Expires:202605091500;;260312 FPUS53 KLSX 090723 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 223 AM CDT Sat May 9 2026 MOZ075-091500- Sainte Genevieve MO- 223 AM CDT Sat May 9 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING... .REST OF TONIGHT...Mostly cloudy. Patchy dense fog. Near steady temperature in the mid 50s. South winds around 5 mph. .SATURDAY...Patchy dense fog in the morning. Sunny. Highs in the lower 80s. West winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear in the evening, then becoming mostly cloudy. Lows in the mid 50s. Southwest winds around 5 mph, becoming west after midnight. .SUNDAY...Partly sunny in the morning, then becoming mostly cloudy. Cooler with highs in the upper 60s. North winds 5 to 10 mph. .SUNDAY NIGHT...Mostly cloudy in the evening, then clearing. Cooler with lows in the mid 40s. North winds 5 to 10 mph. .MONDAY AND MONDAY NIGHT...Clear. Highs in the lower 70s. Lows in the upper 40s. .TUESDAY...Sunny. Highs in the upper 70s. .TUESDAY NIGHT...Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Not as cool with lows in the upper 50s. Chance of rain 20 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Clear. Highs in the upper 70s. Lows around 50. .THURSDAY...Sunny. Highs in the upper 70s. .THURSDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the upper 50s. Chance of rain 20 percent. .FRIDAY...Mostly sunny. Highs in the mid 80s. $$