267 FPUS53 KLSX 190303 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 1003 PM CDT Thu Sep 18 2025 ILZ100-101-MOZ061-063-064-191100- 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 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Partly cloudy with a chance of showers with a slight chance of thunderstorms this evening, then mostly cloudy with a chance of thunderstorms with a slight chance of showers after midnight. Lows in the mid 60s. Northeast winds around 5 mph, becoming north around 5 mph after midnight. Chance of rain 50 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly sunny. A slight chance of showers and thunderstorms. Highs in the mid 80s. West winds around 5 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Patchy fog after midnight. Lows in the mid 60s. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 40 percent. .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 slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 60s. South winds around 5 mph. Chance of rain 40 percent. .SUNDAY...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then partly sunny with showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 60 percent. .SUNDAY NIGHT...A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of rain 70 percent. .MONDAY AND MONDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Lows in the mid 60s. Chance of rain 50 percent. .TUESDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers. Highs around 80. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 60s. Chance of rain 50 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A 40 percent chance of showers. Highs in the upper 70s. Lows around 60. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 40 percent. $$ MOZ042-049-050-191100- Audrain MO-Osage MO-Callaway MO- Including the cities of Mexico and Fulton 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Showers with a chance of thunderstorms this evening, then a chance of showers and thunderstorms after midnight. Some thunderstorms may be severe with damaging winds and large hail this evening. Lows in the lower 60s. Northwest winds around 5 mph, becoming southwest around 5 mph after midnight. Chance of rain near 100 percent. .FRIDAY...Partly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Southwest winds around 5 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear. A slight chance of showers in the evening. Patchy fog after midnight. Lows around 60. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent. .SATURDAY...Mostly sunny. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. South winds around 5 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the lower 60s. South winds around 5 mph. Chance of rain 50 percent. .SUNDAY AND SUNDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 70 percent. .MONDAY AND MONDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 50 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly sunny. A chance of showers and thunderstorms. Highs in the mid 70s. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers. Lows in the upper 50s. Chance of rain 50 percent. .WEDNESDAY...Partly sunny with a 40 percent chance of showers. Highs in the mid 70s. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. A 40 percent chance of showers. Lows in the mid 50s. Highs in the mid 70s. $$ MOZ041-047-048-191100- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Showers with a chance of thunderstorms this evening, then a chance of showers and thunderstorms after midnight. Patchy fog after midnight. Some thunderstorms may produce damaging winds and large hail this evening. Lows in the lower 60s. Southwest winds 5 to 10 mph. Chance of rain near 100 percent. .FRIDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 80s. Southwest winds around 5 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear. Patchy fog after midnight. Lows around 60. Southwest winds around 5 mph in the evening, becoming light and variable. .SATURDAY...Mostly sunny. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. South winds around 5 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers. Lows in the lower 60s. South winds around 5 mph. Chance of rain 50 percent. .SUNDAY AND SUNDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 70 percent. .MONDAY AND MONDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 50 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly sunny. A chance of thunderstorms. A chance of showers. Highs in the mid 70s. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers. Lows around 60. Chance of rain 50 percent. .WEDNESDAY...Partly sunny with a 40 percent chance of showers. Highs in the mid 70s. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. A 40 percent chance of showers. Lows in the upper 50s. Highs in the mid 70s. $$ ILZ095>097-MOZ018-019-026-027-034>036-191100- 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 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Mostly cloudy with a chance of thunderstorms. Showers likely, mainly this evening. Lows in the lower 60s. West winds 5 to 10 mph. Chance of rain 70 percent. .FRIDAY...Mostly cloudy in the morning, then becoming mostly sunny. A slight chance of showers and thunderstorms. Highs in the lower 80s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. Patchy fog after midnight. Lows around 60. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent. .SATURDAY...Mostly sunny. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. South winds around 5 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the lower 60s. South winds around 5 mph. Chance of rain 50 percent. .SUNDAY AND SUNDAY NIGHT...Showers likely with a chance of thunderstorms. Highs around 80. Lows in the lower 60s. Chance of rain 70 percent. .MONDAY...