South Dakota weather in December 2021

  • -2°C maximum daytime temperature in December in South Dakota (Sioux Falls)-2
    -2°C max day temperature
  • 4 hours of sunshine per day
  • 6 days with some rainfall in December in South Dakota (Sioux Falls)6
    6 days with some rainfall
  • -13°C minimum night-time temperature in December in South Dakota (Sioux Falls)-13
    -13°C min night temperature
  • 9 hours of daylight per day in December in South Dakota (Sioux Falls)9
    9 hours of daylight per day
  • No heat & humidity in December in South Dakota (Sioux Falls)0
    No heat & humidity
  • 17 mm monthly rainfall in December in South Dakota (Sioux Falls)17
    17 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in December in South Dakota (Sioux Falls)1
    1 (Low) UV index

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

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Recommended for South Dakota

The December weather guide for South Dakota (Sioux Falls) 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)

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More about the USA

How cold is it in South Dakota in December?

Daytime temperatures usually reach -2°C in Sioux Falls, South Dakota in December, falling to -13°C at night.

How sunny is it in South Dakota in December?

There are normally 4 hours of bright sunshine each day in Sioux Falls, South Dakota in December - that's 49% of daylight hours.

Does it rain in South Dakota in December?

There are usually 6 days with some rain in Sioux Falls, South Dakota in December and the average monthly rainfall is 17mm. Rain may fall as snow in this month.

South Dakota December sunrise & sunset times

Browse the sunrise and sunset times for South Dakota in December 2021. Select a month to view South Dakota sunrise and sunset times for the next 12 months. The South Dakota sunrise and sunset times shown below are for Sioux Falls.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st December 2021 07:40 16:52
Thursday, 16th December 2021 07:54 16:51
Friday, 31st December 2021 08:00 17:00

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