088
FPUS53 KLSX 160858
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
358 AM CDT Sun Aug 16 2026

ILZ100-101-MOZ061-063-064-161600-
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
358 AM CDT Sun Aug 16 2026

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

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the lower 90s. West winds 5 to
10 mph. Gusts up to 20 mph this morning. Chance of rain
40 percent. Heat index values up to 111 this afternoon.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
cloudy. A chance of showers and thunderstorms. Humid with lows in
the lower 70s. North winds 5 to 10 mph. Chance of rain
40 percent. Heat index values up to 107 early in the evening.
.MONDAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the upper 80s. South winds around
5 mph.
.TUESDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms after midnight. Lows in the lower 70s. Chance of
rain 50 percent.
.WEDNESDAY...Partly sunny with a slight chance of thunderstorms.
A chance of showers, mainly in the morning. Highs in the upper
80s. Chance of rain 50 percent.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of thunderstorms. A chance of showers.
Lows in the upper 60s. Chance of rain 50 percent.
.THURSDAY...Partly sunny. A chance of showers with a slight
chance of thunderstorms in the morning. Highs in the lower 80s.
Chance of rain 50 percent.
.THURSDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy with a
chance of showers after midnight. Lows in the mid 60s. Chance of
rain 30 percent.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Highs in the mid 80s.
Lows in the mid 60s.

$$

MOZ049-050-161600-
Osage MO-Callaway MO-
Including the city of Fulton
358 AM CDT Sun Aug 16 2026

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

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the lower 90s. West winds 5 to
10 mph. Chance of rain 40 percent. Heat index values up to 105.
.TONIGHT...Partly cloudy. A chance of showers and thunderstorms
in the evening. Humid with lows in the upper 60s. North winds
5 to 10 mph. Chance of rain 40 percent. Heat index values up to
100 early in the evening.
.MONDAY...Sunny. Highs in the mid 80s. North winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs around 90. South winds around 5 mph.
.TUESDAY NIGHT...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. Lows around 70. Chance
of rain 50 percent.
.WEDNESDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the upper 80s. Chance of
rain 20 percent.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of
showers and thunderstorms. Lows in the upper 60s. Highs in the
lower 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers after midnight. Lows in the mid
60s. Chance of rain 20 percent.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows in the mid 60s.
Highs in the mid 80s.

$$

MOZ042-161600-
Audrain MO-
Including the city of Mexico
358 AM CDT Sun Aug 16 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Partly sunny with a chance of showers and thunderstorms.
Highs in the mid 80s. West winds 5 to 10 mph. Chance of rain
50 percent.
.TONIGHT...Mostly cloudy with a chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Lows in the mid 60s. North winds 5 to 10 mph. Chance of rain
40 percent.
.MONDAY...Sunny. Highs in the lower 80s. North winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Mostly sunny. Highs in the mid 80s. South winds around
5 mph.
.TUESDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly cloudy with showers
likely with a chance of thunderstorms after midnight. Lows in the
upper 60s. Chance of rain 70 percent.
.WEDNESDAY...Partly sunny. A chance of showers with a slight
chance of thunderstorms in the morning. Highs in the lower 80s.
Chance of rain 30 percent.
.WEDNESDAY NIGHT...Mostly cloudy in the evening, then partly
cloudy with a chance of showers and thunderstorms after midnight.
Lows in the mid 60s. Chance of rain 40 percent.
.THURSDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the upper 70s. Chance of
rain 20 percent.
.THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers after midnight. Lows in the lower
60s. Chance of rain 20 percent.
.FRIDAY...Mostly sunny. Highs in the lower 80s.
.FRIDAY NIGHT...Mostly clear. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.

$$

MOZ041-047-048-161600-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
358 AM CDT Sun Aug 16 2026

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

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the lower 90s. Northwest winds 5 to
10 mph. Chance of rain 50 percent. Heat index values up to 104.
.TONIGHT...Partly cloudy. A chance of showers and thunderstorms
in the evening. Humid with lows in the upper 60s. North winds
5 to 10 mph. Chance of rain 30 percent.
.MONDAY...Sunny. Highs in the mid 80s. North winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the lower 90s. South winds around
5 mph. Heat index values up to 100 in the afternoon.
.TUESDAY NIGHT...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. Lows in the lower 70s.
Chance of rain 50 percent.
.WEDNESDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the upper 80s. Chance of
rain 20 percent.
.WEDNESDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy with a
chance of showers and thunderstorms after midnight. Lows in the
upper 60s. Chance of rain 50 percent.
.THURSDAY...Partly sunny. A chance of showers and thunderstorms
in the morning. Highs in the mid 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the mid 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows in the upper 60s.
Highs in the upper 80s.

