Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
409 FPUS53 KLSX 082028 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 328 PM CDT Tue Sep 8 2026 ILZ100-101-MOZ061-063-064-090400- 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 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows in the mid 70s. South winds 5 to 10 mph. .WEDNESDAY...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. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west in the afternoon. Chance of rain 40 percent. Heat index values up to 103. .WEDNESDAY NIGHT...Showers and thunderstorms. Humid with lows around 70. West winds around 5 mph. Chance of rain 80 percent. .THURSDAY...Showers and thunderstorms, mainly in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 60s. North winds around 5 mph in the evening, becoming light and variable. .FRIDAY...Mostly sunny. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear. Lows in the upper 60s. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 100 in the afternoon. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 40 percent. .SUNDAY NIGHT AND MONDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 60s. Highs around 90. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 40 percent. .TUESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent. $$ MOZ042-049-050-090400- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 25 mph, becoming northwest in the afternoon. Chance of rain 50 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Thunderstorms, showers with lows in the upper 60s. Northeast winds around 5 mph, becoming west around 5 mph after midnight. Chance of rain 90 percent. .THURSDAY...Showers and thunderstorms likely in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 70 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 60s. East winds around 5 mph. .FRIDAY...Sunny. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Partly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50 percent. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 40 percent. .SUNDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 40 percent. .SUNDAY NIGHT AND MONDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Highs in the upper 80s. Chance of rain 30 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Highs around 80. Chance of rain 50 percent. $$ MOZ041-047-048-090400- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 328 PM CDT Tue Sep 8 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING... .TONIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 100 early this evening. .WEDNESDAY...Sunny with a slight chance of showers and thunderstorms in the morning, then partly sunny with thunderstorms likely with a chance of showers in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph, becoming northwest in the afternoon. Gusts up to 25 mph. Chance of rain 60 percent. .WEDNESDAY NIGHT...Thunderstorms, showers. Locally heavy rainfall possible after midnight. Humid with lows in the upper 60s. North winds around 5 mph, becoming west around 5 mph after midnight. Chance of rain 90 percent. .THURSDAY...Mostly cloudy. Showers and thunderstorms likely in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 70 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 60s. Northeast winds around 5 mph in the evening, becoming light and variable. .FRIDAY...Sunny. Highs in the upper 80s. .FRIDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 20 percent. .SATURDAY...Partly sunny. Showers and thunderstorms likely, mainly in the morning. Highs in the upper 80s. Chance of rain 60 percent. .SATURDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50 percent. .SUNDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A slight chance of showers. Lows in the upper 60s. Chance of rain 20 percent. .MONDAY...Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the upper 80s. Chance of rain 30 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 50 percent. $$ ILZ095>097-MOZ018-019-026-027-034>036-090400- 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 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. .WEDNESDAY...Showers and thunderstorms likely. Highs in the upper 80s. West winds 5 to 10 mph. Chance of rain 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers and thunderstorms likely after midnight. Lows in the upper 60s. West winds around 5 mph. Chance of rain 70 percent. .THURSDAY...Mostly cloudy with a chance of showers and thunderstorms in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. North winds around 5 mph. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly clear. Lows around 60. Northeast winds around 5 mph in the evening, becoming light and variable. .FRIDAY...Sunny. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Partly sunny. Showers and thunderstorms likely, mainly in the morning. Highs in the mid 80s. Chance of rain 60 percent. .SATURDAY NIGHT...Partly cloudy with a chance of thunderstorms. A chance of showers. Lows in the mid 60s. Chance of rain 40 percent. .SUNDAY...Partly sunny with a chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 40 percent. .MONDAY AND MONDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Lows in the mid 60s. Chance of rain 50 percent. .TUESDAY...Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs around 80. Chance of rain 50 percent. $$ ILZ069-070-074-090400- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds around 5 mph. Gusts up to 20 mph after midnight. .WEDNESDAY...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. Southwest winds 5 to 10 mph. Gusts up to 25 mph in the morning. Chance of rain 40 percent. Heat index values up to 104. .WEDNESDAY NIGHT...Showers and thunderstorms. Humid with lows around 70. West winds around 5 mph. Chance of rain 90 percent. .THURSDAY...Showers and thunderstorms, mainly in the morning. Cooler with highs in the lower 80s. West winds around 5 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. North winds around 5 mph in the evening, becoming light and variable. .FRIDAY...Mostly sunny. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 60s. .SATURDAY THROUGH MONDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs in the lower 90s. Lows in the upper 60s. Chance of rain 20 percent. Heat index values up to 100. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 30 percent. $$ MOZ074-084-085-099-090400- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows around 70. South winds around 5 mph. .WEDNESDAY...Sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 104. