Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
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189 FPUS53 KLSX 291828 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 127 PM CDT Sat Aug 29 2026 ILZ100-101-MOZ061-063-064-300200- 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 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Mostly sunny. Near steady temperature in the upper 80s. South winds 5 to 10 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. South winds 5 to 10 mph. .SUNDAY...Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 70s. South winds 5 to 10 mph. .MONDAY...Sunny, hot with highs in the upper 90s. South winds 5 to 10 mph. .MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the upper 70s. Highs around 100. Heat index values up to 105. .THURSDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the upper 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Hot with highs in the mid 90s. Chance of rain 20 percent. $$ MOZ042-049-050-300200- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Partly sunny. Highs in the upper 80s. South winds 5 to 10 mph with gusts up to 20 mph. .TONIGHT...Partly cloudy. Not as cool with lows around 70. South winds 5 to 10 mph with gusts up to 20 mph. .SUNDAY...Mostly sunny. Hot with highs in the mid 90s. South winds 10 to 15 mph. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. .MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 105. .THURSDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the mid 90s. Chance of rain 20 percent. $$ MOZ041-047-048-300200- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Partly sunny. Highs in the lower 90s. South winds 5 to 10 mph with gusts up to 20 mph. .TONIGHT...Partly cloudy. Not as cool with lows in the lower 70s. South winds 5 to 10 mph with gusts up to 20 mph. .SUNDAY...Mostly sunny. Hot with highs in the upper 90s. South winds 5 to 10 mph with gusts up to 20 mph. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 100 early in the evening. .MONDAY...Sunny, hot with highs around 100. Southwest winds 5 to 10 mph with gusts up to 20 mph. .MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 105. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 100. $$ ILZ095>097-MOZ018-019-026-027-034>036-300200- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Partly sunny. Highs in the upper 80s. South winds 10 to 15 mph with gusts up to 25 mph. .TONIGHT...Partly cloudy. Not as cool with lows in the lower 70s. South winds 5 to 10 mph with gusts up to 25 mph. .SUNDAY...Mostly sunny. Highs in the mid 90s. South winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 25 mph. Heat index values up to 104 in the afternoon. .MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 105. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Highs in the lower 90s. Chance of rain 20 percent. $$ ILZ069-070-074-300200- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Mostly sunny. Near steady temperature in the upper 80s. South winds around 5 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. South winds around 5 mph. .SUNDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds around 5 mph. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. .TUESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 105. .TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 105. .THURSDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .FRIDAY...Mostly sunny with a slight chance of showers and thunderstorms. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. $$ MOZ074-084-085-099-300200- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Sunny. Near steady temperature in the mid 80s. Southeast winds around 5 mph. .TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the mid 60s. South winds around 5 mph. .SUNDAY...Patchy fog in the morning. Sunny. Highs in the lower 90s. South winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows in the upper 60s. South winds around 5 mph. .MONDAY...Sunny, hot with highs in the mid 90s. South winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 70s. .TUESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Hot. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105. .THURSDAY THROUGH FRIDAY...Mostly clear with a slight chance of showers and thunderstorms. Highs in the mid 90s. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 105. $$ MOZ051-052-060-300200- Montgomery MO-Lincoln MO-Warren MO- 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Partly sunny. Near steady temperature in the mid 80s. South winds around 5 mph. .TONIGHT...Partly cloudy. Lows in the upper 60s. South winds around 5 mph. .SUNDAY...Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph with gusts up to 20 mph. .SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds around 5 mph. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. .MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 105. .THURSDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .FRIDAY...Mostly sunny. A slight chance of showers in the morning. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 100. $$ ILZ058-059-098-099-300200- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Partly sunny. Near steady temperature in the mid 80s. South winds 5 to 10 mph. .TONIGHT...Partly cloudy. Lows in the upper 60s. South winds 5 to 10 mph. .SUNDAY...Mostly sunny. Highs in the mid 90s. South winds 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 70s. South winds 5 to 10 mph. .MONDAY...Sunny, hot with highs in the upper 90s. South winds 5 to 10 mph. .MONDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 105. .THURSDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the upper 90s. Chance of rain 20 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of showers and thunderstorms. Hot. Lows in the mid 70s. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 100. $$ ILZ060-064-065-300200- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Partly sunny. Near steady temperature in the mid 80s. South winds around 5 mph. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 60s. South winds around 5 mph. .SUNDAY...Mostly sunny. Highs in the lower 90s. South winds 5 to 10 mph. .SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 70s. South winds 5 to 10 mph. .MONDAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph. .MONDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 105. .THURSDAY AND THURSDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms. Hot. Highs in the upper 90s. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105. .FRIDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 20 percent. $$ ILZ079-MOZ075-300200- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Mostly sunny. Near steady temperature in the upper 80s. South winds around 5 mph. .TONIGHT...Mostly clear. Lows in the mid 60s. South winds around 5 mph. .SUNDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows around 70. South winds around 5 mph. .MONDAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 104. .MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 100 early in the evening. .TUESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 105. .TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 105. .THURSDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .FRIDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 105. $$ MOZ059-062-072-073-300200- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Mostly sunny. Near steady temperature in the upper 80s. South winds around 5 mph. .TONIGHT...Mostly clear. Patchy fog after midnight. Lows in the upper 60s. South winds around 5 mph. .SUNDAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds around 5 mph. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. .MONDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 105. .FRIDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 100. $$ ILZ102-MOZ065-300200- Monroe IL-Jefferson MO- 127 PM CDT Sat Aug 29 2026 .THIS AFTERNOON...Mostly sunny. Near steady temperature in the upper 80s. South winds around 5 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. South winds around 5 mph. .SUNDAY...Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds around 5 mph. .MONDAY...Sunny, hot with highs in the upper 90s. South winds 5 to 10 mph. Heat index values up to 105 in the afternoon. .MONDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 110. .THURSDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .FRIDAY...Mostly sunny. A slight chance of showers in the morning. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. $$