Tillamook County Climate
Tillamook County, Oregon
Avg Annual Temp
51.3°F
Annual Precip
84.6"
Annual Snowfall
0.6"
Extreme Heat Days
0.5333333333333333
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Tillamook County Weather
The Epicenter of Coastal Rainfall
Tillamook County's 51.3°F average is slightly below the national median, but its 84.6 inches of rain is extraordinary. This makes it one of the wettest environments in the entire United States.
Surpassing Oregon's High Precipitation Norms
While the county’s 51.3°F average is close to the state mean, its rainfall is double the state average. It records 84.6 inches of precipitation compared to the Oregon average of 37.4 inches.
The Wettest and Mildest Neighbor
Tillamook is much wetter than Polk County, receiving about 7 inches more rain annually. It is also significantly cooler in the summer than interior counties like Multnomah.
Always Mild, Rarely Frozen
Extreme heat is non-existent here, with only 1 day over 90°F per year. Snow is equally rare at 0.6 inches annually, as winter temperatures stay well above freezing with a 44.5°F average.
Dehumidifiers are a Local Necessity
With nearly 85 inches of rain, managing indoor humidity and preventing mold is a primary concern for homeowners. Air conditioning is rarely needed, but high-quality waterproof gear is used year-round.
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.