Fairfield County Climate
Fairfield County, Ohio
Avg Annual Temp
52.7°F
Annual Precip
40.2"
Annual Snowfall
—
Extreme Heat Days
18.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Fairfield County Weather
Warm and moist temperate climate
Fairfield County's 52.7°F average annual temperature is slightly warmer than the national median. It experiences a moist continental climate with consistent rainfall throughout the year.
One of Ohio's warmer regions
The county stays warmer than the Ohio state average of 51.5°F, recording a 52.7°F mean temperature. It benefits from its central-southern positioning within the state.
Similar to the capital region
Fairfield's climate closely tracks neighbor Franklin County, though it is slightly cooler than Franklin's 53.2°F. It receives 40.2 inches of precipitation, very close to the state average of 41.2 inches.
Significant heat and mild winters
Summers are intense with 19 extreme heat days over 90°F and a summer average of 72.5°F. Winters are relatively mild for Ohio, averaging 31.9°F during the coldest months.
Budget for summer cooling costs
With 19 days of extreme heat, air conditioning is a necessity for local residents. While specific snowfall data is limited, the 29.3°F January average suggests a need for reliable winter weatherization.
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.