532
FPUS53 KLSX 130928
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
428 AM CDT Thu Aug 13 2026

ILZ100-101-MOZ061-063-064-131700-
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
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Hot with highs in the mid 90s. South winds
around 5 mph. Chance of rain 30 percent. Heat index values up to
114 this afternoon.
.TONIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the mid 70s.
Southeast winds around 5 mph. Chance of rain 20 percent. Heat
index values up to 113 early in the evening.
.FRIDAY...Mostly sunny. Hot with highs in the upper 90s. South
winds around 5 mph. Heat index values up to 114 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the upper 70s.
South winds around 5 mph. Heat index values up to 114 early in
the evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 111.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the upper
70s. Highs in the upper 90s. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming mostly
cloudy. A chance of showers and thunderstorms. Lows in the mid
70s. Chance of rain 50 percent. Heat index values up to 110 early
in the evening.
.MONDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. Not as warm with highs in the
upper 80s. Chance of rain 50 percent.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the upper 60s. Chance of rain 20 percent.
.TUESDAY...Mostly sunny. Highs in the upper 80s.
.TUESDAY NIGHT...Mostly clear. A slight chance of showers after
midnight. Lows in the lower 70s. Chance of rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index
values up to 100 in the afternoon.

$$

MOZ049-050-131700-
Osage MO-Callaway MO-
Including the city of Fulton
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. Hot with highs in the upper 90s. South
winds 5 to 10 mph. Heat index values up to 110 this afternoon.
.TONIGHT...Mostly clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 109 early in the evening.
.FRIDAY...Mostly sunny. Hot with highs in the upper 90s. South
winds 5 to 10 mph. Heat index values up to 110 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 109 early in the evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph. Heat index values up to 106 in the afternoon.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers and thunderstorms. Lows in the
lower 70s. Chance of rain 50 percent. Heat index values up to
105 early in the evening.
.MONDAY...Partly sunny with a slight chance of showers and
thunderstorms. Not as warm with highs in the mid 80s. Chance of
rain 20 percent.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows in the upper 60s. Chance of
rain 20 percent.
.TUESDAY...Mostly sunny. Highs in the upper 80s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers and thunderstorms after midnight.
Lows in the lower 70s. Chance of rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s.

$$

MOZ042-131700-
Audrain MO-
Including the city of Mexico
428 AM CDT Thu Aug 13 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this morning. Highs in the lower 90s. South winds
5 to 10 mph. Chance of rain 20 percent. Heat index values up to
106 this afternoon.
.TONIGHT...Mostly clear in the evening, then partly cloudy with a
slight chance of showers and thunderstorms after midnight. Humid
with lows in the mid 70s. Southeast winds 5 to 10 mph. Chance of
rain 20 percent. Heat index values up to 106 early in the
evening.
.FRIDAY...Mostly sunny. Humid with highs in the mid 90s. South
winds 5 to 10 mph. Heat index values up to 106 in the afternoon.
.FRIDAY NIGHT...Mostly clear. A slight chance of showers after
midnight. Humid with lows in the mid 70s. South winds around
5 mph. Chance of rain 20 percent. Heat index values up to
106 early in the evening.
.SATURDAY...Mostly sunny. Highs in the mid 90s. Southwest winds
5 to 10 mph with gusts up to 20 mph. Heat index values up to 103.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 105 early in the evening.
.SUNDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 90s. Chance of
rain 20 percent. Heat index values up to 100.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the upper 60s. Chance of rain 50 percent.
Heat index values up to 100 early in the evening.
.MONDAY...Partly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 80s. Chance of rain 20 percent.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.TUESDAY...Mostly sunny. Highs in the mid 80s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers and thunderstorms after midnight.
Lows in the upper 60s. Chance of rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s.

