D.C. weather in December 2025

Expect daytime maximum temperatures of 8°C in D.C., USA in December based on long-term weather averages. There are 4 hours of sunshine per day on average with typically 82 mm of rainfall in the month.

  • 8°C maximum daytime temperature in December in D.C. (Washington)8
    8°C max day temperature
  • 4 hours of sunshine per day
  • 9 days with some rainfall in December in D.C. (Washington)9
    9 days with some rainfall
  • -1°C minimum night-time temperature in December in D.C. (Washington)-1
    -1°C min night temperature
  • 9 hours of daylight per day in December in D.C. (Washington)9
    9 hours of daylight per day
  • No heat & humidity in December in D.C. (Washington)0
    No heat & humidity
  • 82 mm monthly rainfall in December in D.C. (Washington)82
    82 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in D.C. (Washington)2
    2 (Low) UV index

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The December weather guide for D.C., represented by Washington, (Washington) 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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More about the USA

How warm is it in D.C. in December?

Daytime temperatures usually reach 8°C in Washington, D.C. in December, falling to -1°C at night.

How sunny is it in D.C. in December?

There are normally 4 hours of bright sunshine each day in Washington, D.C. in December - that's 45% of daylight hours.

Does it rain in D.C. in December?

There are usually 9 days with some rain in Washington, D.C. in December and the average monthly rainfall is 82mm.

D.C. December sunrise & sunset times

Browse the sunrise and sunset times for D.C. in December 2025. Select a month to view D.C. sunrise and sunset times for the next 12 months. The D.C. sunrise and sunset times shown below are for Washington.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:08 16:46
Tuesday, 16th December 2025 07:20 16:47
Wednesday, 31st December 2025 07:27 16:56

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