Polk County Climate
Polk County, Oregon
Avg Annual Temp
50.1°F
Annual Precip
77.3"
Annual Snowfall
5.6"
Extreme Heat Days
10.366666666666667
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Polk County Weather
Cooler and Significantly Wetter than Average
Polk County’s 50.1°F annual average is cooler than the national median. The standout metric is its 77.3 inches of annual precipitation, which is more than double the national average.
Oregon's Rain-Drenched Valley Center
The county matches the state average temperature of 50.5°F almost perfectly. However, it receives 77.3 inches of rain, which is more than twice the state average of 37.4 inches.
Wetter Than Its Northern Neighbors
Polk County is much wetter than Multnomah County, receiving nearly 30 inches more rain annually. It remains cooler than Multnomah by over four degrees on average.
Mild Summers and Very Wet Winters
Summer is mild with only 10 days of extreme heat and a July average of 64.2°F. Winters are characterized by rain rather than frozen precipitation, with only 5.6 inches of annual snowfall.
Prioritize Waterproofing and Drainage
With over 77 inches of rain, ensuring proper home drainage and gutter maintenance is critical. Residents rarely need heavy snow equipment but should invest in high-performance moisture-wicking clothing.
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.