Spokane weather in August 2025

Expect 29°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Spokane in August. Check more long-term weather averages for Spokane in August before you book your next holiday to Washington State in 2025/2026.

  • 29°C maximum daytime temperature in August in Spokane29
    29°C max day temperature
  • 11 hours of sunshine per day
  • 5 days with some rainfall in August in Spokane5
    5 days with some rainfall
  • 12°C minimum night-time temperature in August in Spokane12
    12°C min night temperature
  • 14 hours of daylight per day in August in Spokane14
    14 hours of daylight per day
  • Low heat & humidity in August in SpokaneL
    Low heat & humidity
  • 21 mm monthly rainfall in August in Spokane21
    21 mm of monthly rainfall
  • UV (maximum) index 7 (High) in August in Spokane7
    7 (High) UV index

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The August weather guide for Washington State (Spokane) 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 Spokane in August?

Daytime temperatures usually reach 29°C in Spokane in August with low heat and humidity, falling to 12°C at night.

How sunny is it in Spokane in August?

There are normally 11 hours of bright sunshine each day in Spokane in August - that's 75% of daylight hours.

Does it rain in Spokane in August?

There are usually 5 days with some rain in Spokane in August and the average monthly rainfall is 21mm.

Spokane August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:27 19:24
Saturday, 16th August 2025 04:47 18:59
Sunday, 31st August 2025 05:07 18:31

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