Knox County Climate
Knox County, Ohio
Avg Annual Temp
49.2°F
Annual Precip
42.8"
Annual Snowfall
33.0"
Extreme Heat Days
8.033333333333333
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Knox County Weather
A Cooler Pocket of the Midwest
Knox County is one of the cooler areas in the region, averaging just 49.2°F annually. This puts it well below the national median and results in longer, more intense winters.
One of Ohio's Coldest Counties
Knox County’s 49.2°F average is significantly colder than the Ohio state average of 51.5°F. It also records 33 inches of snow, making it one of the snowiest spots in the state's central interior.
More Snow Than Any Neighbor
With 33 inches of annual snow, Knox far exceeds the 20.1 inches found in Holmes County. It also sees only 8 extreme heat days, fewer than any other county in this group.
Mild Summers and Harsh Winters
Knox County enjoys mild summers with a 69.4°F average and very few 90°F days. However, winters are tough, featuring a 27.8°F average and nearly three feet of total snowfall.
Invest in High-Quality Winter Gear
A reliable snowblower and heavy winter insulation are mandatory for the 33 inches of annual snow. The mild summer climate means air conditioning is used less frequently than in southern Ohio.
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.