Decatur weather in December 2024

Expect 3°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Decatur in December. Check more long-term weather averages for Decatur in December before you book your next holiday to Illinois in 2024/2025.

  • 3°C maximum daytime temperature in December in Decatur3
    3°C max day temperature
  • 4 hours of sunshine per day
  • 11 days with some rainfall in December in Decatur11
    11 days with some rainfall
  • -6°C minimum night-time temperature in December in Decatur-6
    -6°C min night temperature
  • 9 hours of daylight per day in December in Decatur9
    9 hours of daylight per day
  • No heat & humidity in December in Decatur0
    No heat & humidity
  • 72 mm monthly rainfall in December in Decatur72
    72 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Decatur2
    2 (Low) UV index

More about Decatur

Decatur by month

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The December weather guide for Illinois (Decatur) 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 Decatur in December?

Daytime temperatures usually reach 3°C in Decatur in December, falling to -6°C at night.

How sunny is it in Decatur in December?

There are normally 4 hours of bright sunshine each day in Decatur in December - that's 43% of daylight hours.

Does it rain in Decatur in December?

There are usually 11 days with some rain in Decatur in December and the average monthly rainfall is 72mm. Rain may fall as snow in this month.

Decatur December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2024 06:59 16:31
Monday, 16th December 2024 07:11 16:32
Tuesday, 31st December 2024 07:17 16:41

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