Weather in Regional District of Okanagan-Similkameen for September 2026
Until now, September 2026 in Regional District of Okanagan-Similkameen is cooler than usual, with temperatures averaging 24.2 °C, this is 3.8 °C below the typical seasonal average.
The forecast for the next days in Regional District of Okanagan-Similkameen predicts a temperature of 17.6 °C, which is cooler than the historical average.
In general, the average temperature in Regional District of Okanagan-Similkameen at the beginning of September is 28.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.9 °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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Regional District of Okanagan-Similkameen Weather September
Temperatures trend during September in Regional District of Okanagan-Similkameen
September weather in Regional District of Okanagan-Similkameen day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 31° /9° | 0 mm | 7 | |
| 2 Sept. |  Partly cloudy | 31° /11° | 2.8 mm | 6 | |
| 3 Sept. |  Sunny | 26° /8° | 52 mm | 6 | |
| 4 Sept. | Sunny | 27° /7° | 0 mm | 6 | |
| 5 Sept. | Sunny | 27° /7° | 0.3 mm | 6 | |
| 6 Sept. | Sunny | 29° /8° | 0 mm | 7 | |
| 7 Sept. | Sunny | 27° /9° | 3.2 mm | 5 | |
| 8 Sept. | Sunny | 29° /10° | 0 mm | 7 | |
| 9 Sept. | Sunny | 25° /11° | 1.1 mm | 5 | |
| 10 Sept. | Sunny | 25° /8° | 0.1 mm | 6 | |
| 11 Sept. | Overcast | 22° /10° | 0 mm | 4.2 | |
| 12 Sept. | Sunny | 17° /7° | 0 mm | 4.4 | |
| 13 Sept. | Sunny | 18° /7° | 0 mm | 4.8 | |
| 14 Sept. | Sunny | 16° /6° | 0.1 mm | 4.6 | |
| 15 Sept. | Overcast | 13° /8° | 1.1 mm | 3 | |
| 16 Sept. | Sunny | 20° /7° | 0 mm | 6 | |
| 17 Sept. | Sunny | 22° /10° | 0 mm | 6 | |
| 18 Sept. | Sunny | 25° /12° | 0 mm | 6 | |
| 19 Sept. | Partly cloudy | 26° /14° | 0 mm | 7 | |
| 20 Sept. | Sunny | 24° /11° | 0 mm | 6 | |
| 21 Sept. | Overcast | 11° /5° | 0.3 mm | 4 | |
| 22 Sept. | Sunny | 12° /2° | 0 mm | 3 | |
| 23 Sept. | Sunny | 9° /1° | 1.8 mm | 3 | |
| 24 Sept. | Sunny | 11° /1° | 0.6 mm | 4 | |
| 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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Regional District of Okanagan-Similkameen in September - FAQ
What are the expected maximum and minimum temperatures in Regional District of Okanagan-Similkameen during September?
How much rainfall should be expected in Regional District of Okanagan-Similkameen during September?
What are the typical wind conditions in Regional District of Okanagan-Similkameen during September?
September rainfall patterns in Regional District of Okanagan-Similkameen
UV exposure in Regional District of Okanagan-Similkameen during September
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