Madison County Climate
Madison County, Ohio
Avg Annual Temp
50.4°F
Annual Precip
42.3"
Annual Snowfall
20.4"
Extreme Heat Days
12.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Madison County Weather
Cooler Inland Midwestern Plains
Madison County’s 50.4°F annual average is several degrees cooler than the national median. It experiences the full range of continental extremes without the moderating influence of a Great Lake.
Among Ohio’s Cooler Counties
The average temperature of 50.4°F is well below the Ohio state average of 51.5°F. This makes Madison one of the chillier counties in the central part of the state.
Typical Central Ohio Snowfall
The county receives 20.4 inches of snow annually, which is less than Marion County’s 25.1 inches. Total precipitation is 42.3 inches, slightly higher than the state average.
Sharp Winters and Brief Heat
Winter is notably cold here, with a seasonal average of 28.6°F and 20.4 inches of snow. Summer remains moderate with 13 extreme heat days and a July average of 72.4°F.
Winterize for Cold Temps
The 28.6°F winter average necessitates high-efficiency heating systems and pipe protection. Residents should also prepare for 42.3 inches of annual rain with proper yard grading.
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.