Madison IL-Saint Clair IL-Monroe IL-Saint Charles MO- Saint Louis MO-Saint Louis City MO-Jefferson MO- Including the cities of Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis 439 AM CDT Fri Mar 29 2024 .TODAY...Mostly sunny. Not as cool with highs in the mid 70s. South winds 15 to 20 mph with gusts up to 30 mph. .TONIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Not as cool with lows in the mid 50s. South winds around 15 mph with gusts up to 30 mph. Chance of rain 30 percent. .SATURDAY...Partly sunny. Highs in the lower 70s. West winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 50s. West winds around 5 mph, becoming southeast after midnight. Chance of rain 40 percent. .SUNDAY...Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs around 80. South winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. Chance of rain 50 percent. .SUNDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the lower 60s. Chance of rain 50 percent. .MONDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 70s. Chance of rain 70 percent. .MONDAY NIGHT...Showers and thunderstorms likely, mainly in the evening. Cooler with lows in the upper 40s. Chance of rain 70 percent. .TUESDAY...Partly sunny with a 20 percent chance of showers. Much cooler. Near steady temperature in the lower 50s. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of showers. Cooler with lows in the upper 30s. .WEDNESDAY...Mostly sunny. Highs in the mid 50s. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the upper 30s. Highs in the mid 60s. $$