$$

MOZ041-047-048-131700-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. Hot with highs in the upper 90s. South
winds 5 to 10 mph. Heat index values up to 111 this afternoon.
.TONIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 110 early in the evening.
.FRIDAY...Mostly sunny. Hot with highs in the upper 90s. South
winds around 5 mph. Heat index values up to 110 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 109 early in the evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds 5 to 10 mph. Heat index values up to 108 in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index
values up to 105 early in the evening.
.SUNDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index
values up to 105 in the afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers and thunderstorms. Lows in the
lower 70s. Chance of rain 50 percent. Heat index values up to
105 early in the evening.
.MONDAY...Partly sunny with a slight chance of showers and
thunderstorms. Highs in the upper 80s. Chance of rain 20 percent.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows around 70. Chance of rain
20 percent.
.TUESDAY...Mostly sunny. Highs in the upper 80s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers and thunderstorms after midnight.
Lows in the lower 70s. Chance of rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index
values up to 100 in the afternoon.

$$

ILZ095>097-MOZ018-019-026-027-131700-
Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO-
Including the cities of Quincy, Mount Sterling, Pittsfield,
and Hannibal
428 AM CDT Thu Aug 13 2026

.TODAY...Mostly cloudy with a chance of showers and thunderstorms
this morning, then mostly sunny with a slight chance of showers
and thunderstorms this afternoon. Highs in the lower 90s.
Southeast winds 5 to 10 mph. Chance of rain 50 percent. Heat
index values up to 109 this afternoon.
.TONIGHT...Mostly clear with a slight chance of showers and
thunderstorms in the evening, then partly cloudy with a chance of
showers and thunderstorms after midnight. Humid with lows in the
lower 70s. East winds 5 to 10 mph. Chance of rain 50 percent.
Heat index values up to 109 early in the evening.
.FRIDAY...Mostly sunny. A chance of showers with a slight chance
of thunderstorms in the morning. Humid with highs in the lower
90s. Southeast winds around 5 mph. Chance of rain 40 percent.
Heat index values up to 109 in the afternoon.
.FRIDAY NIGHT...Partly cloudy. A chance of showers with a slight
chance of thunderstorms after midnight. Humid with lows in the
mid 70s. Southeast winds around 5 mph. Chance of rain 50 percent.
Heat index values up to 109 early in the evening.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Humid with highs in the lower 90s.
Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of
rain 20 percent. Heat index values up to 107 in the afternoon.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the mid 70s. Highs around 90.
Chance of rain 20 percent. Heat index values up to 105.
.SUNDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms, mainly in the evening. Lows in the upper 60s.
Chance of rain 50 percent. Heat index values up to 100 early in
the evening.
.MONDAY THROUGH TUESDAY...Partly cloudy. Highs in the mid 80s.
Lows in the mid 60s.
.TUESDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms after midnight. Lows in the upper 60s. Chance of
rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s.

$$

MOZ034>036-131700-
Monroe MO-Ralls MO-Pike MO-
Including the city of Bowling Green
428 AM CDT Thu Aug 13 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. A chance of showers and thunderstorms this
morning. Highs in the lower 90s. South winds 5 to 10 mph. Chance
of rain 30 percent. Heat index values up to 108 this afternoon.
.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
Humid with lows in the mid 70s. Southeast winds 5 to 10 mph.
Chance of rain 40 percent. Heat index values up to 109 early in
the evening.
.FRIDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Humid with highs in the mid 90s.
South winds around 5 mph. Chance of rain 20 percent. Heat index
values up to 109 in the afternoon.
.FRIDAY NIGHT...Mostly clear in the evening, then partly cloudy
with a chance of showers with a slight chance of thunderstorms
after midnight. Humid with lows in the mid 70s. South winds
around 5 mph. Chance of rain 40 percent. Heat index values up to
109 early in the evening.
.SATURDAY...Mostly sunny. A slight chance of showers in the
morning. 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 106 in the afternoon.
.SATURDAY NIGHT AND SUNDAY...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.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows around 70. Chance of rain 50 percent. Heat
index values up to 100 early in the evening.
.MONDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 80s. Chance of
rain 20 percent.
.MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows in the upper 60s.
Highs in the mid 80s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers and thunderstorms after midnight.
Lows around 70. Chance of rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s.

