784
FPUS53 KLSX 171034
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
533 AM CDT Fri Jul 17 2026

ILZ100-101-MOZ061-063-064-171800-
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
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this morning, then a chance of showers and
thunderstorms this afternoon. Highs in the lower 90s. West winds
5 to 10 mph. Chance of rain 30 percent. Heat index values up to
100.
.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. Chance of rain 20 percent. Heat
index values up to 101 early in the evening.
.SATURDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Humid with highs in the lower 90s. West winds
5 to 10 mph. Chance of rain 20 percent. Heat index values up to
103.
.SATURDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms in the evening, then mostly clear with a slight
chance of showers and thunderstorms after midnight. Humid with
lows in the mid 70s. West winds 5 to 10 mph. Chance of rain
30 percent. Heat index values up to 102 early in the evening.
.SUNDAY...Sunny. A slight chance of showers and thunderstorms in
the afternoon. Humid with highs in the lower 90s. North winds
around 5 mph. Chance of rain 20 percent. Heat index values up to
103.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. Heat index
values up to 100 early in the evening.
.MONDAY THROUGH TUESDAY...Partly cloudy. Highs in the mid 90s.
Lows in the mid 70s. Heat index values up to 105.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows around 70.
Highs in the mid 80s.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 60s.
.THURSDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the mid 80s. Chance of rain 20 percent.

$$

MOZ042-049-050-171800-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this afternoon. Highs around 90. West winds 5 to
10 mph. Chance of rain 20 percent.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the lower 70s. Southwest
winds 5 to 10 mph. Chance of rain 20 percent.
.SATURDAY...Sunny. Highs in the lower 90s. West winds 5 to 10 mph
with gusts up to 20 mph. Heat index values up to 100.
.SATURDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. A slight chance of thunderstorms in the evening. A
slight chance of showers. Humid with lows in the lower 70s. West
winds 5 to 10 mph. Chance of rain 20 percent.
.SUNDAY...Sunny. A slight chance of showers and thunderstorms in
the afternoon. Humid with highs in the lower 90s. Northwest winds
around 5 mph, becoming south in the afternoon. Chance of rain
20 percent. Heat index values up to 101.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...Mostly clear. Lows in the
mid 70s. Highs in the mid 90s. Heat index values up to 105.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the lower
90s. Lows in the upper 60s.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the mid
80s. Lows in the mid 60s.
.THURSDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the mid 80s. Chance of rain 20 percent.

$$

MOZ041-047-048-171800-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny. Patchy fog this morning. A slight chance
of showers and thunderstorms this afternoon. Highs in the lower
90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. Heat
index values up to 100.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the mid 70s. Southwest
winds 5 to 10 mph. Chance of rain 20 percent.
.SATURDAY...Sunny with highs in the lower 90s. West winds 5 to
10 mph. Heat index values up to 102.
.SATURDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the mid 70s.
West winds 5 to 10 mph. Chance of rain 20 percent. Heat index
values up to 101 early in the evening.
.SUNDAY...Sunny with highs in the lower 90s. West winds around
5 mph, becoming southwest in the afternoon. Heat index values up
to 103.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...Mostly clear. Hot. Lows in
the mid 70s. Highs in the mid 90s. Heat index values up to 105.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Hot. Highs in the mid
90s. Lows around 70. Heat index values up to 100.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy. Highs in the upper
80s. Lows in the mid 60s.

$$

ILZ095>097-MOZ018-019-026-027-034>036-171800-
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
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny with a slight chance of thunderstorms. A
slight chance of showers this morning, then a chance of showers
this afternoon. Highs around 90. West winds 5 to 10 mph. Chance
of rain 40 percent.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the mid 70s. Southwest
winds 5 to 10 mph. Chance of rain 20 percent.
.SATURDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Humid with highs in the lower 90s. West winds
5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.
Heat index values up to 102.
.SATURDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms in the evening, then a slight chance of showers
after midnight. Humid with lows in the lower 70s. West winds 5 to
10 mph, becoming north after midnight. Chance of rain 40 percent.
Heat index values up to 102 early in the evening.
.SUNDAY...Sunny. Highs around 90. East winds around 5 mph.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows in the lower 70s.
Highs in the mid 90s. Heat index values up to 105.
.MONDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers and thunderstorms after midnight.
Lows in the mid 70s. Chance of rain 20 percent. Heat index values
up to 105 early in the evening.
.TUESDAY...Mostly sunny. Highs in the lower 90s.
.TUESDAY 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.
.WEDNESDAY...Mostly sunny. Highs in the lower 80s.
.WEDNESDAY NIGHT...Mostly clear. A slight chance of showers after
midnight. Lows in the lower 60s. Chance of rain 20 percent.
.THURSDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the mid 80s. Chance of rain 20 percent.

