Sun Valley weather in January 2025

Expect -2°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Sun Valley in January. Check more long-term weather averages for Sun Valley in January before you book your next holiday to Idaho in 2025/2026.

  • -2°C maximum daytime temperature in January in Sun Valley-2
    -2°C max day temperature
  • 4 hours of sunshine per day
  • 13 days with some rainfall in January in Sun Valley13
    13 days with some rainfall
  • -14°C minimum night-time temperature in January in Sun Valley-14
    -14°C min night temperature
  • 9 hours of daylight per day in January in Sun Valley9
    9 hours of daylight per day
  • No heat & humidity in January in Sun Valley0
    No heat & humidity
  • 67 mm monthly rainfall in January in Sun Valley67
    67 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Sun Valley2
    2 (Low) UV index

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The January weather guide for Idaho (Sun Valley) 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 Sun Valley in January?

Daytime temperatures usually reach -2°C in Sun Valley in January, falling to -14°C at night.

How sunny is it in Sun Valley in January?

There are normally 4 hours of bright sunshine each day in Sun Valley in January - that's 44% of daylight hours.

Does it rain in Sun Valley in January?

There are usually 13 days with some rain in Sun Valley in January and the average monthly rainfall is 67mm. Rain may fall as snow in this month.

Sun Valley January sunrise & sunset times

Browse the sunrise and sunset times for Sun Valley in January 2025. Select a month to view Sun Valley sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 08:11 17:12
Thursday, 16th January 2025 08:07 17:28
Friday, 31st January 2025 07:55 17:48

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