$$

ILZ069-074-131700-
Clinton IL-Washington IL-
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the mid 90s. South winds around
5 mph. Chance of rain 30 percent. Heat index values up to
116 this afternoon.
.TONIGHT...Partly cloudy with a slight chance of showers and
thunderstorms in the evening, then mostly clear after midnight.
Humid with lows in the mid 70s. Southeast winds around 5 mph.
Chance of rain 20 percent. Heat index values up to 114 early in
the evening.
.FRIDAY...Mostly sunny. Hot with highs in the upper 90s. South
winds around 5 mph. Heat index values up to 116 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
South winds around 5 mph. Heat index values up to 115 early in
the evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 112.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the upper
70s. Highs in the upper 90s. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. A chance of showers and thunderstorms. Lows in the lower
70s. Chance of rain 40 percent. Heat index values up to 110 early
in the evening.
.MONDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. Not as warm with highs in the
upper 80s. Chance of rain 40 percent.
.MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows in the upper 60s.
Highs in the upper 80s.
.TUESDAY NIGHT...Mostly clear. Lows around 70.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index
values up to 100.

$$

ILZ070-131700-
Marion IL-
Including the cities of Centralia and Salem
428 AM CDT Thu Aug 13 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the lower 90s. South winds around
5 mph. Chance of rain 30 percent. Heat index values up to
110 this afternoon.
.TONIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the mid 70s.
Southeast winds around 5 mph. Chance of rain 20 percent. Heat
index values up to 108 early in the evening.
.FRIDAY...Mostly sunny. Hot with highs in the mid 90s. South
winds around 5 mph. Heat index values up to 111 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
Southeast winds around 5 mph. Heat index values up to 108 early
in the evening.
.SATURDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 110.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the upper
70s. Highs in the mid 90s. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. A chance of showers and thunderstorms. Lows in the lower
70s. Chance of rain 40 percent. Heat index values up to 105 early
in the evening.
.MONDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. Highs in the upper 80s. Chance of
rain 40 percent.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 60s.
.TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s.
Lows in the upper 60s.
.WEDNESDAY...Mostly sunny. Highs around 90.

$$

MOZ074-084-085-099-131700-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. Hot with highs in the mid 90s. Southwest
winds around 5 mph. Heat index values up to 108.
.TONIGHT...Mostly clear. Lows in the mid 70s. South winds around
5 mph. Heat index values up to 105 early in the evening.
.FRIDAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 109.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 106 early in the evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 107.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the upper 90s. Heat index values up to 110.
.SUNDAY NIGHT...Partly cloudy with a slight chance of showers and
thunderstorms. Lows in the mid 70s. Chance of rain 20 percent.
Heat index values up to 105 early in the evening.
.MONDAY AND MONDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms. Highs around 90. Lows in the upper 60s. Chance of
rain 50 percent. Heat index values up to 105.
.TUESDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 80s. Chance of
rain 20 percent.
.TUESDAY NIGHT...Mostly clear. Lows around 70.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index
values up to 100 in the afternoon.

$$

MOZ051-060-131700-
Montgomery MO-Warren MO-
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. A chance of showers and thunderstorms this
morning. Hot with highs in the mid 90s. South winds around 5 mph.
Chance of rain 30 percent. Heat index values up to 112 this
afternoon.
.TONIGHT...Mostly clear with a slight chance of 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 111 early in the
evening.
.FRIDAY...Mostly sunny. Hot with highs in the upper 90s. South
winds around 5 mph. Heat index values up to 112 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
South winds around 5 mph. Heat index values up to 112 early in
the evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 109 in the afternoon.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the mid 90s. Heat index values up to 110.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers and thunderstorms. Lows around
70. Chance of rain 50 percent. Heat index values up to 105 early
in the evening.
.MONDAY...Partly sunny with a slight chance of showers and
thunderstorms. Not as warm with highs in the mid 80s. Chance of
rain 20 percent.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.TUESDAY...Mostly sunny. Highs in the mid 80s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers and thunderstorms after midnight.
Lows in the upper 60s. Chance of rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs around 90. Heat index values up
to 100 in the afternoon.

