988
FPUS53 KLSX 270739
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
238 AM CDT Mon Jul 27 2026

ILZ100-101-MOZ061-063-064-271500-
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
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny. A slight chance of showers and thunderstorms this
afternoon. Hot with highs in the upper 90s. Southwest winds 5 to
10 mph. Chance of rain 20 percent. Heat index values up to 115.
.TONIGHT...Mostly clear. A slight chance of 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 114 early in the evening.
.TUESDAY...Mostly sunny. Humid with highs in the lower 90s. North
winds 5 to 10 mph. Heat index values up to 103.
.TUESDAY NIGHT...Partly cloudy. Lows around 70. Northeast winds
5 to 10 mph.
.WEDNESDAY...Sunny. Highs in the upper 80s. Northeast winds 5 to
10 mph.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the upper
60s. Highs in the upper 80s.
.THURSDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a slight chance of showers and thunderstorms after
midnight. Lows around 70. Chance of rain 20 percent.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms. Highs in the mid 80s. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Partly sunny with a chance of showers. A slight
chance of thunderstorms in the afternoon. Highs in the lower 80s.
Chance of rain 50 percent.
.SATURDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the upper 60s. Chance of
rain 20 percent.
.SUNDAY...Sunny. Highs in the mid 80s.

$$

MOZ042-049-050-271500-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...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.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the upper 70s.
West winds 5 to 10 mph. Chance of rain 20 percent. Heat index
values up to 109 early in the evening.
.TUESDAY...Mostly sunny. Humid with highs in the lower 90s. North
winds 5 to 10 mph. Heat index values up to 102.
.TUESDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows around 70. East winds 5 to
10 mph. Chance of rain 20 percent.
.WEDNESDAY...Sunny. Highs in the upper 80s. East winds around
5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.
.THURSDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms after midnight. Lows around 70. Chance of rain
40 percent.
.FRIDAY...Showers likely with a slight chance of thunderstorms in
the morning, then partly sunny with a chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s. Chance of
rain 60 percent.
.FRIDAY NIGHT...Partly cloudy with a chance of showers. A chance
of thunderstorms, mainly in the evening. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Partly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 80s. Chance of rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s.
Highs in the mid 80s.

$$

MOZ041-047-048-271500-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny, hot with highs around 100. Southwest winds 5 to
10 mph with gusts up to 20 mph. Heat index values up to 111.
.TONIGHT...Partly cloudy with a slight chance of showers and
thunderstorms in the evening, then mostly clear after midnight.
Humid with lows in the upper 70s. West winds around 5 mph. Chance
of rain 20 percent. Heat index values up to 111 early in the
evening.
.TUESDAY...Mostly sunny. Humid with highs in the mid 90s. North
winds 5 to 10 mph. Heat index values up to 104.
.TUESDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows in the lower 70s. East winds
around 5 mph. Chance of rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s. East winds
around 5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows around 70.
.THURSDAY...Mostly sunny. Highs in the lower 90s.
.THURSDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms after midnight. Lows in the lower 70s. Chance of
rain 50 percent.
.FRIDAY...Becoming partly sunny in the afternoon. A chance of
thunderstorms. Showers likely, mainly in the morning. Highs in
the mid 80s. Chance of rain 60 percent.
.FRIDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms, mainly in the evening. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Partly sunny with a slight chance of showers and
thunderstorms. Highs in the mid 80s. Chance of rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs in the mid 80s.

$$

ILZ095>097-MOZ018-019-026-027-034>036-271500-
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
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny. A slight chance of showers and thunderstorms this
afternoon. Hot with highs in the mid 90s. Southwest winds 5 to
10 mph with gusts up to 20 mph. Chance of rain 20 percent. Heat
index values up to 112.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
clear. Humid with lows in the mid 70s. West winds 5 to 10 mph,
becoming northwest after midnight. Heat index values up to
111 early in the evening.
.TUESDAY...Mostly sunny. Humid with highs in the upper 80s. North
winds 5 to 10 mph.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the upper 60s. Northeast winds around 5 mph.
.WEDNESDAY...Sunny. Highs in the upper 80s. East winds around
5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.
.THURSDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms after midnight. Lows in the upper 60s. Chance of
rain 50 percent.
.FRIDAY...Showers likely with a slight chance of thunderstorms in
the morning, then partly sunny with a chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s. Chance of
rain 60 percent.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers. A chance
of thunderstorms, mainly in the evening. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 80s. Chance of rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s.
Highs in the mid 80s.

