Idaho weather in December 2019

  • 3°C maximum daytime temperature in December in Idaho (Boise)3
    3°C max day temperature
  • 3 hours of sunshine per day
  • 11 days with some rainfall in December in Idaho (Boise)11
    11 days with some rainfall
  • -6°C minimum night-time temperature in December in Idaho (Boise)-6
    -6°C min night temperature
  • 9 hours of daylight per day in December in Idaho (Boise)9
    9 hours of daylight per day
  • No heat & humidity in December in Idaho (Boise)0
    No heat & humidity
  • 36 mm monthly rainfall in December in Idaho (Boise)36
    36 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Idaho (Boise)1
    1 (Low) UV index
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The December weather guide for Idaho, represented by 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.

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

Guide to Idaho weather in December

The average maximum daytime temperature in Idaho in December is a cold 3°C (37°F). The average night-time temperature is usually a very cold -6°C (21°F). There are usually 3 hours of bright sunshine each day, which represents 38% of the 9 hours of daylight.

Expect 36mm (1.4 inches) of rainfall across the whole of December with 11 days with some rain falling. Maximum UV levels will be low (1 UV index) at midday when the skies are clear.

The weather in Idaho in December is represented by Boise.

Idaho sunrise & sunset times for December 2019

Browse the sunrise & sunset times for Idaho in December 2019. Select a month to view Idaho sunrise & sunset times for the next twelve months. The Idaho sunrise & sunset times shown below are for Boise.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2019 07:58 17:09
Monday, 16th December 2019 08:12 17:09
Tuesday, 31st December 2019 08:18 17:18
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