Madison County Climate
Madison County, Ohio
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.4°F
Annual Precip
42.3"
Annual Snowfall
20.4"
Extreme Heat Days
13
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,022
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Madison County
Climate Verdict
Madison County has a mild, with an average annual temperature of 50.4°F, moderately wet with 42.3 inches of annual precipitation, rare extreme heat with only 12.7 days above 90°F annually, moderate snowfall of 20.4 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 25.9°F. summers are warm — July averages 72.4°F. The 47°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Madison County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Madison County closely matches the Ohio statewide average temperature of 51.5°F.
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 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.