Keystone weather in December 2024

Expect 2°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Keystone in December. Check more long-term weather averages for Keystone in December before you book your next holiday to South Dakota in 2024/2025.

  • 2°C maximum daytime temperature in December in Keystone2
    2°C max day temperature
  • 5 hours of sunshine per day
  • 7 days with some rainfall in December in Keystone7
    7 days with some rainfall
  • -11°C minimum night-time temperature in December in Keystone-11
    -11°C min night temperature
  • 9 hours of daylight per day in December in Keystone9
    9 hours of daylight per day
  • No heat & humidity in December in Keystone0
    No heat & humidity
  • 11 mm monthly rainfall in December in Keystone11
    11 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Keystone1
    1 (Low) UV index

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The December weather guide for South Dakota (Keystone) 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 Keystone in December?

Daytime temperatures usually reach 2°C in Keystone in December, falling to -11°C at night.

How sunny is it in Keystone in December?

There are normally 5 hours of bright sunshine each day in Keystone in December - that's 56% of daylight hours.

Does it rain in Keystone in December?

There are usually 7 days with some rain in Keystone in December and the average monthly rainfall is 11mm. Rain may fall as snow in this month.

Keystone December sunrise & sunset times

Browse the sunrise and sunset times for Keystone in December 2024. Select a month to view Keystone sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2024 07:09 16:17
Monday, 16th December 2024 07:22 16:17
Tuesday, 31st December 2024 07:28 16:26

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