791
FPUS53 KLSX 240617
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
117 AM CDT Fri Jul 24 2026

ILZ100-101-MOZ061-063-064-241400-
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
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy. Lows in the lower 60s. Light
and variable winds.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. A 50 percent chance of showers. Highs in the upper 70s.
Southeast winds around 5 mph.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers. A slight
chance of thunderstorms in the evening, then a chance of
thunderstorms after midnight. Lows in the upper 60s. Southeast
winds around 5 mph. Chance of rain 50 percent.
.SATURDAY...Mostly cloudy with showers likely with a chance of
thunderstorms in the morning, then partly sunny in the afternoon.
Humid with highs in the upper 80s. South winds around 5 mph.
Chance of rain 70 percent. Heat index values up to 102 in the
afternoon.
.SATURDAY NIGHT...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 102 early in the evening.
.SUNDAY...Mostly sunny. Highs in the lower 90s. Heat index values
up to 105.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the upper 90s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. Heat index
values up to 105 early in the evening.
.WEDNESDAY...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.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows in the lower
70s. Highs in the lower 90s.

$$

MOZ042-049-050-241400-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy with a 30 percent chance of
showers. Near steady temperature in the mid 60s. East winds
around 5 mph.
.FRIDAY...Showers with a slight chance of thunderstorms in the
morning, then showers with a chance of thunderstorms in the
afternoon. Highs in the lower 70s. Southeast winds 5 to 10 mph.
Chance of rain near 100 percent.
.FRIDAY NIGHT...Showers with a chance of thunderstorms in the
evening, then showers likely with a slight chance of
thunderstorms after midnight. Near steady temperature in the
upper 60s. Southeast winds around 5 mph. Chance of rain
90 percent.
.SATURDAY...Mostly sunny. A chance of showers with a slight
chance of thunderstorms in the morning. Much warmer. Humid with
highs in the upper 80s. Southwest winds around 5 mph. Chance of
rain 50 percent. Heat index values up to 104 in the afternoon.
.SATURDAY NIGHT...Mostly clear. Humid with lows in the lower 70s.
Southwest winds around 5 mph in the evening, becoming light and
variable. Heat index values up to 104 early in the evening.
.SUNDAY THROUGH TUESDAY...Mostly clear. Hot. Highs in the mid
90s. Lows in the mid 70s. Heat index values up to 105.
.TUESDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows in the lower 70s. Chance of
rain 20 percent. Heat index values up to 100 early in the
evening.
.WEDNESDAY...Mostly sunny. Highs around 90.
.WEDNESDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Lows around 70.
.THURSDAY...Mostly sunny. A slight chance of showers in the
morning. Highs around 90. Chance of rain 20 percent.

$$

MOZ041-047-048-241400-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Mostly cloudy with a chance of showers with a
slight chance of thunderstorms. Lows in the mid 60s. Southeast
winds around 5 mph. Chance of rain 40 percent.
.FRIDAY...Showers. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon. Highs
in the mid 70s. Southeast winds around 5 mph. Chance of rain near
100 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening, then showers likely with a slight
chance of thunderstorms after midnight. Near steady temperature
in the lower 70s. Southeast winds around 5 mph. Chance of rain
70 percent.
.SATURDAY...Mostly sunny. Showers likely with a slight chance of
thunderstorms in the morning. Much warmer. Humid with highs in
the lower 90s. South winds around 5 mph, becoming west around
5 mph in the afternoon. Chance of rain 70 percent. Heat index
values up to 107 in the afternoon.
.SATURDAY NIGHT...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 107 early in the evening.
.SUNDAY THROUGH TUESDAY...Mostly clear. Hot. Highs in the upper
90s. Lows in the upper 70s. Heat index values up to 110.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the mid 70s. Highs in the
lower 90s. Chance of rain 20 percent. Heat index values up to
105.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 70s.
.THURSDAY...Mostly sunny. Highs in the lower 90s.

$$

ILZ095>097-MOZ018-019-026-027-034>036-241400-
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
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy with a 40 percent chance of
showers. Near steady temperature in the lower 60s. East winds
around 5 mph.
.FRIDAY...Mostly cloudy with a chance of showers. A slight chance
of thunderstorms in the afternoon. Highs in the mid 70s.
Southeast winds around 5 mph. Chance of rain 50 percent.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers with a
slight chance of thunderstorms. Lows in the mid 60s. Southeast
winds around 5 mph. Chance of rain 50 percent.
.SATURDAY...Mostly cloudy with a chance of showers with a slight
chance of thunderstorms in the morning, then mostly sunny in the
afternoon. Warmer with highs in the upper 80s. Southwest winds
around 5 mph. Chance of rain 50 percent. Heat index values up to
101 in the afternoon.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Humid with lows in the lower 70s. Southwest winds
around 5 mph in the evening, becoming light and variable. Heat
index values up to 102 early in the evening.
.SUNDAY THROUGH MONDAY NIGHT...Mostly clear. Highs in the mid
90s. Lows in the mid 70s. Heat index values up to 110.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the lower
90s. Lows in the lower 70s. Heat index values up to 100.
.WEDNESDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the upper 80s. Chance of rain 20 percent.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows in the upper
60s. Highs in the upper 80s.

