Washington State weather in January 2023

  • 7°C maximum daytime temperature in January in Washington State (Seattle)7
    7°C max day temperature
  • 2 hours of sunshine per day
  • 18 days with some rainfall in January in Washington State (Seattle)18
    18 days with some rainfall
  • 2°C minimum night-time temperature in January in Washington State (Seattle)2
    2°C min night temperature
  • 9 hours of daylight per day in January in Washington State (Seattle)9
    9 hours of daylight per day
  • No heat & humidity in January in Washington State (Seattle)0
    No heat & humidity
  • 149 mm monthly rainfall in January in Washington State (Seattle)149
    149 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Washington State (Seattle)1
    1 (Low) UV index

Below are average maximum temperatures at popular destinations in Washington State in January. Select a destination to see more weather parameters.

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Recommended for Washington State

The January 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.

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

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More about the USA

How cold is it in Washington State in January?

Daytime temperatures usually reach 7°C in Seattle, Washington State in January, falling to 2°C at night.

How sunny is it in Washington State in January?

There are normally 2 hours of bright sunshine each day in Seattle, Washington State in January - that's 25% of daylight hours.

Does it rain in Washington State in January?

There are usually 18 days with some rain in Seattle, Washington State in January and the average monthly rainfall is 149mm.

Washington State January sunrise & sunset times

Browse the sunrise and sunset times for Washington State in January 2023. 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 January 2023 07:58 16:29
Monday, 16th January 2023 07:52 16:47
Tuesday, 31st January 2023 07:37 17:09

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