Adair County Climate
Adair County, Oklahoma
Avg Annual Temp
59.1°F
Annual Precip
49.8"
Annual Snowfall
—
Extreme Heat Days
43.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Adair County Weather
A Mild Climate with Abundant Moisture
Adair County maintains an average annual temperature of 59.1°F, which sits significantly higher than the national median. This humid subtropical climate receives 49.8 inches of annual precipitation, making it one of the wetter regions in the country.
Cooler and Wetter Than the Oklahoma Average
While Oklahoma averages 60.4°F annually, Adair County stays slightly cooler at 59.1°F. It stands out in the state for its rainfall, exceeding the Oklahoma average of 37.2 inches by over a foot each year.
The Lush Corner of Eastern Oklahoma
Adair County is characterized by higher precipitation levels than many of its western neighbors. While nearby counties face more intense dry spells, Adair's 49.8 inches of rain supports a much greener landscape.
Temperate Summers and Brisk Winters
Residents experience 43 extreme heat days per year where temperatures reach 90°F or higher, which is relatively low for Oklahoma. July averages a manageable 78.9°F, while January temperatures typically dip to 37.7°F; snowfall records are currently limited for this area.
Prepare for Rain and Moderate Heat
Homeowners should prioritize high-capacity gutter systems to handle the nearly 50 inches of annual rainfall. While summer heat is less frequent than in central Oklahoma, efficient cooling is still essential for the 43 days of extreme heat.
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.