$$

MOZ052-131700-
Lincoln MO-
428 AM CDT Thu Aug 13 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the mid 90s. South winds around
5 mph. Chance of rain 30 percent. Heat index values up to
112 this afternoon.
.TONIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the mid 70s.
Southeast winds around 5 mph. Chance of rain 20 percent. Heat
index values up to 111 early in the evening.
.FRIDAY...Mostly sunny. Hot with highs in the mid 90s. Southeast
winds around 5 mph, becoming southwest around 5 mph in the
afternoon. Heat index values up to 112 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
South winds around 5 mph. Heat index values up to 112 early in
the evening.
.SATURDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 110 in the afternoon.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 70s.
Highs in the mid 90s. Heat index values up to 110.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers and thunderstorms. Lows in the
lower 70s. Chance of rain 50 percent. Heat index values up to
105 early in the evening.
.MONDAY...Partly sunny with a slight chance of showers and
thunderstorms. Highs in the mid 80s. Chance of rain 20 percent.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the upper 60s. Chance of rain 20 percent.
.TUESDAY...Mostly sunny. Highs in the mid 80s.
.TUESDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms after midnight. Lows around 70. Chance of rain
20 percent.
.WEDNESDAY...Mostly sunny. Highs around 90.

$$

ILZ058-059-098-099-131700-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
428 AM CDT Thu Aug 13 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the lower 90s. Southeast winds
around 5 mph. Chance of rain 30 percent. Heat index values up to
109 this afternoon.
.TONIGHT...Partly cloudy with a slight chance of showers and
thunderstorms. Humid with lows in the lower 70s. Southeast winds
5 to 10 mph. Chance of rain 20 percent. Heat index values up to
108 early in the evening.
.FRIDAY...Mostly sunny. Humid with highs in the mid 90s.
Southeast winds around 5 mph, becoming south in the afternoon.
Heat index values up to 111 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
Southeast winds around 5 mph. Heat index values up to 110 early
in the evening.
.SATURDAY...Sunny, hot with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 108 in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 105 early in the evening.
.SUNDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 90s. Chance of
rain 20 percent. Heat index values up to 105.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers and thunderstorms. Lows around
70. Chance of rain 50 percent. Heat index values up to 105 early
in the evening.
.MONDAY...Partly sunny with a slight chance of showers and
thunderstorms. Highs in the mid 80s. Chance of rain 20 percent.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.TUESDAY...Sunny. Highs in the mid 80s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers and thunderstorms after midnight.
Lows in the upper 60s. Chance of rain 20 percent.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s.

$$

ILZ060-064-065-131700-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
428 AM CDT Thu Aug 13 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the lower 90s. Southeast winds
around 5 mph. Chance of rain 30 percent. Heat index values up to
109 this afternoon.
.TONIGHT...Partly cloudy with a slight chance of showers and
thunderstorms. Humid with lows in the lower 70s. East winds
around 5 mph. Chance of rain 20 percent. Heat index values up to
107 early in the evening.
.FRIDAY...Mostly sunny. Humid with highs in the lower 90s.
Southeast winds around 5 mph, becoming south in the afternoon.
Heat index values up to 111 in the afternoon.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
Southeast winds around 5 mph. Heat index values up to 110 early
in the evening.
.SATURDAY...Sunny with highs in the mid 90s. Southwest winds
around 5 mph. Heat index values up to 110 in the afternoon.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 70s.
Highs in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming mostly
cloudy. A chance of showers and thunderstorms. Lows in the lower
70s. Chance of rain 40 percent. Heat index values up to 105 early
in the evening.
.MONDAY...Partly sunny with a slight chance of showers and
thunderstorms. Highs in the mid 80s. Chance of rain 20 percent.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the mid 80s.
Lows in the upper 60s.
.WEDNESDAY...Mostly sunny. Highs in the upper 80s.

