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May Rainfall Precipitation in Washington State

Washington State is a region in the United States of America. In May precipitation ranges from low in Moses Lake with 16 mm of rainfall to high in Mount Rainier National Park with 152 mm of snow/rainfall.

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

Find the average total precipitation in May 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.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Washington State's climate page.

  • How much rainfall does Washington State receive in May?
  • The May weather in Seattle usually sees a balance of rain and sunshine, with typical rainfall measurements reaching about 54 mm.

  • What is the wettest city in May in Washington State?
  • According to our data the wettest location is Mount Rainier National Park with an average precipitation of 152 mm.

  • What is the driest city in May in Washington State?
  • Based on our records, Moses Lake registers the lowest average precipitation, with only 16 mm.

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