Expires:202410171100;;410580 FPUS53 KLSX 170339 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 1039 PM CDT Wed Oct 16 2024 MOZ061-171100- Saint Charles MO- Including the city of Saint Charles 1039 PM CDT Wed Oct 16 2024 .REST OF TONIGHT...Clear. Widespread frost. Lows around 30. Southwest winds around 5 mph. .THURSDAY...Widespread frost with areas of fog in the morning. Sunny. Highs in the upper 60s. South winds 5 to 10 mph. .THURSDAY NIGHT...Clear. Lows in the upper 30s. South winds 5 to 10 mph. .FRIDAY...Sunny. Highs around 70. South winds 5 to 10 mph. .FRIDAY NIGHT...Clear. Lows in the lower 40s. Southeast winds around 5 mph. .SATURDAY THROUGH SUNDAY...Clear. Highs in the mid 70s. Lows in the lower 40s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s. .MONDAY...Mostly sunny. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 50s. Chance of rain 40 percent. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT...Mostly clear. Lows in the lower 50s. .WEDNESDAY...Sunny. A slight chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 20 percent. $$