The temperatures in Yakima in September are comfortable with low of 12°C and and high up to 25°C.
The wather in Yakima in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Yakima in September 2025.
If you’re planning to visit Yakima in the near future, we highly recommend that you review the 14 day weather forecast for Yakima before you arrive.
Temperatures
25° / 12°
Rainy Days
1
Snowy Days
0
Dry Days
29
Rainfall
10
mm
Sun Hours
11.8
Hrs