County Forecast for Monticello , IL
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120900-
Piatt-
Including the city of Monticello
836 PM CDT Fri Jul 11 2025

Rest of tonight   Partly cloudy early this evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms early this evening, then a chance of showers and thunderstorms. Lows in the lower 70s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.
Saturday   Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Humid with highs in the mid 80s. Southwest winds 10 to 15 mph. Chance of rain 50 percent.
Saturday night   Partly cloudy. Lows in the upper 60s. Northwest winds 5 to 10 mph.
Sunday   Mostly sunny. Highs in the mid 80s. Northwest winds around 5 mph.
Sunday night   Partly cloudy in the evening, then clearing. Lows in the mid 60s. Southwest winds around 5 mph.
Monday   Sunny. Highs in the upper 80s.
Monday night   Mostly cloudy. Lows around 70.
Tuesday and tuesday night   Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows in the lower 70s. Chance of rain 40 percent.
Wednesday   Partly sunny with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of rain 60 percent.
Wednesday night through thursday night   Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 50 percent.
Friday   Partly sunny. Highs in the mid 80s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
System Sweeping Through Country This Weekend
Posted at 12:08PM Fri Jul 11, 2025 CDT
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