USA weather in December 2025

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

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The December weather guide for USA (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.

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Below are average maximum temperatures at popular countries, regions and places in the USA in December. Select a holiday destination to see more weather parameters.

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Metric (°C / mm)  |  Imperial (°F / inches)

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More about the USA

How warm is it in the USA in December?

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

How sunny is it in the USA in December?

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

Does it rain in the USA in December?

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

USA December sunrise & sunset times

Browse the sunrise and sunset times for USA in December 2025. Select a month to view USA sunrise and sunset times for the next 12 months. The USA 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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