Ottawa County Climate
Ottawa County, Oklahoma
Avg Annual Temp
58.7°F
Annual Precip
—
Annual Snowfall
—
Extreme Heat Days
57.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Precipitation data coming soon
Seasonal Overview
National Comparison
Data pending
Climate Profile
About Ottawa County Weather
A Mild Subtropical Climate in Northeast Oklahoma
Ottawa County maintains an average annual temperature of 58.7°F, notably warmer than the national median of roughly 55°F. This humid subtropical environment experiences significant variation between its distinct seasons.
Cooler than the Oklahoma State Average
The county's 58.7°F annual average sits nearly two degrees below the Oklahoma state average of 60.4°F. This makes Ottawa one of the cooler regions in a state known for its intense southern heat.
Regional Variation Across the Border
While neighboring areas to the south often see higher averages, Ottawa stays relatively temperate. While annual precipitation data is limited, the county shares the lush, green landscape typical of the Ozark plateau fringe.
Extreme Heat with Crisp Winters
Summers are intense with 57 days exceeding 90°F and a July average of 80.4°F. Winters provide a sharp contrast, as the January average drops to 35.5°F, though local snowfall data remains unavailable.
Preparing for Significant Seasonal Swings
Residents should prioritize high-efficiency HVAC systems to manage the 57 extreme heat days annually. With winter lows averaging in the mid-30s, standard winterization for homes and vehicles is essential for the region.
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.