FPUS53 KLSX 170738 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 238 AM CDT Fri Apr 17 2026 ILZ100-101-MOZ061-063-064-171500- 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 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 15 to 20 mph. Chance of rain 40 percent. .TONIGHT...Thunderstorms likely. A chance of showers in the evening, then showers after midnight. Cooler with lows in the upper 40s. South winds 10 to 15 mph, becoming west after midnight. Chance of rain near 100 percent. .SATURDAY...Mostly cloudy with a chance of showers in the morning, then mostly sunny with a slight chance of showers in the afternoon. Much cooler. Less humid with highs in the upper 50s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent. .SATURDAY NIGHT...Mostly clear. Lows in the upper 30s. Northwest winds 10 to 15 mph with gusts up to 25 mph, becoming west around 5 mph after midnight. .SUNDAY...Sunny. Highs in the mid 60s. West winds 10 to 15 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the lower 40s. Highs in the lower 70s. .MONDAY NIGHT...Mostly clear. Lows in the lower 50s. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. Highs around 80. .THURSDAY...Mostly sunny with a slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. $$ MOZ042-049-050-171500- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the lower 80s. South winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 50 percent. .TONIGHT...Thunderstorms, showers. Locally heavy rainfall possible in the evening. Much cooler with lows in the lower 40s. Southwest winds 15 to 20 mph, becoming northwest 10 to 15 mph after midnight. Chance of rain near 100 percent. .SATURDAY...Sunny. A chance of showers in the morning. Much cooler with highs in the upper 50s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 30 percent. .SATURDAY NIGHT...Clear. Lows in the upper 30s. Northwest winds 10 to 15 mph with gusts up to 25 mph, becoming west around 5 mph after midnight. .SUNDAY...Sunny. Highs in the mid 60s. West winds 10 to 15 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the lower 40s. Highs in the lower 70s. .MONDAY NIGHT...Mostly clear. Lows in the lower 50s. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows in the mid 50s. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 20 percent. .THURSDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 40 percent. $$ MOZ041-047-048-171500- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. Thunderstorms likely with a chance of showers this afternoon. Highs in the lower 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 60 percent. .TONIGHT...Thunderstorms, showers. Locally heavy rainfall possible in the evening. Much cooler. Less humid with lows in the lower 40s. Southwest winds 10 to 15 mph, becoming northwest after midnight. Gusts up to 30 mph. Chance of rain near 100 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Much cooler with highs in the upper 50s. Northwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Clear. Lows in the upper 30s. West winds 5 to 10 mph. Gusts up to 25 mph in the evening. .SUNDAY...Sunny. Not as cool with highs in the upper 60s. West winds 5 to 10 mph with gusts up to 20 mph. .SUNDAY NIGHT...Mostly clear. Lows in the lower 40s. .MONDAY...Sunny. Highs in the mid 70s. .MONDAY NIGHT...Mostly clear. Lows in the lower 50s. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT...Mostly clear. Lows in the mid 50s. .WEDNESDAY...Mostly sunny. Highs around 80. .WEDNESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 20 percent. .THURSDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. $$ ILZ095>097-MOZ018-019-026-027-034>036-171500- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. Thunderstorms likely with a chance of showers this afternoon. Highs in the mid 80s. South winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 70 percent. .TONIGHT...Thunderstorms, showers. Much cooler. Less humid with lows in the lower 40s. Southwest winds 15 to 20 mph, becoming northwest 10 to 15 mph after midnight. Chance of rain near 100 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Much cooler with highs in the mid 50s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly clear. Lows in the upper 30s. West winds 10 to 15 mph with gusts up to 25 mph, diminishing to around 5 mph after midnight. .SUNDAY...Sunny. Highs in the lower 60s. West winds 10 to 15 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows around 40. Highs in the upper 60s. .MONDAY NIGHT...Clear in the evening, then becoming partly cloudy. Not as cool with lows in the lower 50s. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows in the mid 50s. