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Joyces Lake, IL Weather Forecast
Joyces Lake, IL Weather Forecast Date: 128 PM CDT Tue Sep 29 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.
This Afternoon... Mostly sunny. Highs in the mid 80s. South winds 5 to 10 mph.
Tonight... Mostly cloudy. Not as cool with lows in the upper 60s. Southeast winds around 5 mph.
Wednesday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 80s. South winds 5 to 10 mph with gusts up to 20 mph.
Wednesday Night... Mostly cloudy. Lows in the lower 70s. South winds 5 to 10 mph with gusts up to 20 mph.
Thursday... Mostly cloudy. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 80s. South winds 10 to 15 mph. Chance of rain 50%.
Thursday Night... Cloudy with a slight chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Lows in the upper 60s. Chance of rain 90%.
Friday... Showers likely with a slight chance of thunderstorms in the morning, then a chance of showers in the afternoon. Much cooler with highs in the lower 70s. Chance of rain 70%.
Friday Night... Mostly cloudy with a 20% chance of showers. Lows in the mid 50s. Highs in the upper 60s.
Saturday... Mostly cloudy with a 20% chance of showers. Lows in the mid 50s. Highs in the upper 60s.
Sunday... Mostly clear. Highs around 70. Lows in the lower 50s.
POP = Probability of Precipitation
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