County Forecast for Monticello , IL
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150700-
Piatt-
Including the city of Monticello
537 PM CST Fri Nov 14 2025

Tonight   Mostly clear this evening, then becoming mostly cloudy. Not as cool with lows in the upper 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph.
Saturday   Mostly cloudy in the morning, then becoming mostly sunny. Highs in the lower 70s. Southwest winds 15 to 20 mph, becoming west in the afternoon.
Saturday night   Mostly clear. Much cooler with lows in the upper 30s. Northwest winds 10 to 15 mph.
Sunday   Sunny. Much cooler with highs in the mid 50s. Northwest winds 5 to 10 mph.
Sunday night   Partly cloudy in the evening, then becoming mostly clear. Lows around 30. Northwest winds around 5 mph.
Monday   Mostly sunny. Highs in the mid 50s.
Monday night   Rain likely. Lows in the upper 30s. Chance of rain 70 percent.
Tuesday   Mostly cloudy with a chance of rain in the morning, then partly sunny in the afternoon. Highs in the lower 50s. Chance of rain 30 percent.
Tuesday night and wednesday   Mostly cloudy. Lows in the mid 30s. Highs in the mid 50s.
Wednesday night   Mostly cloudy with a 40 percent chance of rain. Lows in the upper 30s.
Thursday   Rain likely. Highs in the upper 50s. Chance of rain 60 percent.
Thursday night   Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s.
Friday   Partly sunny with a 40 percent chance of rain. Highs in the mid 50s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Two Systems Moving Through This Weekend
Posted at 12:03PM Fri Nov 14, 2025 CST
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