Seminole County Climate
Seminole County, Oklahoma
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
61.2°F
Annual Precip
42.6"
Annual Snowfall
3.6"
Extreme Heat Days
82
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
5,242
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Seminole County
Climate Verdict
Seminole County has a warm, averaging 61.2°F year-round, moderately wet with 42.6 inches of annual precipitation, significant summer heat with 82 days annually above 90°F, light snow averaging 3.6 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 39.0°F. summers are hot, with July averaging 82.8°F. The 44°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Seminole County closely matches the Oklahoma statewide average temperature of 60.4°F, it is also noticeably wetter, receiving 5.3 inches more precipitation than the state average.
Climate Profile
About Seminole County Weather
Consistently warmer than the national median
Seminole County's average annual temperature of 61.2°F is significantly higher than the typical U.S. county experience. It pairs this warmth with a robust 42.6 inches of annual precipitation.
Exceeding Oklahoma's average thermal baseline
The county is warmer and wetter than the state averages of 60.4°F and 37.2 inches respectively. It represents a transition zone into the more humid eastern portion of the state.
Warmer than nearby Rogers County
At 61.2°F, Seminole is warmer than Rogers County and receives more snow than its more urban neighbors. It experiences 82 extreme heat days, which is 20 more than Rogers County typically sees.
Eighty days of extreme summer heat
July brings an average of 82.8°F, contributing to a total of 82 days reaching 90°F or higher. Winter remains brief and mild with an average of 41.3°F and only 3.6 inches of annual snowfall.
Plan for long, hot summer seasons
The high number of extreme heat days makes reliable air conditioning a primary necessity for local residents. Light, breathable clothing is essential given the combination of 82-degree July averages and high regional humidity.
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.