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with showers and thunderstorms likely after midnight. Humid with lows in the upper 60s. South winds around 5 mph, becoming west around 5 mph after midnight. Chance of rain 70 percent. .THURSDAY...Showers and thunderstorms in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. North winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40 percent. .FRIDAY NIGHT...Mostly clear. Lows in the mid 60s. .SATURDAY...Sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100 in the afternoon. .SATURDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 20 percent. .MONDAY...Sunny. Highs in the upper 80s. .MONDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. A slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20 percent. .TUESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent. $$ MOZ051-052-060-090400- Montgomery MO-Lincoln MO-Warren MO- 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds around 5 mph. .WEDNESDAY...Sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west in the afternoon. Chance of rain 40 percent. Heat index values up to 101. .WEDNESDAY NIGHT...Showers and thunderstorms. Humid with lows in the upper 60s. West winds around 5 mph. Chance of rain 90 percent. .THURSDAY...Showers and thunderstorms likely, mainly in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 70 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. Northeast winds around 5 mph in the evening, becoming light and variable. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the mid 60s. .SATURDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 40 percent. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of thunderstorms. A chance of showers. Lows in the mid 60s. Chance of rain 40 percent. .SUNDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy with a slight chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 30 percent. .MONDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 40 percent. $$ ILZ058-059-098-099-090400- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds 5 to 10 mph. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west in the afternoon. Chance of rain 40 percent. .WEDNESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers and thunderstorms likely after midnight. Humid with lows in the upper 60s. West winds around 5 mph. Chance of rain 70 percent. .THURSDAY...Showers and thunderstorms likely, mainly in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 70 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 60. Northeast winds around 5 mph. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the mid 60s. .SATURDAY...Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 40 percent. .SATURDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 40 percent. .SUNDAY...Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the mid 80s. Chance of rain 40 percent. .SUNDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20 percent. .MONDAY...Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the upper 80s. Chance of rain 30 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 40 percent. $$ ILZ060-064-065-090400- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds around 5 mph. Gusts up to 20 mph after midnight. .WEDNESDAY...Sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west in the afternoon. Chance of rain 40 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Showers and thunderstorms. Lows in the upper 60s. West winds 5 to 10 mph. Chance of rain 80 percent. .THURSDAY...Showers and thunderstorms, mainly in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Partly cloudy. Lows around 60. Northeast winds around 5 mph. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the mid 60s. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs around 90. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 30 percent. .SUNDAY THROUGH MONDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs in the upper 80s. Lows in the mid 60s. Chance of rain 20 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 40 percent. $$ ILZ079-MOZ075-090400- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds around 5 mph. .WEDNESDAY...Sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 40 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers and thunderstorms after midnight. Humid with lows in the upper 60s. West winds 5 to 10 mph. Chance of rain 90 percent. .THURSDAY...Showers and thunderstorms, mainly in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Mostly cloudy. Lows in the mid 60s. North winds around 5 mph in the evening, becoming light and variable. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear. Lows in the mid 60s. .SATURDAY THROUGH SUNDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Highs around 90. Lows in the upper 60s. Chance of rain 20 percent. Heat index values up to 100. .MONDAY...Mostly sunny. Highs around 90. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 30 percent. $$ MOZ059-062-072-073-090400- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 328 PM CDT Tue Sep 8 2026 .TONIGHT...Clear. Not as cool with lows in the lower 70s. South winds around 5 mph. .WEDNESDAY...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. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 102. .WEDNESDAY NIGHT...Showers and thunderstorms. Humid with lows in the upper 60s. West winds around 5 mph. Chance of rain 90 percent. .THURSDAY...Showers and thunderstorms, mainly in the morning. Much cooler. Humid with highs around 80. Northwest winds around 5 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Mostly cloudy. Lows in the lower 60s. Northeast winds around 5 mph in the evening, becoming light and variable. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear. Lows in the mid 60s. .SATURDAY THROUGH SUNDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Lows in the mid 60s. Chance of rain 40 percent. .SUNDAY NIGHT AND MONDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 60s. Highs in the upper 80s. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 40 percent. .TUESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. $$ ILZ102-MOZ065-090400- Monroe IL-Jefferson MO- 328 PM CDT Tue Sep 8 2026 .TONIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds around 5 mph. .WEDNESDAY...Sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 40 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Showers and thunderstorms. Humid with lows in the upper 60s. West winds around 5 mph. Chance of rain 90 percent. .THURSDAY...Showers and thunderstorms, mainly in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 90 percent. .THURSDAY NIGHT...Mostly cloudy. Lows in the lower 60s. North winds around 5 mph in the evening, becoming light and variable. .FRIDAY...Mostly sunny. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear. Lows in the mid 60s. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms. Highs in the lower 90s. Lows in the upper 60s. Chance of rain 30 percent. Heat index values up to 100. .SUNDAY THROUGH MONDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs around 90. Lows in the mid 60s. Chance of rain 20 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 30 percent. $$