Fri Feb 21 06:09:35 PM EST 2025 Madison IL-Saint Clair IL-Saint Charles MO-Saint Louis MO- Saint Louis City MO- Including the cities of Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis 508 PM CST Fri Feb 21 2025 .TONIGHT...Mostly clear this evening, then becoming mostly cloudy. Not as cool with lows around 15. South winds around 5 mph. .SATURDAY...Sunny. Not as cool with highs in the upper 30s. Southwest winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the mid 20s. Southwest winds around 5 mph. .SUNDAY...Sunny. Not as cool with highs in the lower 50s. Southwest winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the mid 30s. Southwest winds 5 to 10 mph. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs around 60. Lows in the lower 40s. .TUESDAY...Sunny. Highs around 60. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 30s. .WEDNESDAY...Partly sunny with a 40 percent chance of rain. Highs in the upper 50s. .WEDNESDAY NIGHT...Mostly cloudy. A chance of rain, mainly in the evening. Lows in the upper 30s. Chance of rain 30 percent. .THURSDAY...Partly sunny. Cooler with highs in the upper 40s. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the lower 30s. Highs in the mid 50s.