Green River weather in May 2026

Expect daytime maximum temperatures of 64°F in Green River, Wyoming in May based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 64°F maximum daytime temperature in May in Green River64
    64°F max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in May in Green River9
    9 days with some rainfall
  • 34°F minimum night-time temperature in May in Green River34
    34°F min night temperature
  • 15 hours of daylight per day in May in Green River15
    15 hours of daylight per day
  • No heat & humidity in May in Green River0
    No heat & humidity
  • 1.2 inches monthly rainfall in May in Green River1.2
    1.2 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in May in Green River9
    9 (Very High) UV index

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The May weather guide for Wyoming (Green River) 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 Green River in May?

Daytime temperatures usually reach 66°F in Green River in May, falling to 39°F at night.

How sunny is it in Green River in May?

There are normally 9 hours of bright sunshine each day in Green River in May - that's 64% of daylight hours.

Does it rain in Green River in May?

There are usually 11 days with some rain in Green River in May and the average monthly rainfall is 2.6 inches.

Green River May sunrise & sunset times

Browse the sunrise and sunset times for Green River in May 2026. Select a month to view Green River sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:15 19:16
Saturday, 16th May 2026 04:58 19:32
Sunday, 31st May 2026 04:47 19:45

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