779 FPUS53 KLSX 290743 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 243 AM CDT Mon Jun 29 2026 ILZ100-101-MOZ061-063-064-291500- 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 243 AM CDT Mon Jun 29 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Hot with highs in the mid 90s. South winds 10 to 15 mph. Heat index values up to 110. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 10 to 15 mph. Heat index values up to 109 early in the evening. .TUESDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 110. .TUESDAY NIGHT...Clear with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 110 early in the evening. .WEDNESDAY...Sunny, hot with highs in the upper 90s. South winds 5 to 10 mph. Heat index values up to 109. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110. .FRIDAY...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 110. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 110 early in the evening. .INDEPENDENCE DAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. .SATURDAY NIGHT...Partly cloudy. 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. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 100. $$ MOZ042-049-050-291500- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Highs in the lower 90s. South winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 106 this afternoon. .TONIGHT...Mostly clear. Lows in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 104 early in the evening. .TUESDAY...Sunny. Highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 104. .TUESDAY NIGHT...Clear. Lows in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph, diminishing to around 5 mph after midnight. Heat index values up to 104 early in the evening. .WEDNESDAY...Sunny. Highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 103. .WEDNESDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .INDEPENDENCE DAY AND SATURDAY NIGHT...Partly cloudy. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100. .SUNDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs around 90. Chance of rain 20 percent. $$ MOZ041-047-048-291500- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Highs in the mid 90s. South winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 107 this afternoon. .TONIGHT...Mostly clear. Lows in the upper 70s. South winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 107 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 106 in the afternoon. .TUESDAY NIGHT...Clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 106 in the afternoon. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 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 AND FRIDAY NIGHT...Mostly clear. Hot. Highs in the mid 90s. Lows in the mid 70s. Heat index values up to 105. .INDEPENDENCE DAY AND SATURDAY NIGHT...Partly cloudy. Highs in the mid 90s. Lows in the mid 70s. Heat index values up to 105. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the lower 90s. Chance of rain 20 percent. $$ ILZ095>097-MOZ018-019-026-027-034>036-291500- 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 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Partly sunny. Highs in the lower 90s. South winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 106 this afternoon. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Humid with lows in the mid 70s. South winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 106 early in the evening. .TUESDAY...Sunny with highs in the lower 90s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 105. .TUESDAY NIGHT...Clear. Lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 30 mph in the evening. Heat index values up to 105 early in the evening. .WEDNESDAY...Sunny. Highs in the lower 90s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 104. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid 70s. Highs in the mid 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...Sunny. A slight chance of showers and thunderstorms in the morning. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105. .FRIDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .INDEPENDENCE DAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 100. .SATURDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .SUNDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent. $$ ILZ069-074-291500- Clinton IL-Washington IL- 243 AM CDT Mon Jun 29 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Hot with highs in the mid 90s. South winds 10 to 15 mph. Heat index values up to 110. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 10 to 15 mph. Heat index values up to 109 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 112. .TUESDAY NIGHT...Clear with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 111 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. South winds around 5 mph. Heat index values up to 110. .WEDNESDAY NIGHT...Clear. Lows in the mid 70s. Heat index values up to 110 early in the evening. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 110. .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 110. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 70s. Heat index values up to 110 early in the evening. .INDEPENDENCE DAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. .SATURDAY 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. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 100. $$ ILZ070-291500- Marion IL- Including the cities of Centralia and Salem 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 107. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 106 early in the evening. .TUESDAY...Sunny with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 110. .TUESDAY NIGHT...Clear with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 108 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 106. .WEDNESDAY NIGHT...Clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Hot. Highs in the mid 90s. Lows in the mid 70s. Heat index values up to 110. .FRIDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .INDEPENDENCE DAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100. .SATURDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 30 percent. $$ MOZ074-084-085-099-291500- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 105. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 104 early in the evening. .TUESDAY...Sunny with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 105. .TUESDAY NIGHT...Clear. Lows in the lower 70s. South winds 5 to 10 mph. Heat index values up to 104 early in the evening. .WEDNESDAY...Sunny. Highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 104. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .FRIDAY...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. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 70s. Heat index values up to 100 early in the evening. .INDEPENDENCE DAY AND SATURDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms. Highs in the lower 90s. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 100. