Edwards County Climate
Edwards County, Illinois
Avg Annual Temp
56.4°F
Annual Precip
50.0"
Annual Snowfall
11.8"
Extreme Heat Days
44.8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Edwards County Weather
Warmer and Much Wetter than Average
Edwards County averages 56.4°F annually, which is warmer than the national median. It receives a significant 50.0 inches of precipitation, making it one of the wettest spots in the region.
One of the State's Warmest Spots
The county's 56.4°F average temperature far exceeds the Illinois state average of 52.8°F. It also receives about 8 more inches of precipitation than the state norm of 41.7 inches.
Southern Illinois Heat and Moisture
Edwards County aligns with the southern Illinois climate, which is notably warmer and wetter than the central plains. It sees less than half the snow of northern counties like DuPage.
Intense Summers and Mild Winters
Summer is grueling with 45 days of extreme heat over 90°F and an average temperature of 76.8°F. Winter is mild by Illinois standards, with only 11.8 inches of annual snow.
Prioritize Cooling and Flood Safety
High-performance air conditioning is vital for the 45 days of extreme heat. Residents must also prepare for heavy rain, as 50.0 inches of annual precipitation can lead to local flooding.
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.