235
FPUS53 KLSX 182203
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
503 PM CDT Fri Sep 18 2026

ILZ100-101-MOZ061-063-064-190600-
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
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms this evening. Lows in the lower 70s. Southeast
winds around 5 mph. Chance of rain 20 percent. Heat index values
up to 102 early this evening.
.SATURDAY...Mostly sunny. Hot with highs in the upper 90s.
Southwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Lows in the lower 70s. South winds around 5 mph.
.SUNDAY...Mostly sunny with a slight chance of showers. A slight
chance of thunderstorms in the afternoon. Highs in the lower 90s.
West winds around 5 mph. Chance of rain 20 percent.
.SUNDAY NIGHT...Mostly cloudy with a slight chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight. Lows in the upper 60s. Northeast winds
5 to 10 mph. Chance of rain 70 percent.
.MONDAY...Showers likely. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon. Cooler
with highs around 80. Chance of rain 70 percent.
.MONDAY NIGHT...A slight chance of thunderstorms in the evening.
Mostly cloudy with a slight chance of showers. Lows around 60.
Chance of rain 20 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the lower
70s. Lows in the mid 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the upper 50s.

$$

MOZ049-190600-
Osage MO-
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms this evening. Lows in the lower 70s. South winds
around 5 mph. Chance of rain 20 percent.
.SATURDAY...Partly sunny. Hot with highs in the upper 90s.
Southwest winds 5 to 10 mph.
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 70s. Southwest
winds around 5 mph.
.SUNDAY...Partly 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 90s. West
winds around 5 mph. Chance of rain 40 percent.
.SUNDAY NIGHT...A chance of thunderstorms. Showers. Lows in the
mid 60s. Northeast winds around 5 mph. Chance of rain 80 percent.
.MONDAY...Showers likely with a slight chance of thunderstorms in
the morning, then a chance of showers and thunderstorms in the
afternoon. Cooler with highs in the upper 70s. Chance of rain
60 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers, mainly in the
evening. Lows in the upper 50s. Chance of rain 50 percent.
.TUESDAY...Mostly cloudy in the morning, then becoming partly
sunny. Highs in the lower 70s.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the lower
50s. Highs in the mid 70s.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 50s.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the upper 50s.

$$

MOZ042-190600-
Audrain MO-
Including the city of Mexico
503 PM CDT Fri Sep 18 2026

.TONIGHT...Mostly clear with a slight chance of showers and
thunderstorms this evening, then partly cloudy after midnight.
Lows in the lower 70s. Southeast winds around 5 mph. Chance of
rain 20 percent.
.SATURDAY...Partly sunny in the morning, then becoming mostly
cloudy. Highs in the lower 90s. Southwest winds 5 to 10 mph with
gusts up to 20 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a chance of showers with a slight chance of
thunderstorms after midnight. Lows in the upper 60s. Southwest
winds around 5 mph. Chance of rain 40 percent.
.SUNDAY...Showers likely. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon. Highs
in the mid 80s. West winds 5 to 10 mph. Chance of rain
70 percent.
.SUNDAY NIGHT...A chance of thunderstorms. Showers. Lows in the
lower 60s. Northeast winds 5 to 10 mph. Chance of rain
80 percent.
.MONDAY...A chance of thunderstorms. Showers likely, mainly in
the morning. Much cooler with highs around 70. Chance of rain
70 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers, mainly in the
evening. Lows in the mid 50s. Chance of rain 50 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the mid 60s.
Lows around 50.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs around 70.
Lows in the lower 50s.
.THURSDAY...Partly sunny. Highs in the lower 70s.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 50s.
Highs in the lower 70s.

