County Forecast for Monmouth , IL
Change Zip Code: 
 
190700-
Warren-
Including the city of Monmouth
612 PM CDT Thu Sep 18 2025

Tonight   Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers this evening, then a chance of showers after midnight. Lows in the lower 60s. Northeast winds around 5 mph, becoming northwest after midnight. Chance of rain 50 percent.
Friday   Mostly cloudy in the morning, then becoming partly sunny. A slight chance of thunderstorms. A chance of showers, mainly in the morning. Humid with highs in the lower 80s. South winds around 5 mph. Chance of rain 40 percent.
Friday night   Partly cloudy with a chance of showers. Lows in the lower 60s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 50 percent.
Saturday   Mostly sunny. Highs in the lower 80s. South winds around 5 mph.
Saturday night   Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the lower 60s. South winds around 5 mph. Chance of rain 40 percent.
Sunday   Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. Highs in the upper 70s. Chance of rain 50 percent.
Sunday night   Showers likely with a chance of thunderstorms. Lows in the lower 60s. Chance of rain 60 percent.
Monday   Partly sunny with a chance of showers. Highs around 80. Chance of rain 50 percent.
Monday night   Mostly cloudy with a chance of showers. Lows in the lower 60s. Chance of rain 30 percent.
Tuesday   Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of showers. Highs in the upper 70s.
Tuesday night and wednesday   Mostly cloudy. Lows in the upper 50s. Highs in the upper 70s.
Wednesday night and thursday   Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.
DTN Weather
Local Weather
Radar
County Forecast
State Forecast
DTN Weather Commentary
US Satellite
Current Surface Analysis
Wind Conditions
Today's Forecast Highs
Tonight's Forecast Lows
24 Hr Surface Forecast
Jet Stream Forecast
24 Hr Rainfall Estimate
24 Hr StormPath Accum
48 Hr StormPath Accum
6-10 Day Temp Forecast
6-10 Day Precip Forecast
Thunderstorm Outlook
US Drought Monitor
US Palmer Drought Index
US Crop Moisture Index
US Growing Degree Days
Soil Temperatures
Hurricane Tracking

DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Showers Shifting Slightly Eastward Friday
Posted at 12:00PM Thu Sep 18, 2025 CDT
Click here to get your local weather emailed to you each day.
Copyright DTN. All rights reserved. Disclaimer.
Powered By DTN