469
FPUS53 KLSX 190919
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
419 AM CDT Tue Aug 19 2025

ILZ100-101-MOZ061-063-064-191700-
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
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Sunny with a slight chance of showers and thunderstorms.
Highs in the mid 90s. West winds around 5 mph, becoming northwest
this afternoon. Chance of rain 20 percent. Heat index values up
to 107.
.TONIGHT...Mostly clear with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Humid with lows in the lower 70s. North winds 5 to 10 mph. Chance
of rain 20 percent. Heat index values up to 101 early in the
evening.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows in the
mid 60s. Highs in the upper 80s.
.SATURDAY...Mostly sunny. Highs in the upper 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows around
60. Highs in the lower 80s.
.MONDAY...Mostly sunny. Highs in the upper 70s.

$$

MOZ049-191700-
Osage MO-
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Sunny with a slight chance of showers and thunderstorms.
Highs in the mid 90s. West winds around 5 mph, becoming north
this afternoon. Chance of rain 20 percent. Heat index values up
to 104.
.TONIGHT...Mostly clear with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Lows in the lower 70s. Northeast winds around 5 mph. Chance of
rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the mid 80s. Northeast winds 5 to
10 mph.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the upper 80s.
Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the upper 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 50s. Highs in the lower 80s.
.MONDAY...Mostly sunny. Highs in the upper 70s.

$$

MOZ042-050-191700-
Audrain MO-Callaway MO-
Including the cities of Mexico and Fulton
419 AM CDT Tue Aug 19 2025

.TODAY...Sunny with a slight chance of showers and thunderstorms.
Highs in the lower 90s. West winds around 5 mph, becoming north
this afternoon. Chance of rain 20 percent. Heat index values up
to 102.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the upper 60s. North winds 5 to 10 mph.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s. Northeast winds 5 to
10 mph.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the mid 80s.
Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 50s. Highs in the upper 70s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

MOZ047-048-191700-
Moniteau MO-Cole MO-
Including the city of Jefferson City
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the mid 90s. West winds around 5 mph,
becoming north this afternoon. Chance of rain 20 percent. Heat
index values up to 104.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows around 70. Northeast winds around 5 mph.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s. Northeast
winds around 5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds around 5 mph.
.THURSDAY...Sunny. Highs in the mid 80s. Northeast winds around
5 mph.
.THURSDAY NIGHT AND FRIDAY...Clear. Lows in the lower 60s. Highs
around 90.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the upper 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 50s. Highs in the lower 80s.
.MONDAY...Mostly sunny. A slight chance of showers in the
afternoon. Highs in the upper 70s. Chance of rain 20 percent.

$$

MOZ041-191700-
Boone MO-
Including the city of Columbia
419 AM CDT Tue Aug 19 2025

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this morning. Highs in the lower 90s. Northwest
winds 5 to 10 mph. Chance of rain 20 percent. Heat index values
up to 103.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows around 70. Northeast winds 5 to 10 mph.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the mid 80s. Northeast winds 5 to
10 mph.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the upper 80s.
Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 50s. Highs in the upper 70s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ095>097-MOZ018-019-026-027-034>036-191700-
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
419 AM CDT Tue Aug 19 2025

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this morning. Highs in the upper 80s. North winds
5 to 10 mph. Chance of rain 20 percent.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the upper 60s. North winds 5 to 10 mph.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s. Northeast winds 5 to
10 mph.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows in the lower 60s.
Highs in the mid 80s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 60s.
Highs in the lower 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
mid 50s. Highs in the upper 70s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ069-070-074-191700-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Sunny. A slight chance of showers and thunderstorms this
morning, then a chance of showers and thunderstorms this
afternoon. Highs in the mid 90s. Southwest winds around 5 mph,
becoming northwest this afternoon. Chance of rain 30 percent.
Heat index values up to 106.
.TONIGHT...Partly cloudy. A chance of showers and thunderstorms
in the evening. Humid with lows in the lower 70s. North winds
around 5 mph. Chance of rain 40 percent. Heat index values up to
101 early in the evening.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows in
the lower 60s. Highs in the upper 80s.
.SUNDAY THROUGH MONDAY...Mostly clear. Highs around 80. Lows in
the upper 50s.

$$

MOZ074-084-085-099-191700-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Mostly sunny. A chance of showers and thunderstorms this
afternoon. Hot with highs in the mid 90s. West winds around
5 mph, becoming northwest around 5 mph this afternoon. Chance of
rain 40 percent. Heat index values up to 105.
.TONIGHT...Mostly cloudy with a chance of showers and
thunderstorms in the evening, then partly cloudy with a slight
chance of showers and thunderstorms after midnight. Lows in the
lower 70s. North winds around 5 mph. Chance of rain 50 percent.
.WEDNESDAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the upper 80s. North winds 5 to 10 mph.
Chance of rain 20 percent.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the mid 80s. Northeast winds 5 to
10 mph.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows in the lower 60s.
Highs in the upper 80s.
.FRIDAY NIGHT...Clear. Lows in the lower 60s.
.SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the upper
80s. Lows in the lower 60s.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Highs in the mid 80s.
Lows in the upper 50s.
.MONDAY...Mostly sunny. Highs in the upper 70s.

