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Morrison Lake, IL 7-Day Night Weather Forecast
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Morrison Lake, IL Weather Forecast
Morrison Lake, IL Weather Forecast Date: 611 PM CDT Fri Sep 18 2026
The area/counties/county of: Mercer, including the city of Aledo.or toggle through each period.
Tonight... Partly cloudy this evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the upper 60s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50%.
Saturday... Mostly cloudy with a chance of showers and thunderstorms. Humid with highs in the mid 80s. South winds 5 to 10 mph. Chance of rain 50%.
Saturday Night... Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Humid with lows in the mid 60s. North winds around 5 mph. Chance of rain 80%.
Sunday... Showers likely. A chance of thunderstorms in the afternoon. Not as warm and humid. Near steady temperature in the upper 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70%.
Sunday Night... Showers likely. Lows in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70%.
Monday... Showers likely. Highs in the mid 60s. Chance of rain 70%.
Monday Night... Mostly cloudy with a 50% chance of showers. Lows in the lower 50s.
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 60s.
Tuesday Night... Partly cloudy. Lows in the lower 50s. Highs in the upper 60s.
Wednesday... Partly cloudy. Lows in the lower 50s. Highs in the upper 60s.
Thursday... Partly sunny. Highs around 70.
Thursday Night... Partly cloudy. Lows in the mid 50s. Highs in the lower 70s.
POP = Probability of Precipitation
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