Expires:202601090500;;019493 FPUS53 KLSX 082119 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 318 PM CST Thu Jan 8 2026 ILZ069-070-074-090500- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 318 PM CST Thu Jan 8 2026 .TONIGHT...Mostly cloudy with showers with a chance of thunderstorms this evening, then partly cloudy with a slight chance of showers after midnight. Breezy with lows in the upper 40s. Southwest winds 15 to 25 mph with gusts up to 40 mph. Chance of rain 90 percent. .FRIDAY...Partly sunny in the morning, then becoming mostly cloudy. Cooler. Less humid with highs in the mid 50s. West winds 10 to 15 mph with gusts up to 30 mph, becoming north 5 to 10 mph in the afternoon. .FRIDAY NIGHT...Mostly cloudy. A slight chance of rain after midnight. Lows around 40. North winds around 5 mph. Chance of rain 20 percent. .SATURDAY...Mostly cloudy with a slight chance of rain in the morning, then mostly sunny in the afternoon. Cooler with highs in the mid 40s. Northwest winds 10 to 15 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Much cooler with lows in the mid 20s. West winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY AND SUNDAY NIGHT...Mostly clear. Highs in the mid 30s. Lows in the mid 20s. .MONDAY...Sunny. Not as cool with highs in the upper 40s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the mid 30s. .TUESDAY...Partly sunny. Highs in the lower 50s. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy with a 20 percent chance of rain. Lows in the mid 30s. Highs in the lower 40s. .WEDNESDAY NIGHT...Mostly cloudy. Cooler with lows in the mid 20s. .THURSDAY...Mostly sunny. Highs in the mid 30s. $$