$$

MOZ050-190600-
Callaway MO-
Including the city of Fulton
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms this evening. Lows in the lower 70s. Southeast
winds around 5 mph. Chance of rain 20 percent.
.SATURDAY...Partly sunny in the morning, then becoming mostly
cloudy. Hot with highs in the mid 90s. Southwest winds 5 to
10 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a chance of showers with a slight chance of
thunderstorms after midnight. Lows around 70. Southwest winds
around 5 mph. Chance of rain 30 percent.
.SUNDAY...Partly sunny with a chance of showers. A chance of
thunderstorms in the afternoon. Highs in the upper 80s. West
winds around 5 mph. Chance of rain 50 percent.
.SUNDAY NIGHT...A chance of thunderstorms. Showers. Lows in the
mid 60s. Northeast winds around 5 mph. Chance of rain 80 percent.
.MONDAY...A chance of thunderstorms. Showers likely, mainly in
the morning. Cooler with highs in the mid 70s. Chance of rain
70 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers, mainly in the
evening. Lows in the upper 50s. Chance of rain 50 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the upper
60s. Lows in the lower 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the lower
70s. Lows in the mid 50s.

$$

MOZ047-048-190600-
Moniteau MO-Cole MO-
Including the city of Jefferson City
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Mostly clear with a slight chance of showers and
thunderstorms this evening, then partly cloudy after midnight.
Lows in the mid 70s. South winds around 5 mph. Chance of rain
20 percent. Heat index values up to 101 early this evening.
.SATURDAY...Partly sunny. Hot with highs in the upper 90s.
Southwest winds 5 to 10 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a chance of showers after midnight. Lows in the lower
70s. Southwest winds around 5 mph. Chance of rain 30 percent.
.SUNDAY...Partly sunny with a chance of showers. A slight chance
of thunderstorms in the afternoon. Highs in the lower 90s. West
winds around 5 mph. Chance of rain 50 percent.
.SUNDAY NIGHT...A chance of thunderstorms. Showers. Lows in the
upper 60s. Northeast winds around 5 mph. Chance of rain
90 percent.
.MONDAY...Showers likely with a slight chance of thunderstorms in
the morning, then a chance of showers and thunderstorms in the
afternoon. Cooler with highs in the upper 70s. Chance of rain
70 percent.
.MONDAY NIGHT...Mostly cloudy with a 20 percent chance of
showers. Lows around 60.
.TUESDAY...Mostly cloudy in the morning, then becoming partly
sunny. Highs in the lower 70s.
.TUESDAY NIGHT THROUGH FRIDAY...Partly cloudy. Lows in the mid
50s. Highs in the mid 70s.

$$

MOZ041-190600-
Boone MO-
Including the city of Columbia
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TONIGHT...Mostly clear with a slight chance of showers and
thunderstorms this evening, then partly cloudy after midnight.
Lows in the lower 70s. Southeast winds around 5 mph. Chance of
rain 20 percent. Heat index values up to 101 early this evening.
.SATURDAY...Partly sunny in the morning, then becoming mostly
cloudy. Hot with highs in the mid 90s. Southwest winds 5 to
10 mph with gusts up to 20 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a chance of showers with a slight chance of
thunderstorms after midnight. Lows around 70. Southwest winds
around 5 mph. Chance of rain 40 percent.
.SUNDAY...Showers likely in the morning, then a chance of showers
and thunderstorms in the afternoon. Highs in the upper 80s. West
winds around 5 mph. Chance of rain 70 percent.
.SUNDAY NIGHT...A chance of thunderstorms. Showers. Lows in the
mid 60s. Northeast winds 5 to 10 mph. Chance of rain 80 percent.
.MONDAY...A chance of thunderstorms. Showers likely, mainly in
the morning. Cooler with highs in the lower 70s. Chance of rain
70 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers in the
evening. Lows in the upper 50s. Chance of rain 50 percent.
.TUESDAY...Mostly cloudy in the morning, then becoming partly
sunny. Highs in the upper 60s.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Partly cloudy. Lows in
the lower 50s. Highs in the lower 70s.
.THURSDAY...Partly sunny. Highs in the lower 70s.
.THURSDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Lows in the upper 50s. Chance of rain 20 percent.
.FRIDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ095>097-MOZ018-019-026-027-034>036-190600-
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
503 PM CDT Fri Sep 18 2026

