Crawford County Climate
Crawford County, Illinois
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
54.6°F
Annual Precip
46.4"
Annual Snowfall
10.7"
Extreme Heat Days
39
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
3,913
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Crawford County
Climate Verdict
Crawford County has a mild, with an average annual temperature of 54.6°F, moderately wet with 46.4 inches of annual precipitation, occasional hot days — 38.5 per year above 90°F, light snow averaging 10.7 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.6°F. summers are warm — July averages 76.5°F. The 47°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Crawford County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Crawford County closely matches the Illinois statewide average temperature of 52.8°F, it is somewhat wetter than average for Illinois.
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 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.