | 0 mm | 6 | |
| 18 Sept. |  Patchy rain possible | 23° /8° | 0.1 mm | 5 | |
| 19 Sept. | Overcast | 20° /5° | 0 mm | 5 | |
| 20 Sept. |  Light freezing rain | 19° /1° | 0.8 mm | 5 | |
| 21 Sept. | Sunny | 20° /5° | 3 mm | 5 | |
| 22 Sept. | Sunny | 21° /3° | 0 mm | 5 | |
| 23 Sept. | Patchy rain possible | 22° /5° | 0 mm | 5 | |
| 24 Sept. | Sunny | 23° /8° | 0 mm | 6 | |
| 25 Sept. |  Light rain | 19° /5° | 2.1 mm | 4 | |
| 26 Sept. | Light freezing rain | 16° /4° | 1 mm | 4 | |
| 27 Sept. | Light freezing rain | 18° /6° | 1.4 mm | 4 | |
| 28 Sept. | Overcast | 18° /1° | 3.9 mm | 4 | |
| 29 Sept. | Patchy rain possible | 14° /3° | 2.6 mm | 4 | |
| 30 Sept. | Patchy rain possible | 15° /0° | 3.6 mm | 4 | |
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Important Notice
Our weather forecast for Regional District of Okanagan-Similkameen 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 Regional District of Okanagan-Similkameen forecast closer to your planned date for the most up-to-date weather information.
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Regional District of Okanagan-Similkameen in September - FAQ
What are the expected maximum and minimum temperatures in Regional District of Okanagan-Similkameen during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Regional District of Okanagan-Similkameen during September?
In September, Regional District of Okanagan-Similkameen can expect light to moderate rainfall, totaling 25.4 mm across approximately 11 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Regional District of Okanagan-Similkameen during September?
The average wind speed in Regional District of Okanagan-Similkameen during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Regional District of Okanagan-Similkameen
Explore the daily rainfall trends and prepare for Regional District of Okanagan-Similkameens September weather 💧
Typically, Regional District of Okanagan-Similkameen has 11 rainy days in September with a total of 25.4 mm of rainfall.
UV exposure in Regional District of Okanagan-Similkameen during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Regional District of Okanagan-Similkameen?Get accurate weather forecasts for Regional District of Okanagan-Similkameen, located at latitude 49.481 and longitude -119.586. Stay updated with localized weather information tailored for Regional District of Okanagan-Similkameen.
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