$$

ILZ069-070-074-241400-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy. Lows in the upper 50s. Light
and variable winds.
.FRIDAY...Mostly sunny in the morning, then mostly cloudy with a
slight chance of showers in the afternoon. Highs around 80. Light
and variable winds. Chance of rain 20 percent.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers. A slight
chance of thunderstorms in the evening, then a chance of
thunderstorms after midnight. Lows in the mid 60s. Light and
variable winds. Chance of rain 50 percent.
.SATURDAY...Mostly cloudy with a chance of showers and
thunderstorms in the morning, then partly sunny in the afternoon.
Highs in the mid 80s. South winds around 5 mph. Chance of rain
50 percent.
.SATURDAY NIGHT...Partly cloudy. Humid with lows in the lower
70s. South winds around 5 mph in the evening, becoming light and
variable.
.SUNDAY...Mostly sunny. Highs in the lower 90s. Heat index values
up to 105.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the mid 90s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. Heat index
values up to 105 early in the evening.
.WEDNESDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs around 90. Chance of rain
20 percent.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows around 70.
.THURSDAY...Mostly sunny. Highs in the upper 80s.

$$

MOZ074-084-085-099-241400-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Mostly cloudy. Near steady temperature in the
lower 60s. Light and variable winds.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. A 50 percent chance of showers. Highs in the upper 70s.
Light and variable winds, becoming southeast around 5 mph in the
afternoon.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southeast winds around 5 mph.
Chance of rain 50 percent.
.SATURDAY...Mostly cloudy in the morning, then becoming partly
sunny. A chance of showers. A chance of thunderstorms, mainly in
the morning. Humid with highs in the upper 80s. Southwest winds
around 5 mph. Chance of rain 50 percent. Heat index values up to
103 in the afternoon.
.SATURDAY NIGHT...Partly cloudy. Humid with lows in the lower
70s. Light and variable winds. Heat index values up to 101 early
in the evening.
.SUNDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index
values up to 105.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the upper 90s. Heat index values up to 105.
.TUESDAY NIGHT...Partly cloudy. 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.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy. Highs in the lower
90s. Lows in the lower 70s. Heat index values up to 100.

$$

MOZ051-052-060-241400-
Montgomery MO-Lincoln MO-Warren MO-
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy. Near steady temperature in the
mid 60s. Light and variable winds.
.FRIDAY...Showers likely in the morning, then showers with a
slight chance of thunderstorms in the afternoon. Highs in the mid
70s. Southeast winds around 5 mph. Chance of rain 90 percent.
.FRIDAY NIGHT...Showers with a slight chance of thunderstorms in
the evening, then showers likely with a chance of thunderstorms
after midnight. Lows in the mid 60s. Southeast winds around
5 mph. Chance of rain 90 percent.
.SATURDAY...Partly sunny. A chance of showers and thunderstorms
in the morning. Warmer with highs in the upper 80s. South winds
around 5 mph, becoming southwest in the afternoon. Chance of rain
50 percent. Heat index values up to 104 in the afternoon.
.SATURDAY NIGHT...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 104 early in the evening.
.SUNDAY THROUGH TUESDAY...Mostly clear. Hot. Highs in the mid
90s. Lows in the mid 70s. Heat index values up to 110.
.TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. Heat index
values up to 105 early in the evening.
.WEDNESDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the lower 90s. Chance of rain 20 percent.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows around 70.
Highs around 90.

$$

ILZ058-059-098-099-241400-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy. Lows in the upper 50s. East
winds around 5 mph.
.FRIDAY...Partly sunny in the morning, then mostly cloudy with a
slight chance of showers in the afternoon. Highs in the upper
70s. Southeast winds around 5 mph. Chance of rain 20 percent.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers. A slight
chance of thunderstorms in the evening, then a chance of
thunderstorms after midnight. Lows in the mid 60s. South winds
around 5 mph. Chance of rain 50 percent.
.SATURDAY...Partly sunny. A chance of showers and thunderstorms
in the morning. Highs in the mid 80s. South winds around 5 mph.
Chance of rain 50 percent.
.SATURDAY NIGHT...Partly cloudy. Humid with lows in the upper
60s. Southeast winds around 5 mph in the evening, becoming light
and variable.
.SUNDAY...Mostly sunny. Highs in the lower 90s. Heat index values
up to 105.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the mid 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...Mostly sunny. A slight chance of showers in the
morning. Highs in the upper 80s. Chance of rain 20 percent.
.WEDNESDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.

