Effingham County Climate
Effingham County, Illinois
Climate data coming soon
Avg Annual Temp
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Annual Precip
43.8"
Annual Snowfall
16.2"
Extreme Heat Days
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Monthly Temperature
Temperature data coming soon
Precipitation Calendar
Seasonal Overview
Seasonal data coming soon
National Comparison
Data pending
Data pending
Climate Profile
About Effingham County Weather
Higher Precipitation than the National Median
Effingham County receives 43.8 inches of precipitation annually, which is high compared to the national average. While local temperature records are limited, the county is a key transition zone in the Midwest.
Wetter than the Illinois State Average
At 43.8 inches of rainfall, Effingham exceeds the Illinois state average of 41.7 inches. It is consistently wetter than its neighbors to the north and west.
Climate Transition in Central Illinois
Effingham acts as a gateway where northern snow begins to taper off. Its 16.2 inches of annual snowfall is significantly lower than what is seen in the Chicago area.
Damp Seasons with Moderate Snow
The county manages 16.2 inches of snow across the winter months. With 43.8 inches of total precipitation, the year is characterized more by rainfall than by heavy winter accumulation.
Manage Moisture and Road Safety
Homeowners should focus on moisture control and sump pump reliability given the 43.8 inches of annual rain. Drivers should still prepare for winter, as 16.2 inches of snow can create slick conditions.
Frequently Asked Questions
How much rain does Effingham County get?
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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.