Pierce County Climate
Pierce County, Washington
Avg Annual Temp
48.3°F
Annual Precip
61.1"
Annual Snowfall
38.3"
Extreme Heat Days
2.466666666666667
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Pierce County Weather
A Temperate Climate Beneath the Peak
Pierce County averages 48.3°F annually, trailing the national median temperature. Its annual precipitation of 61.1 inches reflects the influence of Mt. Rainier and the Puget Sound, creating a moist, temperate environment.
Colder than Average for Western Washington
The county's 48.3°F annual average is lower than the Washington state average of 49.9°F, largely due to high-elevation terrain. Its 61.1 inches of rain significantly exceeds the state average of 38.5 inches.
Wetter and Snowier than Nearby Snohomish
Pierce County sees 38.3 inches of annual snow, vastly outstripping Snohomish County’s 3.6 inches. This disparity is driven by the county's varied topography, which catches significantly more moisture than its northern neighbors.
Consistent Rains and Rare Heat
Summers are very mild with a July average of 62.3°F and only 2 days of extreme heat over 90°F. However, winters bring significant moisture and an average of 38.3 inches of snow, particularly in the foothills.
Gear Up for Variable Winter Weather
With only 2 days of extreme heat, air conditioning is often optional, but high-quality rain shells are a daily necessity. Homeowners should prepare for potential snow events and ensure drainage systems can handle over 60 inches of annual precipitation.
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.