.TONIGHT...Mostly clear this evening, then becoming partly
cloudy. Lows in the lower 70s. Southeast winds around 5 mph.
.SATURDAY...Partly sunny in the morning, then becoming mostly
cloudy. Highs in the lower 90s. Southwest winds 5 to 10 mph with
gusts up to 20 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a chance of showers and thunderstorms after midnight.
Lows in the upper 60s. South winds around 5 mph, becoming west
after midnight. Chance of rain 50 percent.
.SUNDAY...Showers likely. A chance of thunderstorms in the
afternoon. Cooler with highs in the lower 80s. Northwest winds
5 to 10 mph. Chance of rain 70 percent.
.SUNDAY NIGHT...Showers likely with a chance of thunderstorms in
the evening, then showers likely with a slight chance of
thunderstorms after midnight. Lows in the lower 60s. Northeast
winds 5 to 10 mph with gusts up to 20 mph. Chance of rain
70 percent.
.MONDAY...Showers likely with a chance of thunderstorms in the
morning, then a chance of showers with a slight chance of
thunderstorms in the afternoon. Cooler with highs in the upper
60s. Chance of rain 70 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers, mainly in the
evening. Lows in the mid 50s. Chance of rain 50 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the mid 60s.
Lows in the lower 50s.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the
upper 60s. Lows in the lower 50s.
.THURSDAY...Partly sunny. Highs in the lower 70s.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 50s.
Highs in the lower 70s.

$$

ILZ069-070-074-190600-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Partly cloudy with a slight chance of showers and
thunderstorms this evening, then mostly clear after midnight.
Lows in the lower 70s. Southeast winds around 5 mph. Chance of
rain 20 percent. Heat index values up to 101 early this evening.
.SATURDAY...Sunny, hot with highs in the upper 90s. Southwest
winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Lows in the lower 70s. South winds around 5 mph.
.SUNDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 90s. West winds
around 5 mph. Chance of rain 20 percent.
.SUNDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms after midnight. Lows in the upper 60s.
Northeast winds around 5 mph. Chance of rain 50 percent.
.MONDAY...Mostly cloudy. A chance of showers in the morning, then
showers likely with a chance of thunderstorms in the afternoon.
Cooler with highs in the lower 80s. Chance of rain 60 percent.
.MONDAY NIGHT...Mostly cloudy with a chance of showers with a
slight chance of thunderstorms. Lows around 60. Chance of rain
50 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the lower
70s. Lows in the mid 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the mid 50s.

$$

MOZ074-084-085-099-190600-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms this evening. Lows around 70. Light and variable
winds, becoming south around 5 mph after midnight. Chance of rain
20 percent. Heat index values up to 100 early this evening.
.SATURDAY...Mostly sunny. Hot with highs in the upper 90s.
Southwest winds around 5 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows around 70. Southwest winds around 5 mph.
.SUNDAY...Mostly sunny. Hot with highs in the mid 90s. West winds
around 5 mph.
.SUNDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms after midnight. Lows in the upper 60s. North winds
around 5 mph. Chance of rain 50 percent.
.MONDAY...Partly sunny. A chance of showers in the morning, then
showers likely with a chance of thunderstorms in the afternoon.
Not as warm with highs in the mid 80s. Chance of rain 70 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight. Lows around 60. Chance of rain
50 percent.
.TUESDAY...Mostly cloudy in the morning, then becoming partly
sunny. Cooler with highs in the mid 70s.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the mid
50s. Highs in the mid 70s.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the lower 50s.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the mid 50s.

$$

MOZ060-190600-
Warren MO-
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms this evening. Lows in the lower 70s. Light and
variable winds, becoming south around 5 mph after midnight.
Chance of rain 20 percent. Heat index values up to 101 early this
evening.
.SATURDAY...Mostly sunny in the morning, then becoming mostly
cloudy. Hot with highs in the mid 90s. Southwest winds around
5 mph.
.SATURDAY NIGHT...Partly cloudy. Lows around 70. Light and
variable winds, becoming southwest around 5 mph after midnight.
.SUNDAY...Partly sunny with a chance of showers. A chance of
thunderstorms in the afternoon. Highs around 90. West winds
around 5 mph. Chance of rain 40 percent.
.SUNDAY NIGHT...A chance of thunderstorms. Showers likely. Lows
in the mid 60s. Northeast winds around 5 mph. Chance of rain
70 percent.
.MONDAY...Showers likely with a slight chance of thunderstorms in
the morning, then a chance of showers and thunderstorms in the
afternoon. Cooler with highs in the mid 70s. Chance of rain
70 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers, mainly in the
evening. Lows in the upper 50s. Chance of rain 50 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs around 70. Lows
in the lower 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the mid 50s.