$$

ILZ095>097-MOZ018-019-026-027-034-161600-
Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO-
Monroe MO-
Including the cities of Quincy, Mount Sterling, Pittsfield,
and Hannibal
358 AM CDT Sun Aug 16 2026

.TODAY...Mostly cloudy with showers and thunderstorms likely this
morning, then partly sunny with a chance of showers and
thunderstorms this afternoon. Highs in the mid 80s. Northwest
winds 5 to 10 mph. Gusts up to 20 mph this morning. Chance of
rain 60 percent.
.TONIGHT...Mostly cloudy with a chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Lows in the mid 60s. North winds 5 to 10 mph. Gusts up to 25 mph
in the evening. Chance of rain 30 percent.
.MONDAY...Sunny. Highs in the lower 80s. North winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Mostly sunny. Highs in the mid 80s. Southwest winds
around 5 mph.
.TUESDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms in the evening, then mostly cloudy with showers
likely with a slight chance of thunderstorms after midnight. Lows
in the upper 60s. Chance of rain 70 percent.
.WEDNESDAY...Mostly cloudy with a chance of showers with a slight
chance of thunderstorms in the morning, then partly sunny in the
afternoon. Highs in the lower 80s. Chance of rain 40 percent.
.WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. A slight chance of showers and thunderstorms. Lows
in the mid 60s. Chance of rain 20 percent.
.THURSDAY...Partly sunny. Highs in the upper 70s.
.THURSDAY NIGHT...Partly cloudy with a 20 percent chance of
showers. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the lower 80s.
.FRIDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.

$$

MOZ035-036-161600-
Ralls MO-Pike MO-
Including the city of Bowling Green
358 AM CDT Sun Aug 16 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Mostly cloudy this morning, then becoming partly sunny.
A chance of showers and thunderstorms. Highs in the upper 80s.
West winds around 5 mph. Gusts up to 20 mph this morning. Chance
of rain 50 percent. Heat index values up to 100.
.TONIGHT...Mostly cloudy with a chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Lows in the upper 60s. North winds 5 to 10 mph. Gusts up to
25 mph in the evening. Chance of rain 30 percent.
.MONDAY...Sunny. Highs in the lower 80s. North winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the mid 80s. Southwest winds around
5 mph.
.TUESDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly cloudy with showers
likely with a chance of thunderstorms after midnight. Lows around
70. Chance of rain 70 percent.
.WEDNESDAY...Mostly cloudy with a chance of showers and
thunderstorms in the morning, then partly sunny in the afternoon.
Highs in the lower 80s. Chance of rain 40 percent.
.WEDNESDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy with a
chance of showers and thunderstorms after midnight. Lows in the
mid 60s. Chance of rain 40 percent.
.THURSDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning. Highs around 80. Chance of rain
20 percent.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the lower 60s. Chance of rain 20 percent.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Highs in the lower 80s.
Lows in the mid 60s.

$$

ILZ069-070-074-161600-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
358 AM CDT Sun Aug 16 2026

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

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the lower 90s. West winds 5 to
10 mph. Gusts up to 20 mph this morning. Chance of rain
30 percent. Heat index values up to 112 this afternoon.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
cloudy. A chance of showers and thunderstorms. Humid with lows in
the lower 70s. Northwest winds around 5 mph. Chance of rain
50 percent. Heat index values up to 109 early in the evening.
.MONDAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
in the mid 60s. North winds around 5 mph in the evening, becoming
light and variable.
.TUESDAY...Sunny. Highs in the upper 80s. Light and variable
winds.
.TUESDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms after midnight. Lows around 70. Chance of rain
50 percent.
.WEDNESDAY...Partly sunny with a slight chance of thunderstorms.
A chance of showers, mainly in the morning. Highs in the upper
80s. Chance of rain 50 percent.
.WEDNESDAY NIGHT...Partly cloudy with a chance of thunderstorms.
A chance of showers. Lows in the upper 60s. Chance of rain
50 percent.
.THURSDAY...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.
.THURSDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy with a
chance of showers after midnight. Lows in the mid 60s. Chance of
rain 30 percent.
.FRIDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 80s. Chance of
rain 20 percent.
.FRIDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.

$$

MOZ074-084-085-099-161600-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
358 AM CDT Sun Aug 16 2026

