Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
033 FPUS53 KLSX 131013 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 513 AM CDT Sun Sep 13 2026 ILZ100-101-MOZ061-063-064-131800- 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 513 AM CDT Sun Sep 13 2026 .TODAY...Partly sunny. Highs in the upper 80s. North winds 5 to 10 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph. .MONDAY...Partly sunny. Highs in the upper 80s. Southeast winds 10 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 70s. Southeast winds 10 to 15 mph. .TUESDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 107. .TUESDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 70s. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows around 70. Chance of rain 30 percent. .FRIDAY...Mostly sunny with a 20 percent chance of showers. Highs in the upper 80s. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent. .SATURDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. $$ MOZ042-049-050-131800- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 513 AM CDT Sun Sep 13 2026 .TODAY...Mostly cloudy this morning, then becoming mostly sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph. .TONIGHT...Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent. .MONDAY...Partly sunny with a slight chance of showers and thunderstorms in the morning, then sunny in the afternoon. Highs in the upper 80s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. .MONDAY NIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 102. .TUESDAY NIGHT...A chance of thunderstorms. Showers likely, mainly in the evening. Lows in the upper 60s. Chance of rain 70 percent. .WEDNESDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the upper 80s. Chance of rain 50 percent. Heat index values up to 100 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the lower 70s. Chance of rain 20 percent. .THURSDAY...Mostly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the upper 80s. Chance of rain 30 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 40 percent. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Chance of rain 40 percent. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 70s. Chance of rain 20 percent. $$ MOZ041-047-048-131800- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 513 AM CDT Sun Sep 13 2026 .TODAY...Mostly cloudy this morning, then becoming mostly sunny. Highs in the lower 80s. Northeast winds 5 to 10 mph. .TONIGHT...Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 60s. East winds 5 to 10 mph. Chance of rain 20 percent. .MONDAY...Partly sunny with a slight chance of showers and thunderstorms in the morning, then sunny in the afternoon. Highs in the lower 90s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. Heat index values up to 102 in the afternoon. .MONDAY NIGHT...Mostly clear. Not as cool with lows in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 103. .TUESDAY NIGHT...A chance of thunderstorms. Showers likely, mainly in the evening. Lows in the upper 60s. Chance of rain 70 percent. .WEDNESDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 90s. Chance of rain 50 percent. Heat index values up to 100 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 70s. .THURSDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 40 percent. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs around 80. Chance of rain 20 percent. $$ ILZ095>097-MOZ018-019-026-027-034>036-131800- 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 513 AM CDT Sun Sep 13 2026 .TODAY...Partly sunny. A slight chance of showers and thunderstorms this afternoon. Cooler with highs in the mid 70s. North winds 5 to 10 mph. Chance of rain 20 percent. .TONIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a slight chance of showers. Lows in the lower 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent. .MONDAY...Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then mostly sunny in the afternoon. Highs in the lower 80s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. .MONDAY NIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Mostly sunny. A chance of showers in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west in the afternoon. Chance of rain 70 percent. .TUESDAY NIGHT...Showers with a chance of thunderstorms. Lows in the mid 60s. Chance of rain 90 percent. .WEDNESDAY...Becoming partly sunny in the afternoon. A slight chance of thunderstorms. Showers likely, mainly in the morning. Highs in the lower 80s. Chance of rain 70 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 50 percent. .THURSDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 40 percent. .FRIDAY...Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 40 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows in the lower 60s. Chance of rain 50 percent. .SATURDAY...Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the mid 70s. Chance of rain 50 percent. $$ ILZ069-070-074-131800- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 513 AM CDT Sun Sep 13 2026 .TODAY...Mostly sunny. Highs in the upper 80s. Northwest winds 5 to 10 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph. .MONDAY...Mostly sunny. Highs in the upper 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows around 70. Southeast winds 5 to 10 mph. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 107. .TUESDAY NIGHT...Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 70s. Heat index values up to 100 early in the evening. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms. Highs in the mid 90s. Lows around 70. Chance of rain 20 percent. Heat index values up to 100. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. A 20 percent chance of showers. Highs around 90. Lows in the mid 60s. .SATURDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. $$ MOZ074-084-085-099-131800- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 513 AM CDT Sun Sep 13 2026 .TODAY...Mostly sunny. A slight chance of showers and thunderstorms this afternoon. Highs around 90. Light and variable winds, becoming northwest around 5 mph this afternoon. Chance of rain 20 percent. .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. Northeast winds around 5 mph. Chance of rain 20 percent. .MONDAY...Mostly sunny. Highs in the upper 80s. East winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the upper 60s. Southeast winds around 5 mph. .TUESDAY...Sunny. Highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 105. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows around 70. Highs in the lower 90s. Heat index values up to 105. .THURSDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY...Sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 80s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the lower 60s. .SATURDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. $$ MOZ051-052-060-131800- Montgomery MO-Lincoln MO-Warren MO- 513 AM CDT Sun Sep 13 2026 .TODAY...Partly 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 in the mid 80s. Southeast winds 5 to 10 mph with gusts up to 20 mph. .MONDAY NIGHT...Mostly clear. Not as cool with lows in the lower 70s. South winds 5 to 10 mph with gusts up to 25 mph. .TUESDAY...Sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 40 percent. Heat index values up to 104. .TUESDAY NIGHT...Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the evening. Lows in the upper 60s. Chance of rain 60 percent. .WEDNESDAY...Partly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 50 percent. Heat index values up to 100 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows around 70. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms. Highs around 90. Lows in the upper 60s. Chance of rain 30 percent. .FRIDAY...Mostly sunny with a 20 percent chance of showers. Highs in the mid 80s. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Chance of rain 40 percent. .SATURDAY...Mostly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 40 percent. $$ ILZ058-059-098-099-131800- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 513 AM CDT Sun Sep 13 2026 .TODAY...Partly sunny. Highs in the lower 80s. North winds 5 to 10 mph. .TONIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Northeast winds 5 to 10 mph. Chance of rain 20 percent. .MONDAY...Mostly cloudy in the morning, then becoming mostly sunny. Highs in the mid 80s. Southeast winds 10 to 15 mph. .MONDAY NIGHT...Mostly clear. Not as cool with lows in the lower 70s. Southeast winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. South winds around 10 mph with gusts up to 20 mph, becoming west in the afternoon. Chance of rain 20 percent. Heat index values up to 102. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 50 percent. .WEDNESDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning. Highs in the lower 90s. Chance of rain 50 percent. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20 percent. .THURSDAY...Mostly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 90s. Chance of rain 30 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 30 percent. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. A 30 percent chance of showers. Highs in the upper 80s. Lows in the lower 60s. .SATURDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. $$ ILZ060-064-065-131800- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 513 AM CDT Sun Sep 13 2026 .TODAY...Partly sunny. Highs in the mid 80s. North winds 5 to 10 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Less humid with lows in the lower 60s. Northeast winds 5 to 10 mph. .MONDAY...Mostly sunny. Highs in the mid 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows in the upper 60s. Southeast winds 5 to 10 mph. .TUESDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Warmer with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 104. .TUESDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 50 percent. Heat index values up to 100 early in the evening. .WEDNESDAY...Mostly 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. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. .THURSDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. .THURSDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 30 percent. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. A 30 percent chance of showers. Highs in the upper 80s. Lows in the lower 60s. .SATURDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30 percent. $$ ILZ079-MOZ075-131800- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 513 AM CDT Sun Sep 13 2026 .TODAY...Mostly sunny. Highs in the upper 80s. Northwest winds around 5 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 60s. Northeast winds around 5 mph. .MONDAY...Mostly sunny. Highs in the upper 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows around 70. Southeast winds 5 to 10 mph. .TUESDAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 108. .TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105. .THURSDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. A 20 percent chance of showers. Highs in the upper 80s. Lows in the mid 60s. .SATURDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ059-062-072-073-131800- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 513 AM CDT Sun Sep 13 2026 .TODAY...Mostly cloudy this morning, then becoming mostly sunny. Highs in the upper 80s. Light and variable winds, becoming north around 5 mph this afternoon. .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Northeast winds around 5 mph. Chance of rain 20 percent. .MONDAY...Partly sunny in the morning, then clearing. Highs in the upper 80s. Southeast winds 5 to 10 mph. .MONDAY NIGHT...Clear. Lows in the lower 70s. South winds 5 to 10 mph. .TUESDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the evening. Lows around 70. Chance of rain 50 percent. .WEDNESDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 70s. .THURSDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. A 30 percent chance of showers. Highs in the upper 80s. Lows in the lower 60s. .SATURDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. $$ ILZ102-MOZ065-131800- Monroe IL-Jefferson MO- 513 AM CDT Sun Sep 13 2026 .TODAY...Partly sunny. Highs in the upper 80s. North winds around 5 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 60s. Northeast winds around 5 mph. .MONDAY...Mostly sunny. Highs in the upper 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 70s. Southeast winds 5 to 10 mph. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 109. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows around 70. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 70s. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. .THURSDAY NIGHT...Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent. Heat index values up to 100 early in the evening. .FRIDAY...Mostly sunny with a 20 percent chance of showers. Highs in the upper 80s. .FRIDAY NIGHT...Partly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent. .SATURDAY...Mostly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent. $$