FPUS53 KLSX 230418 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 1118 PM CDT Sat Aug 22 2026 ILZ100-101-MOZ061-063-064-231200- 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 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Mostly clear. Lows in the lower 60s. Northwest winds around 5 mph. .SUNDAY...Mostly sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. Northeast winds around 5 mph. .MONDAY...Mostly sunny. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 60s. East winds around 5 mph. Chance of rain 20 percent. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the upper 60s. .WEDNESDAY...Partly sunny. Highs in the upper 80s. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 60s. Chance of rain 20 percent. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. .SATURDAY...Mostly sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ MOZ042-049-050-231200- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Mostly clear. Lows in the lower 60s. North winds around 5 mph. .SUNDAY...Partly sunny. Highs around 80. North winds 5 to 10 mph. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. Northeast winds around 5 mph, becoming southeast around 5 mph after midnight. .MONDAY...Partly sunny. Highs around 80. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. Lows in the mid 60s. East winds around 5 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ MOZ041-047-048-231200- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Mostly clear. Lows in the lower 60s. North winds around 5 mph. .SUNDAY...Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. East winds around 5 mph. Chance of rain 20 percent. .MONDAY...Partly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the lower 80s. Southeast winds around 5 mph. Chance of rain 20 percent. .MONDAY NIGHT...Mostly clear. Lows in the mid 60s. East winds around 5 mph. .TUESDAY...Mostly sunny. Highs in the upper 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows in the mid 60s. Highs in the upper 80s. .FRIDAY...Mostly 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...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs around 90. Chance of rain 20 percent. $$ ILZ095>097-MOZ018-019-026-027-034>036-231200- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Clear. Lows around 60. Northwest winds around 5 mph. .SUNDAY...Mostly sunny. Highs around 80. Northwest winds 5 to 10 mph. .SUNDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the upper 50s. Northeast winds around 5 mph, becoming southeast around 5 mph after midnight. .MONDAY...Mostly sunny. Highs around 80. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. Lows in the lower 60s. East winds around 5 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers in the evening. Lows in the upper 60s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 80s. .WEDNESDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 20 percent. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the mid 60s. .FRIDAY...Mostly sunny. Highs in the mid 80s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 20 percent. $$ ILZ069-070-074-231200- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Mostly clear. Lows in the lower 60s. Light and variable winds, becoming northwest around 5 mph. .SUNDAY...Sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northeast winds around 5 mph. .MONDAY...Mostly sunny. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy with a slight chance of showers. A slight chance of thunderstorms after midnight. Lows in the lower 60s. East winds around 5 mph. Chance of rain 20 percent. .TUESDAY THROUGH WEDNESDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the upper 60s. .THURSDAY THROUGH FRIDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .SATURDAY...Mostly sunny. Highs in the upper 80s. $$ MOZ074-084-085-099-231200- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Clear. Lows in the lower 60s. Light and variable winds, becoming north around 5 mph. .SUNDAY...Mostly sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy. Lows in the lower 60s. Northeast winds around 5 mph. .MONDAY...Partly sunny. Highs around 80. Southeast winds around 5 mph. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 60s. Southeast winds around 5 mph in the evening, becoming light and variable. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .WEDNESDAY...Partly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s. .THURSDAY THROUGH FRIDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .SATURDAY...Mostly sunny. Highs in the upper 80s. $$ MOZ051-052-060-231200- Montgomery MO-Lincoln MO-Warren MO- 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Mostly clear. Lows in the lower 60s. Northwest winds around 5 mph. .SUNDAY...Mostly sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .SUNDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows around 60. Northeast winds around 5 mph, becoming east after midnight. .MONDAY...Mostly sunny. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the lower 60s. East winds around 5 mph. Chance of rain 20 percent. .TUESDAY...Mostly sunny. Highs in the mid 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. Highs in the mid 80s. .WEDNESDAY NIGHT THROUGH FRIDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 80s. Chance of rain 20 percent. $$ ILZ058-059-098-099-231200- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Mostly clear. Lows around 60. Northwest winds around 5 mph. .SUNDAY...Sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s. North winds around 5 mph, becoming east around 5 mph after midnight. .MONDAY...Mostly sunny. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 60s. East winds around 5 mph. Chance of rain 20 percent. .TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 60s. Chance of rain 20 percent. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s. Lows in the mid 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 80s. Chance of rain 20 percent. $$ ILZ060-064-065-231200- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Mostly clear. Lows in the lower 60s. North winds around 5 mph. .SUNDAY...Sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. North winds around 5 mph, becoming northeast after midnight. .MONDAY...Mostly sunny. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. Lows in the lower 60s. Light and variable winds, becoming east around 5 mph after midnight. .TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .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 THROUGH FRIDAY...Mostly clear. Highs in the mid 80s. Lows in the mid 60s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 60s. Highs in the mid 80s. $$ ILZ079-MOZ075-231200- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Clear. Lows in the mid 60s. Light and variable winds, becoming northwest around 5 mph. .SUNDAY...Mostly sunny. Highs in the lower 80s. Northwest winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy. Lows around 60. Northeast winds around 5 mph, becoming southeast after midnight. .MONDAY...Sunny. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the lower 60s. Southeast winds around 5 mph. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .WEDNESDAY...Partly sunny. Highs in the mid 80s. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 60s. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 60s. Highs in the upper 80s. $$ MOZ059-062-072-073-231200- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Clear. Lows in the lower 60s. Light and variable winds, becoming north around 5 mph. .SUNDAY...Mostly sunny. Highs in the lower 80s. North winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy. Lows in the lower 60s. North winds around 5 mph, becoming southeast after midnight. .MONDAY...Mostly sunny. Highs around 80. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. Lows in the mid 60s. Southeast winds around 5 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers 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 upper 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 60s. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s. Lows in the mid 60s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ ILZ102-MOZ065-231200- Monroe IL-Jefferson MO- 1118 PM CDT Sat Aug 22 2026 .OVERNIGHT...Mostly clear. Lows in the lower 60s. Light and variable winds, becoming northwest around 5 mph. .SUNDAY...Sunny in the morning, then becoming partly sunny. Highs in the lower 80s. Northwest winds around 5 mph. .SUNDAY NIGHT...Mostly cloudy. Lows in the lower 60s. North winds around 5 mph in the evening, becoming light and variable. .MONDAY...Mostly sunny. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the mid 60s. Southeast winds around 5 mph. Chance of rain 20 percent. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .WEDNESDAY...Partly sunny. Highs in the upper 80s. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the upper 60s. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 60s. Highs in the upper 80s. $$