Guernsey County Climate
Guernsey County, Ohio
Avg Annual Temp
52.7°F
Annual Precip
41.3"
Annual Snowfall
17.4"
Extreme Heat Days
17.6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.