Green River weather in May 2025

Expect daytime maximum temperatures of 18°C in Green River in May based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 18°C maximum daytime temperature in May in Green River18
    18°C max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in May in Green River9
    9 days with some rainfall
  • 1°C minimum night-time temperature in May in Green River1
    1°C 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
  • 31 mm monthly rainfall in May in Green River31
    31 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in May in Green River9
    9 (Very High) UV index

More about Green River

Green River by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Wyoming

Cosmos: up to £900 savings on 2026 tours

  • Save up to £900 per couple on 2026 tours worldwide
  • Discount varies by destination. T&Cs apply
  • Travel between 1st Jan & 31st Dec 2026 (inclusive)
Go to Cosmos deal >>

Expires at 23:59 on Tuesday 30th Sep 2025 · View all Cosmos offers

CosmosTour deal finder

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 / mm)  |  Imperial (°F / inches)

Back to top

More about the USA

How hot is it in Green River in May?

Daytime temperatures usually reach 18°C in Green River in May, falling to 1°C at night.

How sunny is it in Green River in May?

There are normally 10 hours of bright sunshine each day in Green River in May - that's 67% of daylight hours.

Does it rain in Green River in May?

There are usually 9 days with some rain in Green River in May and the average monthly rainfall is 31mm.

Green River May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:14 19:16
Friday, 16th May 2025 04:57 19:32
Saturday, 31st May 2025 04:47 19:45

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^