Riverton weather in January 2026

Expect daytime maximum temperatures of -1°C in Riverton, Wyoming in January based on long-term weather averages. There are 6 hours of sunshine per day on average, which might fall as snow.

  • -1°C maximum daytime temperature in January in Riverton-1
    -1°C max day temperature
  • 6 hours of sunshine per day
  • 5 days with some rainfall in January in Riverton5
    5 days with some rainfall
  • -16°C minimum night-time temperature in January in Riverton-16
    -16°C min night temperature
  • 9 hours of daylight per day in January in Riverton9
    9 hours of daylight per day
  • No heat & humidity in January in Riverton0
    No heat & humidity
  • 6 mm monthly rainfall in January in Riverton6
    6 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Riverton1
    1 (Low) UV index

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The January 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 / mm)  |  Imperial (°F / inches)

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How cold is it in Riverton in January?

Daytime temperatures usually reach -1°C in Riverton in January, falling to -16°C at night.

How sunny is it in Riverton in January?

There are normally 6 hours of bright sunshine each day in Riverton in January - that's 64% of daylight hours.

Does it rain in Riverton in January?

There are usually 5 days with some rain in Riverton in January and the average monthly rainfall is 6mm. Rain may fall as snow in this month.

Riverton January sunrise & sunset times

Browse the sunrise and sunset times for Riverton in January 2026. Select a month to view Riverton sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:45 16:50
Friday, 16th January 2026 07:41 17:06
Saturday, 31st January 2026 07:29 17:25

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