Henry County Climate
Henry County, Ohio
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.2°F
Annual Precip
37.3"
Annual Snowfall
24.7"
Extreme Heat Days
15
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,090
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Henry County
Climate Verdict
Henry County has a mild, with an average annual temperature of 50.2°F, moderate rainfall of 37.3 inches per year, rare extreme heat with only 15.4 days above 90°F annually, moderate snowfall of 24.7 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 25.1°F. summers are warm — July averages 73.5°F. The 48°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Henry County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Henry County closely matches the Ohio statewide average temperature of 51.5°F, it is somewhat drier than average for Ohio.
Climate Profile
About Henry County Weather
A Classic Midwestern Continental Climate
Henry County averages 50.2°F annually, placing it slightly below the national median in the humid continental zone. The region experiences four distinct seasons typical of the American heartland.
Cooler and Drier Than the Ohio Average
The county's 50.2°F average temperature sits over a degree lower than the Ohio state average of 51.5°F. It also receives 37.3 inches of annual precipitation, making it notably drier than the 41.2-inch state benchmark.
More Manageable Snowfall Than Eastern Neighbors
Henry County sees 24.7 inches of snow annually, which is significantly less than the 32.7 inches recorded in Huron County to the east. This difference makes winter road maintenance slightly easier for Henry residents.
Deep Winter Chills and Sharp Summer Peaks
January brings average lows of 25.1°F, while July pushes the mercury to a 73.5°F average. Residents encounter roughly 15 extreme heat days per year where temperatures exceed 90°F.
Prepare for Wide Thermal Swings
Homeowners should ensure HVAC systems are rated for both sub-freezing winters and the 15 annual days of 90°F heat. Reliable snow removal gear is essential for the 24.7 inches of expected annual accumulation.
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.