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City of Monmouth, ILMonmouth, IL 7-Day Night Weather Forecast
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Monmouth, IL Weather Forecast
Monmouth, IL Weather Forecast Date: 126 AM CDT Tue Sep 29 2026
The area/counties/county of: Warren, including the city of Monmouth.or toggle through each period.
Rest of Tonight... Mostly clear. Near steady temperature in the mid 50s. Southeast winds around 5 mph.
Tuesday... Mostly sunny. Highs in the upper 70s. South winds 5 to 10 mph.
Tuesday Night... Mostly cloudy. A chance of showers after midnight. Not as cool with lows in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 40%.
Wednesday... Showers likely, mainly in the morning. Highs in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70%.
Wednesday Night... Mostly cloudy with a chance of showers. Humid with lows in the mid 60s. South winds around 5 mph. Chance of rain 50%.
Thursday... Showers. Highs in the mid 70s. Lows in the upper 50s. Chance of rain 90%.
Thursday Night... Showers. Highs in the mid 70s. Lows in the upper 50s. Chance of rain 90%.
Friday... Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs in the mid 60s. Chance of rain 50%.
Friday Night... Partly cloudy. Lows in the lower 50s. Highs in the mid 60s.
Saturday... Partly cloudy. Lows in the lower 50s. Highs in the mid 60s.
Saturday Night... Mostly cloudy. Lows in the lower 50s.
Sunday... Mostly clear. Highs in the mid 60s. Lows in the upper 40s.
POP = Probability of Precipitation
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