$$

MOZ051-052-190600-
Montgomery MO-Lincoln MO-
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms this evening. Lows in the lower 70s. Southeast
winds around 5 mph. Chance of rain 20 percent. Heat index values
up to 101 early this evening.
.SATURDAY...Mostly sunny in the morning, then becoming mostly
cloudy. Hot with highs in the mid 90s. Southwest winds 5 to
10 mph.
.SATURDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a slight chance of showers after midnight. Lows
around 70. Southwest winds around 5 mph. Chance of rain
20 percent.
.SUNDAY...Partly sunny with a chance of showers. A chance of
thunderstorms in the afternoon. Highs in the upper 80s. West
winds around 5 mph. Chance of rain 50 percent.
.SUNDAY NIGHT...A chance of thunderstorms. Showers likely. Lows
in the lower 60s. Northeast winds around 5 mph. Chance of rain
70 percent.
.MONDAY...A chance of thunderstorms. Showers likely, mainly in
the morning. Cooler with highs in the mid 70s. Chance of rain
70 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers, mainly in the
evening. Lows in the upper 50s. Chance of rain 50 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the upper
60s. Lows in the lower 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the lower
70s. Lows in the mid 50s.

$$

ILZ058-059-098-099-190600-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TONIGHT...Partly cloudy with a slight chance of showers and
thunderstorms this evening, then mostly clear after midnight.
Lows around 70. Southeast winds around 5 mph. Chance of rain
20 percent.
.SATURDAY...Mostly sunny. Hot with highs in the mid 90s.
Southwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Lows around 70. Southwest winds around 5 mph.
.SUNDAY...Partly sunny with a chance of showers. A chance of
thunderstorms in the afternoon. Highs in the upper 80s. Northwest
winds 5 to 10 mph. Chance of rain 50 percent.
.SUNDAY NIGHT...Mostly cloudy with a slight chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight. Lows in the lower 60s. Northeast winds
5 to 10 mph. Chance of rain 70 percent.
.MONDAY...Showers likely with a chance of thunderstorms. Cooler
with highs in the mid 70s. Chance of rain 70 percent.
.MONDAY NIGHT...Mostly cloudy with a 20 percent chance of
showers. Lows in the upper 50s.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs around 70. Lows
in the lower 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the mid 50s.

$$

ILZ060-065-190600-
Montgomery IL-Fayette IL-
Including the cities of Litchfield and Vandalia
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT THIS EVENING...

.TONIGHT...Partly cloudy. A slight chance of showers and
thunderstorms this evening. Lows in the upper 60s. Southeast
winds around 5 mph. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. Hot with highs in the mid 90s.
Southwest winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Lows around 70. South winds around 5 mph.
.SUNDAY...Partly 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 90s. Northwest
winds around 5 mph. Chance of rain 40 percent.
.SUNDAY NIGHT...Mostly cloudy with a slight chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight. Lows in the lower 60s. Northeast winds
5 to 10 mph. Chance of rain 60 percent.
.MONDAY...Showers likely. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon. Cooler
with highs in the upper 70s. Chance of rain 70 percent.
.MONDAY NIGHT...Mostly cloudy with a chance of showers with a
slight chance of thunderstorms. Lows in the upper 50s. Chance of
rain 50 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the lower
70s. Lows in the lower 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the mid 50s.

