Crater Lake weather in September 2025

Expect 66°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Crater Lake in September. Check more long-term weather averages for Crater Lake in September before you book your next holiday to Oregon in 2025/2026.

  • 66°F maximum daytime temperature in September in Crater Lake66
    66°F max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in September in Crater Lake7
    7 days with some rainfall
  • 30°F minimum night-time temperature in September in Crater Lake30
    30°F min night temperature
  • 12 hours of daylight per day in September in Crater Lake12
    12 hours of daylight per day
  • No heat & humidity in September in Crater Lake0
    No heat & humidity
  • 2.1 inches monthly rainfall in September in Crater Lake2.1
    2.1 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Crater Lake6
    6 (High) UV index

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The September weather guide for Oregon (Crater Lake) 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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How hot is it in Crater Lake in September?

Daytime temperatures usually reach 66°F in Crater Lake in September, falling to 30°F at night.

How sunny is it in Crater Lake in September?

There are normally 9 hours of bright sunshine each day in Crater Lake in September - that's 75% of daylight hours.

Does it rain in Crater Lake in September?

There are usually 7 days with some rain in Crater Lake in September and the average monthly rainfall is 2.1 inches.

Crater Lake September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:34 18:43
Monday, 15th September 2025 05:49 18:18
Tuesday, 30th September 2025 06:05 17:51

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