Montana weather in January 2025

Expect -1°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Montana in January. Check more long-term weather averages for Montana in January before you book your next holiday to Montana in 2025/2026.

  • -1°C maximum daytime temperature in January in Montana (Helena)-1
    -1°C max day temperature
  • 4 hours of sunshine per day
  • 9 days with some rainfall in January in Montana (Helena)9
    9 days with some rainfall
  • -13°C minimum night-time temperature in January in Montana (Helena)-13
    -13°C min night temperature
  • 9 hours of daylight per day in January in Montana (Helena)9
    9 hours of daylight per day
  • No heat & humidity in January in Montana (Helena)0
    No heat & humidity
  • 17 mm monthly rainfall in January in Montana (Helena)17
    17 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Montana (Helena)1
    1 (Low) UV index

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The January 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.

Top Montana destinations

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

All Montana destinations

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

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How cold is it in Montana in January?

Daytime temperatures usually reach -1°C in Helena, Montana in January, falling to -13°C at night.

How sunny is it in Montana in January?

There are normally 4 hours of bright sunshine each day in Helena, Montana in January - that's 43% of daylight hours.

Does it rain in Montana in January?

There are usually 9 days with some rain in Helena, Montana in January and the average monthly rainfall is 17mm. Rain may fall as snow in this month.

Montana January sunrise & sunset times

Browse the sunrise and sunset times for Montana in January 2025. Select a month to view Montana sunrise and sunset times for the next 12 months. The Montana sunrise and sunset times shown below are for Helena.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 08:12 16:52
Thursday, 16th January 2025 08:07 17:09
Friday, 31st January 2025 07:53 17:31

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