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

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this afternoon. Hot with highs in the upper 90s.
West winds 5 to 10 mph. Gusts up to 20 mph this morning. Chance
of rain 20 percent. Heat index values up to 110.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
cloudy. A chance of showers and thunderstorms. Humid with lows in
the lower 70s. West winds around 5 mph with gusts up to 20 mph,
becoming north after midnight. Chance of rain 40 percent. Heat
index values up to 104 early in the evening.
.MONDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Not as warm. Humid with highs in
the upper 80s. North winds around 5 mph. Chance of rain
20 percent.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the lower 90s. Light and variable
winds. Heat index values up to 100 in the afternoon.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. A slight chance of
showers and thunderstorms. Lows around 70. Highs in the lower
90s. Chance of rain 20 percent. Heat index values up to 105.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of
showers and thunderstorms. Lows in the upper 60s. Highs in the
mid 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms, mainly in the evening. Lows in the mid 60s. Chance
of rain 40 percent.
.FRIDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the mid 80s. Chance of
rain 20 percent.
.FRIDAY 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.
.SATURDAY...Sunny. Highs in the mid 80s.

$$

MOZ051-060-161600-
Montgomery MO-Warren MO-
358 AM CDT Sun Aug 16 2026

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

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs around 90. West winds around 5 mph.
Gusts up to 20 mph this morning. Chance of rain 40 percent. Heat
index values up to 107 this afternoon.
.TONIGHT...Partly cloudy. A chance of showers and thunderstorms
in the evening. Humid with lows in the upper 60s. North winds
5 to 10 mph. Chance of rain 30 percent. Heat index values up to
101 early in the evening.
.MONDAY...Sunny. Highs in the lower 80s. North winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the upper 80s. South winds around
5 mph in the morning, becoming light and variable.
.TUESDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms after midnight. Lows in the upper 60s. Chance of
rain 50 percent.
.WEDNESDAY...Partly sunny. A chance of showers with a slight
chance of thunderstorms in the morning. Highs in the mid 80s.
Chance of rain 50 percent.
.WEDNESDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy with a
chance of showers and thunderstorms after midnight. Lows in the
mid 60s. Chance of rain 50 percent.
.THURSDAY...Partly sunny. A chance of showers and thunderstorms
in the morning. Highs in the lower 80s. Chance of rain
50 percent.
.THURSDAY NIGHT...Partly cloudy in the evening, then clearing. A
slight chance of thunderstorms in the evening. A slight chance of
showers. Lows in the lower 60s. Chance of rain 20 percent.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Highs in the mid 80s.
Lows in the lower 60s.

$$

MOZ052-161600-
Lincoln MO-
358 AM CDT Sun Aug 16 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Partly sunny. A chance of showers and thunderstorms,
mainly this morning. Highs in the upper 80s. West winds around
5 mph. Gusts up to 20 mph this morning. Chance of rain
40 percent. Heat index values up to 106.
.TONIGHT...Partly cloudy. A chance of showers and thunderstorms
in the evening. Humid with lows in the upper 60s. North winds
around 5 mph. Gusts up to 20 mph in the evening. Chance of rain
30 percent. Heat index values up to 101 early in the evening.
.MONDAY...Sunny. Highs in the mid 80s. North winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the upper 80s. South winds around
5 mph.
.TUESDAY NIGHT...Partly cloudy. Showers likely with a chance of
thunderstorms after midnight. Lows around 70. Chance of rain
60 percent.
.WEDNESDAY...Partly sunny. A chance of showers with a slight
chance of thunderstorms in the morning. Highs in the mid 80s.
Chance of rain 50 percent.
.WEDNESDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy with a
chance of showers and thunderstorms after midnight. Lows in the
mid 60s. Chance of rain 40 percent.
.THURSDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the lower 80s. Chance of
rain 20 percent.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the lower 60s. Chance of rain 20 percent.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Highs in the mid 80s.
Lows in the mid 60s.

$$

ILZ058-059-098-099-161600-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
358 AM CDT Sun Aug 16 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Mostly cloudy with a chance of showers and thunderstorms
this morning, then partly sunny with a slight chance of showers
and thunderstorms this afternoon. Highs in the upper 80s. West
winds 5 to 10 mph. Gusts up to 20 mph this morning. Chance of
rain 50 percent. Heat index values up to 102.
.TONIGHT...Partly cloudy. A chance of showers and thunderstorms,
mainly in the evening. Humid with lows in the upper 60s. North
winds 5 to 10 mph. Chance of rain 30 percent.
.MONDAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the lower 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the upper 80s. Southwest winds around
5 mph.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A slight chance of thunderstorms. A slight chance
of showers in the evening, then showers likely after midnight.
Lows in the upper 60s. Chance of rain 70 percent.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
sunny. A slight chance of thunderstorms. A chance of showers,
mainly in the morning. Highs in the mid 80s. Chance of rain
50 percent.
.WEDNESDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Chance of rain 40 percent.
.THURSDAY...Partly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 80s. Chance of rain 20 percent.
.THURSDAY NIGHT...A slight chance of thunderstorms in the
evening. Partly cloudy with a slight chance of showers. Lows in
the lower 60s. Chance of rain 20 percent.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the lower 80s.
Lows in the lower 60s.
.SATURDAY...Sunny. Highs in the mid 80s.

