Great Falls weather in January 2025

Expect -2°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Great Falls in January. Check more long-term weather averages for Great Falls in January before you book your next holiday to Montana in 2025/2026.

  • -2°C maximum daytime temperature in January in Great Falls-2
    -2°C max day temperature
  • 4 hours of sunshine per day
  • 9 days with some rainfall in January in Great Falls9
    9 days with some rainfall
  • -12°C minimum night-time temperature in January in Great Falls-12
    -12°C min night temperature
  • 9 hours of daylight per day in January in Great Falls9
    9 hours of daylight per day
  • No heat & humidity in January in Great Falls0
    No heat & humidity
  • 20 mm monthly rainfall in January in Great Falls20
    20 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Great Falls1
    1 (Low) UV index

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The January weather guide for Montana (Great Falls) 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 / mm)  |  Imperial (°F / inches)

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How cold is it in Great Falls in January?

Daytime temperatures usually reach -2°C in Great Falls in January, falling to -12°C at night.

How sunny is it in Great Falls in January?

There are normally 4 hours of bright sunshine each day in Great Falls in January - that's 45% of daylight hours.

Does it rain in Great Falls in January?

There are usually 9 days with some rain in Great Falls in January and the average monthly rainfall is 20mm. Rain may fall as snow in this month.

Great Falls January sunrise & sunset times

Browse the sunrise and sunset times for Great Falls in January 2025. Select a month to view Great Falls sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 08:13 16:45
Thursday, 16th January 2025 08:07 17:03
Friday, 31st January 2025 07:52 17:26

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