$$

ILZ069-070-074-271500-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny. A slight chance of showers and thunderstorms this
afternoon. Hot with highs in the mid 90s. Southwest winds around
5 mph. Chance of rain 20 percent. Heat index values up to 116.
.TONIGHT...Mostly clear. A slight chance of 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 116 early in the evening.
.TUESDAY...Mostly sunny. Humid with highs around 90. North winds
5 to 10 mph. Heat index values up to 103.
.TUESDAY NIGHT...Partly cloudy. Cooler with lows in the upper
60s. Northeast winds 5 to 10 mph.
.WEDNESDAY...Sunny. Highs in the mid 80s. Northeast winds around
5 mph.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid
60s. Highs in the upper 80s.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the upper 60s. Chance of rain 20 percent.
.FRIDAY...Mostly sunny with a chance of showers in the morning,
then mostly cloudy with a chance of showers with a slight chance
of thunderstorms in the afternoon. Highs in the lower 80s. Chance
of rain 40 percent.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers. A chance
of thunderstorms, mainly in the evening. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Partly sunny with a chance of showers. A slight
chance of thunderstorms in the afternoon. Highs in the lower 80s.
Chance of rain 50 percent.
.SATURDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Lows in the mid 60s. Chance of rain
20 percent.
.SUNDAY...Mostly sunny. Highs in the mid 80s.

$$

MOZ074-084-085-099-271500-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 111.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the upper 70s. Southwest
winds around 5 mph. Chance of rain 20 percent. Heat index values
up to 107 early in the evening.
.TUESDAY...Mostly sunny. Hot with highs in the mid 90s. Northwest
winds around 5 mph. Heat index values up to 107.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy
with a chance of showers after midnight. Lows in the lower 70s.
Northeast winds around 5 mph. Chance of rain 30 percent. Heat
index values up to 101 early in the evening.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s. Northeast
winds around 5 mph.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid
60s. Highs in the upper 80s.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows in the upper 60s. Chance of
rain 20 percent.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms. Highs in the mid 80s. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Partly sunny with a slight chance of thunderstorms. A
chance of showers, mainly in the morning. Highs in the lower 80s.
Chance of rain 50 percent.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly clear after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.SUNDAY...Sunny. Highs in the mid 80s.

$$

MOZ051-052-060-271500-
Montgomery MO-Lincoln MO-Warren MO-
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
5 to 10 mph. Heat index values up to 113.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the upper 70s.
West winds around 5 mph. Chance of rain 20 percent. Heat index
values up to 111 early in the evening.
.TUESDAY...Mostly sunny. Humid with highs in the lower 90s. North
winds around 5 mph. Heat index values up to 102.
.TUESDAY NIGHT...Partly cloudy. Lows in the upper 60s. Northeast
winds around 5 mph.
.WEDNESDAY...Sunny. Highs in the upper 80s. East winds around
5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s.
.THURSDAY...Mostly sunny. Highs in the upper 80s.
.THURSDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a chance of showers and thunderstorms after midnight.
Lows in the upper 60s. Chance of rain 40 percent.
.FRIDAY...Showers likely with a slight chance of thunderstorms in
the morning, then mostly cloudy with a chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s. Chance of
rain 60 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening, then a chance of showers after
midnight. Lows in the upper 60s. Chance of rain 50 percent.
.SATURDAY...Mostly sunny with a slight chance of thunderstorms. A
chance of showers, mainly in the morning. Highs in the mid 80s.
Chance of rain 50 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 60s.
Highs in the mid 80s.

$$

ILZ058-059-098-099-271500-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny. A chance of showers and thunderstorms this
afternoon. Hot with highs in the upper 90s. Southwest winds 5 to
10 mph. Chance of rain 40 percent. Heat index values up to 114.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the mid 70s.
Southwest winds 5 to 10 mph, becoming northwest after midnight.
Chance of rain 20 percent. Heat index values up to 111 early in
the evening.
.TUESDAY...Mostly sunny. Humid with highs in the upper 80s. North
winds 5 to 10 mph.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the upper 60s. Northeast winds 5 to 10 mph.
.WEDNESDAY...Sunny. Highs in the mid 80s. Northeast winds around
5 mph.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid
60s. Highs in the upper 80s.
.THURSDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a slight chance of showers and thunderstorms after
midnight. Lows in the upper 60s. Chance of rain 20 percent.
.FRIDAY...Partly sunny with a chance of showers in the morning,
then mostly cloudy with a chance of showers with a slight chance
of thunderstorms in the afternoon. Highs in the lower 80s. Chance
of rain 50 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening, then a chance of showers with a
slight chance of thunderstorms after midnight. Lows in the mid
60s. Chance of rain 50 percent.
.SATURDAY...Mostly sunny. A chance of showers in the morning,
then a slight chance of showers and thunderstorms in the
afternoon. Highs in the lower 80s. Chance of rain 50 percent.
.SATURDAY NIGHT...Mostly clear with a slight chance of showers
and thunderstorms in the evening, then partly cloudy after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.SUNDAY...Sunny. Highs in the mid 80s.

