Riverton weather in May 2025

Expect 70°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Riverton in May. Check more long-term weather averages for Riverton in May before you book your next holiday to Wyoming in 2025/2026.

  • 70°F maximum daytime temperature in May in Riverton70
    70°F max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in May in Riverton9
    9 days with some rainfall
  • 39°F minimum night-time temperature in May in Riverton39
    39°F min night temperature
  • 15 hours of daylight per day in May in Riverton15
    15 hours of daylight per day
  • No heat & humidity in May in Riverton0
    No heat & humidity
  • 1.8 inches monthly rainfall in May in Riverton1.8
    1.8 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Riverton8
    8 (Very High) UV index

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The May weather guide for Wyoming (Riverton) 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 Riverton in May?

Daytime temperatures usually reach 70°F in Riverton in May, falling to 39°F at night.

How sunny is it in Riverton in May?

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

Does it rain in Riverton in May?

There are usually 9 days with some rain in Riverton in May and the average monthly rainfall is 1.8 inches.

Riverton May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:07 19:15
Friday, 16th May 2025 04:49 19:32
Saturday, 31st May 2025 04:37 19:46

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