Crater Lake weather in September 2025

Expect 19°C 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.

  • 19°C maximum daytime temperature in September in Crater Lake19
    19°C max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in September in Crater Lake7
    7 days with some rainfall
  • -1°C minimum night-time temperature in September in Crater Lake-1
    -1°C 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
  • 53 mm monthly rainfall in September in Crater Lake53
    53 mm 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Crater Lake in September?

Daytime temperatures usually reach 19°C in Crater Lake in September, falling to -1°C 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 53mm.

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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