Green River weather in August 2026

Expect daytime maximum temperatures of 81°F in Green River, Wyoming in August based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 81°F maximum daytime temperature in August in Green River81
    81°F max day temperature
  • 10 hours of sunshine per day
  • 6 days with some rainfall in August in Green River6
    6 days with some rainfall
  • 45°F minimum night-time temperature in August in Green River45
    45°F min night temperature
  • 14 hours of daylight per day in August in Green River14
    14 hours of daylight per day
  • Low heat & humidity in August in Green RiverL
    Low heat & humidity
  • 0.7 inches monthly rainfall in August in Green River0.7
    0.7 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Green River9
    9 (Very High) UV index

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The August 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 August?

Daytime temperatures usually reach 81°F in Green River in August with low heat and humidity, falling to 52°F at night.

How sunny is it in Green River in August?

There are normally 10 hours of bright sunshine each day in Green River in August - that's 70% of daylight hours.

Does it rain in Green River in August?

There are usually 10 days with some rain in Green River in August and the average monthly rainfall is 1.6 inches.

Green River August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2026 05:13 19:35
Sunday, 16th August 2026 05:28 19:16
Monday, 31st August 2026 05:43 18:52

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