Yosemite weather in September 2025

Expect 64°F daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Yosemite in September. Check more long-term weather averages for Yosemite in September before you book your next holiday to California in 2025/2026.

  • 64°F maximum daytime temperature in September in Yosemite64
    64°F max day temperature
  • 10 hours of sunshine per day
  • 5 days with some rainfall in September in Yosemite5
    5 days with some rainfall
  • 36°F minimum night-time temperature in September in Yosemite36
    36°F min night temperature
  • 12 hours of daylight per day in September in Yosemite12
    12 hours of daylight per day
  • No heat & humidity in September in Yosemite0
    No heat & humidity
  • 0.9 inches monthly rainfall in September in Yosemite0.9
    0.9 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Yosemite8
    8 (Very High) UV index

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The September weather guide for California (Yosemite) 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)  |  Imperial (°F)

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More about California

How hot is it in Yosemite in September?

Daytime temperatures usually reach 64°F in Yosemite in September, falling to 36°F at night.

How sunny is it in Yosemite in September?

There are normally 10 hours of bright sunshine each day in Yosemite in September - that's 80% of daylight hours.

Does it rain in Yosemite in September?

There are usually 5 days with some rain in Yosemite in September and the average monthly rainfall is 0.9 inches.

Yosemite September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:28 18:27
Monday, 15th September 2025 05:40 18:06
Tuesday, 30th September 2025 05:53 17:42

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