FPUS53 KLSX 231008 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 507 AM CDT Sun Aug 23 2026 ILZ100-101-MOZ061-063-064-231800- 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 507 AM CDT Sun Aug 23 2026 .TODAY...Sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .TONIGHT...Partly cloudy. Lows in the lower 60s. North winds around 5 mph, becoming northeast after midnight. .MONDAY...Sunny. Highs in the lower 80s. East 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. Southeast winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 60s. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the upper 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. A slight chance of showers in the evening. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Mostly 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. $$ MOZ042-049-050-231800- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 507 AM CDT Sun Aug 23 2026 .TODAY...Partly sunny. Highs around 80. North winds 5 to 10 mph. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. North winds around 5 mph, becoming east after midnight. .MONDAY...Mostly sunny. Highs around 80. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s. East winds 5 to 10 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny. Highs in the mid 80s. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .FRIDAY...Mostly sunny. Highs in the lower 80s. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Mostly sunny with a slight chance of thunderstorms. A slight chance of showers. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ041-047-048-231800- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 507 AM CDT Sun Aug 23 2026 .TODAY...Partly sunny. Highs in the lower 80s. North winds around 5 mph. .TONIGHT...Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Northeast winds around 5 mph, becoming east after midnight. Chance of rain 20 percent. .MONDAY...Mostly 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...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s. East winds around 5 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the upper 60s. Highs in the upper 80s. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .FRIDAY...Mostly sunny. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the upper 60s. .SATURDAY...Mostly sunny with a slight chance of thunderstorms. A slight chance of showers. Highs in the upper 80s. Chance of rain 20 percent. $$ ILZ095>097-MOZ018-019-026-027-034>036-231800- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 507 AM CDT Sun Aug 23 2026 .TODAY...Mostly sunny. Highs around 80. Northwest winds 5 to 10 mph. .TONIGHT...Mostly cloudy in the evening, then clearing. Lows in the upper 50s. Northeast winds around 5 mph, becoming southeast after midnight. .MONDAY...Mostly sunny. Highs around 80. Southeast winds 5 to 10 mph. .MONDAY NIGHT...Partly cloudy. Lows in the lower 60s. East winds 5 to 10 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the upper 60s. Highs in the upper 80s. .WEDNESDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 20 percent. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the lower 60s. .FRIDAY...Mostly sunny. Highs in the lower 80s. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 80s. Chance of rain 30 percent. $$ ILZ069-070-074-231800- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 507 AM CDT Sun Aug 23 2026 .TODAY...Sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. North winds around 5 mph, becoming northeast after midnight. .MONDAY...Sunny. Highs in the lower 80s. Southeast winds around 5 mph, becoming northwest in the afternoon. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable. .TUESDAY...Sunny. Highs in the mid 80s. East winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the mid 60s. 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 mid 80s. Lows in the mid 60s. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ074-084-085-099-231800- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 507 AM CDT Sun Aug 23 2026 .TODAY...Mostly sunny. Highs in the lower 80s. North winds around 5 mph. .TONIGHT...Mostly cloudy. Lows in the lower 60s. Northeast winds around 5 mph. .MONDAY...Mostly sunny. Highs around 80. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. A chance of showers after midnight. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable. Chance of rain 30 percent. .TUESDAY...Mostly sunny. Highs in the lower 80s. Southeast winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT THROUGH FRIDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ051-052-060-231800- Montgomery MO-Lincoln MO-Warren MO- 507 AM CDT Sun Aug 23 2026 .TODAY...Mostly sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows around 60. North 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 in the evening, then becoming mostly clear. Lows in the lower 60s. East winds 5 to 10 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the mid 60s. Highs in the upper 80s. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .FRIDAY...Mostly sunny. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Mostly 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. $$ ILZ058-059-098-099-231800- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 507 AM CDT Sun Aug 23 2026 .TODAY...Sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .TONIGHT...Partly cloudy. Lows in the upper 50s. North winds around 5 mph, becoming east after midnight. .MONDAY...Sunny. Highs in the lower 80s. Southeast winds around 5 mph, becoming northeast in the afternoon. .MONDAY NIGHT...Partly cloudy. Lows in the lower 60s. East winds around 5 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 60s. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear. A chance of showers with a slight chance of thunderstorms in the evening. Lows in the mid 60s. Chance of rain 30 percent. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s. Lows in the lower 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s. .SATURDAY...Mostly sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20 percent. $$ ILZ060-064-065-231800- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 507 AM CDT Sun Aug 23 2026 .TODAY...Sunny. Highs in the lower 80s. Northwest winds 5 to 10 mph. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. North winds around 5 mph. .MONDAY...Sunny. Highs in the lower 80s. Southeast winds around 5 mph, becoming northwest in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows around 60. Northeast winds around 5 mph in the evening, becoming light and variable. .TUESDAY...Mostly sunny. Highs in the lower 80s. Southeast winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 60s. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .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 THROUGH FRIDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the mid 60s. .SATURDAY...Mostly sunny. Highs in the mid 80s. $$ ILZ079-MOZ075-231800- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 507 AM CDT Sun Aug 23 2026 .TODAY...Sunny. Highs in the lower 80s. Northwest winds around 5 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows around 60. North winds around 5 mph in the evening, becoming light and variable. .MONDAY...Sunny. Highs in the lower 80s. East winds around 5 mph. .MONDAY NIGHT...Partly cloudy. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable. .TUESDAY...Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 60s. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT THROUGH FRIDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ059-062-072-073-231800- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 507 AM CDT Sun Aug 23 2026 .TODAY...Mostly sunny. Highs in the lower 80s. Northwest winds around 5 mph. .TONIGHT...Mostly cloudy in the evening, then becoming partly 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 in the evening, then clearing. Lows in the lower 60s. East winds around 5 mph. .TUESDAY...Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 80s. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .FRIDAY...Sunny. A slight chance of showers in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers in the evening. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Mostly 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. $$ ILZ102-MOZ065-231800- Monroe IL-Jefferson MO- 507 AM CDT Sun Aug 23 2026 .TODAY...Mostly sunny. Highs in the lower 80s. Northwest winds around 5 mph. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. North winds around 5 mph, becoming east after midnight. .MONDAY...Sunny. Highs in the lower 80s. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable. .TUESDAY...Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the mid 60s. Highs in the upper 80s. .WEDNESDAY NIGHT THROUGH FRIDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers in the evening. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$