West Yellowstone weather in May 2025

Expect 55°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in West Yellowstone in May. Check more long-term weather averages for West Yellowstone in May before you book your next holiday to Montana in 2025/2026.

  • 55°F maximum daytime temperature in May in West Yellowstone55
    55°F max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in West Yellowstone11
    11 days with some rainfall
  • 28°F minimum night-time temperature in May in West Yellowstone28
    28°F min night temperature
  • 15 hours of daylight per day in May in West Yellowstone15
    15 hours of daylight per day
  • No heat & humidity in May in West Yellowstone0
    No heat & humidity
  • 2.2 inches monthly rainfall in May in West Yellowstone2.2
    2.2 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in West Yellowstone8
    8 (Very High) UV index

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The May 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 warm is it in West Yellowstone in May?

Daytime temperatures usually reach 55°F in West Yellowstone in May, falling to 28°F at night.

How sunny is it in West Yellowstone in May?

There are normally 9 hours of bright sunshine each day in West Yellowstone in May - that's 61% of daylight hours.

Does it rain in West Yellowstone in May?

There are usually 11 days with some rain in West Yellowstone in May and the average monthly rainfall is 2.2 inches.

West Yellowstone May sunrise & sunset times

Browse the sunrise and sunset times for West Yellowstone in May 2025. Select a month to view West Yellowstone sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:14 19:30
Friday, 16th May 2025 04:55 19:47
Saturday, 31st May 2025 04:43 20:02

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