700
FPUS53 KLSX 010827
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
327 AM CDT Tue Sep 1 2026

ILZ100-101-MOZ061-063-064-011600-
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
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs around 100. Southwest winds around
5 mph.
.TONIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 104 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. South
winds 5 to 10 mph. Heat index values up to 104 early in the
evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph.
.THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Hot. Lows in the
upper 70s. Highs in the upper 90s. Heat index values up to 110.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Hot. Lows in the mid 70s. Highs in the
mid 90s. Chance of rain 20 percent. Heat index values up to 100.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the lower 70s.
.LABOR DAY...Mostly sunny. Highs in the lower 90s.

$$

MOZ042-049-050-011600-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph.
.TONIGHT...Mostly clear. Lows in the mid 70s. South winds around
5 mph.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. South
winds around 5 mph. Heat index values up to 100 early in the
evening.
.THURSDAY...Sunny, hot with highs in the mid 90s. Southwest winds
5 to 10 mph.
.THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the mid 90s. Heat index values up to 105.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly clear after
midnight. Lows in the lower 70s. Chance of rain 20 percent.
.SUNDAY...Sunny. Highs in the mid 90s.
.SUNDAY NIGHT AND LABOR DAY...Partly cloudy. Lows around 70.
Highs in the lower 90s.

$$

MOZ041-047-048-011600-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph.
.TONIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 101 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. South
winds around 5 mph. Heat index values up to 102 early in the
evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 105.
.THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Hot. Lows in the
upper 70s. Highs in the upper 90s. Heat index values up to 105.
.SATURDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the mid 70s. Chance of rain
20 percent. Heat index values up to 100 early in the evening.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Hot. Highs in the mid
90s. Lows in the lower 70s. Heat index values up to 100.
.LABOR DAY...Mostly sunny. Highs in the lower 90s.

$$

ILZ095>097-MOZ018-019-026-027-034>036-011600-
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
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph.
.TONIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 100 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph with gusts up to 20 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. South
winds around 5 mph. Heat index values up to 101 early in the
evening.
.THURSDAY...Sunny, hot with highs in the mid 90s. Southwest winds
5 to 10 mph. Heat index values up to 103.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Hot. Lows in
the upper 70s. Highs in the mid 90s. Heat index values up to 105.
.SATURDAY AND SATURDAY NIGHT...Partly cloudy. A slight chance of
showers and thunderstorms. Hot. Highs in the mid 90s. Lows in the
lower 70s. Chance of rain 20 percent. Heat index values up to
100.
.SUNDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the lower 90s. Chance of rain 20 percent.
.SUNDAY NIGHT AND LABOR DAY...Partly cloudy. Lows in the upper
60s. Highs around 90.

$$

ILZ069-070-074-011600-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 105.
.TONIGHT...Clear. Lows in the mid 70s. South winds around 5 mph.
Heat index values up to 103 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 105.
.WEDNESDAY NIGHT...Clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 103 early in the evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph. Heat index values up to 106.
.THURSDAY NIGHT...Clear. Lows in the upper 70s. Heat index values
up to 105 early in the evening.
.FRIDAY AND FRIDAY NIGHT...Mostly clear. Hot. Highs in the upper
90s. Lows in the mid 70s. Heat index values up to 110.
.SATURDAY...Sunny with a slight chance of showers and
thunderstorms. Hot with highs in the upper 90s. Chance of rain
20 percent.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Hot. Lows in the lower 70s. Highs in
the mid 90s. Chance of rain 20 percent. Heat index values up to
100.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows around 70.
.LABOR DAY...Sunny. Highs in the lower 90s.

$$

MOZ074-084-085-099-011600-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph.
.TONIGHT...Mostly clear. Lows in the lower 70s. South winds
around 5 mph. Heat index values up to 100 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the mid 90s. Southwest
winds around 5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 70s. South
winds around 5 mph.
.THURSDAY...Sunny. Highs in the mid 90s. Southwest winds around
5 mph.
.THURSDAY NIGHT THROUGH LABOR DAY...Mostly clear. Lows in the
lower 70s. Highs in the lower 90s. Heat index values up to 105.

