Wenatchee (WA)
September
Weather in Wenatchee, Washington for September 2026
Your guide to Wenatchee weather in September - trends and predictions
In general, the average temperature in Wenatchee at the beginning of September is 34 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.9 °F by the end of September.
Precipitation in Wenatchee during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
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30
Dry days
0
Rainy days
0
Snow days
26°/10°
Temperatures
13 km/h
Avg max wind
49 %
Avg humidity
Wenatchee Weather September
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Temperatures trend during September in Wenatchee
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September weather in Wenatchee day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 35° /15° | 0 mm | 9 | |
| Sept. 2 | Partly cloudy | 36° /14° | 0 mm | 9 | |
| Sept. 3 |  Sunny | 35° /15° | 0 mm | 9 | |
| Sept. 4 | Sunny | 34° /15° | 0 mm | 9 | |
| Sept. 5 | Sunny | 33° /15° | 0 mm | 8 | |
| Sept. 6 | Sunny | 34° /16° | 0 mm | 8 | |
| Sept. 7 |  Cloudy | 31° /15° | 0 mm | 7 | |
| Sept. 8 | Partly cloudy | 30° /12° | 0 mm | 8 | |
| Sept. 9 | Partly cloudy | 27° /10° | 0 mm | 6 | |
| Sept. 10 | Partly cloudy | 29° /9° | 0 mm | 7 | |
| Sept. 11 |  Patchy rain possible | 25° /9° | 0.1 mm | 7 | |
| Sept. 12 | Partly cloudy | 25° /7° | 0 mm | 6 | |
| Sept. 13 | Sunny | 27° /8° | 0.1 mm | 7 | |
| Sept. 14 | Partly cloudy | 23° /7° | 0 mm | 6 | |
| Sept. 15 | Sunny | 23° /4° | 0 mm | 6 | |
| Sept. 16 | Sunny | 26° /7° | 0 mm | 7 | |
| Sept. 17 | Partly cloudy | 28° /9° | 0 mm | 7 | |
| Sept. 18 | Partly cloudy | 27° /8° | 0 mm | 7 | |
| Sept. 19 | Sunny | 28° /9° | 0 mm | 8 | |
| Sept. 20 | Sunny | 26° /9° | 0 mm | 7 | |
| Sept. 21 |  Overcast | 23° /6° | 0 mm | 5 | |
| Sept. 22 | Overcast | 24° /4° | 0 mm | 6 | |
| Sept. 23 | Partly cloudy | 27° /10° | 0 mm | 7 | |
| Sept. 24 | Sunny | 30° /11° | 0 mm | 8 | |
| Sept. 25 | Patchy rain possible | 25° /12° | 0.4 mm | 6 | |
| Sept. 26 | Cloudy | 22° /6° | 0.1 mm | 6 | |
| Sept. 27 | Partly cloudy | 24° /9° | 0 mm | 7 | |
| Sept. 28 | Overcast | 24° /7° | 0 mm | 6 | |
| Sept. 29 | Partly cloudy | 18° /3° | 0 mm | 5 | |
| Sept. 30 | Sunny | 17° /4° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Wenatchee 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 Wenatchee forecast closer to your planned date for the most up-to-date weather information.
Change Month
Wenatchee in September - FAQ
What are the expected maximum and minimum temperatures in Wenatchee during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Wenatchee during September?
Rainfall in Wenatchee during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 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 Wenatchee during September?
The average wind speed in Wenatchee during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
UV exposure in Wenatchee during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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