County Forecast for Newton , IL
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202000-
Jasper-
Including the city of Newton
737 AM CDT Thu Aug 20 2026

Rest of today   Mostly sunny. Patchy fog this morning. A slight chance of showers and thunderstorms this afternoon. Highs in the lower 80s. Northeast winds around 5 mph. Chance of rain 20 percent.
Tonight   Mostly clear. Lows in the lower 60s. Northeast winds around 5 mph.
Friday   Sunny. Highs in the mid 80s. Northeast winds around 5 mph, becoming northwest around 5 mph in the afternoon.
Friday night   Mostly clear in the evening, then partly cloudy with a chance of showers after midnight. Lows in the mid 60s. Light and variable winds, becoming southwest around 5 mph after midnight. Chance of rain 40 percent.
Saturday   Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph.
Saturday night and sunday   Mostly clear. Lows in the lower 60s. Highs in the lower 80s.
Sunday night through wednesday   Partly cloudy. Lows in the lower 60s. Highs in the mid 80s.
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Bryce Anderson – DTN Meteorologist
Storms Continue in Tennessee Valley, New System for Northern Corn Belt Thursday

Showers, thunderstorms for southern Corn Belt. Thunderstorms from Nebraska to Minnesota later Thursday. » More DTN Weather Commentary

Posted at 5:41AM Thu Aug 20, 2026 CDT
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