Helena weather in December 2020

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  • 0°C maximum daytime temperature in December in Helena0
    0°C max day temperature
  • 3 hours of sunshine per day
  • 9 days with some rainfall in December in Helena9
    9 days with some rainfall
  • -12°C minimum night-time temperature in December in Helena-12
    -12°C min night temperature
  • 9 hours of daylight per day in December in Helena9
    9 hours of daylight per day
  • No heat & humidity in December in Helena0
    No heat & humidity
  • 16 mm monthly rainfall in December in Helena16
    16 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Helena1
    1 (Low) UV index

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The December weather guide for Helena, Montana 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 Helena in December?

Daytime temperatures usually reach -0°C in Helena in December, falling to -12°C at night.

How sunny is it in Helena in December?

There are normally 3 hours of bright sunshine each day in Helena in December - that's 37% of daylight hours.

Does it rain in Helena in December?

There are usually 9 days with some rain in Helena in December and the average monthly rainfall is 16mm. Rain may fall as snow in this month.

Helena sunrise & sunset times for December 2020

Browse the sunrise & sunset times for Helena in December 2020. Select a month to view Helena sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st December 2020 07:52 16:42
Wednesday, 16th December 2020 08:07 16:41
Thursday, 31st December 2020 08:12 16:51
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where is warm in Montana in December for 2020/2021?

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

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