129
FPUS53 KLSX 251038
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
538 AM CDT Sat Jul 25 2026

ILZ100-101-MOZ061-063-064-251800-
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
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Partly sunny. Showers with a slight chance of
thunderstorms this morning. Warmer with highs in the upper 80s.
South winds around 5 mph. Chance of rain 80 percent. Heat index
values up to 100 this afternoon.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
clear. Humid with lows in the lower 70s. Southeast winds around
5 mph in the evening, becoming light and variable. Heat index
values up to 101 early in the evening.
.SUNDAY...Mostly sunny. Humid with highs in the mid 90s. South
winds around 5 mph. Heat index values up to 110.
.SUNDAY NIGHT...Partly cloudy. Humid with lows in the mid 70s.
South winds around 5 mph. Heat index values up to 109 early in
the evening.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph. Heat index values up to 112.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the upper 70s.
Highs in the lower 90s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. Heat index
values up to 100 early in the evening.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the lower
90s. Lows in the lower 70s.
.THURSDAY...Mostly sunny. Highs in the lower 90s.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the lower 70s. Highs around
90. Chance of rain 20 percent.

$$

MOZ042-049-050-251800-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this morning. Much warmer with highs in the upper
80s. Southwest winds around 5 mph. Chance of rain 20 percent.
Heat index values up to 104 this afternoon.
.TONIGHT...Mostly clear. Humid with lows in the lower 70s. South
winds around 5 mph in the evening, becoming light and variable.
Heat index values up to 104 early in the evening.
.SUNDAY...Mostly sunny. Humid with highs in the mid 90s.
Southwest winds around 5 mph. Heat index values up to 109.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 70s. South winds around 5 mph.
Heat index values up to 108 early in the evening.
.MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds
10 to 15 mph with gusts up to 25 mph. Heat index values up to
108.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s.
Highs in the lower 90s. Heat index values up to 105.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 70.
Highs in the lower 90s. Heat index values up to 100.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s.
.THURSDAY THROUGH FRIDAY...Partly cloudy with a slight chance of
showers and thunderstorms. Highs around 90. Lows around 70.
Chance of rain 20 percent.

$$

MOZ041-047-048-251800-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM CDT
MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Mostly sunny. Much warmer with highs in the lower 90s.
Southwest winds around 5 mph. Heat index values up to 107 this
afternoon.
.TONIGHT...Mostly clear. Humid with lows in the mid 70s.
Southwest winds around 5 mph in the evening, becoming light and
variable. Heat index values up to 108 early in the evening.
.SUNDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 112.
.SUNDAY NIGHT...Mostly clear. Humid with lows in the upper 70s.
South winds around 5 mph. Heat index values up to 111 early in
the evening.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph with gusts up to 20 mph. Heat index values up to
111 in the afternoon.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s.
Highs in the mid 90s. Heat index values up to 110.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the lower
70s. Highs in the lower 90s. Heat index values up to 100.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 70s.
.THURSDAY THROUGH FRIDAY...Partly cloudy with a slight chance of
showers and thunderstorms. Highs in the lower 90s. Lows in the
lower 70s. Chance of rain 20 percent.

$$

ILZ095>097-MOZ018-019-026-027-034>036-251800-
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
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Partly sunny. A chance of showers with a slight chance
of thunderstorms this morning. Much warmer with highs in the
upper 80s. Southwest winds around 5 mph. Chance of rain
50 percent. Heat index values up to 102 this afternoon.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the lower 70s. Light and variable
winds. Heat index values up to 103 early in the evening.
.SUNDAY...Mostly sunny. Humid with highs in the mid 90s.
Southwest winds around 5 mph. Heat index values up to 109.
.SUNDAY NIGHT...Partly cloudy. Humid with lows in the mid 70s.
Southwest winds around 5 mph. Gusts up to 20 mph after midnight.
Heat index values up to 108 early in the evening.
.MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds
10 to 15 mph with gusts up to 25 mph. Heat index values up to
109.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s.
Highs in the lower 90s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows in the upper 60s.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the lower
90s. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs around 90.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows around 70. Highs in the upper
80s. Chance of rain 20 percent.

