Linn County Climate
Linn County, Oregon
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
49.5°F
Annual Precip
60.9"
Annual Snowfall
23.2"
Extreme Heat Days
16
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
1,821
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Linn County
Climate Verdict
Linn County has a cool, averaging 49.5°F annually, very wet conditions receiving 60.9 inches of precipitation annually, rare extreme heat with only 16.285714285714285 days above 90°F annually, moderate snowfall of 23.2 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 37.1°F. summers are pleasantly cool with July averaging 65.1°F. The climate is remarkably stable year-round, with only a 28°F difference between January and July. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Linn County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Linn County closely matches the Oregon statewide average temperature of 50.5°F, it is also noticeably wetter, receiving 23.4 inches more precipitation than the state average.
Climate Profile
About Linn County Weather
Temperate Climate with Heavy Precipitation
Linn County's 49.5°F annual average is cooler than the national median. This region is characterized by high rainfall and moderate seasonal shifts.
Cooler and Wetter Than Average
Linn averages 60.9 inches of annual precipitation, which is 60% higher than the Oregon average. Its average temperature is also exactly one degree cooler than the state average.
More Snow Than Valley Neighbors
Linn County sees 23.2 inches of snow annually, which is significantly higher than Marion County's 5.6 inches. It remains wetter and cooler than its neighbors to the north and south.
Balanced Seasons and Snowy Peaks
Winters average 37.6°F and bring 23.2 inches of snow, reflecting the county's reach into the Cascades. Summers are mild at 62.8°F with only 16 days over 90°F.
Prepare for Rainy Winters and Snow
Residents should have reliable heating and snow tires for the 23.2 inches of annual snowfall. Continuous rain for much of the year requires excellent home gutter systems and drainage.
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.