County Forecast for Monmouth , IL
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202100-
Warren-
Including the city of Monmouth
701 AM CST Sat Dec 20 2025

Today   Partly sunny. Not as cool with highs in the lower 40s. Temperature falling into the upper 30s this afternoon. Southwest winds 10 to 15 mph, becoming northwest this afternoon.
Tonight   Mostly clear. Lows in the lower 20s. Northwest winds 5 to 10 mph with gusts up to 20 mph.
Sunday   Sunny. Highs in the mid 30s. North winds around 5 mph, becoming south in the afternoon.
Sunday night   Partly cloudy in the evening, then becoming mostly cloudy. Near steady temperature in the upper 20s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
Monday   Mostly cloudy. Highs in the mid 40s. South winds 10 to 15 mph with gusts up to 25 mph.
Monday night   Mostly cloudy in the evening, then becoming partly cloudy. Not as cool. Near steady temperature in the upper 30s.
Tuesday   Mostly sunny. Highs around 50.
Tuesday night   Mostly cloudy. Lows in the mid 30s.
Wednesday   Cloudy. Highs in the upper 50s.
Wednesday night and christmas day   Mostly cloudy. Lows in the upper 40s. Highs in the lower 60s.
Thursday night   Mostly clear. Lows in the lower 40s.
Friday   Mostly sunny. Highs in the mid 50s.
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Bryce Anderson – DTN Meteorologist
System Moves Across North This Weekend; Warm Air Floods US Next Week

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Posted at 12:14PM Fri Dec 19, 2025 CST
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