Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
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435 FPUS53 KLSX 141033 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 532 AM CDT Fri Aug 14 2026 ILZ100-101-MOZ061-063-064-141800- 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 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Partly sunny with a chance of showers and thunderstorms this morning, then sunny this afternoon. Hot with highs in the mid 90s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 113 this afternoon. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the upper 70s. Southeast winds around 5 mph. Heat index values up to 113 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 112. .SATURDAY NIGHT...Partly cloudy. Humid with lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 112 early in the evening. .SUNDAY...Mostly sunny. Hot with highs in the mid 90s. West winds 5 to 10 mph. Heat index values up to 111. .SUNDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 110 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the upper 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the lower 70s. .WEDNESDAY...Mostly sunny. Highs in the mid 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY 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 lower 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. $$ MOZ049-050-141800- Osage MO-Callaway MO- Including the city of Fulton 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. Hot with highs in the upper 90s. South winds around 5 mph. Heat index values up to 108 this afternoon. .TONIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 109 early in the evening. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 108 in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 108 early in the evening. .SUNDAY...Mostly sunny. Humid with highs in the lower 90s. West winds 5 to 10 mph. Heat index values up to 107 in the afternoon. .SUNDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows around 70. Chance of rain 30 percent. Heat index values up to 105 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the lower 70s. .WEDNESDAY...Mostly sunny. Highs in the lower 90s. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ042-141800- Audrain MO- Including the city of Mexico 533 AM CDT Fri Aug 14 2026 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. Highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 106 this afternoon. .TONIGHT...Mostly clear in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. South winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 107 early in the evening. .SATURDAY...Partly sunny. A chance of showers and thunderstorms in the morning. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 30 percent. Heat index values up to 104 in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 105 early in the evening. .SUNDAY...Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 80s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 101. .SUNDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 60s. Chance of rain 20 percent. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the lower 80s. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the lower 70s. .WEDNESDAY...Mostly sunny. Highs in the upper 80s. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 20 percent. .THURSDAY...Partly sunny. Highs in the lower 80s. $$ MOZ041-047-048-141800- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. Hot with highs in the upper 90s. South winds around 5 mph. Heat index values up to 110 this afternoon. .TONIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 110 early in the evening. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 109 in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 109 early in the evening. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. West winds around 5 mph. Chance of rain 20 percent. Heat index values up to 108 in the afternoon. .SUNDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the upper 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the mid 70s. .WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ ILZ095-096-MOZ018-019-141800- Adams IL-Brown IL-Knox MO-Lewis MO- Including the cities of Quincy and Mount Sterling 533 AM CDT Fri Aug 14 2026 .TODAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Southeast winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 107 this afternoon. .TONIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. East winds 5 to 10 mph, becoming south after midnight. Chance of rain 50 percent. Heat index values up to 107 early in the evening. .SATURDAY...Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny in the afternoon. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent. Heat index values up to 108 in the afternoon. .SATURDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. West winds around 5 mph. Chance of rain 20 percent. Heat index values up to 109 early in the evening. .SUNDAY...Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 80s. Northwest winds 5 to 10 mph. Chance of rain 30 percent. Heat index values up to 101. .SUNDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 60s. Chance of rain 20 percent. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the lower 80s. Lows in the mid 60s. .TUESDAY...Sunny. Highs in the mid 80s. .TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows around 70. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the upper 80s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 20 percent. .THURSDAY...Mostly sunny. A slight chance of showers in the morning. Highs in the lower 80s. Chance of rain 20 percent. $$ ILZ097-MOZ026-027-034>036-141800- Pike IL-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO- Including the cities of Pittsfield, Hannibal, and Bowling Green 533 AM CDT Fri Aug 14 2026 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. Highs in the lower 90s. Southeast winds around 5 mph. Heat index values up to 108 this afternoon. .TONIGHT...Partly cloudy in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. Southeast winds around 5 mph. Chance of rain 50 percent. Heat index values up to 108 early in the evening. .SATURDAY...Partly sunny. A chance of showers and thunderstorms in the morning. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent. Heat index values up to 107 in the afternoon. .SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 108 early in the evening. .SUNDAY...Partly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 80s. Northwest winds around 5 mph. Chance of rain 30 percent. Heat index values up to 105. .SUNDAY NIGHT...Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 60s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the lower 80s. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the lower 70s. .WEDNESDAY...Mostly sunny. Highs in the upper 80s. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 20 percent. .THURSDAY...Mostly sunny. A slight chance of showers in the morning. Highs in the lower 80s. Chance of rain 20 percent. $$ ILZ069-074-141800- Clinton IL-Washington IL- 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Partly sunny with a chance of showers and thunderstorms this morning, then sunny this afternoon. Hot with highs in the mid 90s. South winds around 5 mph. Chance of rain 30 percent. Heat index values up to 115 this afternoon. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. Southeast winds around 5 mph. Heat index values up to 114 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 115 in the afternoon. .SATURDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 113 early in the evening. .SUNDAY...Mostly sunny. Hot with highs in the mid 90s. West winds around 5 mph. Heat index values up to 112. .SUNDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 110 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the upper 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows around 70. .WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. $$ ILZ070-141800- Marion IL- Including the cities of Centralia and Salem 533 AM CDT Fri Aug 14 2026 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. A slight chance of showers and thunderstorms this morning. Highs in the lower 90s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 111 this afternoon. