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October Rainfall Precipitation in Washington State

Washington State is a region in the United States of America. In October precipitation ranges from low in Richland with 15 mm of rainfall to heavy in Mount Rainier National Park with 295 mm of snow/rainfall.

Where and how much does it rain in Washington State in October?

Find the average total precipitation in October for the most popular destinations in Washington State on the map below. Click on a destination dot for more detailed information.

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Legend heavy rainfall high moderate low almost none
Heavy rainfall has been defined as more than 160 mm precipitation. High: 90 mm to 160 mm. Moderate: 30 mm to 90 mm. Low: 5 mm to 30 mm.

  • How much rainfall does Washington State receive in October?
  • During October, Seattle often sees a mix of wet and dry days, with an average rainfall of around 100 mm.

  • What is the wettest city in October in Washington State?
  • In our records, Mount Rainier National Park stands out as having an average precipitation level of 295 mm, making it the wettest location.

  • What is the driest city in October in Washington State?
  • Based on our records, Richland registers the lowest average precipitation, with only 15 mm.

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