Boone County Climate
Boone County, Illinois
Climate data coming soon
Avg Annual Temp
—
Annual Precip
39.1"
Annual Snowfall
32.6"
Extreme Heat Days
—
Monthly Temperature
Temperature data coming soon
Precipitation Calendar
Seasonal Overview
Seasonal data coming soon
National Comparison
Data pending
Data pending
Climate Profile
About Boone County Weather
A Snowy Northern Interior Climate
Boone County experiences a cool continental climate with 39.1 inches of annual precipitation. This precipitation level is slightly lower than the national median, though its winter profile is much more aggressive.
Colder and Snowier than Average
While temperature data is limited, Boone is known for its northern latitude which stays well below the 52.8°F state average. It receives 32.6 inches of snow annually, nearly double the state's more central regions.
Heavy Snow Compared to Neighbors
Boone's 32.6 inches of snow is significantly higher than the 13.5 inches seen in Brown County. It shares a similar high-snowfall profile with other counties along the Wisconsin border.
Winter Dominates the Calendar
Winter is the most distinctive season in Boone, delivering 32.6 inches of snow. Although specific summer temperature records are unavailable, the county generally sees shorter, milder summers than southern Illinois.
Equip for Major Snowfall
High-quality snow removal equipment is a necessity for the 32.6 inches of annual accumulation. Focus on home insulation and winter-grade vehicle maintenance to survive the long northern Illinois cold.
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.