$$

ILZ064-190600-
Bond IL-
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Partly cloudy with a slight chance of showers and
thunderstorms this evening, then mostly clear after midnight.
Lows around 70. Southeast winds around 5 mph. Chance of rain
20 percent.
.SATURDAY...Mostly sunny. Hot with highs in the mid 90s.
Southwest winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Lows in the lower 70s. South winds around 5 mph.
.SUNDAY...Mostly sunny with a slight chance of showers. A slight
chance of thunderstorms in the afternoon. Highs in the lower 90s.
West winds around 5 mph. Chance of rain 20 percent.
.SUNDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening, then a chance of showers after
midnight. Lows in the mid 60s. Northeast winds around 5 mph.
Chance of rain 50 percent.
.MONDAY...Mostly cloudy. A chance of showers in the morning, then
showers likely with a chance of thunderstorms in the afternoon.
Cooler with highs in the upper 70s. Chance of rain 70 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight. Lows in the upper 50s. Chance of rain
40 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the lower
70s. Lows in the lower 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the mid 50s.

$$

ILZ079-MOZ075-190600-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Partly cloudy with a slight chance of showers and
thunderstorms this evening, then mostly clear after midnight.
Lows around 70. South winds around 5 mph. Chance of rain
20 percent. Heat index values up to 101 early this evening.
.SATURDAY...Mostly sunny. Hot with highs in the upper 90s.
Southwest winds around 5 mph.
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 70s. Southwest
winds around 5 mph.
.SUNDAY...Mostly sunny. Hot with highs in the mid 90s. West winds
around 5 mph.
.SUNDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms after midnight. Lows in the upper 60s.
North winds around 5 mph. Chance of rain 50 percent.
.MONDAY...Mostly cloudy. A chance of showers in the morning, then
showers likely with a chance of thunderstorms in the afternoon.
Cooler with highs in the mid 80s. Chance of rain 60 percent.
.MONDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight. Lows around 60. Chance of rain
50 percent.
.TUESDAY...Mostly cloudy in the morning, then becoming partly
sunny. Cooler with highs in the mid 70s.
.TUESDAY NIGHT THROUGH FRIDAY...Partly cloudy. Lows in the mid
50s. Highs in the mid 70s.

$$

MOZ059-062-072-073-190600-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms this evening. Lows in the lower 70s. Light and
variable winds, becoming south around 5 mph after midnight.
Chance of rain 20 percent.
.SATURDAY...Mostly sunny. Hot with highs in the upper 90s.
Southwest winds around 5 mph.
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 70s. Southwest
winds around 5 mph.
.SUNDAY...Mostly sunny with a slight chance of showers. A slight
chance of thunderstorms in the afternoon. Highs in the lower 90s.
West winds around 5 mph. Chance of rain 20 percent.
.SUNDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight. Lows in the mid 60s. Northeast winds around 5 mph.
Chance of rain 70 percent.
.MONDAY...Showers likely. A chance of thunderstorms in the
afternoon. Cooler with highs around 80. Chance of rain
70 percent.
.MONDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening, then a chance of showers after
midnight. Lows in the upper 50s. Chance of rain 50 percent.
.TUESDAY...Mostly cloudy in the morning, then becoming partly
sunny. Highs in the lower 70s.
.TUESDAY NIGHT THROUGH FRIDAY...Partly cloudy. Lows in the mid
50s. Highs in the mid 70s.

$$

ILZ102-MOZ065-190600-
Monroe IL-Jefferson MO-
503 PM CDT Fri Sep 18 2026

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms this evening. Lows in the lower 70s. Southeast
winds around 5 mph. Chance of rain 20 percent. Heat index values
up to 102 early this evening.
.SATURDAY...Sunny in the morning, then becoming partly sunny. Hot
with highs in the upper 90s. Southwest winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy in the evening, then clearing.
Lows in the lower 70s. Southwest winds around 5 mph.
.SUNDAY...Mostly sunny with a 20 percent chance of showers. Highs
in the mid 90s. West winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. North winds around 5 mph.
Chance of rain 50 percent.
.MONDAY...Showers likely. A chance of thunderstorms in the
afternoon. Cooler with highs in the lower 80s. Chance of rain
70 percent.
.MONDAY NIGHT...A slight chance of thunderstorms in the evening.
Mostly cloudy with a slight chance of showers. Lows in the upper
50s. Chance of rain 20 percent.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs in the lower
70s. Lows in the mid 50s.
.WEDNESDAY THROUGH FRIDAY...Partly cloudy. Highs in the mid 70s.
Lows in the mid 50s.

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