522
FPUS53 KLSX 030627
ZFPLSX
ZONE FORECASTS
NATIONAL WEATHER SERVICE SAINT LOUIS MO
127 AM CDT THU SEP 3 2026
ILZ100-101-MOZ061-063-064-031400-
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
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
MOSTLY CLEAR. NEAR STEADY TEMPERATURE AROUND
80. SOUTH WINDS AROUND 5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST
WINDS 5 TO 10 MPH. HEAT INDEX VALUES UP TO 106.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 70S. SOUTH
WINDS AROUND 5 MPH. HEAT INDEX VALUES UP TO 104 EARLY IN THE
EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 107.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 70S. SOUTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE. HEAT
INDEX VALUES UP TO 105 EARLY IN THE EVENING.
SATURDAY THROUGH SUNDAY
MOSTLY CLEAR. HOT. HIGHS IN THE MID
90S. LOWS IN THE MID 70S. HEAT INDEX VALUES UP TO 110.
SUNDAY NIGHT THROUGH TUESDAY
MOSTLY CLEAR. HOT. LOWS AROUND
70. HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 100.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. HOT. LOWS IN THE MID
70S. HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 100.
MOZ042-049-050-031400-
AUDRAIN MO-OSAGE MO-CALLAWAY MO-
INCLUDING THE CITIES OF MEXICO AND FULTON
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
MOSTLY CLEAR. NEAR STEADY TEMPERATURE IN THE
UPPER 70S. SOUTH WINDS AROUND 5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE MID 90S. SOUTHWEST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 101 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE MID 90S. SOUTHWEST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 103 EARLY IN THE EVENING.
SATURDAY THROUGH SUNDAY
MOSTLY CLEAR. HOT. HIGHS IN THE MID
90S. LOWS IN THE LOWER 70S. HEAT INDEX VALUES UP TO 105.
SUNDAY NIGHT THROUGH TUESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
60S. HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 100.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S.
WEDNESDAY
SUNNY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. HIGHS IN THE MID 90S. CHANCE OF RAIN
20 PERCENT.
MOZ041-047-048-031400-
BOONE MO-MONITEAU MO-COLE MO-
INCLUDING THE CITIES OF COLUMBIA AND JEFFERSON CITY
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
MOSTLY CLEAR. NEAR STEADY TEMPERATURE IN THE
UPPER 70S. SOUTH WINDS AROUND 5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST
WINDS 5 TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 70S. SOUTH
WINDS AROUND 5 MPH. HEAT INDEX VALUES UP TO 104 EARLY IN THE
EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 107.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE. HEAT
INDEX VALUES UP TO 105 EARLY IN THE EVENING.
SATURDAY THROUGH TUESDAY NIGHT
MOSTLY CLEAR. HOT. HIGHS IN THE
UPPER 90S. LOWS IN THE MID 70S. HEAT INDEX VALUES UP TO 110.
WEDNESDAY
SUNNY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. HOT WITH HIGHS IN THE MID 90S. CHANCE OF RAIN
20 PERCENT.
ILZ095>097-MOZ018-019-026-027-034>036-031400-
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
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
MOSTLY CLEAR. NEAR STEADY TEMPERATURE IN THE
UPPER 70S. SOUTH WINDS AROUND 5 MPH.
THURSDAY
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 104.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 70S. SOUTH
WINDS AROUND 5 MPH. HEAT INDEX VALUES UP TO 102 EARLY IN THE
EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE MID 90S. SOUTHWEST WINDS
5 TO 10 MPH. HEAT INDEX VALUES UP TO 104.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE. HEAT
INDEX VALUES UP TO 103 EARLY IN THE EVENING.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLEAR. HOT. HIGHS IN THE
MID 90S. LOWS IN THE LOWER 70S. HEAT INDEX VALUES UP TO 105.
SUNDAY
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 100.
SUNDAY NIGHT THROUGH TUESDAY
MOSTLY CLEAR. LOWS AROUND 70.
HIGHS IN THE LOWER 90S.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S.
WEDNESDAY
MOSTLY SUNNY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 90S. CHANCE OF
RAIN 20 PERCENT.
ILZ069-070-074-031400-
CLINTON IL-MARION IL-WASHINGTON IL-
INCLUDING THE CITIES OF CENTRALIA AND SALEM
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
CLEAR. NEAR STEADY TEMPERATURE IN THE UPPER
70S. SOUTH WINDS AROUND 5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST
WINDS AROUND 5 MPH. HEAT INDEX VALUES UP TO 105.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 104 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 107.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. LIGHT AND
VARIABLE WINDS. HEAT INDEX VALUES UP TO 104 EARLY IN THE EVENING.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLEAR. HOT. HIGHS IN THE
UPPER 90S. LOWS IN THE LOWER 70S. HEAT INDEX VALUES UP TO 105.
SUNDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS IN THE MID 90S.
LOWS IN THE UPPER 60S. HEAT INDEX VALUES UP TO 100.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. HOT. LOWS IN THE MID
70S. HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 100.
MOZ074-084-085-099-031400-
SAINT FRANCOIS MO-IRON MO-MADISON MO-REYNOLDS MO-
INCLUDING THE CITY OF FARMINGTON
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
CLEAR. NEAR STEADY TEMPERATURE IN THE MID 70S.
LIGHT AND VARIABLE WINDS.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE MID 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 104.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE.
HEAT INDEX VALUES UP TO 101 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE MID 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 106.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. LIGHT AND
VARIABLE WINDS. HEAT INDEX VALUES UP TO 102 EARLY IN THE EVENING.
