Yakima County (Yakima)
September
Weather in Yakima County, Washington for September 2027
Your guide to Yakima County weather in September - trends and predictions
In general, the average temperature in Yakima County at the beginning of September is 22.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.6 °F by the end of September.
Yakima County experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 39.7 mm.
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Temperatures
Rain 🌧️
More
20
Dry days
10
Rainy days
0
Snow days
23°/10°
Temperatures
14 km/h
Avg max wind
44 %
Avg humidity
Yakima County Weather September
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Temperatures trend during September in Yakima County
See the weather trend as well as the moving average line
September weather in Yakima County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 31° /14° | 0 mm | 2 | |
| Sept. 2 |  Patchy rain possible | 23° /13° | 0.5 mm | 1 | |
| Sept. 3 | Overcast | 21° /11° | 0.5 mm | 2 | |
| Sept. 4 |  Moderate or heavy rain shower | 21° /9° | 3.4 mm | 5 | |
| Sept. 5 | Moderate or heavy rain shower | 21° /11° | 3.4 mm | 2 | |
| Sept. 6 |  Heavy rain at times | 18° /9° | 2.1 mm | 2 | |
| Sept. 7 | Patchy rain possible | 24° /9° | 0.5 mm | 5 | |
| Sept. 8 |  Sunny | 26° /9° | 0 mm | 6 | |
| Sept. 9 | Overcast | 29° /11° | 0 mm | 6 | |
| Sept. 10 | Overcast | 29° /14° | 0 mm | 2 | |
| Sept. 11 | Overcast | 25° /10° | 0 mm | 2 | |
| Sept. 12 | Overcast | 24° /11° | 7.9 mm | 1 | |
| Sept. 13 | Moderate or heavy rain shower | 12° /10° | 18.8 mm | 1 | |
| Sept. 14 | Overcast | 20° /8° | 0 mm | 5 | |
| Sept. 15 | Patchy rain possible | 18° /10° | 0.8 mm | 1 | |
| Sept. 16 | Sunny | 23° /9° | 0 mm | 5 | |
| Sept. 17 | Overcast | 26° /11° | 0 mm | 5 | |
| Sept. 18 | Sunny | 26° /11° | 0 mm | 5 | |
| Sept. 19 | Overcast | 27° /11° | 0 mm | 5 | |
| Sept. 20 | Sunny | 28° /12° | 0 mm | 4 | |
| Sept. 21 | Overcast | 29° /13° | 0 mm | 4 | |
| Sept. 22 | Overcast | 26° /13° | 0 mm | 3 | |
| Sept. 23 | Overcast | 22° /10° | 0 mm | 1 | |
| Sept. 24 | Overcast | 21° /10° | 0 mm | 1 | |
| Sept. 25 | Patchy rain possible | 16° /11° | 1.8 mm | 3 | |
| Sept. 26 | Overcast | 18° /6° | 0 mm | 2 | |
| Sept. 27 | Overcast | 19° /7° | 0 mm | 3 | |
| Sept. 28 | Overcast | 21° /6° | 0 mm | 4 | |
| Sept. 29 | Overcast | 22° /12° | 0 mm | 1 | |
| Sept. 30 | Overcast | 20° /9° | 0 mm | 2 | |
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Important Notice
Our weather forecast for Yakima County 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 Yakima County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Yakima County in September - FAQ
What are the expected maximum and minimum temperatures in Yakima County during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Yakima County during September?
In September, Yakima County can expect light to moderate rainfall, totaling 39.7 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Yakima County during September?
The average wind speed in Yakima County during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Yakima County
Explore the daily rainfall trends and prepare for Yakima Countys September weather 💧
Typically, Yakima County has 10 rainy days in September with a total of 39.7 mm of rainfall.
UV exposure in Yakima County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Yakima County?Get accurate weather forecasts for Yakima County, located at latitude 46.602 and longitude -120.506. Stay updated with localized weather information tailored for Yakima County.
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