Guernsey County Climate
Guernsey County, Ohio
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
52.7°F
Annual Precip
41.3"
Annual Snowfall
17.4"
Extreme Heat Days
18
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
3,372
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Guernsey County
Climate Verdict
Guernsey County has a mild, with an average annual temperature of 52.7°F, moderately wet with 41.3 inches of annual precipitation, rare extreme heat with only 17.6 days above 90°F annually, light snow averaging 17.4 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.4°F. summers are warm — July averages 73.9°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Guernsey County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Guernsey County closely matches the Ohio statewide average temperature of 51.5°F.
Climate Profile
About Guernsey County Weather
Standard Continental Patterns in Appalachia
Guernsey County averages 52.7°F, sitting right in the middle of typical national weather patterns. It experiences the humid continental climate characteristic of the eastern United States.
Consistency in the Heart of Ohio
The county's 52.7°F annual temperature is just above the Ohio average of 51.5°F. Precipitation levels of 41.3 inches almost exactly match the state's typical 41.2-inch benchmark.
Warmer Summers than Eastern Peers
Guernsey experiences 18 heat days over 90°F, significantly more than neighboring Harrison County’s 6 days. It averages 17.4 inches of snow, which is less than the counties to its immediate north.
Hot July Days and Moderate Snowfall
Summer heat is noticeable with an average July temperature of 73.9°F and 18 extreme heat days. Winter stays relatively mild for the region, averaging 31.9°F from December through February.
Expect Summer Heat Spikes
Prepare for nearly three weeks of 90-degree weather by ensuring air conditioning units are serviced by June. Outdoor planning should account for a modest 17.4 inches of annual snowfall.
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.