Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
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010 FPUS53 KLSX 211653 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 1153 AM CDT Fri Aug 21 2026 ILZ100-101-MOZ061-063-064-220000- 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 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Light and variable winds, becoming west around 5 mph. .TONIGHT...Mostly clear. Lows in the upper 60s. Southwest winds around 5 mph. .SATURDAY...Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds 5 to 10 mph. .SUNDAY...Sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 60s. .MONDAY...Partly sunny. Highs in the lower 80s. .MONDAY 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. .TUESDAY...Mostly sunny. Highs in the mid 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. Highs in the mid 80s. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 60s. Chance of rain 20 percent. .THURSDAY...Sunny. Highs in the mid 80s. $$ MOZ042-049-050-220000- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Southwest winds around 5 mph. .TONIGHT...Mostly clear. Lows in the upper 60s. Northwest winds around 5 mph. .SATURDAY...Sunny. Highs in the mid 80s. North winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds around 5 mph. .SUNDAY...Mostly sunny. Highs in the lower 80s. Northeast winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy. Lows in the lower 60s. .MONDAY...Partly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 30 percent. .TUESDAY...Mostly sunny. Highs in the lower 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. Highs in the mid 80s. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ MOZ041-047-048-220000- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the upper 80s. Southwest winds around 5 mph, becoming west. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. Northwest winds around 5 mph. .SATURDAY...Sunny. Highs in the upper 80s. North winds around 5 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds around 5 mph. .SUNDAY...Sunny in the morning, then becoming partly sunny. Highs in the lower 80s. Northeast winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy. A slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .MONDAY...Partly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .TUESDAY...Mostly sunny. Highs in the mid 80s. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny. Highs in the mid 80s. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ ILZ095>097-MOZ018-019-026-027-034>036-220000- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Southwest winds around 5 mph. .TONIGHT...Mostly clear. Lows in the upper 60s. Northwest winds around 5 mph. .SATURDAY...Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds 5 to 10 mph. .SUNDAY...Mostly sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. .MONDAY...Partly sunny with a slight chance of showers in the morning, then mostly cloudy in the afternoon. Highs in the upper 70s. Chance of rain 20 percent. .MONDAY NIGHT...Mostly cloudy in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .TUESDAY...Mostly sunny. Highs in the lower 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ ILZ069-070-074-220000- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Light and variable winds. .TONIGHT...Mostly clear. Lows in the upper 60s. Light and variable winds, becoming southwest around 5 mph after midnight. .SATURDAY...Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. Northwest winds around 5 mph in the evening, becoming light and variable. .SUNDAY...Sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows in the lower 60s. Highs in the lower 80s. .MONDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 40 percent. .TUESDAY...Mostly sunny. Highs in the mid 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 20 percent. .THURSDAY...Sunny. Highs in the mid 80s. $$ MOZ074-084-085-099-220000- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the upper 80s. Light and variable winds. .TONIGHT...Mostly clear. Lows in the upper 60s. Light and variable winds. .SATURDAY...Sunny. Highs in the upper 80s. Northwest winds around 5 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds around 5 mph in the evening, becoming light and variable. .SUNDAY...Sunny. Highs in the mid 80s. Light and variable winds, becoming north around 5 mph in the afternoon. .SUNDAY NIGHT...Mostly cloudy. A slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 20 percent. .MONDAY...Partly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent. .MONDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 40 percent. .TUESDAY THROUGH WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Highs in the mid 80s. Lows in the mid 60s. Chance of rain 20 percent. .THURSDAY...Sunny. Highs in the mid 80s. $$ MOZ051-052-060-220000- Montgomery MO-Lincoln MO-Warren MO- 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Southwest winds around 5 mph. .TONIGHT...Mostly clear. Lows in the upper 60s. Light and variable winds, becoming northwest around 5 mph after midnight. .SATURDAY...Sunny. Highs in the mid 80s. Northwest winds around 5 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds around 5 mph in the evening, becoming light and variable. .SUNDAY...Mostly sunny. Highs in the lower 80s. Light and variable winds, becoming north around 5 mph in the afternoon. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. .MONDAY...Partly sunny with a slight chance of showers in the morning, then mostly cloudy in the afternoon. Highs around 80. Chance of rain 20 percent. .MONDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 30 percent. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the lower 80s. Lows in the mid 60s. .WEDNESDAY...Partly sunny. Highs in the mid 80s. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s. .THURSDAY...Mostly sunny. Highs in the mid 80s. $$ ILZ058-059-098-099-220000- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Southwest winds around 5 mph. .TONIGHT...Mostly clear. Lows in the upper 60s. Southwest winds around 5 mph. .SATURDAY...Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. Northwest winds 5 to 10 mph. .SUNDAY...Sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s. .MONDAY...Partly sunny. Highs around 80. .MONDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 20 percent. .TUESDAY...Mostly sunny. Highs in the mid 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 60s. .THURSDAY...Sunny. Highs in the mid 80s. $$ ILZ060-064-065-220000- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Light and variable winds, becoming west around 5 mph. .TONIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Southwest winds around 5 mph. Chance of rain 20 percent. .SATURDAY...Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. Northwest winds 5 to 10 mph. .SUNDAY...Sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows in the upper 50s. Highs around 80. .MONDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 20 percent. .TUESDAY...Mostly sunny. Highs in the lower 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 20 percent. .THURSDAY...Sunny. Highs in the mid 80s. $$ ILZ079-MOZ075-220000- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Light and variable winds. .TONIGHT...Mostly clear. Lows in the upper 60s. Light and variable winds, becoming southwest around 5 mph after midnight. .SATURDAY...Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows in the mid 60s. Northwest winds around 5 mph. .SUNDAY...Sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. .MONDAY...Partly sunny. Highs in the lower 80s. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 40 percent. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 80s. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 20 percent. .THURSDAY...Sunny. Highs in the mid 80s. $$ MOZ059-062-072-073-220000- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Light and variable winds. .TONIGHT...Mostly clear. Lows in the upper 60s. Light and variable winds. .SATURDAY...Sunny. Highs in the mid 80s. Northwest winds around 5 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds around 5 mph in the evening, becoming light and variable. .SUNDAY...Mostly sunny. Highs in the lower 80s. Northeast winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy. Lows in the lower 60s. .MONDAY...Partly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. .MONDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 40 percent. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 80s. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 60s. .THURSDAY...Sunny. Highs in the mid 80s. $$ ILZ102-MOZ065-220000- Monroe IL-Jefferson MO- 1153 AM CDT Fri Aug 21 2026 .THIS AFTERNOON...Sunny. Highs in the mid 80s. Light and variable winds. .TONIGHT...Mostly clear. Lows in the upper 60s. Light and variable winds, becoming southwest around 5 mph after midnight. .SATURDAY...Sunny. Highs in the upper 80s. Northwest winds around 5 mph. .SATURDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds around 5 mph in the evening, becoming light and variable. .SUNDAY...Mostly sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT AND MONDAY...Mostly cloudy. Lows in the lower 60s. Highs in the lower 80s. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 40 percent. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 80s. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. Highs in the mid 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s. .THURSDAY...Sunny. Highs in the mid 80s. $$