Expires:202406170700;;141294 FPUS53 KLSX 162309 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 609 PM CDT Sun Jun 16 2024 ILZ100>102-MOZ061-063>065-170700- 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 609 PM CDT Sun Jun 16 2024 .TONIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. .MONDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. Heat index values up to 101. .MONDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. .TUESDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph, diminishing to around 5 mph after midnight. .JUNETEENTH THROUGH THURSDAY NIGHT...Partly cloudy. Highs in the mid 90s. Lows in the lower 70s. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 100. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 100. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 40 percent. Heat index values up to 100. $$