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

More about Keystone

Keystone by month

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

Recommended for South Dakota

  • Kids stay & eat for free at Marriot Bonvoy
  • Destinations include Europe, Middle East & Africa
  • Valid for up to 2 adults & 2 kids aged up to 12

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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