Weather in Vancouver, Washington for September 2026
Until now, September 2026 in Vancouver has been significantly cooler than historical averages by 5.1 °F, with average temperature of 21.1 °F.
Expect cooler weather in the next days in Vancouver with the forecast suggesting a temperature of 25.1 °F, lower than the historical average.
In general, the average temperature in Vancouver at the beginning of September is 26.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21 °F by the end of September.
The climate of Vancouver in September is notably wet, with an average of 13 rainy days, and a total of 60.3 mm of precipitation.
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Vancouver Weather September
Temperatures trend during September in Vancouver
September weather in Vancouver day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 27° /14° | 0.1 mm | 5 | |
| Sept. 2 |  Cloudy | 25° /13° | 11.7 mm | 5 | |
| Sept. 3 |  Patchy rain possible | 24° /14° | 9.1 mm | 5 | |
| Sept. 4 | Overcast | 26° /12° | 4 mm | 5 | |
| Sept. 5 |  Sunny | 30° /14° | 0 mm | 7 | |
| Sept. 6 |  Partly cloudy | 26° /14° | 5.1 mm | 5 | |
| Sept. 7 | Patchy rain possible | 25° /14° | 1.5 mm | 5 | |
| Sept. 8 | Sunny | 27° /12° | 2.4 mm | 6 | |
| Sept. 9 |  Mist | 27° /13° | 3.3 mm | 6 | |
| Sept. 10 | Overcast | 25° /11° | 0 mm | 5.3 | |
| Sept. 11 | Overcast | 23° /9° | 0 mm | 4.4 | |
| Sept. 12 | Overcast | 21° /11° | 2.6 mm | 2.9 | |
| Sept. 13 | Fog | 20° /9° | 0 mm | 4.4 | |
| Sept. 14 | Overcast | 23° /8° | 0 mm | 6 | |
| Sept. 15 | Sunny | 28° /9° | 0 mm | 7 | |
| Sept. 16 | Sunny | 32° /11° | 0 mm | 8 | |
| Sept. 17 | Sunny | 33° /14° | 0 mm | 8 | |
| Sept. 18 | Sunny | 29° /15° | 0 mm | 7 | |
| Sept. 19 | Overcast | 19° /12° | 0 mm | 5 | |
| Sept. 20 | Sunny | 24° /10° | 0 mm | 6 | |
| Sept. 21 | Sunny | 23° /10° | 0 mm | 6 | |
| Sept. 22 | Sunny | 26° /8° | 0 mm | 7 | |
| Sept. 23 | Light rain shower | 26° /13° | 1.1 mm | 6 | |
| Sept. 24 | Sunny | 27° /14° | 1.9 mm | 7 | |
| Sept. 25 | Light rain shower | 20° /12° | 7.1 mm | 4 | |
| Sept. 26 | Light rain shower | 20° /10° | 3.7 mm | 5 | |
| Sept. 27 | Overcast | 22° /13° | 4.8 mm | 5 | |
| Sept. 28 | Overcast | 20° /11° | 0.5 mm | 5 | |
| Sept. 29 | Overcast | 18° /10° | 4.5 mm | 4 | |
| Sept. 30 | Sunny | 20° /9° | 9.7 mm | 5 | |
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Vancouver in September - FAQ
What are the expected maximum and minimum temperatures in Vancouver during September?
How much rainfall should be expected in Vancouver during September?
What are the typical wind conditions in Vancouver during September?
September rainfall patterns in Vancouver
UV exposure in Vancouver during September
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