McClain County Climate
McClain County, Oklahoma
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
61.4°F
Annual Precip
36.3"
Annual Snowfall
6.2"
Extreme Heat Days
76
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
5,269
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: McClain County
Climate Verdict
McClain County has a warm, averaging 61.4°F year-round, moderate rainfall of 36.3 inches per year, significant summer heat with 75.55 days annually above 90°F, light snow averaging 6.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 39.5°F. summers are hot, with July averaging 82.5°F. The 43°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
McClain County closely matches the Oklahoma statewide average temperature of 60.4°F.
Climate Profile
About McClain County Weather
Warm and Sunny Central Oklahoma
McClain County features an annual average temperature of 61.4°F, well above the national median. The county sees 36.3 inches of rain, typical for the humid subtropical region.
Matching the State's Climate Profile
The county is slightly warmer than the 60.4°F state average. Its 36.3 inches of annual precipitation nearly mirrors the Oklahoma state average of 37.2 inches.
Slightly Warmer than Logan County
McClain is about one degree warmer annually than Logan County to the north. It receives 6.2 inches of snow, which is slightly less than Logan's 7.3 inches.
Long Summers and Steady Sun
The county endures 76 days of extreme heat above 90°F, mostly during the 80.6°F average summer. Winter is mild at 41.7°F, accompanied by 6.2 inches of snow.
Balanced Seasonal Preparation Required
Plan for 76 days of extreme heat with efficient cooling and sun-blocking window treatments. Keep moderate winter gear on hand for the 6.2 inches of annual snowfall.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.