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. .MONDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 40 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly sunny. A chance of thunderstorms. A chance of showers. Highs in the mid 70s. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows around 60. Chance of rain 50 percent. .WEDNESDAY...Partly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of showers. Lows in the upper 50s. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. $$ ILZ069-070-074-191100- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the lower 60s. East winds around 5 mph. .FRIDAY...Partly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. East winds around 5 mph, becoming southwest around 5 mph in the afternoon. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Southwest winds around 5 mph, becoming east after midnight. Chance of rain 40 percent. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. South winds around 5 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. South winds around 5 mph. Chance of rain 20 percent. .SUNDAY...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. .SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of rain 60 percent. .MONDAY AND MONDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Lows in the mid 60s. Chance of rain 50 percent. .TUESDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 40 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers. Lows in the lower 60s. Chance of rain 40 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A 40 percent chance of showers. Highs around 80. Lows around 60. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. $$ MOZ074-084-085-099-191100- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Mostly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 60s. Southwest winds around 5 mph, becoming north around 5 mph after midnight. Chance of rain 20 percent. .FRIDAY...Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Northwest winds around 5 mph, becoming southwest around 5 mph in the afternoon. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then clearing. A chance of thunderstorms in the evening. A chance of showers. Patchy fog after midnight. Lows in the lower 60s. Northwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 30 percent. .SATURDAY...Mostly sunny. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Light and variable winds, becoming southwest around 5 mph in the afternoon. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the lower 60s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 30 percent. .SUNDAY THROUGH MONDAY...Showers likely with a chance of thunderstorms. Highs in the mid 80s. Lows in the lower 60s. Chance of rain 60 percent. .MONDAY NIGHT AND TUESDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Highs around 80. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers. Lows around 60. Chance of rain 50 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A 40 percent chance of showers. Highs in the upper 70s. Lows in the upper 50s. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 40 percent. $$ MOZ051-052-060-191100- Montgomery MO-Lincoln MO-Warren MO- 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Mostly cloudy with a chance of thunderstorms. Showers, mainly this evening. Lows in the lower 60s. Northwest winds 5 to 10 mph. Chance of rain 80 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly sunny. A slight chance of showers and thunderstorms. Cooler with highs in the lower 80s. Southwest winds around 5 mph. Chance of rain 20 percent. .FRIDAY NIGHT...A slight chance of thunderstorms in the evening. Mostly clear with a slight chance of showers. Patchy fog after midnight. Lows around 60. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent. .SATURDAY...Mostly sunny. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. South winds around 5 mph. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the lower 60s. South winds around 5 mph. Chance of rain 40 percent. .SUNDAY AND SUNDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 70 percent. .MONDAY AND MONDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 50 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly sunny. A chance of showers and thunderstorms. Highs in the upper 70s. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows around 60. Chance of rain 50 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A 40 percent chance of showers. Highs in the mid 70s. Lows in the upper 50s. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 40 percent. $$ ILZ058-059-098-099-191100- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Partly cloudy this evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the mid 60s. East winds around 5 mph, becoming north around 5 mph after midnight. Chance of rain 50 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly sunny. A slight chance of showers and thunderstorms. Cooler with highs in the lower 80s. Northwest winds around 5 mph, becoming southwest around 5 mph in the afternoon. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Patchy fog after midnight. Lows in the lower 60s. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 50 percent. .SATURDAY...Mostly sunny. Highs in the mid 80s. South winds around 5 mph. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 60s. South winds around 5 mph. Chance of rain 40 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 lower 80s. Chance of rain 50 percent. .SUNDAY NIGHT...Showers likely with a chance of thunderstorms. Lows in the lower 60s. Chance of rain 70 percent. .MONDAY...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. .MONDAY NIGHT AND TUESDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Highs in the upper 70s. Chance of rain 40 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the evening. Lows in the lower 60s. Chance of rain 40 percent. .WEDNESDAY...Partly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of showers. Lows in the upper 50s. