Yakima weather in September 2025

Expect 24°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Yakima in September. Check more long-term weather averages for Yakima in September before you book your next holiday to Washington State in 2025/2026.

  • 24°C maximum daytime temperature in September in Yakima24
    24°C max day temperature
  • 8 hours of sunshine per day
  • 4 days with some rainfall in September in Yakima4
    4 days with some rainfall
  • 7°C minimum night-time temperature in September in Yakima7
    7°C min night temperature
  • 12 hours of daylight per day in September in Yakima12
    12 hours of daylight per day
  • No heat & humidity in September in Yakima0
    No heat & humidity
  • 10 mm monthly rainfall in September in Yakima10
    10 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Yakima5
    5 (Moderate) UV index

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The September weather guide for Washington State (Yakima) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Yakima in September?

Daytime temperatures usually reach 24°C in Yakima in September, falling to 7°C at night.

How sunny is it in Yakima in September?

There are normally 8 hours of bright sunshine each day in Yakima in September - that's 64% of daylight hours.

Does it rain in Yakima in September?

There are usually 4 days with some rain in Yakima in September and the average monthly rainfall is 10mm.

Yakima September sunrise & sunset times

Browse the sunrise and sunset times for Yakima in September 2025. Select a month to view Yakima sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:23 18:40
Monday, 15th September 2025 05:40 18:13
Tuesday, 30th September 2025 06:00 17:43

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