527
FPUS53 KLSX 010328
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
1027 PM CDT Mon Aug 31 2026

ILZ100-101-MOZ061-063-064-011100-
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
1027 PM CDT Mon Aug 31 2026

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

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

$$

MOZ042-049-050-011100-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...Clear. Lows in the lower 70s. South winds around
5 mph.
.TUESDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 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...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph.
.THURSDAY THROUGH FRIDAY NIGHT...Mostly clear. Hot. Highs in the
mid 90s. Lows in the mid 70s. Heat index values up to 105.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Highs in the lower 90s.
Lows in the lower 70s. Heat index values up to 100.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 60s.
.LABOR DAY...Mostly sunny. Highs around 90.

$$

MOZ041-047-048-011100-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...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 upper 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 THROUGH SATURDAY...Mostly clear. Hot. Highs in the
upper 90s. Lows in the mid 70s. Heat index values up to 105.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the lower
70s. Highs in the lower 90s. Heat index values up to 100.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows around 70.
.LABOR DAY...Mostly sunny. Highs in the lower 90s.

$$

ILZ095>097-MOZ018-019-026-027-034>036-011100-
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
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...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.
.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...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 THROUGH FRIDAY NIGHT...Mostly clear. Hot. Highs in the
mid 90s. Lows in the mid 70s. Heat index values up to 105.
.SATURDAY...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.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the lower
70s. Highs around 90.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the upper 60s.
.LABOR DAY...Mostly sunny. Highs in the upper 80s.

$$

ILZ069-070-074-011100-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...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...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 5 to 10 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 101 early in the evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. 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 mid 90s. Chance of rain
20 percent. Heat index values up to 105.
.SATURDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Lows in the lower 70s. Chance of
rain 20 percent. Heat index values up to 100 early in the
evening.
.SUNDAY...Mostly sunny. Highs in the lower 90s.
.SUNDAY NIGHT AND LABOR DAY...Mostly clear. Lows in the upper
60s. Highs in the lower 90s.

$$

MOZ074-084-085-099-011100-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...Clear. Lows around 70. South winds around 5 mph.
.TUESDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph.
.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. 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.
.THURSDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows in the lower
70s. Highs in the lower 90s. Heat index values up to 105.
.SUNDAY NIGHT AND LABOR DAY...Mostly clear. Lows in the upper
60s. Highs around 90.

$$

MOZ051-052-060-011100-
Montgomery MO-Lincoln MO-Warren MO-
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...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 in the afternoon.
.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. Southwest
winds around 5 mph. Heat index values up to 102.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 100 early in the evening.
.THURSDAY THROUGH FRIDAY NIGHT...Mostly clear. Hot. Highs in the
mid 90s. Lows in the mid 70s. Heat index values up to 105.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Highs in the lower 90s.
Lows in the lower 70s. Heat index values up to 105.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 60s.
.LABOR DAY...Mostly sunny. Highs around 90.

$$

ILZ058-059-098-099-011100-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
1027 PM CDT Mon Aug 31 2026

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

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

$$

ILZ060-064-065-011100-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...Clear. Near steady temperature in the upper 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 104.
.TUESDAY NIGHT...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.
.THURSDAY THROUGH FRIDAY NIGHT...Mostly clear. Hot. Highs in the
upper 90s. Lows in the mid 70s. 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 around
70. Chance of rain 20 percent. Heat index values up to 100.
.SUNDAY...Mostly sunny. Highs around 90.
.SUNDAY NIGHT AND LABOR DAY...Mostly clear. Lows in the upper
60s. Highs around 90.

$$

ILZ079-MOZ075-011100-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...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...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 5 to 10 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 101 early in the evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. Heat index
values up to 105.
.THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the mid 90s. Heat index values up to 110.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the lower
70s. Highs in the lower 90s. Heat index values up to 100.
.SUNDAY NIGHT AND LABOR DAY...Mostly clear. Lows in the upper
60s. Highs in the lower 90s.

$$

MOZ059-062-072-073-011100-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...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 104.
.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...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 102.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph.
.THURSDAY...Sunny, hot with highs in the mid 90s. Heat index
values up to 105.
.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 AND SUNDAY...Partly cloudy. Lows in the lower
70s. Highs in the lower 90s. Heat index values up to 100.
.SUNDAY NIGHT AND LABOR DAY...Mostly clear. Lows in the upper
60s. Highs around 90.

$$

ILZ102-MOZ065-011100-
Monroe IL-Jefferson MO-
1027 PM CDT Mon Aug 31 2026

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

.OVERNIGHT...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...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 105.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 100 early in the evening.
.THURSDAY...Sunny, hot with highs in the upper 90s. 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 THROUGH LABOR DAY...Partly cloudy. Lows in the
upper 60s. Highs in the lower 90s. Heat index values up to 100.

$$