$$

ILZ060-064-065-161600-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
358 AM CDT Sun Aug 16 2026

...HEAT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TODAY...Mostly cloudy with a chance of showers and thunderstorms
this morning, then partly sunny with a slight chance of showers
and thunderstorms this afternoon. Highs in the upper 80s. West
winds 5 to 10 mph with gusts up to 20 mph. Chance of rain
50 percent. Heat index values up to 105 this afternoon.
.TONIGHT...Partly cloudy with a chance of showers and
thunderstorms. Humid with lows around 70. Northwest winds around
5 mph. Chance of rain 50 percent. Heat index values up to
101 early in the evening.
.MONDAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.MONDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the lower 60s. North winds around 5 mph in
the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the mid 80s. Light and variable winds,
becoming southwest around 5 mph in the afternoon.
.TUESDAY NIGHT...Partly cloudy with a slight chance of
thunderstorms. A slight chance of showers in the evening, then a
chance of showers after midnight. Lows in the upper 60s. Chance
of rain 50 percent.
.WEDNESDAY...Partly 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.
.WEDNESDAY NIGHT...Partly cloudy with a chance of thunderstorms.
A chance of showers. Lows in the mid 60s. Chance of rain
50 percent.
.THURSDAY...Partly sunny. A slight chance of showers and
thunderstorms in the morning. Highs around 80. Chance of rain
20 percent.
.THURSDAY NIGHT...A slight chance of thunderstorms in the
evening. Partly cloudy with a slight chance of showers. Lows in
the lower 60s. Chance of rain 20 percent.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the lower 80s.
Lows in the lower 60s.
.SATURDAY...Sunny. Highs in the lower 80s.

$$

ILZ079-MOZ075-161600-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
358 AM CDT Sun Aug 16 2026

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

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this afternoon. Hot with highs in the mid 90s. West
winds 5 to 10 mph. Chance of rain 20 percent. Heat index values
up to 115 this afternoon.
.TONIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Humid with lows in the lower 70s. Northwest winds
around 5 mph. Chance of rain 40 percent. Heat index values up to
109 early in the evening.
.MONDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Not as warm. Humid with highs in
the mid 80s. North winds 5 to 10 mph. Chance of rain 20 percent.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs in the upper 80s. Light and variable
winds.
.TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy
with a chance of showers and thunderstorms after midnight. Lows
around 70. Chance of rain 40 percent.
.WEDNESDAY...Mostly sunny with a slight chance of thunderstorms.
A chance of showers, mainly in the morning. Highs around 90.
Chance of rain 50 percent. Heat index values up to 105 in the
afternoon.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of
showers and thunderstorms. Lows in the upper 60s. Highs in the
lower 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy with a
chance of showers after midnight. Lows in the mid 60s. Chance of
rain 30 percent.
.FRIDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the lower 80s. Chance of rain 20 percent.
.FRIDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the mid 60s.
.SATURDAY...Sunny. Highs in the mid 80s.

$$

MOZ059-062-072-073-161600-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
358 AM CDT Sun Aug 16 2026

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

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

$$

ILZ102-MOZ065-161600-
Monroe IL-Jefferson MO-
358 AM CDT Sun Aug 16 2026

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

.TODAY...Partly sunny with a slight chance of showers and
thunderstorms. Hot with highs in the mid 90s. West winds around
5 mph. Gusts up to 20 mph this morning. Chance of rain
20 percent. Heat index values up to 114 this afternoon.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
cloudy. A chance of showers and thunderstorms. Humid with lows in
the lower 70s. North winds around 5 mph. Gusts up to 20 mph in
the evening. Chance of rain 40 percent. Heat index values up to
108 early in the evening.
.MONDAY...Mostly sunny. Humid with highs in the mid 80s. North
winds 5 to 10 mph.
.MONDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
around 5 mph in the evening, becoming light and variable.
.TUESDAY...Sunny. Highs around 90. Light and variable winds. Heat
index values up to 100 in the afternoon.
.TUESDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms after midnight. Lows around 70. Chance of rain
50 percent.
.WEDNESDAY...Partly sunny with a slight chance of thunderstorms.
A chance of showers, mainly in the morning. Highs in the upper
80s. Chance of rain 50 percent. Heat index values up to 100 in
the afternoon.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of
showers and thunderstorms. Lows in the upper 60s. Highs in the
lower 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy with a
chance of showers after midnight. Lows in the mid 60s. Chance of
rain 30 percent.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the mid 80s.
Lows in the mid 60s.
.SATURDAY...Sunny. Highs in the mid 80s.

$$