Washington State weather in December 2024

Expect 46°F daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Washington State in December. Check more long-term weather averages for Washington State in December before you book your next holiday to Washington State in 2024/2025.

  • 46°F maximum daytime temperature in December in Washington State (Seattle)46
    46°F max day temperature
  • 2 hours of sunshine per day
  • 18 days with some rainfall in December in Washington State (Seattle)18
    18 days with some rainfall
  • 36°F minimum night-time temperature in December in Washington State (Seattle)36
    36°F min night temperature
  • 8 hours of daylight per day in December in Washington State (Seattle)8
    8 hours of daylight per day
  • No heat & humidity in December in Washington State (Seattle)0
    No heat & humidity
  • 5.9 inches monthly rainfall in December in Washington State (Seattle)5.9
    5.9 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in December in Washington State (Seattle)1
    1 (Low) UV index

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The December weather guide for Washington State (Seattle) 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.

Top Washington State destinations

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

All Washington State destinations

Metric (°C)  |  Imperial (°F)

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How warm is it in Washington State in December?

Daytime temperatures usually reach 46°F in Seattle, Washington State in December, falling to 36°F at night.

How sunny is it in Washington State in December?

There are normally 2 hours of bright sunshine each day in Seattle, Washington State in December - that's 21% of daylight hours.

Does it rain in Washington State in December?

There are usually 18 days with some rain in Seattle, Washington State in December and the average monthly rainfall is 5.9 inches.

Washington State December sunrise & sunset times

Browse the sunrise and sunset times for Washington State in December 2024. Select a month to view Washington State sunrise and sunset times for the next 12 months. The Washington State sunrise and sunset times shown below are for Seattle.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2024 07:37 16:20
Monday, 16th December 2024 07:52 16:19
Tuesday, 31st December 2024 07:58 16:28

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