Oregon County Climate
Oregon County, Missouri
Avg Annual Temp
55.7°F
Annual Precip
47.2"
Annual Snowfall
4.2"
Extreme Heat Days
48.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Oregon County Weather
Mild Temperatures in the Ozarks
Oregon County averages 55.7°F annually, slightly exceeding the national median. The area is characterized by high humidity and substantial annual rainfall of 47.2 inches.
Warmer than the Missouri Average
Oregon County is roughly one degree warmer than the Missouri state average of 54.9°F. It reflects the typical climate of the state's southern border region.
Cooler than its Western Neighbors
Despite being in the south, Oregon County's 55.7°F average is cooler than nearby Ozark County at 57.0°F. It also receives less snow than central Missouri, averaging only 4.2 inches.
Hot Summers and Light Snow
The county endures 48 days of extreme heat above 90°F, mostly during the 75.5°F average summer. Winters are relatively short with a January average of 33.1°F and very little snow.
Prepare for Rain and Heat
Outdoor enthusiasts should plan for 48 days of extreme heat and frequent rain. With 47.2 inches of annual precipitation, moisture-wicking gear and home dehumidifiers are highly recommended.
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.