$$

MOZ051-052-060-011600-
Montgomery MO-Lincoln MO-Warren MO-
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph.
.TONIGHT...Mostly clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 101 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. South
winds around 5 mph. Heat index values up to 103 early in the
evening.
.THURSDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 103.
.THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the mid 90s. Heat index values up to 105.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly clear after
midnight. Lows in the lower 70s. Chance of rain 20 percent.
.SUNDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 90s. Chance of
rain 20 percent.
.SUNDAY NIGHT...Mostly clear. Lows around 70.
.LABOR DAY...Mostly sunny. Highs in the lower 90s.

$$

ILZ058-059-098-099-011600-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs around 100. Southwest winds around
5 mph.
.TONIGHT...Mostly clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 102 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. South
winds around 5 mph. Heat index values up to 102 early in the
evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Hot. Lows in
the mid 70s. Highs in the upper 90s. Heat index values up to 105.
.SATURDAY AND SATURDAY NIGHT...Mostly clear. A slight chance of
showers and thunderstorms. Hot. Highs in the upper 90s. Lows in
the lower 70s. Chance of rain 20 percent. Heat index values up to
105.
.SUNDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 90s. Chance of
rain 20 percent.
.SUNDAY NIGHT AND LABOR DAY...Partly cloudy. Lows in the upper
60s. Highs in the lower 90s.

$$

ILZ060-064-065-011600-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 104.
.TONIGHT...Clear. Lows in the mid 70s. South winds around 5 mph.
Heat index values up to 102 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph. Heat index values up to 104.
.WEDNESDAY NIGHT...Clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 102 early in the evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph. Heat index values up to 105.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Hot. Lows in
the mid 70s. Highs in the upper 90s. Heat index values up to 105.
.SATURDAY...Sunny with a slight chance of showers and
thunderstorms. Hot with highs in the upper 90s. Chance of rain
20 percent.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the lower 70s. Highs in the
mid 90s. Chance of rain 20 percent.
.SUNDAY NIGHT AND LABOR DAY...Mostly clear. Lows in the upper
60s. Highs in the lower 90s.

$$

ILZ079-MOZ075-011600-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 105.
.TONIGHT...Clear. Lows in the mid 70s. South winds around 5 mph.
Heat index values up to 103 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 104.
.WEDNESDAY NIGHT...Clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 103 early in the evening.
.THURSDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 104.
.THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the upper 90s. Heat index values up to 110.
.SATURDAY NIGHT...Partly cloudy in the evening, then mostly clear
with 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.
.SUNDAY...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 100.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
around 70.
.LABOR DAY...Sunny. Highs in the lower 90s.

$$

MOZ059-062-072-073-011600-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph.
.TONIGHT...Mostly clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 100 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 103.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 101 early in the evening.
.THURSDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 103.
.THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Hot. Lows
in the lower 70s. Highs in the mid 90s. Heat index values up to
105.
.SUNDAY...Sunny. A slight chance of showers and thunderstorms in
the afternoon. Highs in the mid 90s. Chance of rain 20 percent.
.SUNDAY NIGHT AND LABOR DAY...Mostly clear. Lows in the upper
60s. Highs in the lower 90s.

$$

ILZ102-MOZ065-011600-
Monroe IL-Jefferson MO-
327 AM CDT Tue Sep 1 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT FRIDAY...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 106.
.TONIGHT...Clear. Lows in the mid 70s. South winds around 5 mph.
Heat index values up to 104 early in the evening.
.WEDNESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 106.
.WEDNESDAY NIGHT...Clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 104 early in the evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 105.
.THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the upper 90s. Heat index values up to 110.
.SATURDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers after midnight. Lows in the lower
70s. Chance of rain 20 percent. Heat index values up to 100 early
in the evening.
.SUNDAY AND SUNDAY NIGHT...Partly cloudy. Hot. Highs in the mid
90s. Lows around 70. Heat index values up to 105.
.LABOR DAY...Sunny. Highs in the lower 90s.

$$