$$

ILZ069-070-074-251800-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Mostly cloudy this morning, then becoming partly sunny.
A slight chance of thunderstorms. Showers, mainly this morning.
Highs in the mid 80s. South winds around 5 mph. Chance of rain
90 percent.
.TONIGHT...Partly cloudy. Humid with lows in the lower 70s. Light
and variable winds.
.SUNDAY...Mostly sunny. Humid with highs in the lower 90s. Light
and variable winds. Heat index values up to 108.
.SUNDAY NIGHT...Partly cloudy. Humid with lows in the mid 70s.
Light and variable winds, becoming south around 5 mph after
midnight. Heat index values up to 107 early in the evening.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph. Heat index values up to 112.
.MONDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the upper 70s. Chance of
rain 20 percent. Heat index values up to 110 early in the
evening.
.TUESDAY...Sunny. Highs in the lower 90s. Heat index values up to
105.
.TUESDAY NIGHT...Partly cloudy. Lows in the upper 60s. Heat index
values up to 100 early in the evening.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 90.
Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs around 90.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the lower 70s. Highs in the
upper 80s. Chance of rain 20 percent.

$$

MOZ074-084-085-099-251800-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Partly sunny. A chance of showers with a slight chance
of thunderstorms this morning. Much warmer with highs in the
upper 80s. Southwest winds around 5 mph. Chance of rain
50 percent. Heat index values up to 101 this afternoon.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the lower 70s. Light and variable
winds.
.SUNDAY...Mostly sunny. Humid with highs in the mid 90s. Light
and variable winds. Heat index values up to 108.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the lower 70s. Light and variable
winds, becoming southwest around 5 mph after midnight. Heat index
values up to 105 early in the evening.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 107.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the mid 90s. Heat index values up to 105.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 70.
Highs in the lower 90s. Heat index values up to 100.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs around 90.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the upper 60s. Highs in the
upper 80s. Chance of rain 20 percent.

$$

MOZ051-052-060-251800-
Montgomery MO-Lincoln MO-Warren MO-
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Mostly sunny. A chance of showers with a slight chance
of thunderstorms this morning. Much warmer with highs in the
upper 80s. Southwest winds around 5 mph, becoming west around
5 mph this afternoon. Chance of rain 50 percent. Heat index
values up to 104 this afternoon.
.TONIGHT...Mostly clear. Humid with lows in the lower 70s. Light
and variable winds. Heat index values up to 103 early in the
evening.
.SUNDAY...Mostly sunny. Humid with highs in the mid 90s. Light
and variable winds, becoming southwest around 5 mph in the
afternoon. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 70s. Light and variable winds,
becoming southwest around 5 mph after midnight. Heat index values
up to 109 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the upper 90s.
Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index
values up to 110.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s.
Highs in the lower 90s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows around 70. Heat index values
up to 100 early in the evening.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the lower
90s. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the lower 90s.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows around 70. Highs around 90.
Chance of rain 20 percent.

$$

ILZ058-059-098-099-251800-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Mostly cloudy with showers with a slight chance of
thunderstorms this morning, then mostly sunny with a slight
chance of showers this afternoon. Warmer with highs in the mid
80s. South winds around 5 mph. Chance of rain 80 percent.
.TONIGHT...Partly cloudy. Humid with lows in the lower 70s.
Southeast winds around 5 mph in the evening, becoming light and
variable. Heat index values up to 100 early in the evening.
.SUNDAY...Mostly sunny. Humid with highs in the lower 90s. South
winds around 5 mph. Heat index values up to 107.
.SUNDAY NIGHT...Partly cloudy. Humid with lows in the mid 70s.
South winds around 5 mph. Heat index values up to 106 early in
the evening.
.MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds
10 to 15 mph. Heat index values up to 109.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s.
Highs in the lower 90s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows in the upper 60s.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 90.
Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs around 90.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the upper 60s. Highs in the
upper 80s. Chance of rain 20 percent.

