Boise weather in January 2021

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  • 2°C maximum daytime temperature in January in Boise2
    2°C max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in January in Boise12
    12 days with some rainfall
  • -6°C minimum night-time temperature in January in Boise-6
    -6°C min night temperature
  • 9 hours of daylight per day in January in Boise9
    9 hours of daylight per day
  • No heat & humidity in January in Boise0
    No heat & humidity
  • 38 mm monthly rainfall in January in Boise38
    38 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Boise1
    1 (Low) UV index
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The January weather guide for Boise, Idaho 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.

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How cold is it in Boise in January?

Daytime temperatures usually reach 2°C in Boise in January, falling to -6°C at night.

How sunny is it in Boise in January?

There are normally 4 hours of bright sunshine each day in Boise in January - that's 38% of daylight hours.

Does it rain in Boise in January?

There are usually 12 days with some rain in Boise in January and the average monthly rainfall is 38mm.

Boise sunrise & sunset times for January 2021

Browse the sunrise & sunset times for Boise in January 2021. Select a month to view Boise sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st January 2021 08:18 17:19
Saturday, 16th January 2021 08:14 17:36
Sunday, 31st January 2021 08:02 17:55
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where's warm in Idaho in January?

Below are average maximum temperatures at popular destinations in Idaho in January. Select a destination to see more weather parameters.

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