Edgar County Climate
Edgar County, Illinois
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.4°F
Annual Precip
42.7"
Annual Snowfall
19.1"
Extreme Heat Days
19
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,354
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Edgar County
Climate Verdict
Edgar County has a mild, with an average annual temperature of 51.4°F, moderately wet with 42.7 inches of annual precipitation, rare extreme heat with only 19.3 days above 90°F annually, light snow averaging 19.1 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 25.3°F. summers are warm — July averages 74.1°F. The 49°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Edgar County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Edgar County closely matches the Illinois statewide average temperature of 52.8°F.
Climate Profile
About Edgar County Weather
Temperate Climate with Consistent Rain
Edgar County maintains an average temperature of 51.4°F and receives 42.7 inches of precipitation. This creates a standard temperate climate profile common in the American Midwest.
Typical Temperatures and High Rainfall
The average temperature of 51.4°F is slightly cooler than the state average of 52.8°F. However, its 42.7 inches of rain makes it wetter than the typical Illinois county.
The Eastern Illinois Border Climate
Edgar County shares weather patterns with its Indiana neighbors to the east. It experiences more rainfall than western Illinois counties, supporting its robust agriculture.
Steady Warmth and Moderate Snow
The county sees 19 days of extreme heat over 90°F during the 72.5°F average summer. Winter brings 19.1 inches of snow, providing a consistent but manageable seasonal cover.
Balanced Prep for Rain and Heat
With 42.7 inches of annual precipitation, effective drainage is a priority for property owners. HVAC systems should be ready for the 19 days of heat and the 25.3°F January lows.
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.