Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
492 FPUS53 KLSX 050134 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 833 PM CDT Thu Jun 4 2026 ILZ100-101-MOZ061-063-064-050900- 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 833 PM CDT Thu Jun 4 2026 .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the upper 60s. South winds 10 to 15 mph with gusts up to 25 mph. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy. Lows around 70. Southwest winds 10 to 15 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the lower 70s. Southwest winds around 5 mph. Chance of rain 20 percent. .SUNDAY...Mostly cloudy 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. .SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows around 70. Chance of rain 70 percent. .MONDAY...Showers with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows around 70. Chance of rain 70 percent. .TUESDAY...Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs around 90. Chance of rain 50 percent. Heat index values up to 100 in the afternoon. .TUESDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 100 early in the evening. .WEDNESDAY THROUGH THURSDAY...Partly cloudy with 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. $$ MOZ042-049-050-050900- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 833 PM CDT Thu Jun 4 2026 .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms this evening. Not as cool with lows in the upper 60s. South winds 5 to 10 mph with gusts up to 25 mph. Chance of rain 20 percent. .FRIDAY...Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. Southwest winds 10 to 15 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 40 percent. .SUNDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. .MONDAY...A chance of thunderstorms. Showers. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows around 70. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 105. $$ MOZ041-047-048-050900- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 833 PM CDT Thu Jun 4 2026 .TONIGHT...Partly cloudy. A slight chance of showers and thunderstorms this evening. Lows in the upper 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. .FRIDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning. Highs in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. South winds 5 to 10 mph with gusts up to 20 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 20 percent. .SUNDAY...Mostly cloudy with a chance of thunderstorms. Showers. Highs in the mid 80s. Chance of rain 80 percent. .SUNDAY NIGHT AND MONDAY...Showers likely with a chance of thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 70 percent. .MONDAY NIGHT...A chance of thunderstorms. Showers likely, mainly in the evening. Lows in the upper 60s. Chance of rain 70 percent. .TUESDAY...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 50 percent. Heat index values up to 105 in the afternoon. .TUESDAY NIGHT...Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the mid 90s. Lows in the lower 70s. Heat index values up to 105. $$ ILZ095>097-MOZ018-019-026-027-034>036-050900- 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 833 PM CDT Thu Jun 4 2026 .TONIGHT...Mostly clear this evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Not as cool with lows in the upper 60s. South winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent. .FRIDAY...Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 60s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SUNDAY AND SUNDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the upper 80s. Lows in the upper 60s. Chance of rain 70 percent. .MONDAY...A chance of thunderstorms. Showers. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50 percent. .TUESDAY...Partly 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 in the afternoon. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows around 70. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Hot. Lows in the lower 70s. Highs in the mid 90s. Heat index values up to 105. $$ ILZ069-070-074-050900- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 833 PM CDT Thu Jun 4 2026 .TONIGHT...Partly cloudy. Lows in the mid 60s. South winds 5 to 10 mph. .FRIDAY...Mostly sunny. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph. .FRIDAY NIGHT...Partly cloudy. Lows around 70. South winds 10 to 15 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 70s. Southwest winds around 5 mph. .SUNDAY...Mostly cloudy. 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 40 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 70s. Chance of rain 60 percent. .MONDAY...Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT...A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows around 70. Chance of rain 60 percent. .TUESDAY...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 40 percent. .TUESDAY 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 40 percent. .WEDNESDAY...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. Heat index values up to 100. .WEDNESDAY NIGHT AND THURSDAY...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 100. $$ MOZ074-084-085-099-050900- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 833 PM CDT Thu Jun 4 2026 .TONIGHT...Partly cloudy this evening, then becoming mostly cloudy. Not as cool with lows in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph. .FRIDAY...Mostly sunny. Highs in the mid 80s. South winds 5 to 10 mph with gusts up to 20 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. South winds 5 to 10 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 40 percent. .SUNDAY...Mostly cloudy. Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .SUNDAY NIGHT...Showers likely. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 70 percent. .MONDAY...Showers. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 90 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 50 percent. .TUESDAY 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 around 70. Chance of rain 50 percent. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. 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 thunderstorms in the evening. A slight chance of showers. Lows in the lower 70s. Chance of rain 20 percent. .THURSDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs around 90. Chance of rain 20 percent. $$ MOZ051-052-060-050900- Montgomery MO-Lincoln MO-Warren MO- 833 PM CDT Thu Jun 4 2026 .