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the upper 50s. Chance of rain 20 percent. .THURSDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 40 percent. $$ ILZ069-070-074-171500- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 15 to 20 mph. Chance of rain 30 percent. .TONIGHT...A slight chance of showers and thunderstorms in the evening, then showers with a chance of thunderstorms after midnight. Lows in the lower 50s. South winds around 15 mph, becoming southwest after midnight. Chance of rain near 100 percent. .SATURDAY...Showers likely with a chance of thunderstorms in the morning, then partly sunny with a chance of showers in the afternoon. Much cooler. Less humid with highs in the lower 60s. Northwest winds 15 to 20 mph. Chance of rain 70 percent. .SATURDAY NIGHT...Mostly clear. Cooler with lows in the upper 30s. Northwest winds 10 to 15 mph, becoming west around 5 mph after midnight. .SUNDAY...Sunny. Highs in the mid 60s. West winds 10 to 15 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the lower 40s. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Lows around 50. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT...Mostly clear. Lows in the mid 50s. .WEDNESDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. .THURSDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 20 percent. $$ MOZ074-084-085-099-171500- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 40 percent. .TONIGHT...Partly cloudy in the evening, then mostly cloudy with showers with a chance of thunderstorms after midnight. Cooler with lows in the upper 40s. South winds 10 to 15 mph, becoming west 5 to 10 mph after midnight. Gusts up to 30 mph. Chance of rain 90 percent. .SATURDAY...Mostly cloudy with showers likely with a chance of thunderstorms in the morning, then partly sunny with a chance of showers in the afternoon. Much cooler with highs in the lower 60s. Northwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 70 percent. .SATURDAY NIGHT...Mostly clear. Cooler with lows in the upper 30s. Northwest winds 5 to 10 mph. Gusts up to 25 mph in the evening. .SUNDAY...Sunny. Highs in the upper 60s. West winds 5 to 10 mph with gusts up to 20 mph. .SUNDAY NIGHT AND MONDAY...Clear. Lows in the lower 40s. Highs in the mid 70s. .MONDAY NIGHT...Mostly clear. Lows in the upper 40s. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. Highs around 80. .THURSDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. $$ MOZ051-052-060-171500- Montgomery MO-Lincoln MO-Warren MO- 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent. .TONIGHT...Showers and thunderstorms. Much cooler with lows in the mid 40s. Southwest winds 10 to 15 mph, becoming northwest after midnight. Gusts up to 30 mph. Chance of rain near 100 percent. .SATURDAY...Mostly sunny. A chance of showers in the morning. Much cooler with highs in the upper 50s. Northwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 40 percent. .SATURDAY NIGHT...Clear. Lows in the upper 30s. Northwest winds 10 to 15 mph with gusts up to 25 mph, becoming west around 5 mph after midnight. .SUNDAY...Sunny. Highs in the mid 60s. West winds 5 to 10 mph with gusts up to 20 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the lower 40s. Highs in the lower 70s. .MONDAY NIGHT...Mostly clear. Not as cool with lows in the lower 50s. .TUESDAY...Mostly sunny. Highs in the mid 70s. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows in the mid 50s. Highs around 80. .WEDNESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the upper 50s. Chance of rain 20 percent. .THURSDAY...Mostly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 40 percent. $$ ILZ058-059-098-099-171500- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 40 percent. .TONIGHT...Showers and thunderstorms. Cooler with lows in the mid 40s. South winds 15 to 20 mph, becoming west 10 to 15 mph after midnight. Chance of rain near 100 percent. .SATURDAY...Partly sunny with a chance of showers in the morning, then sunny with a slight chance of showers in the afternoon. Much cooler with highs in the mid 50s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent. .SATURDAY NIGHT...Mostly clear. Lows in the upper 30s. Northwest winds 10 to 15 mph with gusts up to 25 mph, becoming west around 5 mph after midnight. .SUNDAY...Sunny. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the upper 30s. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear. Not as cool with lows around 50. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. Highs in the upper 70s. