Climate and Average Weather in Washington State, the United States of America

In the United States of America you have several regions, one of which is called Washington State. The most popular city in this region is Seattle, whose climate data we'll examine to provide you with an overview of what weather to expect in Washington State. For detailed climate information about other cities in the area, please refer to the section beneath the map further down the page.

In Washington State, during the months of June and September you can expect comfortable weather, with average temperatures ranging from 20°C to 25°C. The coldest month is December with an average maximum temperature of 7°C. However, the specific temperature can vary depending on the exact location within the region.

Additional climate insights:

• The months of January, February, March, April, October, November and December have a high chance of precipitation.
• November is the wettest month in Washington State. This month should be avoided if you are not a big fan of rain.
• July is the driest month.
• The warmest month in Washington State is July with an average maximum temperature of 25°C.
• The coldest month is December with an average maximum daytime temperature of 7°C.
• July is the sunniest month in Washington State.

Washington State has to deal with a number of climate types that are relatively rare in the United States. However most of Washington State has a temperate Mediterranean climate with fairly dry summers, wetter winters and moderate temperatures throughout the year.

Interested in the detailed Weather and Climate of Washington State, the United States of America?

Please select a city below the map you wish to travel to, or the one closest to your destination. Each selected city will show you the following graphs:
1. Average minimum and maximum temperature over the year
2. Average monthly precipitation over the year (rainfall, snow)
3. Average monthly hours of sunshine over the year
On certain pages we also offer other historical climate data like humidity wind speed and water temperature.