Helena weather in October 2025

Expect 57°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Helena in October. Check more long-term weather averages for Helena in October before you book your next holiday to Montana in 2025/2026.

  • 57°F maximum daytime temperature in October in Helena57
    57°F max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in October in Helena6
    6 days with some rainfall
  • 30°F minimum night-time temperature in October in Helena30
    30°F min night temperature
  • 11 hours of daylight per day in October in Helena11
    11 hours of daylight per day
  • No heat & humidity in October in Helena0
    No heat & humidity
  • 0.7 inches monthly rainfall in October in Helena0.7
    0.7 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Helena3
    3 (Moderate) UV index

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The October weather guide for Montana (Helena) 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 Helena in October?

Daytime temperatures usually reach 57°F in Helena in October, falling to 30°F at night.

How sunny is it in Helena in October?

There are normally 7 hours of bright sunshine each day in Helena in October - that's 60% of daylight hours.

Does it rain in Helena in October?

There are usually 6 days with some rain in Helena in October and the average monthly rainfall is 0.7 inches.

Helena October sunrise & sunset times

Browse the sunrise and sunset times for Helena in October 2025. Select a month to view Helena sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:27 18:07
Thursday, 16th October 2025 06:48 17:39
Friday, 31st October 2025 07:09 17:14

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