766
FPUS53 KLSX 251918
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
217 PM CDT Sat Jul 25 2026

ILZ100-101-MOZ061-063-064-260300-
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
217 PM 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...

.THIS AFTERNOON...Mostly sunny and warmer. Near steady
temperature in the mid 80s. West winds around 5 mph. Heat index
values up to 100.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 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. Isolated showers and thunderstorms in the
afternoon. Humid with highs in the mid 90s. Southwest winds
around 5 mph. Chance of rain 20 percent. Heat index values up to
108.
.SUNDAY NIGHT...Partly cloudy. Isolated showers and thunderstorms
in the evening. Humid with lows in the upper 70s. Southwest winds
around 5 mph. Chance of rain 20 percent. Heat index values up to
108 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 in the evening, then clearing.
Lows in the lower 70s. Heat index values up to 100 early in the
evening.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper
80s. Lows in the upper 60s.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows in the upper 60s. Chance of
rain 20 percent.
.FRIDAY...Partly sunny with a slight chance of showers. A slight
chance of thunderstorms in the afternoon. Highs in the upper 80s.
Chance of rain 20 percent.

$$

MOZ042-049-050-260300-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
217 PM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.THIS AFTERNOON...Mostly sunny and much warmer. Near steady
temperature in the upper 80s. West winds around 5 mph with gusts
up to 20 mph. Heat index values up to 103.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 70s. Southwest winds around
5 mph. Heat index values up to 104 early in the evening.
.SUNDAY...Mostly sunny. Hot with highs in the mid 90s. West winds
around 5 mph. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
Southwest winds around 5 mph. Heat index values up to 109 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
107.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s.
Highs in the lower 90s. Heat index values up to 105.
.TUESDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the lower 70s. Chance of rain 20 percent.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs around 90.
Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.
.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.

$$

MOZ041-047-048-260300-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
217 PM CDT Sat Jul 25 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT MONDAY...
...EXTREME HEAT WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING...

.THIS AFTERNOON...Sunny and much warmer. Near steady temperature
in the lower 90s. West winds around 5 mph with gusts up to
20 mph. Heat index values up to 106.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. 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...Mostly sunny. Hot with highs in the upper 90s. West
winds around 5 mph. Heat index values up to 112.
.SUNDAY NIGHT...Mostly clear. Humid with lows in the upper 70s.
Southwest 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
110 in the afternoon.
.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. A slight chance of showers after
midnight. Lows in the lower 70s. Chance of rain 20 percent. Heat
index values up to 105 early in the evening.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the lower
90s. Lows around 70.
.THURSDAY...Mostly sunny. Highs in the lower 90s.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows in the lower 70s. Chance of
rain 20 percent.
.FRIDAY...Mostly sunny with a slight chance of thunderstorms. A
chance of showers, mainly in the morning. Highs around 90. Chance
of rain 30 percent.

$$

ILZ095>097-MOZ018-019-026-027-034>036-260300-
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
217 PM 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...

.THIS AFTERNOON...Mostly sunny and much warmer. Near steady
temperature in the upper 80s. West winds around 5 mph. Heat index
values up to 102.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 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. Isolated showers and thunderstorms in the
afternoon. Hot with highs in the mid 90s. Southwest winds around
5 mph. Chance of rain 20 percent. Heat index values up to 109.
.SUNDAY NIGHT...Partly cloudy. Humid with lows in the upper 70s.
Southwest winds around 5 mph. Gusts up to 20 mph after midnight.
Heat index values up to 109 early in the evening.
.MONDAY...Mostly 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...Mostly clear. Lows in the mid 70s. Heat index
values up to 110 early in the evening.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the lower
90s. Lows around 70.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the upper
80s. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.
.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.

$$

ILZ069-070-074-260300-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
217 PM 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...

.THIS AFTERNOON...Partly sunny. Highs in the mid 80s. Southwest
winds around 5 mph.
.TONIGHT...Partly cloudy. Patchy fog after midnight. Humid with
lows in the lower 70s. Light and variable winds.
.SUNDAY...Patchy fog in the morning. Mostly sunny. Humid with
highs in the lower 90s. Light and variable winds. Heat index
values up to 106.
.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 106 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the mid 90s. Southwest
winds 5 to 10 mph. Heat index values up to 114.
.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 in the evening, then clearing.
Lows in the upper 60s. Heat index values up to 100 early in the
evening.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper
80s. Lows in the upper 60s.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 60s.
.FRIDAY...Mostly sunny with a slight chance of showers. A slight
chance of thunderstorms in the afternoon. Highs in the upper 80s.
Chance of rain 20 percent.

$$

MOZ074-084-085-099-260300-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
217 PM 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...

