Ellis County Climate
Ellis County, Oklahoma
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
57.9°F
Annual Precip
23.4"
Annual Snowfall
—
Extreme Heat Days
74
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
4,562
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Ellis County
Climate Verdict
Ellis County has a mild, with an average annual temperature of 57.9°F, semi-arid conditions with only 23.4 inches of annual precipitation, significant summer heat with 73.6 days annually above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 35.5°F. summers are hot, with July averaging 80.5°F. The 45°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
Ellis County closely matches the Oklahoma statewide average temperature of 60.4°F, it is also noticeably drier, receiving 13.9 inches less precipitation than the state average.
Climate Profile
About Ellis County Weather
Arid Climate Above National Median
Ellis County's 57.9°F average temperature sits above the national median despite being one of the cooler counties in its region. It is very dry, averaging 23.4 inches of rain.
One of Oklahoma's Driest Counties
The county's 23.4 inches of rain is nearly 14 inches below the Oklahoma state average. Its temperature also tracks about 2.5 degrees cooler than the state mean.
Defining the Dry Western Edge
Ellis County is much drier than the central and eastern parts of the state. It shares a semi-arid profile with its neighbors on the Texas border.
Intense Sun and Dry Air
The county endures 74 days of extreme heat over 90°F each year. While official snowfall averages are unavailable, winters stay cold with a 35.5°F January mean.
Focus on Water and Insulation
Drought-resistant practices are vital given the low 23.4 inches of rain. Good home insulation helps manage the significant gap between winter lows and summer highs.
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.