SATURDAY THROUGH WEDNESDAY
MOSTLY CLEAR. HIGHS IN THE MID 90S.
LOWS IN THE UPPER 60S. HEAT INDEX VALUES UP TO 105.
MOZ051-052-060-031400-
MONTGOMERY MO-LINCOLN MO-WARREN MO-
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE MID 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 105.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 104 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 105.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. LIGHT AND
VARIABLE WINDS. HEAT INDEX VALUES UP TO 104 EARLY IN THE EVENING.
SATURDAY
MOSTLY SUNNY. HOT WITH HIGHS IN THE MID 90S. HEAT
INDEX VALUES UP TO 105.
SATURDAY NIGHT THROUGH TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE
LOWER 70S. HIGHS IN THE LOWER 90S. HEAT INDEX VALUES UP TO 105.
WEDNESDAY
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 100.
ILZ058-059-098-099-031400-
GREENE IL-MACOUPIN IL-CALHOUN IL-JERSEY IL-
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
MOSTLY CLEAR. NEAR STEADY TEMPERATURE IN THE
UPPER 70S. SOUTH WINDS AROUND 5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST
WINDS 5 TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 102 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTHWEST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE.
HEAT INDEX VALUES UP TO 103 EARLY IN THE EVENING.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLEAR. HOT. HIGHS IN THE
MID 90S. LOWS IN THE LOWER 70S. HEAT INDEX VALUES UP TO 105.
SUNDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS IN THE LOWER 90S.
LOWS IN THE UPPER 60S.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S.
WEDNESDAY
SUNNY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. HOT WITH HIGHS IN THE MID 90S. CHANCE OF RAIN
20 PERCENT.
ILZ060-064-065-031400-
MONTGOMERY IL-BOND IL-FAYETTE IL-
INCLUDING THE CITIES OF LITCHFIELD AND VANDALIA
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
CLEAR. NEAR STEADY TEMPERATURE IN THE UPPER
70S. SOUTH WINDS AROUND 5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST
WINDS 5 TO 10 MPH. HEAT INDEX VALUES UP TO 104.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 102 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 105.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTHWEST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE.
HEAT INDEX VALUES UP TO 103 EARLY IN THE EVENING.
SATURDAY
SUNNY. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. HOT WITH HIGHS IN THE MID 90S. CHANCE OF RAIN
20 PERCENT. HEAT INDEX VALUES UP TO 105.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLEAR. LOWS IN THE LOWER 70S.
HIGHS IN THE LOWER 90S. HEAT INDEX VALUES UP TO 100.
SUNDAY NIGHT THROUGH TUESDAY
MOSTLY CLEAR. LOWS IN THE MID
60S. HIGHS IN THE LOWER 90S.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. HOT. LOWS IN THE
LOWER 70S. HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 100.
ILZ079-MOZ075-031400-
RANDOLPH IL-SAINTE GENEVIEVE MO-
INCLUDING THE CITIES OF CHESTER AND SPARTA
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
CLEAR. LOWS IN THE MID 70S. SOUTH WINDS AROUND
5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST
WINDS AROUND 5 MPH. HEAT INDEX VALUES UP TO 105.
THURSDAY NIGHT
CLEAR. LOWS IN THE MID 70S. SOUTH WINDS AROUND
5 MPH. HEAT INDEX VALUES UP TO 104 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 106.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE. HEAT
INDEX VALUES UP TO 104 EARLY IN THE EVENING.
SATURDAY
MOSTLY SUNNY. HOT WITH HIGHS IN THE MID 90S. HEAT
INDEX VALUES UP TO 110.
SATURDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS AROUND 70.
HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 105.
MOZ059-062-072-073-031400-
GASCONADE MO-FRANKLIN MO-CRAWFORD MO-WASHINGTON MO-
INCLUDING THE CITIES OF WASHINGTON, UNION, AND SULLIVAN
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
CLEAR. NEAR STEADY TEMPERATURE IN THE UPPER
70S. SOUTH WINDS AROUND 5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE MID 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 104.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 102 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE MID 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 105.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. LIGHT AND
VARIABLE WINDS. HEAT INDEX VALUES UP TO 103 EARLY IN THE EVENING.
SATURDAY THROUGH WEDNESDAY
MOSTLY CLEAR. HIGHS IN THE MID 90S.
LOWS AROUND 70. HEAT INDEX VALUES UP TO 110.
ILZ102-MOZ065-031400-
MONROE IL-JEFFERSON MO-
127 AM CDT THU SEP 3 2026
..EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY
REST OF TONIGHT
CLEAR. LOWS IN THE MID 70S. SOUTH WINDS AROUND
5 MPH.
THURSDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST
WINDS AROUND 5 MPH. HEAT INDEX VALUES UP TO 106.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 104 EARLY IN THE EVENING.
FRIDAY
SUNNY, HOT WITH HIGHS IN THE UPPER 90S. SOUTHWEST WINDS
AROUND 5 MPH. HEAT INDEX VALUES UP TO 108.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 70S. SOUTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE. HEAT
INDEX VALUES UP TO 105 EARLY IN THE EVENING.
SATURDAY
MOSTLY SUNNY. HOT WITH HIGHS IN THE UPPER 90S. HEAT
INDEX VALUES UP TO 110.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLEAR. HOT. LOWS IN THE LOWER
70S. HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 105.
SUNDAY NIGHT THROUGH TUESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
60S. HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 100.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. HOT. LOWS IN THE
LOWER 70S. HIGHS IN THE MID 90S. HEAT INDEX VALUES UP TO 105.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page