$$

MOZ060-191700-
Warren MO-
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Sunny with a slight chance of showers and thunderstorms.
Highs in the lower 90s. West winds around 5 mph, becoming
northwest this afternoon. Chance of rain 20 percent. Heat index
values up to 105.
.TONIGHT...Mostly clear with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Lows around 70. North winds around 5 mph. Chance of rain
20 percent.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds around 5 mph.
.THURSDAY...Sunny. Highs in the lower 80s. Northeast winds around
5 mph.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the mid 80s.
Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 50s. Highs in the upper 70s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

MOZ051-052-191700-
Montgomery MO-Lincoln MO-
419 AM CDT Tue Aug 19 2025

.TODAY...Sunny with a slight chance of showers and thunderstorms.
Highs in the lower 90s. Northwest winds 5 to 10 mph. Chance of
rain 20 percent. Heat index values up to 104.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows around 70. North winds around 5 mph.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s. Northeast winds 5 to
10 mph.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the mid 80s.
Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 50s. Highs in the upper 70s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ058-059-098-099-191700-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
419 AM CDT Tue Aug 19 2025

.TODAY...Sunny with a slight chance of showers and thunderstorms.
Highs in the lower 90s. West winds around 5 mph, becoming
northwest this afternoon. Chance of rain 20 percent. Heat index
values up to 102.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows around 70. North winds around 5 mph.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s. Northeast winds 5 to
10 mph.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows in the
mid 60s. Highs in the mid 80s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 50s. Highs in the upper 70s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ064-065-191700-
Bond IL-Fayette IL-
Including the city of Vandalia
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 90s. Southwest winds around
5 mph, becoming northwest this afternoon. Chance of rain
20 percent. Heat index values up to 106.
.TONIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Lows around 70. North winds around
5 mph. Chance of rain 20 percent. Heat index values up to
100 early in the evening.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows in the
lower 60s. Highs in the mid 80s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT THROUGH MONDAY...Mostly clear. Lows in the upper
50s. Highs in the upper 70s.

$$

ILZ060-191700-
Montgomery IL-
Including the city of Litchfield
419 AM CDT Tue Aug 19 2025

.TODAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 90s. Southwest winds around
5 mph, becoming northwest this afternoon. Chance of rain
20 percent. Heat index values up to 103.
.TONIGHT...Partly cloudy. Lows in the upper 60s. North winds
around 5 mph.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s. Northeast winds 5 to
10 mph.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows in the
lower 60s. Highs in the mid 80s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT THROUGH MONDAY...Mostly clear. Lows in the mid
50s. Highs in the upper 70s.

$$

ILZ079-MOZ075-191700-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Sunny. A slight chance of showers and thunderstorms this
morning, then a chance of showers and thunderstorms this
afternoon. Hot with highs in the mid 90s. Southwest winds around
5 mph, becoming northwest this afternoon. Chance of rain
40 percent. Heat index values up to 108.
.TONIGHT...Mostly cloudy with a chance of showers and
thunderstorms in the evening, then partly cloudy with a slight
chance of showers and thunderstorms after midnight. Humid with
lows in the lower 70s. North winds around 5 mph. Chance of rain
50 percent. Heat index values up to 102 early in the evening.
.WEDNESDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the upper 80s. North winds
5 to 10 mph. Chance of rain 20 percent.
.WEDNESDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows in
the mid 60s. Highs around 90.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Highs in the mid 80s.
Lows in the upper 50s.
.MONDAY...Mostly sunny. Highs around 80.

$$

MOZ059-062-072-073-191700-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Sunny with a slight chance of showers. A slight chance
of thunderstorms this morning, then a chance of thunderstorms
this afternoon. Highs in the mid 90s. West winds around 5 mph,
becoming northwest this afternoon. Chance of rain 40 percent.
Heat index values up to 104.
.TONIGHT...Partly cloudy. A chance of thunderstorms with a slight
chance of showers in the evening. Lows around 70. North winds
around 5 mph. Chance of rain 50 percent.
.WEDNESDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the upper 80s. Northeast winds 5 to 10 mph.
Chance of rain 20 percent.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds around 5 mph.
.THURSDAY...Sunny. Highs in the mid 80s. Northeast winds around
5 mph.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows in the
lower 60s. Highs in the upper 80s.
.SATURDAY...Mostly sunny. Highs in the upper 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows in the
upper 50s. Highs in the lower 80s.
.MONDAY...Mostly sunny. Highs in the upper 70s.

$$

ILZ102-MOZ065-191700-
Monroe IL-Jefferson MO-
419 AM CDT Tue Aug 19 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TODAY...Sunny. A slight chance of showers and thunderstorms this
morning, then a chance of showers and thunderstorms this
afternoon. Hot with highs in the mid 90s. West winds around
5 mph, becoming northwest around 5 mph this afternoon. Chance of
rain 40 percent. Heat index values up to 107.
.TONIGHT...Partly cloudy. A chance of showers and thunderstorms
in the evening. Humid with lows in the lower 70s. North winds
around 5 mph. Chance of rain 30 percent. Heat index values up to
102 early in the evening.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s. Northeast winds
5 to 10 mph.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows in the
mid 60s. Highs in the upper 80s.
.SATURDAY...Mostly sunny. Highs in the upper 80s.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows around
60. Highs in the lower 80s.
.MONDAY...Mostly sunny. Highs in the upper 70s.

$$