991
FPUS53 KLSX 302233
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
533 PM CDT Sun Aug 30 2026

ILZ100-101-MOZ061-063-064-310600-
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
533 PM CDT Sun Aug 30 2026

...EXTREME HEAT WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH
FRIDAY EVENING...

.TONIGHT...Mostly clear. Lows in the lower 70s. South winds 5 to
10 mph.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
5 to 10 mph. Heat index values up to 101 early in the evening.
.TUESDAY...Sunny, hot with highs around 100. Southwest winds
around 5 mph. Heat index values up to 107.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 103 early in the evening.
.WEDNESDAY THROUGH THURSDAY NIGHT...Mostly clear. Hot. Highs in
the upper 90s. Lows in the upper 70s. Heat index values up to
105.
.FRIDAY...Sunny. A slight chance of showers in the morning. Hot
with highs in the upper 90s. Chance of rain 20 percent. Heat
index values up to 105.
.FRIDAY NIGHT...Partly cloudy with a slight chance of showers and
thunderstorms in the evening, then mostly clear after midnight.
Lows in the mid 70s. Chance of rain 20 percent. Heat index values
up to 105 early in the evening.
.SATURDAY...Sunny. A slight chance of showers in the morning.
Highs in the mid 90s. Chance of rain 20 percent. Heat index
values up to 100.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the lower 70s.
Highs in the lower 90s.

$$

MOZ042-049-050-310600-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

.TONIGHT...Mostly clear. Lows in the lower 70s. South winds 5 to
10 mph with gusts up to 20 mph.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
10 to 15 mph with gusts up to 25 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
5 to 10 mph.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds
5 to 10 mph. Heat index values up to 101 early in the evening.
.WEDNESDAY THROUGH SATURDAY...Mostly clear. Highs in the mid 90s.
Lows in the mid 70s. Heat index values up to 105.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs in the upper 80s.

$$

MOZ041-047-048-310600-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

.TONIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to
10 mph with gusts up to 20 mph.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph with gusts up to 20 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 101 early in the evening.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 103 early in the evening.
.WEDNESDAY THROUGH SATURDAY...Mostly clear. Hot. Highs in the mid
90s. Lows in the mid 70s. Heat index values up to 105.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the lower 70s.
Highs in the lower 90s.

$$

ILZ095>097-MOZ018-019-026-027-034>036-310600-
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
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

.TONIGHT...Mostly clear. Lows in the mid 70s. South winds 5 to
10 mph with gusts up to 20 mph.
.MONDAY...Mostly sunny. Hot with highs in the upper 90s.
Southwest winds 10 to 15 mph with gusts up to 25 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
5 to 10 mph. Heat index values up to 102 early in the evening.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph. Heat index values up to 105.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 103 early in the evening.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Hot. Highs in the
upper 90s. Lows in the upper 70s. Heat index values up to 105.
.THURSDAY...Mostly sunny. A slight chance of showers in the
morning. Hot with highs in the mid 90s. Chance of rain
20 percent. Heat index values up to 105.
.THURSDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms after midnight. Lows in the mid 70s. Chance of rain
20 percent. Heat index values up to 100 early in the evening.
.FRIDAY...Sunny. A slight chance of showers in the morning. Highs
in the lower 90s. Chance of rain 20 percent. Heat index values up
to 100.
.FRIDAY NIGHT...Mostly clear. Lows in the lower 70s.
.SATURDAY...Sunny. A slight chance of showers in the morning.
Highs in the lower 90s. Chance of rain 20 percent.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 60s.
.SUNDAY...Mostly sunny. Highs in the upper 80s.

$$

ILZ069-074-310600-
Clinton IL-Washington IL-
533 PM CDT Sun Aug 30 2026

...EXTREME HEAT WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH
FRIDAY EVENING...

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

$$

ILZ070-310600-
Marion IL-
Including the cities of Centralia and Salem
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

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

$$

MOZ074-084-085-099-310600-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

.TONIGHT...Mostly clear. Lows in the upper 60s. South winds
around 5 mph.
.MONDAY...Sunny, hot with highs in the mid 90s. South winds 5 to
10 mph.
.MONDAY NIGHT...Clear. Lows in the lower 70s. South winds around
5 mph.
.TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 104.
.TUESDAY NIGHT...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. Heat index
values up to 105.
.WEDNESDAY NIGHT THROUGH FRIDAY...Mostly clear. Hot. Lows in the
lower 70s. Highs in the mid 90s. Heat index values up to 105.
.FRIDAY NIGHT AND SATURDAY...Mostly clear. 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.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs around 90.

$$

MOZ051-052-060-310600-
Montgomery MO-Lincoln MO-Warren MO-
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

