Sun Valley weather in October 2025

Expect daytime maximum temperatures of 55°F in Sun Valley, Idaho in October based on long-term weather averages. There are 7 hours of sunshine per day on average.

  • 55°F maximum daytime temperature in October in Sun Valley55
    55°F max day temperature
  • 7 hours of sunshine per day
  • 7 days with some rainfall in October in Sun Valley7
    7 days with some rainfall
  • 25°F minimum night-time temperature in October in Sun Valley25
    25°F min night temperature
  • 11 hours of daylight per day in October in Sun Valley11
    11 hours of daylight per day
  • No heat & humidity in October in Sun Valley0
    No heat & humidity
  • 1.1 inches monthly rainfall in October in Sun Valley1.1
    1.1 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Sun Valley4
    4 (Moderate) UV index

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The October 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)  |  Imperial (°F)

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How warm is it in Sun Valley in October?

Daytime temperatures usually reach 55°F in Sun Valley in October, falling to 25°F at night.

How sunny is it in Sun Valley in October?

There are normally 7 hours of bright sunshine each day in Sun Valley in October - that's 66% of daylight hours.

Does it rain in Sun Valley in October?

There are usually 7 days with some rain in Sun Valley in October and the average monthly rainfall is 1.1 inches.

Sun Valley October sunrise & sunset times

Browse the sunrise and sunset times for Sun Valley in October 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 October 2025 06:35 18:18
Thursday, 16th October 2025 06:53 17:52
Friday, 31st October 2025 07:12 17:29

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