.THIS AFTERNOON...Mostly sunny and much warmer. Near steady
temperature in the upper 80s. Southwest winds around 5 mph. Heat
index values up to 100.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the lower 70s. Light and variable
winds.
.SUNDAY...Mostly sunny. Hot 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 mid 70s. Light and variable winds,
becoming southwest around 5 mph after midnight. Heat index values
up to 106 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. Hot. Lows in the upper
70s. Highs in the mid 90s. Heat index values up to 105.
.TUESDAY NIGHT...Partly cloudy. Lows in the lower 70s. Heat index
values up to 100 early in the evening.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs around 90. Lows
in the upper 60s.
.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.

$$

MOZ051-052-060-260300-
Montgomery MO-Lincoln MO-Warren MO-
217 PM 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...

.THIS AFTERNOON...Mostly sunny and much warmer. Near steady
temperature in the upper 80s. West winds around 5 mph. Heat index
values up to 102.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 70s. Light and variable winds.
Heat index values up to 103 early in the evening.
.SUNDAY...Mostly sunny. Isolated showers and thunderstorms in the
afternoon. Hot with highs in the mid 90s. West winds around
5 mph. Chance of rain 20 percent. Heat index values up to 109.
.SUNDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
Southwest 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 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 105.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows around 70.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the upper
80s. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.
.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.

$$

ILZ058-059-098-099-260300-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
217 PM 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...

.THIS AFTERNOON...Mostly sunny. Warmer with highs in the mid 80s.
West winds around 5 mph.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the lower 70s. South winds around
5 mph in the evening, becoming light and variable.
.SUNDAY...Mostly sunny. Isolated showers and thunderstorms in the
afternoon. Humid with highs in the lower 90s. Southwest winds
around 5 mph. Chance of rain 20 percent. Heat index values up to
107.
.SUNDAY NIGHT...Partly cloudy. Isolated showers and thunderstorms
in the evening. Humid with lows in the mid 70s. Southwest winds
around 5 mph. Chance of rain 20 percent. Heat index values up to
108 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the mid 90s. Southwest
winds 5 to 10 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 THROUGH THURSDAY...Mostly clear. Lows in the upper
60s. Highs in the upper 80s.
.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.

$$

ILZ060-064-065-260300-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
217 PM 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...

.THIS AFTERNOON...Partly sunny. Highs in the lower 80s. Southwest
winds around 5 mph.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Patchy fog after midnight. 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, becoming southwest around 5 mph in the
afternoon. Heat index values up to 105.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Humid with lows in the mid 70s. South winds around
5 mph. Heat index values up to 105 early in the evening.
.MONDAY...Mostly sunny. Humid with highs in the mid 90s.
Southwest winds 5 to 10 mph. Heat index values up to 111.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the mid 70s.
Highs around 90. Heat index values up to 110.
.TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows in the mid
60s. Highs in the mid 80s.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the mid 60s. Highs in the mid
80s. Chance of rain 20 percent.

$$

ILZ079-MOZ075-260300-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
217 PM 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...

.THIS AFTERNOON...Mostly sunny and warmer. Near steady
temperature in the upper 80s. Southwest winds around 5 mph. Heat
index values up to 100.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Patchy fog after midnight. Humid with lows in the lower
70s. South winds around 5 mph in the evening, becoming light and
variable.
.SUNDAY...Mostly sunny. Isolated showers and thunderstorms in the
afternoon. Humid with highs in the mid 90s. Light and variable
winds. Chance of rain 20 percent. Heat index values up to 109.
.SUNDAY NIGHT...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...Mostly sunny. Hot with highs in the upper 90s.
Southwest winds 5 to 10 mph. Heat index values up to 113.
.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 in the evening, then becoming
mostly clear. Lows in the lower 70s. Heat index values up to
100 early in the evening.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper
80s. Lows in the upper 60s.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 60s.
.FRIDAY...Mostly sunny with a slight chance of showers. A slight
chance of thunderstorms in the afternoon. Highs in the upper 80s.
Chance of rain 20 percent.

$$

MOZ059-062-072-073-260300-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
217 PM 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...

.THIS AFTERNOON...Mostly sunny and much warmer. Near steady
temperature in the upper 80s. West winds around 5 mph. Heat index
values up to 101.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 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. West 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. 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 upper 70s.
Highs in the mid 90s. Heat index values up to 105.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the lower 70s.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs around 90. Lows
in the upper 60s.
.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.

$$

ILZ102-MOZ065-260300-
Monroe IL-Jefferson MO-
217 PM 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...

.THIS AFTERNOON...Mostly sunny and warmer. Near steady
temperature in the upper 80s. West winds around 5 mph. Heat index
values up to 100.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Humid with lows in the mid 70s. South winds around 5 mph
in the evening, becoming light and variable.
.SUNDAY...Mostly sunny. Isolated showers and thunderstorms in the
afternoon. Hot with highs in the mid 90s. Light and variable
winds. Chance of rain 20 percent. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear with isolated showers and
thunderstorms in the evening, then partly cloudy after midnight.
Humid with lows in the mid 70s. South winds around 5 mph. Chance
of rain 20 percent. 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 in the evening, then becoming
mostly clear. Lows in the lower 70s. Heat index values up to
100 early in the evening.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the upper
80s. Lows in the upper 60s.
.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.

$$