Zone Forecast Product
Issued by NWS St. Louis, MO

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FPUS53 KLSX 300438
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
1138 PM CDT Sat Aug 29 2026

ILZ100-101-MOZ061-063-064-301200-
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
1138 PM CDT Sat Aug 29 2026

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

$$

MOZ042-049-050-301200-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear and not as cool. Near steady
temperature in the lower 70s. South winds 5 to 10 mph with gusts
up to 25 mph.
.SUNDAY...Sunny, hot with highs in the mid 90s. South winds 5 to
10 mph with gusts up to 25 mph.
.SUNDAY NIGHT...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
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.
.TUESDAY 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 in the evening, then partly cloudy
with a slight chance of showers after midnight. Lows in the mid
70s. Chance of rain 20 percent. Heat index values up to 100 early
in the evening.
.FRIDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the mid 90s. Chance of
rain 20 percent.
.FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
in the lower 70s.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 90s. Chance of
rain 20 percent.

$$

MOZ041-047-048-301200-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear. Near steady temperature in the lower
70s. South winds 5 to 10 mph with gusts up to 20 mph.
.SUNDAY...Sunny, hot with highs in the upper 90s. South winds
5 to 10 mph with gusts up to 20 mph.
.SUNDAY NIGHT...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 103 early in the evening.
.TUESDAY 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 in the evening, then becoming
partly cloudy. Lows in the mid 70s. Heat index values up to
105 early in the evening.
.FRIDAY THROUGH SATURDAY...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.

$$

ILZ095>097-MOZ018-019-026-027-034>036-301200-
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
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear and not as cool. Near steady
temperature in the lower 70s. South winds 5 to 10 mph with gusts
up to 25 mph.
.SUNDAY...Mostly sunny. Highs in the mid 90s. South winds 10 to
15 mph with gusts up to 25 mph.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. 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 mid 90s. Southwest
winds 5 to 10 mph with gusts up to 25 mph. Heat index values up
to 104 in the afternoon.
.MONDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds
5 to 10 mph. Heat index values up to 101 early in the evening.
.TUESDAY THROUGH THURSDAY...Mostly clear. Hot. Highs in the upper
90s. Lows in the upper 70s. Heat index values up to 105.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the mid 70s. Highs in the
lower 90s. Chance of rain 20 percent.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 70s.
.SATURDAY...Mostly 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.

$$

ILZ069-070-074-301200-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear. Lows in the mid 60s. Southeast winds
around 5 mph.
.SUNDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph.
.SUNDAY NIGHT...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. Heat index values up to 103.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph.
.TUESDAY...Sunny, hot with highs in the upper 90s. Heat index
values up to 105.
.TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the
upper 70s. Highs in the upper 90s. 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 105 early in the evening.
.FRIDAY...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.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 70s.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 90s. Chance of
rain 20 percent.

$$

MOZ074-084-085-099-301200-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear. Patchy fog. Lows in the lower 60s.
Light and variable winds, becoming south around 5 mph.
.SUNDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 60s. South winds
around 5 mph.
.MONDAY...Sunny. Highs in the mid 90s. South winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds
around 5 mph.
.TUESDAY...Sunny, hot with highs in the mid 90s. Heat index
values up to 105.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Hot. Lows
in the lower 70s. Highs in the mid 90s. Heat index values up to
105.
.THURSDAY THROUGH FRIDAY...Mostly clear with a slight chance of
showers and thunderstorms. Highs in the mid 90s. Lows in the
lower 70s. 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.
.SATURDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Highs in the lower 90s. Chance of rain
20 percent.

$$

MOZ051-052-060-301200-
Montgomery MO-Lincoln MO-Warren MO-
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear. Near steady temperature in the upper
60s. South winds 5 to 10 mph with gusts up to 20 mph.
.SUNDAY...Sunny. Highs in the mid 90s. South winds 5 to 10 mph
with gusts up to 20 mph.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds
around 5 mph.
.MONDAY...Mostly 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 101 early in the evening.
.TUESDAY 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 in the evening, then partly cloudy
with a slight chance of showers after midnight. Lows in the mid
70s. Chance of rain 20 percent. Heat index values up to 100 early
in the evening.
.FRIDAY...Mostly 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.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower
70s. Highs in the lower 90s.

$$

ILZ058-059-098-099-301200-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear. Near steady temperature in the upper
60s. South winds 5 to 10 mph.
.SUNDAY...Mostly sunny. Highs in the mid 90s. South winds 5 to
10 mph.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the lower 70s. South winds 5 to 10 mph.
.MONDAY...Sunny, hot with highs in the upper 90s. South 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 THROUGH WEDNESDAY NIGHT...Mostly clear. Hot. Highs in
the upper 90s. Lows in the upper 70s. Heat index values up to
105.
.THURSDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Hot with highs in the upper 90s. Chance of rain
20 percent.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy with 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.
.SATURDAY...Mostly sunny. Highs in the lower 90s.

$$

ILZ060-064-065-301200-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear. Lows in the mid 60s. Light and
variable winds, becoming south around 5 mph.
.SUNDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds
5 to 10 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 THROUGH WEDNESDAY NIGHT...Mostly clear. Hot. Highs in
the upper 90s. Lows in the upper 70s. Heat index values up to
105.
.THURSDAY AND THURSDAY NIGHT...Mostly clear. A slight chance of
showers and thunderstorms. Hot. Highs in the upper 90s. Lows in
the mid 70s. Chance of rain 20 percent. Heat index values up to
105.
.FRIDAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the mid 90s. Chance of rain 20 percent.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower
70s. Highs in the lower 90s.

$$

ILZ079-MOZ075-301200-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear. Patchy fog. Lows in the mid 60s. Light
and variable winds, becoming south around 5 mph.
.SUNDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph.
.SUNDAY NIGHT...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. Heat index values up to 104.
.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. Heat index
values up to 105.
.TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the upper 90s. 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, hot with highs in the mid 90s. Heat index values
up to 105.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 70s.
.SATURDAY...Sunny. Highs in the lower 90s. Heat index values up
to 100.

$$

MOZ059-062-072-073-301200-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
1138 PM CDT Sat Aug 29 2026

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

$$

ILZ102-MOZ065-301200-
Monroe IL-Jefferson MO-
1138 PM CDT Sat Aug 29 2026

.OVERNIGHT...Mostly clear. Near steady temperature in the upper
60s. Light and variable winds, becoming south around 5 mph.
.SUNDAY...Sunny, hot with highs in the mid 90s. South winds 5 to
10 mph.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. South winds
around 5 mph.
.MONDAY...Sunny, hot with highs in the upper 90s. South winds
5 to 10 mph. Heat index values up to 105 in the afternoon.
.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 THROUGH THURSDAY...Mostly clear. Hot. Highs in the upper
90s. Lows in the upper 70s. Heat index values up to 110.
.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 105 early in the evening.
.FRIDAY...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.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower
70s. Highs in the mid 90s. Heat index values up to 105.

$$