Clark County Climate
Clark County, Ohio
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.5°F
Annual Precip
41.1"
Annual Snowfall
18.7"
Extreme Heat Days
18
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,188
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Clark County
Climate Verdict
Clark County has a mild, with an average annual temperature of 51.5°F, moderately wet with 41.1 inches of annual precipitation, rare extreme heat with only 18.25 days above 90°F annually, light snow averaging 18.7 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 27.3°F. summers are warm — July averages 73.3°F. The 46°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Clark County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Clark County closely matches the Ohio statewide average temperature of 51.5°F.
Climate Profile
About Clark County Weather
Typical Temperate Weather Patterns
Clark County’s annual average of 51.5°F aligns closely with the national median for the temperate Midwest. The region experiences a standard humid continental cycle of warm summers and cold winters.
Matching the Ohio Baseline
The county’s 51.5°F average perfectly matches the Ohio state average. Its 41.1 inches of annual precipitation is nearly identical to the state average of 41.2 inches, making it a climate bellwether for the region.
Stable Central Ohio Climate
Clark is notably cooler than Butler County to the southwest, which sees 14 more extreme heat days per year. It shares a very similar precipitation and temperature profile with its neighbor, Champaign County.
Steady Rainfall and Moderate Snow
The county sees 18.7 inches of snow annually, balanced by a modest 18 days of heat reaching 90°F or higher. July averages stay comfortable at 73.3°F, while January dips to a cold 27.3°F.
Prepare for Moderate Snowfall
Residents should maintain standard snow removal tools for the nearly 19 inches of annual accumulation. A dual-focus on summer insulation and winter heating ensures comfort through the county's balanced seasonal extremes.
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.