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°C maximum daytime temperature in October in Idaho (Boise)18
    18°C max day temperature
  • 8 hours of sunshine per day
  • 6 days with some rainfall in October in Idaho (Boise)6
    6 days with some rainfall
  • 3°C minimum night-time temperature in October in Idaho (Boise)3
    3°C min night temperature
  • 11 hours of daylight per day in October in Idaho (Boise)11
    11 hours of daylight per day
  • No heat & humidity in October in Idaho (Boise)0
    No heat & humidity
  • 19 mm monthly rainfall in October in Idaho (Boise)19
    19 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Idaho (Boise)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.

All Idaho destinations

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

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More about the USA

How hot is it in Idaho in October?

Daytime temperatures usually reach 18°C in Boise, Idaho in October, falling to 3°C at night.

How sunny is it in Idaho in October?

There are normally 8 hours of bright sunshine each day in Boise, Idaho in October - that's 69% of daylight hours.

Does it rain in Idaho in October?

There are usually 6 days with some rain in Boise, Idaho in October and the average monthly rainfall is 19mm.

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.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:43 18:25
Thursday, 16th October 2025 07:01 17:59
Friday, 31st October 2025 07:20 17:37

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