Green River weather in December 2025

Expect -1°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Green River in December. Check more long-term weather averages for Green River in December before you book your next holiday to Wyoming in 2025/2026.

  • -1°C maximum daytime temperature in December in Green River-1
    -1°C max day temperature
  • 5 hours of sunshine per day
  • 7 days with some rainfall in December in Green River7
    7 days with some rainfall
  • -14°C minimum night-time temperature in December in Green River-14
    -14°C min night temperature
  • 9 hours of daylight per day in December in Green River9
    9 hours of daylight per day
  • No heat & humidity in December in Green River0
    No heat & humidity
  • 13 mm monthly rainfall in December in Green River13
    13 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Green River1
    1 (Low) UV index

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The December 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)

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How cold is it in Green River in December?

Daytime temperatures usually reach -1°C in Green River in December, falling to -14°C at night.

How sunny is it in Green River in December?

There are normally 5 hours of bright sunshine each day in Green River in December - that's 56% of daylight hours.

Does it rain in Green River in December?

There are usually 7 days with some rain in Green River in December and the average monthly rainfall is 13mm. Rain may fall as snow in this month.

Green River December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:25 16:49
Tuesday, 16th December 2025 07:38 16:49
Wednesday, 31st December 2025 07:44 16:58

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