Crawford County Climate
Crawford County, Illinois
Avg Annual Temp
54.6°F
Annual Precip
46.4"
Annual Snowfall
10.7"
Extreme Heat Days
38.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Crawford County Weather
A wet climate slightly above national medians
Crawford County averages 54.6°F annually, placing it slightly above the national median for temperature. It is a particularly wet county, receiving 46.4 inches of precipitation each year.
Warmer and wetter than the state average
The county is warmer and wetter than the Illinois averages of 52.8°F and 41.7 inches. Its climate is more similar to the Ohio River Valley than the northern Illinois plains.
Intense summer heat matching Clay County
Crawford sees 39 extreme heat days, nearly matching the 40 days found in Clay County. It is much warmer and wetter than Coles County, which sits just to the northwest.
Persistent summer heat and mild winters
Summer brings frequent heat, with 39 days reaching 90°F and a July average of 76.5°F. Winters are mild for the state, averaging 32.6°F with just 10.7 inches of annual snowfall.
Prioritize humidity control and rain prep
Residents should prepare for significant humidity and rain by maintaining clear drainage and high-capacity gutters. With 39 days of extreme heat, a reliable HVAC system is the most important home investment.
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.