Brown County Climate
Brown County, Ohio
Avg Annual Temp
51.6°F
Annual Precip
47.9"
Annual Snowfall
17.2"
Extreme Heat Days
20.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Brown County Weather
Hot and Humid Southern Ohio
Brown County averages 51.6°F annually and receives a heavy 47.9 inches of precipitation. This combination creates a lush, humid environment that exceeds national rainfall medians.
One of Ohio's Warmest Spots
The county's 21 extreme heat days per year is one of the highest counts in Ohio. It is also significantly wetter than the state average of 41.2 inches.
Hotter Than Most Neighbors
With 21 days over 90°F, Brown County is much hotter in summer than Athens (11 days) or Ashtabula (6 days). It is also among the wettest counties in the southern region.
Intense Heat and High Rainfall
Summers are long with a 71.4°F average and frequent heat spikes. Winters remain damp with 17.2 inches of snow and a 30.9°F seasonal average.
Plan for High Cooling Costs
Residents must maintain robust HVAC systems to navigate the 21 extreme heat days. Basement waterproofing is also recommended to handle the nearly 48 inches of annual rain.
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.