Idaho weather in October 2025

Expect 18°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Idaho in October. Check more long-term weather averages for Idaho in October before you book your next holiday to Idaho in 2025/2026.

• 18
  18°C max day temperature
• 8
  8 hours of sunshine per day
• 6
  6 days with some rainfall
• 3
  3°C min night temperature
• 11
  11 hours of daylight per day
• 0
  No heat & humidity
• 19
  19 mm of monthly rainfall
• 4
  4 (Moderate) UV index

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The October weather guide for Idaho (Boise) 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.

Top Idaho destinations

Below are average maximum temperatures at popular countries, regions and places in Idaho in October. Select a holiday destination to see more weather parameters.

• 18
  Boise
• 16
  Idaho Falls
• 15
  Coeur d'Alene
• 13
  Sun Valley

All Idaho destinations

• Boise
• Coeur d'Alene
• Idaho Falls
• Lewiston
• McCall
• Salmon
• Sun Valley
• Twin Falls

Metric (°C / mm)  |  Imperial (°F / inches)

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Idaho October sunrise & sunset times

Browse the sunrise and sunset times for Idaho in October 2025. Select a month to view Idaho sunrise and sunset times for the next 12 months. The Idaho sunrise and sunset times shown below are for Boise.

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