Thurston County Climate
Thurston County, Washington
Avg Annual Temp
50.5°F
Annual Precip
50.6"
Annual Snowfall
3.9"
Extreme Heat Days
6.4
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Thurston County Weather
Thurston’s Mild Marine West Coast Climate
Thurston County averages 50.5°F annually, placing it closer to the national median than its northern neighbors. The climate is typical of the Pacific Northwest, characterized by mild temperatures and high moisture.
Slightly Warmer than the Washington Average
At 50.5°F, the county is slightly warmer than the state average of 49.9°F. This reflects the moderating influence of the Puget Sound on local weather patterns.
Wetter but Milder than Eastern Counties
The county receives 50.6 inches of precipitation annually, more than double the amount seen in Stevens County. Conversely, it sees only 3.9 inches of snow, keeping winters much more manageable.
Consistent Rain and Low Extreme Heat
Extreme heat is rare here, with only 6 days reaching 90°F or higher each year. Summers are mild at 62.5°F, while winters remain relatively warm with a December-February average of 39.7°F.
Gear Up for Consistent Rainfall
High-quality rain gear and home gutter maintenance are essential for managing the 50.6 inches of annual rain. While heavy snow is rare, residents should prepare for damp, overcast winters.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.