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Morrison Lake, IL Weather Forecast
Morrison Lake, IL Weather Forecast Date: 521 PM CDT Fri Sep 11 2026
The area/counties/county of: Mercer, including the city of Aledo.or toggle through each period.
Tonight... Mostly clear this evening, then becoming partly cloudy. Lows in the mid 60s. South winds around 5 mph.
Saturday... Mostly sunny. Humid with highs in the mid 80s. Southwest winds 5 to 10 mph, becoming northwest in the afternoon.
Saturday Night... Partly cloudy. Lows in the lower 60s. North winds 5 to 10 mph.
Sunday... Partly sunny. Showers likely in the afternoon. Highs in the upper 70s. Northeast winds 5 to 10 mph. Chance of rain 60%.
Sunday Night... Mostly cloudy with a chance of showers. Lows in the upper 50s. Northeast winds 5 to 10 mph. Chance of rain 50%.
Monday... Partly sunny. A chance of showers in the morning. Highs in the lower 80s. Chance of rain 50%.
Monday Night... Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Warmer with lows in the upper 60s. Chance of rain 50%.
Tuesday... Partly sunny. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 70%.
Tuesday Night... A chance of thunderstorms. Showers. Lows in the lower 60s. Chance of rain 90%.
Wednesday... Showers likely. Highs in the mid 70s. Lows in the lower 60s. Chance of rain 70%.
Wednesday Night... Showers likely. Highs in the mid 70s. Lows in the lower 60s. Chance of rain 70%.
Thursday... Partly sunny. A chance of showers in the morning. Highs in the upper 70s. Chance of rain 40%.
Thursday Night... Mostly clear with a chance of showers in the evening, then partly cloudy with a chance of showers after midnight. Lows in the upper 50s. Chance of rain 30%.
POP = Probability of Precipitation
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