Jackson Hole weather in September 2025

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

  • 66°F maximum daytime temperature in September in Jackson Hole66
    66°F max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in September in Jackson Hole7
    7 days with some rainfall
  • 34°F minimum night-time temperature in September in Jackson Hole34
    34°F min night temperature
  • 12 hours of daylight per day in September in Jackson Hole12
    12 hours of daylight per day
  • No heat & humidity in September in Jackson Hole0
    No heat & humidity
  • 1.4 inches monthly rainfall in September in Jackson Hole1.4
    1.4 inches of monthly rainfall
  • UV (maximum) index 7 (High) in September in Jackson Hole7
    7 (High) UV index

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The September weather guide for Wyoming (Jackson Hole) 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 Jackson Hole in September?

Daytime temperatures usually reach 66°F in Jackson Hole in September, falling to 34°F at night.

How sunny is it in Jackson Hole in September?

There are normally 9 hours of bright sunshine each day in Jackson Hole in September - that's 72% of daylight hours.

Does it rain in Jackson Hole in September?

There are usually 7 days with some rain in Jackson Hole in September and the average monthly rainfall is 1.4 inches.

Jackson Hole September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:47 18:58
Monday, 15th September 2025 06:03 18:32
Tuesday, 30th September 2025 06:20 18:05

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