$$

ILZ060-064-065-271500-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny. A chance of showers and thunderstorms this
afternoon. Hot with highs in the mid 90s. Southwest winds 5 to
10 mph. Chance of rain 40 percent. Heat index values up to 114.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the mid 70s.
Southwest winds around 5 mph, becoming west after midnight.
Chance of rain 20 percent. Heat index values up to 112 early in
the evening.
.TUESDAY...Mostly sunny. Humid with highs in the upper 80s. North
winds 5 to 10 mph.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Cooler with lows in the mid 60s. Northeast winds 5 to 10 mph.
.WEDNESDAY...Sunny. Highs in the mid 80s. Northeast winds 5 to
10 mph.
.WEDNESDAY NIGHT...Clear. Lows in the mid 60s.
.THURSDAY...Sunny. Highs in the mid 80s.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the upper 60s. Chance of rain 20 percent.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers
with a slight chance of thunderstorms. Highs in the lower 80s.
Lows in the upper 60s. Chance of rain 50 percent.
.SATURDAY...Mostly sunny. A slight chance of showers in the
morning, then a chance of showers with a slight chance of
thunderstorms in the afternoon. Highs in the lower 80s. Chance of
rain 50 percent.
.SATURDAY NIGHT...Mostly clear with a slight chance of showers
and thunderstorms in the evening, then partly cloudy after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.SUNDAY...Sunny. Highs in the mid 80s.

$$

ILZ079-MOZ075-271500-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 115.
.TONIGHT...Mostly clear. A slight chance of 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 115 early in the evening.
.TUESDAY...Mostly sunny. Humid with highs in the lower 90s. North
winds 5 to 10 mph. Heat index values up to 106.
.TUESDAY NIGHT...Partly cloudy with a 20 percent chance of
showers. Lows in the upper 60s. Northeast winds 5 to 10 mph. Heat
index values up to 100 early in the evening.
.WEDNESDAY...Sunny. Highs in the upper 80s. Northeast winds
around 5 mph.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid
60s. Highs in the upper 80s.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the upper 60s. Chance of rain 20 percent.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms. Highs in the mid 80s. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Partly sunny with a slight chance of thunderstorms. A
chance of showers, mainly in the morning. Highs in the lower 80s.
Chance of rain 50 percent.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
in the evening, then mostly clear after midnight. Lows in the mid
60s. Chance of rain 20 percent.
.SUNDAY...Sunny. Highs in the mid 80s.

$$

MOZ059-062-072-073-271500-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 111.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the upper 70s. Southwest
winds around 5 mph. Chance of rain 20 percent. Heat index values
up to 109 early in the evening.
.TUESDAY...Mostly sunny. Humid with highs in the lower 90s. North
winds around 5 mph. Heat index values up to 104.
.TUESDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows around 70. Northeast winds around 5 mph. Chance of
rain 20 percent.
.WEDNESDAY...Sunny. Highs in the upper 80s. East winds around
5 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s.
.THURSDAY...Mostly sunny. Highs around 90.
.THURSDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a chance of showers and thunderstorms after midnight.
Lows in the upper 60s. Chance of rain 40 percent.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms. Highs in the mid 80s. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Partly sunny with a slight chance of thunderstorms. A
chance of showers, mainly in the morning. Highs in the lower 80s.
Chance of rain 50 percent.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly clear after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.SUNDAY...Sunny. Highs in the mid 80s.

$$

ILZ102-MOZ065-271500-
Monroe IL-Jefferson MO-
238 AM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Sunny, hot with highs around 100. Southwest winds around
5 mph. Heat index values up to 114.
.TONIGHT...Mostly clear. A slight chance of 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 113 early in the evening.
.TUESDAY...Mostly sunny. Humid with highs in the lower 90s. North
winds 5 to 10 mph. Heat index values up to 106.
.TUESDAY NIGHT...Partly cloudy. Lows around 70. Northeast winds
5 to 10 mph. Heat index values up to 101 early in the evening.
.WEDNESDAY...Sunny. Highs in the upper 80s. Northeast winds
around 5 mph.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the mid
60s. Highs in the upper 80s.
.THURSDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a slight chance of showers and thunderstorms after
midnight. Lows in the upper 60s. Chance of rain 20 percent.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms. Highs in the mid 80s. Lows in the upper 60s.
Chance of rain 50 percent.
.SATURDAY...Partly sunny. A chance of showers in the morning,
then a slight chance of showers and thunderstorms in the
afternoon. Highs in the lower 80s. Chance of rain 50 percent.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly clear after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.SUNDAY...Sunny. Highs in the mid 80s.

$$