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. $$ MOZ060-291500- Warren MO- 243 AM CDT Mon Jun 29 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 108 this afternoon. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 107 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 107. .TUESDAY NIGHT...Clear. Lows in the lower 70s. South winds around 5 mph. Heat index values up to 107 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 107. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 110. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 70s. Heat index values up to 110 early in the evening. .FRIDAY THROUGH INDEPENDENCE DAY...Mostly clear. Highs in the mid 90s. Lows in the mid 70s. Heat index values up to 105. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105. $$ MOZ051-052-291500- Montgomery MO-Lincoln MO- 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Highs in the mid 90s. South winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 108. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph with gusts up to 25 mph. Heat index values up to 108 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 25 mph. Heat index values up to 107. .TUESDAY NIGHT...Clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 106. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 110. .THURSDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 110 early in the evening. .FRIDAY THROUGH INDEPENDENCE DAY...Mostly clear. Highs in the mid 90s. Lows in the mid 70s. Heat index values up to 105. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 70s. Heat index values up to 105 early in the evening. .SUNDAY...Mostly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs around 90. Chance of rain 30 percent. $$ ILZ058-059-098-099-291500- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Highs in the mid 90s. South winds 10 to 15 mph. Heat index values up to 108 this afternoon. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 10 to 15 mph. Heat index values up to 107 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 107. .TUESDAY NIGHT...Clear. Lows in the lower 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .THURSDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .FRIDAY...Sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .INDEPENDENCE DAY AND SATURDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 90s. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 105. .SUNDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent. $$ ILZ060-064-065-291500- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Highs in the lower 90s. South winds 10 to 15 mph. Heat index values up to 107. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 106 early in the evening. .TUESDAY...Sunny with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 109. .TUESDAY NIGHT...Clear with lows in the lower 70s. South winds 5 to 10 mph. Heat index values up to 108 early in the evening. .WEDNESDAY...Sunny with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 107. .WEDNESDAY NIGHT...Clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .THURSDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .THURSDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 110 early in the evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 105. .FRIDAY NIGHT...Partly cloudy. 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. .INDEPENDENCE DAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 105. .SATURDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent. $$ ILZ079-MOZ075-291500- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 243 AM CDT Mon Jun 29 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Sunny, hot with highs in the mid 90s. South winds 10 to 15 mph. Heat index values up to 109. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 108 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 110. .TUESDAY NIGHT...Clear with lows in the lower 70s. South winds 5 to 10 mph. Heat index values up to 112 early in the evening. .WEDNESDAY...Sunny, hot with highs in the upper 90s. South winds 5 to 10 mph. Heat index values up to 110. .WEDNESDAY NIGHT...Clear. Lows in the mid 70s. Heat index values up to 110 early in the evening. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 115. .FRIDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 110. .FRIDAY NIGHT AND INDEPENDENCE DAY...Partly cloudy. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 110. .SATURDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 100. $$ MOZ062-291500- Franklin MO- Including the cities of Washington, Union, and Sullivan 243 AM CDT Mon Jun 29 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 108. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 107 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 107. .TUESDAY NIGHT...Clear. Lows in the lower 70s. South winds around 5 mph. Heat index values up to 107 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 106. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 110. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 70s. Heat index values up to 110 early in the evening. .FRIDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. .FRIDAY NIGHT AND INDEPENDENCE DAY...Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105. $$ MOZ059-072-073-291500- Gasconade MO-Crawford MO-Washington MO- 243 AM CDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Sunny. Highs in the mid 90s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 105. .TONIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 104 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 104. .TUESDAY NIGHT...Clear. Lows in the mid 70s. South winds around 5 mph. Heat index values up to 104 early in the evening. .WEDNESDAY...Sunny, hot with highs in the mid 90s. South winds around 5 mph. Heat index values up to 104. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .FRIDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. .INDEPENDENCE DAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100. .SATURDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. $$ ILZ102-MOZ065-291500- Monroe IL-Jefferson MO- 243 AM CDT Mon Jun 29 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 10 PM CDT FRIDAY... .TODAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 110. .TONIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 108 early in the evening. .TUESDAY...Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 109. .TUESDAY NIGHT...Clear with lows in the mid 70s. South winds around 5 mph. Heat index values up to 111 early in the evening. .WEDNESDAY...Sunny, hot with highs in the upper 90s. South winds around 5 mph. Heat index values up to 109. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 110. .FRIDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 110. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 110 early in the evening. .INDEPENDENCE DAY...Sunny, hot with highs in the mid 90s. Heat index values up to 110. .SATURDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 110 early in the evening. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 100. $$