Weather WorldPrairie Lake, IL 7-Day Night Weather Forecast
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Prairie Lake, IL Weather Forecast
Prairie Lake, IL Weather Forecast Date: 853 PM CDT Tue Aug 18 2026
The area/counties/county of: Madison County Il, including the cities of: Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis.or toggle through each period.
Tonight... Partly cloudy. Showers and thunderstorms likely after midnight. Lows around 70. South winds around 5 mph. Chance of rain 70%.
Wednesday... Mostly cloudy. Showers and thunderstorms, mainly in the morning. Highs around 80. South winds 5 to 10 mph, becoming southeast in the afternoon. Chance of rain 90%.
Wednesday Night... Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of rain 20%.
Thursday... Mostly sunny. Highs in the lower 80s. Northeast winds around 5 mph.
Thursday Night... Mostly clear. Lows in the mid 60s. Northeast winds around 5 mph in the evening, becoming light and variable.
Friday... Sunny. Highs in the mid 80s.
Friday Night... Mostly clear. A slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 20%.
Saturday... Mostly clear. A slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 20%.
Saturday Night... Mostly clear. Lows in the mid 60s.
Sunday... Mostly sunny. Highs in the lower 80s.
Sunday Night... Mostly cloudy in the evening, then partly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 30%.
Monday... Partly cloudy. A slight chance of showers and thunderstorms. Highs in the mid 80s. Lows in the upper 60s. Chance of rain 20%.
Monday Night... Partly cloudy. A slight chance of showers and thunderstorms. Highs in the mid 80s. Lows in the upper 60s. Chance of rain 20%.
POP = Probability of Precipitation
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