Clatsop County Climate
Clatsop County, Oregon
Avg Annual Temp
51.6°F
Annual Precip
89.4"
Annual Snowfall
0.7"
Extreme Heat Days
0.7000000000000001
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Clatsop County Weather
Temperate Coastal Humidity and Rain
Clatsop County averages 51.6°F annually, which is slightly below the national median. It is one of the wettest places in the country, receiving a staggering 89.4 inches of precipitation every year.
Oregon's Rain-Heavy Coastal Leader
With 89.4 inches of annual precipitation, Clatsop far exceeds the Oregon state average of 37.4 inches. The average temperature of 51.6°F is just above the state mean, reflecting the stabilizing influence of the Pacific Ocean.
Cooler Summers Than Inland Neighbors
Clatsop experiences virtually no extreme heat, averaging just one day above 90°F per year. This sets it apart from inland counties where summer heat is much more frequent and intense.
Consistent Temperatures and Very Little Snow
Winter temperatures stay mild with a January average of 44.2°F and negligible snowfall of 0.7 inches. July remains cool at 60.4°F, making for one of the most stable temperature profiles in the Pacific Northwest.
Prepare for Persistent Moisture
Managing 89 inches of rain requires industrial-grade rain gear and rigorous home maintenance to prevent mold and water damage. Air conditioning is rarely needed, but dehumidifiers are a common household staple.
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.