West Yellowstone weather in September 2024

Expect 64°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in West Yellowstone in September. Check more long-term weather averages for West Yellowstone in September before you book your next holiday to Montana in 2024/2025.

  • 64°F maximum daytime temperature in September in West Yellowstone64
    64°F max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in September in West Yellowstone8
    8 days with some rainfall
  • 32°F minimum night-time temperature in September in West Yellowstone32
    32°F min night temperature
  • 12 hours of daylight per day in September in West Yellowstone12
    12 hours of daylight per day
  • No heat & humidity in September in West Yellowstone0
    No heat & humidity
  • 1.7 inches monthly rainfall in September in West Yellowstone1.7
    1.7 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in West Yellowstone6
    6 (High) UV index

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The September weather guide for Montana (West Yellowstone) 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 West Yellowstone in September?

Daytime temperatures usually reach 64°F in West Yellowstone in September, falling to 32°F at night.

How sunny is it in West Yellowstone in September?

There are normally 9 hours of bright sunshine each day in West Yellowstone in September - that's 69% of daylight hours.

Does it rain in West Yellowstone in September?

There are usually 8 days with some rain in West Yellowstone in September and the average monthly rainfall is 1.7 inches.

West Yellowstone September sunrise & sunset times

Browse the sunrise and sunset times for West Yellowstone in September 2024. Select a month to view West Yellowstone sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st September 2024 06:48 20:00
Sunday, 15th September 2024 07:04 19:34
Monday, 30th September 2024 07:22 19:06

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