.TONIGHT...Mostly clear. Lows in the lower 70s. South winds
around 5 mph.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph with gusts up to 20 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 100 early in the evening.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 106.
.TUESDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 103 early in the evening.
.WEDNESDAY THROUGH THURSDAY NIGHT...Mostly clear. Hot. Highs in
the upper 90s. Lows in the mid 70s. Heat index values up to 105.
.FRIDAY...Sunny. A slight chance of showers in the morning. Hot
with highs in the mid 90s. Chance of rain 20 percent. Heat index
values up to 105.
.FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows in the lower
70s. Highs in the lower 90s. Heat index values up to 100.

$$

ILZ058-059-098-099-310600-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

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

$$

ILZ060-064-065-310600-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

.TONIGHT...Mostly clear. Lows around 70. South winds around
5 mph.
.MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds
5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph. Heat index values up to 105.
.TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 101 early in the evening.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Hot. Highs in the
upper 90s. Lows in the upper 70s. Heat index values up to 105.
.THURSDAY NIGHT...Mostly clear with a slight chance of showers
and thunderstorms. Lows in the mid 70s. Chance of rain
20 percent. Heat index values up to 100 early in the evening.
.FRIDAY...Sunny. A slight chance of showers in the morning. Hot
with highs in the mid 90s. Chance of rain 20 percent. Heat index
values up to 105.
.FRIDAY NIGHT AND SATURDAY...Mostly clear. A slight chance of
showers and thunderstorms. Lows in the lower 70s. Highs in the
lower 90s. Chance of rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs in the upper 80s.

$$

ILZ079-310600-
Randolph IL-
Including the cities of Chester and Sparta
533 PM CDT Sun Aug 30 2026

...EXTREME HEAT WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH
FRIDAY EVENING...

.TONIGHT...Mostly clear. Lows around 70. South winds around
5 mph.
.MONDAY...Sunny, hot with highs in the mid 90s. South winds 5 to
10 mph.
.MONDAY NIGHT...Clear. Lows in the lower 70s. South winds around
5 mph.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 107.
.TUESDAY NIGHT...Mostly 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. Heat index
values up to 105.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Hot. Lows
in the mid 70s. Highs in the upper 90s. Heat index values up to
110.
.FRIDAY...Sunny. A slight chance of showers in the morning. Hot
with highs in the mid 90s. Chance of rain 20 percent. Heat index
values up to 105.
.FRIDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the lower 70s. Heat index values up to
105 early in the evening.
.SATURDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the lower 90s. Chance of rain 20 percent. Heat
index values up to 100.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows around 70. Highs
in the lower 90s.

$$

MOZ075-310600-
Sainte Genevieve MO-
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

.TONIGHT...Mostly clear. Lows around 70. South winds around
5 mph.
.MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds
5 to 10 mph.
.MONDAY NIGHT...Clear. Lows in the mid 70s. South winds around
5 mph.
.TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 106.
.TUESDAY NIGHT...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 mid 90s. Heat index
values up to 105.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Hot. Lows
in the mid 70s. Highs in the mid 90s. Heat index values up to
105.
.FRIDAY...Sunny. A slight chance of showers in the morning. Hot
with highs in the mid 90s. Chance of rain 20 percent. Heat index
values up to 105.
.FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
in the lower 70s. Heat index values up to 100 early in the
evening.
.SATURDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the lower 90s. Chance of rain 20 percent. Heat
index values up to 100.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows around 70. Highs
around 90.

$$

MOZ059-062-072-073-310600-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

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

$$

ILZ102-310600-
Monroe IL-
533 PM CDT Sun Aug 30 2026

...EXTREME HEAT WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH
FRIDAY EVENING...

.TONIGHT...Mostly clear. Lows around 70. South winds around
5 mph.
.MONDAY...Sunny, hot with highs in the upper 90s. South winds
5 to 10 mph.
.MONDAY NIGHT...Clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 100 early in the evening.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 109.
.TUESDAY NIGHT...Mostly 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. Heat index
values up to 110.
.WEDNESDAY NIGHT THROUGH FRIDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the upper 90s. Heat index values up to 110.
.FRIDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the lower 70s. Heat index values up to
105 early in the evening.
.SATURDAY...Sunny. A slight chance of showers in the morning.
Highs in the mid 90s. Chance of rain 20 percent. Heat index
values up to 105.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows around 70. Highs
in the lower 90s.

$$

MOZ065-310600-
Jefferson MO-
533 PM CDT Sun Aug 30 2026

...HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 8 PM CDT FRIDAY...

.TONIGHT...Mostly clear. Lows in the lower 70s. South winds
around 5 mph.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph.
.MONDAY NIGHT...Clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 100 early in the evening.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 108.
.TUESDAY NIGHT...Mostly 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. Heat index
values up to 110.
.WEDNESDAY NIGHT THROUGH FRIDAY...Mostly clear. Hot. Lows in the
upper 70s. Highs in the upper 90s. Heat index values up to 110.
.FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
in the lower 70s. Heat index values up to 105 early in the
evening.
.SATURDAY...Sunny. A slight chance of showers in the morning.
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 upper 60s.
Highs in the lower 90s.

$$