$$

ILZ060-064-065-251800-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Cloudy this morning, then becoming partly sunny. A
slight chance of thunderstorms. Showers, mainly this morning.
Highs in the lower 80s. South winds around 5 mph. Chance of rain
90 percent.
.TONIGHT...Partly cloudy. Humid with lows around 70. Southeast
winds around 5 mph in the evening, becoming light and variable.
.SUNDAY...Partly sunny. Humid with highs in the lower 90s. Light
and variable winds, becoming southwest around 5 mph in the
afternoon. Heat index values up to 105.
.SUNDAY NIGHT...Partly cloudy. Humid with lows in the lower 70s.
South winds around 5 mph. Heat index values up to 104 early in
the evening.
.MONDAY...Sunny, hot with highs in the mid 90s. Southwest winds
5 to 10 mph. Heat index values up to 110.
.MONDAY 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 105 early in the evening.
.TUESDAY...Sunny. Highs in the lower 90s. Heat index values up to
100.
.TUESDAY NIGHT...Partly cloudy. Lows in the upper 60s.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper
80s. Lows in the upper 60s.
.THURSDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Lows in the upper 60s.
.FRIDAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the upper 80s. Chance of rain 20 percent.

$$

ILZ079-MOZ075-251800-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Mostly cloudy with showers likely with a slight chance
of thunderstorms this morning, then partly sunny this afternoon.
Warmer with highs in the upper 80s. South winds around 5 mph.
Chance of rain 70 percent. Heat index values up to 100 this
afternoon.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
clear. Humid with lows in the lower 70s. South winds around 5 mph
in the evening, becoming light and variable. Heat index values up
to 100 early in the evening.
.SUNDAY...Mostly sunny. Humid with highs in the lower 90s. Light
and variable winds. Heat index values up to 108.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 70s. South winds around 5 mph.
Heat index values up to 108 early in the evening.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 111.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the upper 70s.
Highs in the mid 90s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows around 70. Heat index values
up to 105 early in the evening.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the lower
90s. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the lower 90s.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows around 70. Highs around 90.
Chance of rain 20 percent.

$$

MOZ059-062-072-073-251800-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Mostly sunny. A chance of showers with a slight chance
of thunderstorms this morning. Much warmer with highs in the
upper 80s. Southwest winds around 5 mph, becoming west around
5 mph this afternoon. Chance of rain 40 percent. Heat index
values up to 103 this afternoon.
.TONIGHT...Mostly clear. Humid with lows in the lower 70s. Light
and variable winds. Heat index values up to 102 early in the
evening.
.SUNDAY...Mostly sunny. Hot with highs in the mid 90s. Light and
variable winds. Heat index values up to 109.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 70s. Light and variable winds,
becoming southwest around 5 mph after midnight. Heat index values
up to 109 early in the evening.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph. Heat index values up to 108.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s.
Highs in the mid 90s. Heat index values up to 110.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 70.
Highs in the lower 90s. Heat index values up to 100.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s.
.THURSDAY THROUGH FRIDAY...Partly cloudy with a slight chance of
showers and thunderstorms. Highs in the lower 90s. Lows in the
upper 60s. Chance of rain 20 percent.

$$

ILZ102-MOZ065-251800-
Monroe IL-Jefferson MO-
538 AM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.TODAY...Partly sunny. A chance of showers with a slight chance
of thunderstorms this morning. Warmer with highs in the upper
80s. Southwest winds around 5 mph. Chance of rain 50 percent.
Heat index values up to 102 this afternoon.
.TONIGHT...Mostly clear. Humid with lows in the lower 70s. Light
and variable winds. Heat index values up to 100 early in the
evening.
.SUNDAY...Mostly sunny. Humid with highs in the mid 90s. Light
and variable winds. Heat index values up to 111.
.SUNDAY NIGHT...Partly cloudy. Humid with lows in the mid 70s.
Light and variable winds, becoming southwest around 5 mph after
midnight. Heat index values up to 109 early in the evening.
.MONDAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph. Heat index values up to 111.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the upper 70s.
Highs in the mid 90s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows around 70. Heat index values
up to 105 early in the evening.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the lower
90s. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the lower 90s.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows around 70. Highs around 90.
Chance of rain 20 percent.

$$