County Forecast for Effingham , IL
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161800-
Effingham-
Including the city of Effingham
506 AM CDT Wed Jul 16 2025

Today   Mostly sunny. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. Highs around 90. Southwest winds 5 to 10 mph. Chance of rain 40 percent. Heat index values up to 100.
Tonight   Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 40 percent.
Thursday   Partly sunny. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. Humid with highs in the upper 80s. Northwest winds 5 to 10 mph. Chance of rain 60 percent.
Thursday night   A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Humid with lows in the upper 60s. North winds around 5 mph. Chance of rain 50 percent.
Friday   Mostly cloudy with a chance of showers and thunderstorms. Humid with highs in the lower 80s. Northeast winds around 5 mph, becoming southeast in the afternoon. Chance of rain 50 percent.
Friday night   Mostly cloudy with a chance of thunderstorms. A chance of showers. Lows in the lower 70s. Chance of rain 50 percent.
Saturday   Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. Highs in the upper 80s. Chance of rain 70 percent.
Saturday night   Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 40 percent.
Sunday and sunday night   Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows in the lower 70s. Chance of rain 50 percent.
Monday   Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40 percent.
Monday night and tuesday   Mostly clear. Lows in the lower 70s. Highs in the lower 90s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Front Drifting Farther South Wednesday
Posted at 12:37PM Tue Jul 15, 2025 CDT
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