$$

ILZ060-064-065-241400-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy. Near steady temperature in the
lower 60s. Light and variable winds.
.FRIDAY...Mostly sunny in the morning, then becoming mostly
cloudy. Highs in the upper 70s. Light and variable winds,
becoming south around 5 mph in the afternoon.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers. A slight
chance of thunderstorms in the evening, then a chance of
thunderstorms after midnight. Lows in the mid 60s. Light and
variable winds, becoming south around 5 mph after midnight.
Chance of rain 50 percent.
.SATURDAY...Mostly cloudy with a chance of showers and
thunderstorms in the morning, then partly sunny in the afternoon.
Highs in the mid 80s. South winds around 5 mph. Chance of rain
50 percent.
.SATURDAY NIGHT...Partly cloudy. Humid with lows in the upper
60s. South winds around 5 mph in the evening, becoming light and
variable.
.SUNDAY...Mostly sunny. Highs in the lower 90s. Heat index values
up to 105 in the afternoon.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Lows in the mid
70s. Highs in the mid 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...Mostly sunny. A slight chance of showers in the
morning. Highs in the upper 80s. Chance of rain 20 percent.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.

$$

ILZ079-MOZ075-241400-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy. Near steady temperature in the
lower 60s. Light and variable winds.
.FRIDAY...Partly sunny in the morning, then mostly cloudy with a
chance of showers in the afternoon. Highs in the upper 70s. Light
and variable winds, becoming southeast around 5 mph in the
afternoon. Chance of rain 50 percent.
.FRIDAY NIGHT...Cloudy. A chance of showers with a slight chance
of thunderstorms in the evening, then showers likely with a
chance of thunderstorms after midnight. Lows in the mid 60s.
Southeast winds around 5 mph. Chance of rain 60 percent.
.SATURDAY...Mostly cloudy with showers likely with a chance of
thunderstorms in the morning, then partly sunny with a slight
chance of showers and thunderstorms in the afternoon. Humid with
highs in the upper 80s. South winds around 5 mph. Chance of rain
70 percent. Heat index values up to 103 in the afternoon.
.SATURDAY NIGHT...Partly cloudy. Humid with lows in the lower
70s. South winds around 5 mph in the evening, becoming light and
variable. Heat index values up to 102 early in the evening.
.SUNDAY...Mostly sunny. Highs in the mid 90s. Heat index values
up to 110.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the upper 90s. Heat index values up to 110.
.TUESDAY NIGHT THROUGH THURSDAY...Partly cloudy. Lows in the
lower 70s. Highs in the lower 90s. Heat index values up to 105.

$$

MOZ059-062-072-073-241400-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy with a 20 percent chance of
showers. Near steady temperature in the mid 60s. Light and
variable winds.
.FRIDAY...Showers likely. A slight chance of thunderstorms in the
afternoon. Highs in the mid 70s. Southeast winds around 5 mph.
Chance of rain 70 percent.
.FRIDAY NIGHT...A chance of thunderstorms. A chance of showers in
the evening, then showers likely after midnight. Lows in the mid
60s. Southeast winds around 5 mph. Chance of rain 70 percent.
.SATURDAY...Partly sunny. A chance of showers and thunderstorms,
mainly in the morning. Warmer with highs in the upper 80s. South
winds around 5 mph, becoming west in the afternoon. Chance of
rain 50 percent. Heat index values up to 105 in the afternoon.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Humid with lows in the lower 70s. Southwest winds
around 5 mph in the evening, becoming light and variable. Heat
index values up to 103 early in the evening.
.SUNDAY THROUGH MONDAY...Mostly clear. Hot. Highs in the upper
90s. Lows in the mid 70s. Heat index values up to 105.
.MONDAY NIGHT...Clear. Lows in the mid 70s. Heat index values up
to 105 early in the evening.
.TUESDAY...Sunny, hot with highs in the upper 90s. Heat index
values up to 105.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Partly cloudy. Lows in
the lower 70s. Highs in the lower 90s. Heat index values up to
100.
.THURSDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the lower 90s. Chance of rain 20 percent.

$$

ILZ102-MOZ065-241400-
Monroe IL-Jefferson MO-
117 AM CDT Fri Jul 24 2026

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY EVENING...

.REST OF TONIGHT...Partly cloudy. Lows around 60. Light and
variable winds.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. A 50 percent chance of showers. Highs in the upper 70s.
Southeast winds around 5 mph.
.FRIDAY NIGHT...A chance of thunderstorms. Showers likely. Lows
in the mid 60s. Southeast winds around 5 mph. Chance of rain
70 percent.
.SATURDAY...Mostly cloudy with showers likely with a chance of
thunderstorms in the morning, then partly sunny in the afternoon.
Warmer with highs in the upper 80s. South winds around 5 mph.
Chance of rain 60 percent. Heat index values up to 104 in the
afternoon.
.SATURDAY NIGHT...Partly cloudy. Humid with lows in the lower
70s. South winds around 5 mph in the evening, becoming light and
variable. Heat index values up to 103 early in the evening.
.SUNDAY...Mostly sunny. Highs in the mid 90s. Heat index values
up to 110.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the upper 90s. Heat index values up to 110.
.TUESDAY NIGHT THROUGH THURSDAY...Partly cloudy. Lows in the
lower 70s. Highs in the lower 90s. Heat index values up to 105.

$$