Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
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606 FPUS53 KLSX 262304 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 603 PM CDT Sun Jul 26 2026 ILZ100-101-MOZ061-063-064-270700- 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 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Partly cloudy this evening, then becoming mostly cloudy. Lows in the upper 70s. West winds around 5 mph, becoming southeast after midnight. Heat index values up to 116 early this evening. .MONDAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 113. .MONDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. West winds 5 to 10 mph. Heat index values up to 112 early in the evening. .TUESDAY...Sunny with highs in the lower 90s. North winds 5 to 10 mph. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows around 70. Northeast winds 5 to 10 mph. Heat index values up to 100 early in the evening. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper 80s. Lows in the upper 60s. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows around 70. Chance of rain 30 percent. .FRIDAY...Partly sunny. A chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. .FRIDAY NIGHT...A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s. Highs in the mid 80s. $$ MOZ042-049-050-270700- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 111 early this evening. .MONDAY...Mostly sunny. Hot with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 107. .MONDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. West winds 5 to 10 mph. Heat index values up to 106 early in the evening. .TUESDAY...Mostly sunny. Humid with highs in the lower 90s. North winds 5 to 10 mph. Heat index values up to 103. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. Northeast winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the upper 60s. .THURSDAY...Mostly sunny. Highs around 90. .THURSDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows around 70. Chance of rain 50 percent. .FRIDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny. A slight chance of showers in the morning. Highs in the lower 80s. Chance of rain 20 percent. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ MOZ041-047-048-270700- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 112 early this evening. .MONDAY...Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 109. .MONDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph. Heat index values up to 109 early in the evening. .TUESDAY...Mostly sunny. Humid with highs in the mid 90s. North winds around 5 mph. Heat index values up to 104. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. East winds around 5 mph. Heat index values up to 101 early in the evening. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the lower 90s. Lows in the upper 60s. .THURSDAY...Mostly sunny. Highs in the lower 90s. .THURSDAY NIGHT...Mostly 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 50 percent. .FRIDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 40 percent. .SATURDAY...Mostly sunny. Highs in the mid 80s. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s. Highs in the mid 80s. $$ ILZ095>097-MOZ018-019-026-027-034>036-270700- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Partly cloudy. Lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 113 early this evening. .MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 109. .MONDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. West winds 5 to 10 mph with gusts up to 20 mph, becoming northwest after midnight. Heat index values up to 109 early in the evening. .TUESDAY...Mostly sunny. Humid with highs in the upper 80s. North winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows in the upper 60s. Northeast winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the upper 80s. Lows in the upper 60s. .THURSDAY...Mostly sunny. Highs in the upper 80s. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Highs in the lower 80s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 20 percent. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ ILZ069-074-270700- Clinton IL-Washington IL- 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Partly cloudy with a chance of showers and thunderstorms this evening, then mostly cloudy after midnight. Lows in the mid 70s. Southwest winds around 5 mph, becoming southeast after midnight. Chance of rain 50 percent. Heat index values up to 116 early this evening. .MONDAY...Sunny, hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 116. .MONDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 114 early in the evening. .TUESDAY...Sunny with highs in the lower 90s. North winds 5 to 10 mph. Heat index values up to 106. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. Northeast winds 5 to 10 mph. Heat index values up to 100 early in the evening. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY...Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40 percent. .FRIDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 60s. Chance of rain 20 percent. .SUNDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ ILZ070-270700- Marion IL- Including the cities of Centralia and Salem 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...SEVERE THUNDERSTORM WATCH 516 IN EFFECT UNTIL MIDNIGHT CDT TONIGHT... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Partly cloudy with a chance of showers and thunderstorms this evening, then mostly cloudy after midnight. Patchy fog after midnight. Some thunderstorms may be severe with damaging winds and large hail. Lows in the mid 70s. West winds around 5 mph, becoming southeast after midnight. Chance of rain 50 percent. Heat index values up to 113 early this evening. .MONDAY...Patchy fog in the morning. Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 112. .MONDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 109 early in the evening. .TUESDAY...Sunny with highs around 90. North winds 5 to 10 mph. Heat index values up to 100. .TUESDAY NIGHT...Mostly clear. Cooler with lows in the upper 60s. North winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Clear. Highs in the mid 80s. Lows in the mid 60s. .THURSDAY...Sunny. Highs in the upper 80s. .THURSDAY NIGHT...Partly cloudy. A slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY...Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40 percent. .FRIDAY NIGHT...A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. .SUNDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ074-084-085-099-270700- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 110 early this evening. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 108. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 105 early in the evening. .TUESDAY...Sunny, hot with highs in the mid 90s. Northwest winds around 5 mph. Heat index values up to 108. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. Northeast winds around 5 mph. Heat index values up to 102 early in the evening. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. .FRIDAY 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. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 60s. .SUNDAY...Sunny. Highs in the mid 80s. $$ MOZ051-052-060-270700- Montgomery MO-Lincoln MO-Warren MO- 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 114 early this evening. .MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 110. .MONDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. West winds around 5 mph. Heat index values up to 109 early in the evening. .TUESDAY...Mostly sunny. Humid with highs in the lower 90s. North winds around 5 mph. Heat index values up to 103. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows around 70. Northeast winds around 5 mph. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .THURSDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 40 percent. .FRIDAY...Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. .FRIDAY NIGHT...A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ ILZ058-059-098-099-270700- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph, becoming southeast after midnight. Heat index values up to 113 early this evening. .MONDAY...Sunny with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 111. .MONDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph, becoming west after midnight. Heat index values up to 108 early in the evening. .TUESDAY...Sunny with highs in the upper 80s. North winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows in the upper 60s. Northeast winds 5 to 10 mph. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .THURSDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 40 percent. .FRIDAY...Partly sunny. A chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. .FRIDAY NIGHT...A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ ILZ065-270700- Fayette IL- Including the city of Vandalia 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...SEVERE THUNDERSTORM WATCH 516 IN EFFECT UNTIL MIDNIGHT CDT TONIGHT... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Mostly cloudy. A chance of showers and thunderstorms this evening. Patchy fog after midnight. Some thunderstorms may be severe with damaging winds and large hail. Lows in the mid 70s. Southwest winds around 5 mph. Chance of rain 50 percent. Heat index values up to 111 early this evening. .MONDAY...Patchy fog in the morning. Mostly sunny. Humid with highs in the mid 90s. South winds 5 to 10 mph. Heat index values up to 112. .MONDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph, becoming west after midnight. Heat index values up to 109 early in the evening. .TUESDAY...Sunny with highs in the upper 80s. North winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Cooler with lows in the mid 60s. North winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Clear. Highs in the mid 80s. Lows in the mid 60s. .THURSDAY...Sunny. Highs in the mid 80s. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY...Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40 percent. .FRIDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s. Highs in the mid 80s. $$ ILZ060-064-270700- Montgomery IL-Bond IL- Including the city of Litchfield 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Mostly cloudy. A chance of showers and thunderstorms this evening. Lows in the mid 70s. West winds around 5 mph, becoming southeast after midnight. Chance of rain 40 percent. Heat index values up to 114 early this evening. .MONDAY...Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 112. .MONDAY NIGHT...Mostly clear. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph, becoming west after midnight. Heat index values up to 110 early in the evening. .TUESDAY...Sunny with highs in the upper 80s. North winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Cooler with lows in the mid 60s. North winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs in the mid 80s. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms. Highs in the lower 80s. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ ILZ079-MOZ075-270700- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms this evening. Lows in the mid 70s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 115 early this evening. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 113. .MONDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 112 early in the evening. .TUESDAY...Sunny with highs in the lower 90s. Northwest winds 5 to 10 mph. Heat index values up to 108. .TUESDAY NIGHT...Partly cloudy. Lows around 70. Northeast winds 5 to 10 mph. Heat index values up to 103 early in the evening. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper 80s. Lows in the mid 60s. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the upper 60s. Chance of rain 20 percent. .FRIDAY...Partly sunny. A chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. .SUNDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ059-062-072-073-270700- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 111 early this evening. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 109. .MONDAY NIGHT...Mostly clear. Lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 107 early in the evening. .TUESDAY...Mostly sunny. Humid with highs in the mid 90s. Northwest winds around 5 mph. Heat index values up to 105. .TUESDAY NIGHT...Partly cloudy. Lows around 70. Northeast winds around 5 mph. Heat index values up to 100 early in the evening. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs around 90. Lows in the mid 60s. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. 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 40 percent. .FRIDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. .FRIDAY 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. .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. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s. Highs in the mid 80s. $$ ILZ102-MOZ065-270700- Monroe IL-Jefferson MO- 603 PM CDT Sun Jul 26 2026 ...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT MONDAY... ...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING... .TONIGHT...Partly cloudy. Lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 114 early this evening. .MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 112. .MONDAY NIGHT...Mostly clear. Humid with lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 111 early in the evening. .TUESDAY...Mostly sunny. Humid with highs in the lower 90s. Northwest winds 5 to 10 mph. Heat index values up to 108. .TUESDAY NIGHT...Partly cloudy. Lows around 70. Northeast winds 5 to 10 mph. Heat index values up to 103 early in the evening. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs around 90. Lows in the mid 60s. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent. .FRIDAY...Partly sunny. A chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. .FRIDAY NIGHT...A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 50 percent. .SATURDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s. Highs in the mid 80s. $$