Tillamook County Climate
Tillamook County, Oregon
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.3°F
Annual Precip
84.6"
Annual Snowfall
0.6"
Extreme Heat Days
1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9a
Minimum winter temperature range for plant survival
1,377
Limited to cold-tolerant varieties
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Tillamook County
Climate Verdict
Tillamook County has a mild, with an average annual temperature of 51.3°F, very wet conditions receiving 84.6 inches of precipitation annually, rare extreme heat with only 0.5333333333333333 days above 90°F annually, light snow averaging 0.6 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 44.6°F. summers are cool, with July averaging only 59.5°F. The climate is remarkably stable year-round, with only a 15°F difference between January and July. December is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Tillamook County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Tillamook County closely matches the Oregon statewide average temperature of 50.5°F, it is also noticeably wetter, receiving 47.2 inches more precipitation than the state average, the county experiences 22.804581090206085 fewer extreme heat days than the state average.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.