$$

ILZ079-MOZ075-131700-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this morning. Hot with highs in the mid 90s. South
winds around 5 mph. Chance of rain 20 percent. Heat index values
up to 114 this afternoon.
.TONIGHT...Mostly clear. Humid with lows in the mid 70s. South
winds 5 to 10 mph. Heat index values up to 112 early in the
evening.
.FRIDAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 114.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
South winds around 5 mph. Heat index values up to 113 early in
the evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 111.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the upper 90s. Heat index values up to 110.
.SUNDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms, mainly in the evening. Lows in the lower 70s.
Chance of rain 30 percent. Heat index values up to 110 early in
the evening.
.MONDAY...Partly sunny. A chance of showers and thunderstorms in
the afternoon. Not as warm with highs in the upper 80s. Chance of
rain 40 percent. Heat index values up to 100.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Lows in the upper 60s. Chance of
rain 20 percent.
.TUESDAY...Mostly sunny. Highs in the upper 80s.
.TUESDAY NIGHT...Mostly clear. Lows around 70.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index
values up to 100.

$$

MOZ059-062-072-073-131700-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny. Hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 110.
.TONIGHT...Mostly clear. Lows in the upper 70s. South winds
around 5 mph. Heat index values up to 109 early in the evening.
.FRIDAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 111.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 70s. South winds
around 5 mph. Heat index values up to 110 early in the evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph. Heat index values up to 108.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the upper 90s. Heat index values up to 110.
.SUNDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 40 percent.
Heat index values up to 105 early in the evening.
.MONDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. Not as warm with highs in the
upper 80s. Chance of rain 50 percent.
.MONDAY NIGHT AND TUESDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows in the upper 60s. Highs in the
upper 80s. Chance of rain 20 percent.
.TUESDAY NIGHT...Mostly clear. Lows around 70.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index
values up to 100 in the afternoon.

$$

ILZ102-MOZ065-131700-
Monroe IL-Jefferson MO-
428 AM CDT Thu Aug 13 2026

...EXTREME HEAT WARNING IN EFFECT UNTIL 9 PM CDT SATURDAY...

.TODAY...Mostly sunny with a slight chance of showers and
thunderstorms. Hot with highs in the upper 90s. South winds
around 5 mph. Chance of rain 20 percent. Heat index values up to
115.
.TONIGHT...Partly cloudy. Humid with lows in the mid 70s. South
winds around 5 mph. Heat index values up to 112 early in the
evening.
.FRIDAY...Sunny, hot with highs in the upper 90s. Southwest winds
around 5 mph. Heat index values up to 115.
.FRIDAY NIGHT...Mostly clear. Humid with lows in the mid 70s.
South winds around 5 mph. Heat index values up to 113 early in
the evening.
.SATURDAY...Sunny, hot with highs around 100. Southwest winds
around 5 mph. Heat index values up to 111.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the upper 90s. Heat index values up to 110.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers and thunderstorms. Lows in the
lower 70s. Chance of rain 40 percent. Heat index values up to
110 early in the evening.
.MONDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon. Not as warm with highs in the
upper 80s. Chance of rain 40 percent. Heat index values up to
100.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Lows in the upper 60s. Chance of
rain 20 percent.
.TUESDAY...Mostly sunny. Highs in the upper 80s.
.TUESDAY NIGHT...Mostly clear. Lows around 70.
.WEDNESDAY...Mostly sunny. Highs in the lower 90s. Heat index
values up to 105 in the afternoon.

$$