Carter County Climate
Carter County, Oklahoma
Avg Annual Temp
62.9°F
Annual Precip
36.7"
Annual Snowfall
2.5"
Extreme Heat Days
82.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Carter County Weather
Southern warmth in the Arbuckles
Carter County averages 62.9°F annually, placing it well above the national median for temperature. Its position in Southern Oklahoma ensures a long, warm growing season typical of the American South.
Ranks among Oklahoma's warmer counties
With an annual average of 62.9°F, Carter County is notably warmer than the state average of 60.4°F. Its 36.7 inches of rain aligns closely with the Oklahoma average of 37.2 inches.
Warmer than its northern neighbors
Carter County is significantly warmer than central counties like Cleveland, which averages 60.7°F. This region serves as a transition zone where the Plains meet the hotter Red River valley.
Intense heat and brief winters
The county endures 83 days of extreme heat over 90°F, one of the higher counts in the region. Winters are mild, featuring a January average of 41.1°F and a sparse 2.5 inches of annual snow.
Prioritize summer cooling needs
Outdoor activities require careful planning during the 81.8°F average summer months to avoid heat exhaustion. Property owners can expect minimal snow removal but should prepare for heavy thunderstorms during the spring rain season.
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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.