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. $$ ILZ060-064-065-191100- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the lower 60s. East winds around 5 mph. .FRIDAY...Partly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. East winds around 5 mph, becoming southwest in the afternoon. Chance of rain 20 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Southwest winds around 5 mph, becoming east after midnight. Chance of rain 50 percent. .SATURDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the upper 80s. Southeast winds around 5 mph, becoming south around 5 mph in the afternoon. Chance of rain 20 percent. .SATURDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 60s. South winds around 5 mph. Chance of rain 20 percent. .SUNDAY...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 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 lower 60s. Chance of rain 60 percent. .MONDAY AND MONDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Lows in the lower 60s. Chance of rain 50 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly sunny. A chance of showers and thunderstorms. Highs around 80. Chance of rain 40 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the evening. Lows in the lower 60s. Chance of rain 40 percent. .WEDNESDAY...Partly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of showers. Lows in the upper 50s. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. $$ ILZ079-MOZ075-191100- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Partly cloudy this evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Southeast winds around 5 mph, becoming northwest after midnight. Chance of rain 20 percent. .FRIDAY...Mostly cloudy with a slight chance of showers in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Northwest winds around 5 mph, becoming southwest in the afternoon. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Patchy fog after midnight. Lows in the lower 60s. Northwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 30 percent. .SATURDAY...Patchy fog in the morning. Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Light and variable winds, becoming southwest around 5 mph in the afternoon. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Southwest winds around 5 mph. Chance of rain 20 percent. .SUNDAY...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. .SUNDAY NIGHT AND MONDAY...Showers likely with a chance of thunderstorms. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 60 percent. .MONDAY NIGHT AND TUESDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Highs in the lower 80s. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers. Lows in the lower 60s. Chance of rain 50 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A 40 percent chance of showers. Highs in the upper 70s. Lows around 60. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 40 percent. $$ MOZ059-062-072-073-191100- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. West winds around 5 mph. Chance of rain 50 percent. .FRIDAY...Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Cooler with highs in the mid 80s. Southwest winds around 5 mph. Chance of rain 30 percent. .FRIDAY NIGHT...Mostly clear. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Patchy fog after midnight. Lows around 60. Southwest winds around 5 mph in the evening, becoming light and variable. Chance of rain 30 percent. .SATURDAY...Mostly sunny. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Light and variable winds, becoming southwest around 5 mph in the afternoon. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the lower 60s. South winds around 5 mph. Chance of rain 40 percent. .SUNDAY THROUGH MONDAY...Showers likely with a chance of thunderstorms. Highs in the mid 80s. Lows in the mid 60s. Chance of rain 70 percent. .MONDAY NIGHT AND TUESDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Highs in the upper 70s. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows around 60. Chance of rain 50 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A 40 percent chance of showers. Highs in the upper 70s. Lows in the upper 50s. .THURSDAY...Mostly sunny with a 40 percent chance of showers. Highs in the upper 70s. $$ ILZ102-MOZ065-191100- Monroe IL-Jefferson MO- 1003 PM CDT Thu Sep 18 2025 .TONIGHT...Partly cloudy this evening, then becoming mostly cloudy. A chance of showers. A slight chance of thunderstorms this evening, then a chance of thunderstorms after midnight. Lows in the mid 60s. Southwest winds around 5 mph, becoming northwest around 5 mph after midnight. Chance of rain 30 percent. .FRIDAY...Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Not as warm with highs in the mid 80s. West winds around 5 mph. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Patchy fog after midnight. Lows in the lower 60s. West winds around 5 mph in the evening, becoming light and variable. Chance of rain 30 percent. .SATURDAY...Mostly sunny. Patchy fog in the morning. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Light and variable winds, becoming southwest around 5 mph in the afternoon. Chance of rain 20 percent. .SATURDAY NIGHT...Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Southwest winds around 5 mph. Chance of rain 30 percent. .SUNDAY THROUGH MONDAY...Showers likely with a chance of thunderstorms. Highs in the upper 80s. Lows in the mid 60s. Chance of rain 60 percent. .MONDAY NIGHT AND TUESDAY...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Highs around 80. Chance of rain 50 percent. .TUESDAY NIGHT...Mostly cloudy with a slight chance of thunderstorms. A chance of showers. Lows in the lower 60s. Chance of rain 50 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A 40 percent chance of showers. Highs in the upper 70s. Lows in the upper 50s. .THURSDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 40 percent. $$