Effingham County Climate
Effingham County, Illinois
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
56.0°F
Annual Precip
43.8"
Annual Snowfall
16.2"
Extreme Heat Days
—
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Effingham County
Climate Verdict
Climate data for Effingham County is currently being compiled from NOAA sources. Check back soon for detailed weather normals.
Seasonal Breakdown
Seasonal weather data for this county is based on regional climate patterns. Residents experience typical weather variations for their location, with conditions reflecting broader state and regional trends. Consult the NOAA Climate Data Online for detailed seasonal breakdowns as more granular station data becomes available.
Outdoor & Gardening Guidance
Growing season and gardening guidance for Effingham County will be added as data becomes available.
Regional Context
Comparative climate data for Effingham County is being processed.
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
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Track your own weather in Effingham County
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Data sources: ERA5 Reanalysis (modeled) via Open-Meteo (gap-filled where station data unavailable).. 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.