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Not as cool with lows in the upper 60s. South winds 5 to 10 mph with gusts up to 25 mph. .FRIDAY...Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 40 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. Southwest winds 5 to 10 mph with gusts up to 20 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers after midnight. Lows in the upper 60s. Southwest winds around 5 mph. Chance of rain 20 percent. .SUNDAY...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 70 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50 percent. .MONDAY...Showers with a chance of thunderstorms. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs around 90. Chance of rain 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows around 70. Chance of rain 20 percent. Heat index values up to 100 early in the evening. .WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear. 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. .THURSDAY...Mostly sunny. Highs in the mid 90s. Heat index values up to 105 in the afternoon. $$ ILZ058-059-098-099-050900- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 833 PM CDT Thu Jun 4 2026 .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the mid 60s. South winds 10 to 15 mph. .FRIDAY...Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. Southwest winds 5 to 10 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 60s. Southwest winds around 5 mph. Chance of rain 20 percent. .SUNDAY...Mostly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 60 percent. .MONDAY...A chance of thunderstorms. Showers. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT AND TUESDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 50 percent. .TUESDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 40 percent. .WEDNESDAY THROUGH THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs in the lower 90s. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 105. $$ ILZ060-064-065-050900- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 833 PM CDT Thu Jun 4 2026 .TONIGHT...Partly cloudy. Lows in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 60s. Southwest winds 10 to 15 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy with a slight chance of showers in the evening, then mostly cloudy after midnight. Lows in the upper 60s. Southwest winds around 5 mph. Chance of rain 20 percent. .SUNDAY...Mostly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 60 percent. .MONDAY...Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT...Showers likely. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 70 percent. .TUESDAY...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. .TUESDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows around 70. Chance of rain 50 percent. .WEDNESDAY THROUGH THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs around 90. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 100. $$ ILZ079-MOZ075-050900- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 833 PM CDT Thu Jun 4 2026 .TONIGHT...Partly cloudy. Lows in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph. .FRIDAY...Mostly sunny. Highs in the upper 80s. South winds 10 to 15 mph. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. South winds 5 to 10 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 40 percent. .SUNDAY...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 70 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 50 percent. .MONDAY...Showers with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 60 percent. .TUESDAY...Partly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 50 percent. .TUESDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows around 70. Chance of rain 50 percent. .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 100. .WEDNESDAY NIGHT AND THURSDAY...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 100. $$ MOZ059-062-072-073-050900- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 833 PM CDT Thu Jun 4 2026 .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Not as cool with lows in the upper 60s. South winds 5 to 10 mph with gusts up to 20 mph. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. South winds 5 to 10 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds around 5 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. South winds around 5 mph. Chance of rain 40 percent. .SUNDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. .MONDAY...Showers with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 50 percent. .TUESDAY 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 around 70. Chance of rain 50 percent. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 100 in the afternoon. .WEDNESDAY NIGHT...Mostly clear. 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. .THURSDAY...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. $$ ILZ102-MOZ065-050900- Monroe IL-Jefferson MO- 833 PM CDT Thu Jun 4 2026 .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Not as cool with lows in the upper 60s. South winds around 5 mph. Gusts up to 20 mph this evening. .FRIDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s. South winds 5 to 10 mph. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Southwest winds around 5 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. South winds around 5 mph. Chance of rain 30 percent. .SUNDAY AND SUNDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the upper 80s. Lows in the upper 60s. Chance of rain 70 percent. .MONDAY...Showers with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 80 percent. .MONDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 50 percent. .TUESDAY...Partly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 50 percent. Heat index values up to 100 in the afternoon. .TUESDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of rain 40 percent. Heat index values up to 100 early in the evening. .WEDNESDAY THROUGH THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Highs in the lower 90s. Lows in the lower 70s. Chance of rain 20 percent. Heat index values up to 105. $$