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. Southeast winds around 5 mph. Heat index values up to 108 early in the evening. .SATURDAY...Sunny with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 111 in the afternoon. .SATURDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 108 early in the evening. .SUNDAY...Mostly sunny. Humid with highs in the mid 90s. West winds around 5 mph. Heat index values up to 109. .SUNDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 105 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the upper 60s. .WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 100 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of rain 30 percent. .THURSDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ074-084-085-099-141800- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 108. .TONIGHT...Mostly clear. Lows in the mid 70s. South winds around 5 mph. Heat index values up to 105 early in the evening. .SATURDAY...Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 107. .SATURDAY NIGHT...Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 105 early in the evening. .SUNDAY...Sunny, hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 108. .SUNDAY NIGHT AND MONDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the upper 80s. Chance of rain 20 percent. Heat index values up to 105. .MONDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 60s. Chance of rain 20 percent. .TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs in the lower 90s. Lows around 70. Heat index values up to 105. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Highs around 90. Chance of rain 20 percent. Heat index values up to 100. $$ MOZ051-060-141800- Montgomery MO-Warren MO- 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. Highs in the mid 90s. South winds around 5 mph. Heat index values up to 110 this afternoon. .TONIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 110 early in the evening. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Humid with highs in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 109 in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 109 early in the evening. .SUNDAY...Mostly sunny. Humid with highs in the lower 90s. West winds around 5 mph. Heat index values up to 108 in the afternoon. .SUNDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Lows in the upper 60s. Chance of rain 30 percent. Heat index values up to 105 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows around 70. .WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 20 percent. .THURSDAY...Mostly sunny. Highs in the mid 80s. $$ MOZ052-141800- Lincoln MO- 533 AM CDT Fri Aug 14 2026 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. Highs in the mid 90s. South winds around 5 mph. Heat index values up to 111 this afternoon. .TONIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. Southeast winds around 5 mph. Chance of rain 20 percent. Heat index values up to 111 early in the evening. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Humid with highs in the mid 90s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 110 in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 109 early in the evening. .SUNDAY...Mostly sunny. Humid with highs in the lower 90s. West winds around 5 mph. Heat index values up to 108. .SUNDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Lows around 70. Chance of rain 30 percent. Heat index values up to 105 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the lower 70s. .WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 100. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows around 70. Chance of rain 20 percent. .THURSDAY...Mostly sunny. Highs in the mid 80s. $$ ILZ058-059-098-099-141800- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 533 AM CDT Fri Aug 14 2026 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Partly sunny with a chance of showers and thunderstorms this morning, then sunny this afternoon. Highs in the lower 90s. Southeast winds around 5 mph. Chance of rain 40 percent. Heat index values up to 109 this afternoon. .TONIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. Southeast winds around 5 mph. Chance of rain 20 percent. Heat index values up to 108 early in the evening. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 108 in the afternoon. .SATURDAY NIGHT...Partly cloudy. Humid with lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 107 early in the evening. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 107. .SUNDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 30 percent. Heat index values up to 105 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the upper 60s. .WEDNESDAY...Mostly 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. .WEDNESDAY 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. .THURSDAY...Mostly sunny. Highs in the mid 80s. $$ ILZ060-064-065-141800- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 533 AM CDT Fri Aug 14 2026 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. A chance of showers and thunderstorms this morning. Highs in the lower 90s. Southeast winds around 5 mph, becoming south around 5 mph this afternoon. Chance of rain 40 percent. Heat index values up to 110 this afternoon. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. Southeast winds around 5 mph. Heat index values up to 109 early in the evening. .SATURDAY...Mostly sunny. Humid with highs in the lower 90s. South winds around 5 mph. Heat index values up to 111 in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 109 early in the evening. .SUNDAY...Mostly sunny. Humid with highs in the lower 90s. West winds 5 to 10 mph. Heat index values up to 109. .SUNDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows around 70. Chance of rain 40 percent. Heat index values up to 105 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 80s. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s. Lows in the upper 60s. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 20 percent. Heat index values up to 100 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 30 percent. .THURSDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ ILZ079-MOZ075-141800- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. Hot with highs in the upper 90s. South winds around 5 mph. Heat index values up to 112. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds around 5 mph. Heat index values up to 111 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 111. .SATURDAY NIGHT...Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 111 early in the evening. .SUNDAY...Sunny, hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 111. .SUNDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 110 early in the evening. .MONDAY...Partly sunny. A slight chance of showers and thunderstorms in the morning. Not as warm with highs in the upper 80s. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy. Lows in the upper 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows around 70. .WEDNESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. $$ MOZ059-062-072-073-141800- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. Hot with highs in the upper 90s. South winds around 5 mph. Heat index values up to 110. .TONIGHT...Mostly clear. Lows in the mid 70s. South winds around 5 mph. Heat index values up to 109 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 108. .SATURDAY NIGHT...Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 108 early in the evening. .SUNDAY...Mostly sunny. Hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 109. .SUNDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 105 early in the evening. .MONDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Not as warm with highs in the mid 80s. Chance of rain 20 percent. .MONDAY NIGHT...Partly cloudy. Lows in the mid 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the lower 70s. .WEDNESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny. Highs in the upper 80s. $$ ILZ102-MOZ065-141800- Monroe IL-Jefferson MO- 533 AM CDT Fri Aug 14 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY... .TODAY...Mostly sunny. A slight chance of showers and thunderstorms this morning. Hot with highs in the upper 90s. South winds around 5 mph. Chance of rain 20 percent. Heat index values up to 113. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds around 5 mph. Heat index values up to 112 early in the evening. .SATURDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 112. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 111 early in the evening. .SUNDAY...Mostly sunny. Hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 113. .SUNDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 110 early in the evening. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the upper 80s. Lows in the upper 60s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the lower 70s. .WEDNESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. $$