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. $$ ILZ060-064-065-171500- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the lower 80s. South winds 15 to 20 mph. Chance of rain 30 percent. .TONIGHT...A chance of showers and thunderstorms in the evening, then showers and thunderstorms after midnight. Lows in the upper 40s. South winds 15 to 20 mph, becoming west 10 to 15 mph after midnight. Chance of rain near 100 percent. .SATURDAY...Mostly cloudy with showers likely with a chance of thunderstorms in the morning, then mostly sunny with a slight chance of showers in the afternoon. Much cooler. Less humid with highs in the upper 50s. Northwest winds 15 to 20 mph. Chance of rain 70 percent. .SATURDAY NIGHT...Mostly clear. Cooler with lows in the upper 30s. Northwest winds 10 to 15 mph. .SUNDAY...Sunny. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the upper 30s. Highs in the mid 60s. .MONDAY NIGHT...Clear in the evening, then becoming partly cloudy. Not as cool with lows in the upper 40s. .TUESDAY...Mostly sunny. Not as cool with highs in the mid 70s. .TUESDAY NIGHT...Mostly clear. Lows in the mid 50s. .WEDNESDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. .THURSDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 20 percent. $$ ILZ079-MOZ075-171500- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then showers with a chance of thunderstorms after midnight. Cooler with lows in the upper 40s. South winds 10 to 15 mph, becoming southwest after midnight. Gusts up to 30 mph. Chance of rain 90 percent. .SATURDAY...Showers with a chance of thunderstorms in the morning, then partly sunny with a chance of showers in the afternoon. Much cooler. Less humid with highs in the lower 60s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent. .SATURDAY NIGHT...Mostly clear. Cooler with lows in the upper 30s. Northwest winds 10 to 15 mph. .SUNDAY...Sunny. Highs in the upper 60s. West winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows in the lower 40s. .MONDAY...Sunny. Highs in the lower 70s. .MONDAY NIGHT...Mostly clear. Lows around 50. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s. Highs around 80. .THURSDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. $$ MOZ059-062-072-073-171500- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent. .TONIGHT...A chance of showers and thunderstorms in the evening, then showers with thunderstorms likely after midnight. Locally heavy rainfall possible in the evening. Cooler with lows in the mid 40s. Southwest winds 10 to 15 mph, becoming west 5 to 10 mph after midnight. Chance of rain near 100 percent. .SATURDAY...Mostly cloudy with a chance of showers in the morning, then sunny with a slight chance of showers in the afternoon. Much cooler with highs in the upper 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. .SATURDAY NIGHT...Clear. Lows in the upper 30s. Northwest winds 5 to 10 mph with gusts up to 20 mph, becoming west after midnight. .SUNDAY...Sunny. Highs in the upper 60s. West winds 5 to 10 mph with gusts up to 20 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the lower 40s. Highs in the mid 70s. .MONDAY NIGHT...Mostly clear. Lows in the lower 50s. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT...Mostly clear. Lows in the mid 50s. .WEDNESDAY...Mostly sunny. Highs around 80. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. .THURSDAY...Mostly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 40 percent. $$ ILZ102-MOZ065-171500- Monroe IL-Jefferson MO- 238 AM CDT Fri Apr 17 2026 .TODAY...Mostly sunny. A chance of showers and thunderstorms this afternoon. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent. .TONIGHT...A chance of showers and thunderstorms in the evening, then showers with thunderstorms likely after midnight. Cooler with lows in the upper 40s. South winds 10 to 15 mph, becoming west 5 to 10 mph after midnight. Chance of rain near 100 percent. .SATURDAY...Mostly cloudy with showers likely with a slight chance of thunderstorms in the morning, then mostly sunny with a slight chance of showers in the afternoon. Much cooler. Less humid with highs around 60. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent. .SATURDAY NIGHT...Clear. Lows in the upper 30s. Northwest winds 5 to 10 mph. .SUNDAY...Sunny. Highs in the upper 60s. West winds 5 to 10 mph. .SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the lower 40s. Highs in the mid 70s. .MONDAY NIGHT...Mostly clear. Lows in the lower 50s. .TUESDAY...Mostly sunny. Highs in the upper 70s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. Highs in the lower 80s. .THURSDAY...Mostly sunny with a slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. $$