Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
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510 FPUS53 KLSX 081828 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 128 PM CDT Sat Aug 8 2026 ILZ100-101-MOZ061-063-064-090200- 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 128 PM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...Sunny. Near steady temperature in the upper 80s. South winds around 5 mph. .TONIGHT...Clear with lows in the lower 70s. South winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 10 to 15 mph. Heat index values up to 104. .SUNDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 103 early in the evening. .MONDAY...Mostly sunny. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 111 in the afternoon. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. .TUESDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy. 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. .WEDNESDAY...Partly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 105 early in the evening. .THURSDAY AND THURSDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the mid 80s. Lows around 70. Chance of rain 60 percent. .FRIDAY...Partly sunny with a chance of showers in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. $$ MOZ049-050-090200- Osage MO-Callaway MO- Including the city of Fulton 128 PM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...Sunny. Highs around 90. Southeast winds around 5 mph. .TONIGHT...Mostly clear. Lows in the lower 70s. Southeast winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 102. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 100 early in the evening. .MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 107 in the afternoon. .MONDAY NIGHT AND TUESDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the lower 70s. Chance of rain 50 percent. .THURSDAY...Showers likely with a slight chance of thunderstorms in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 60 percent. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 50 percent. $$ MOZ042-090200- Audrain MO- Including the city of Mexico 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Near steady temperature in the mid 80s. Southeast winds around 5 mph. .TONIGHT...Clear in the evening, then becoming partly cloudy. Lows in the lower 70s. Southeast winds 5 to 10 mph. .SUNDAY...Mostly sunny. Humid with highs in the lower 90s. South winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 101. .SUNDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. South winds around 10 mph with gusts up to 20 mph. Heat index values up to 101 early in the evening. .MONDAY...Sunny with highs in the lower 90s. Southwest winds 10 to 15 mph. Heat index values up to 104. .MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows in the mid 70s. Highs in the lower 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy in the evening, then mostly 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. .WEDNESDAY...Mostly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the upper 80s. Chance of rain 30 percent. .WEDNESDAY NIGHT...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. Lows around 70. Chance of rain 50 percent. .THURSDAY AND THURSDAY NIGHT...Showers likely with a chance of thunderstorms. Highs around 80. Lows in the mid 60s. Chance of rain 60 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 50 percent. $$ MOZ041-047-048-090200- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 128 PM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...Sunny. Highs around 90. Southeast winds around 5 mph. .TONIGHT...Mostly clear. Lows in the lower 70s. Southeast winds 5 to 10 mph. .SUNDAY...Sunny, hot with highs in the mid 90s. South winds 10 to 15 mph. Heat index values up to 103. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 101 early in the evening. .MONDAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 108 in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 100 early in the evening. .THURSDAY...A chance of thunderstorms. Showers likely, mainly in the morning. Highs in the mid 80s. Chance of rain 60 percent. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows around 70. Highs in the mid 80s. Chance of rain 50 percent. $$ ILZ095>097-MOZ018-019-026-027-034>036-090200- 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 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Near steady temperature in the mid 80s. Southeast winds around 5 mph. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 70s. Southeast winds 5 to 10 mph. .SUNDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Humid with highs in the lower 90s. South winds 10 to 15 mph. Gusts up to 30 mph in the afternoon. Chance of rain 20 percent. Heat index values up to 104 in the afternoon. .SUNDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 25 mph. Heat index values up to 103 early in the evening. .MONDAY...Mostly sunny. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 106 in the afternoon. .MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows in the mid 70s. Highs in the lower 90s. Heat index values up to 105. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the mid 70s. Highs in the upper 80s. Chance of rain 50 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of rain 50 percent. .THURSDAY...Showers likely with a slight chance of thunderstorms in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 70 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 60 percent. .FRIDAY...Partly 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 70s. Chance of rain 50 percent. $$ ILZ069-074-090200- Clinton IL-Washington IL- 128 PM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...Sunny. Near steady temperature in the upper 80s. Southwest winds around 5 mph. .TONIGHT...Mostly clear. Humid with lows in the lower 70s. South winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 10 to 15 mph. Heat index values up to 104. .SUNDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 101 early in the evening. .MONDAY...Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 111 in the afternoon. .MONDAY NIGHT AND TUESDAY...Mostly clear. Hot. Lows in the upper 70s. Highs in the mid 90s. Heat index values up to 110. .TUESDAY 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. .WEDNESDAY...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. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 105 early in the evening. .THURSDAY...Partly 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 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows around 70. Chance of rain 60 percent. .FRIDAY...Partly sunny with a chance of showers in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. $$ ILZ070-090200- Marion IL- Including the cities of Centralia and Salem 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Near steady temperature in the upper 80s. Southwest winds around 5 mph. .TONIGHT...Mostly clear. Lows around 70. South winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 101. .SUNDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. .MONDAY...Mostly sunny. Humid with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 106 in the afternoon. .MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .TUESDAY 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 100 early in the evening. .WEDNESDAY...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 40 percent. Heat index values up to 100. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 60 percent. .FRIDAY...Partly sunny with a chance of showers in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40 percent. $$ MOZ074-084-085-099-090200- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Highs in the upper 80s. South winds around 5 mph. .TONIGHT...Clear. Lows in the upper 60s. South winds around 5 mph. .SUNDAY...Sunny with highs around 90. South winds 5 to 10 mph. Heat index values up to 101. .SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds 5 to 10 mph. .MONDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 105. .MONDAY NIGHT THROUGH TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy with a chance of thunderstorms. A chance of showers. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 100 early in the evening. .THURSDAY AND THURSDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent. .FRIDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the upper 80s. Chance of rain 50 percent. $$ MOZ051-060-090200- Montgomery MO-Warren MO- 128 PM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...Sunny. Highs in the upper 80s. Southeast winds around 5 mph. .TONIGHT...Mostly clear. Humid with lows around 70. Southeast winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 104. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 103 early in the evening. .MONDAY...Sunny with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 108 in the afternoon. .MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows around 70. Chance of rain 50 percent. Heat index values up to 105 early in the evening. .THURSDAY AND THURSDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the lower 80s. Lows in the upper 60s. Chance of rain 60 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. $$ MOZ052-090200- Lincoln MO- 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Highs around 90. South winds around 5 mph. .TONIGHT...Clear with lows in the lower 70s. Southeast winds around 5 mph. .SUNDAY...Mostly sunny. Humid with highs in the lower 90s. South winds 10 to 15 mph. Heat index values up to 104. .SUNDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 104 early in the evening. .MONDAY...Mostly sunny. Humid with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 108 in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 105 early in the evening. .THURSDAY AND THURSDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the lower 80s. Lows in the upper 60s. Chance of rain 60 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. $$ ILZ058-059-098-099-090200- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Near steady temperature in the upper 80s. Southwest winds around 5 mph. .TONIGHT...Mostly clear. Lows around 70. Southeast winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 10 to 15 mph. Heat index values up to 102. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 10 to 15 mph. Heat index values up to 102 early in the evening. .MONDAY...Mostly sunny. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Heat index values up to 106 in the afternoon. .MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows in the mid 70s. Highs in the lower 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy in the evening, then mostly 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. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs around 90. Lows in the upper 60s. Chance of rain 50 percent. Heat index values up to 100. .THURSDAY AND THURSDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the lower 80s. Lows in the mid 60s. Chance of rain 60 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. $$ ILZ060-064-065-090200- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Near steady temperature in the upper 80s. Southwest winds around 5 mph. .TONIGHT...Mostly clear. Lows in the upper 60s. South winds around 5 mph. .SUNDAY...Sunny with highs around 90. South winds 10 to 15 mph. Heat index values up to 102. .SUNDAY NIGHT...Mostly clear. Humid with lows in the lower 70s. South winds 10 to 15 mph. .MONDAY...Mostly sunny. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Heat index values up to 107 in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .TUESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent. Heat index values up to 100. .THURSDAY...Mostly sunny in the morning, then becoming mostly cloudy. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Showers likely. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 60 percent. .FRIDAY...Partly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent. $$ ILZ079-090200- Randolph IL- Including the cities of Chester and Sparta 128 PM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...Sunny. Near steady temperature in the upper 80s. South winds around 5 mph. .TONIGHT...Clear with lows around 70. South winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 105. .SUNDAY NIGHT...Mostly clear. Humid with lows in the lower 70s. South winds 5 to 10 mph. Heat index values up to 102 early in the evening. .MONDAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 111. .MONDAY NIGHT AND TUESDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the upper 90s. Heat index values up to 110. .TUESDAY 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. .WEDNESDAY...Mostly 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. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 105 early in the evening. .THURSDAY AND THURSDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent. .FRIDAY...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. $$ MOZ075-090200- Sainte Genevieve MO- 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Highs around 90. South winds around 5 mph. .TONIGHT...Clear with lows around 70. South winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 104. .SUNDAY NIGHT...Mostly clear. Humid with lows in the lower 70s. South winds 5 to 10 mph. Heat index values up to 101 early in the evening. .MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 110 in the afternoon. .MONDAY NIGHT AND TUESDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy with a chance of thunderstorms. A chance of showers. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 100 early in the evening. .THURSDAY AND THURSDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent. .FRIDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the mid 80s. Chance of rain 50 percent. $$ MOZ059-062-090200- Gasconade MO-Franklin MO- Including the cities of Washington, Union, and Sullivan 128 PM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...Sunny. Highs around 90. Southeast winds around 5 mph. .TONIGHT...Clear. Lows around 70. Southeast winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 104. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 102 early in the evening. .MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 109 in the afternoon. .MONDAY NIGHT AND TUESDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...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. .WEDNESDAY NIGHT...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. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 100 early in the evening. .THURSDAY...Showers likely with a slight chance of thunderstorms in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 60 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 50 percent. .FRIDAY...Partly 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 50 percent. $$ MOZ072-073-090200- Crawford MO-Washington MO- 128 PM CDT Sat Aug 8 2026 .THIS AFTERNOON...Sunny. Highs around 90. South winds around 5 mph. .TONIGHT...Clear. Lows around 70. South winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 102. .SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. .MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the morning. Heat index values up to 106. .MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Heat index values up to 100 early in the evening. .WEDNESDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy with a chance of thunderstorms. A chance of showers. Lows in the lower 70s. Chance of rain 40 percent. .THURSDAY AND THURSDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent. .FRIDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the mid 80s. Chance of rain 50 percent. $$ ILZ102-MOZ065-090200- Monroe IL-Jefferson MO- 128 PM CDT Sat Aug 8 2026 ...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...Sunny. Highs in the lower 90s. South winds around 5 mph. Heat index values up to 100. .TONIGHT...Clear with lows around 70. South winds around 5 mph. .SUNDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 106. .SUNDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 103 early in the evening. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 111. .MONDAY NIGHT AND TUESDAY...Mostly clear. Hot. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 110. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. .WEDNESDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 30 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 105 early in the evening. .THURSDAY...Becoming mostly cloudy in the afternoon. A chance of thunderstorms. Showers likely, mainly in the morning. Highs in the mid 80s. Chance of rain 60 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Lows around 70. Chance of rain 50 percent. .FRIDAY...Partly sunny with a chance of showers in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. $$