$$

ILZ069-070-074-171800-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
533 AM CDT Fri Jul 17 2026

.TODAY...Patchy fog this morning. Mostly sunny with a chance of
showers and thunderstorms. Highs around 90. West winds around
5 mph. Chance of rain 50 percent. Heat index values up to 100.
.TONIGHT...Partly cloudy with a chance of showers and
thunderstorms in the evening, then mostly clear after midnight.
Humid with lows in the mid 70s. Southwest winds around 5 mph.
Chance of rain 30 percent. Heat index values up to 100 early in
the evening.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Humid with highs in the lower
90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat
index values up to 103.
.SATURDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms, mainly in the evening. Humid with lows in the
lower 70s. West winds 5 to 10 mph in the evening, becoming light
and variable. Chance of rain 40 percent. Heat index values up to
103 early in the evening.
.SUNDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Humid with highs in the upper
80s. Northeast winds around 5 mph. Chance of rain 20 percent.
Heat index values up to 100.
.SUNDAY NIGHT...Mostly clear. Lows around 70.
.MONDAY THROUGH TUESDAY...Partly cloudy. Highs in the lower 90s.
Lows in the mid 70s. Heat index values up to 105.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the upper
60s. Highs in the lower 80s. Heat index values up to 100.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the lower 60s.
.THURSDAY...Mostly sunny. Highs in the mid 80s.

$$

MOZ074-084-085-099-171800-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this afternoon. Highs around 90. West winds around
5 mph. Chance of rain 20 percent.
.TONIGHT...Mostly clear. Lows in the lower 70s. West winds around
5 mph.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs in the lower 90s. West
winds 5 to 10 mph. Chance of rain 20 percent. Heat index values
up to 100.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly clear after
midnight. Lows in the lower 70s. West winds around 5 mph. Chance
of rain 20 percent.
.SUNDAY...Sunny. A chance of showers and thunderstorms in the
afternoon. Humid with highs in the lower 90s. Northwest winds
around 5 mph. Chance of rain 50 percent. Heat index values up to
102.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Lows in the lower
70s. Highs in the mid 90s. Heat index values up to 105.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the upper
60s. Highs in the mid 80s. Heat index values up to 100.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 60s.
.THURSDAY...Mostly sunny. Highs in the mid 80s.

$$

MOZ051-052-060-171800-
Montgomery MO-Lincoln MO-Warren MO-
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs around 90. West winds around 5 mph. Chance
of rain 20 percent.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the lower 70s. Southwest
winds around 5 mph. Chance of rain 20 percent.
.SATURDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Humid with highs in the lower 90s. West winds
5 to 10 mph. Chance of rain 20 percent. Heat index values up to
102.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing. A
slight chance of showers. A chance of thunderstorms, mainly in
the evening. Humid with lows in the lower 70s. West winds 5 to
10 mph. Chance of rain 30 percent. Heat index values up to
100 early in the evening.
.SUNDAY...Sunny. A slight chance of showers and thunderstorms in
the afternoon. Humid with highs in the lower 90s. Light and
variable winds, becoming northeast around 5 mph in the afternoon.
Chance of rain 20 percent. Heat index values up to 102.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. Heat index
values up to 100 early in the evening.
.MONDAY...Mostly sunny. Highs in the mid 90s. Heat index values
up to 105.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 105 early in the evening.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the lower
90s. Lows in the upper 60s. Heat index values up to 100.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the lower 60s.
.THURSDAY...Mostly sunny. A slight chance of showers in the
morning. Highs in the mid 80s. Chance of rain 20 percent.

$$

ILZ058-059-098-099-171800-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny with a chance of showers and thunderstorms.
Highs around 90. West winds 5 to 10 mph. Chance of rain
40 percent.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the lower 70s.
Southwest winds around 5 mph. Chance of rain 20 percent.
.SATURDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Humid with highs in the lower 90s. West winds
5 to 10 mph. Chance of rain 20 percent. Heat index values up to
102.
.SATURDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms, mainly in the evening. Humid with lows in the
lower 70s. Northwest winds 5 to 10 mph. Chance of rain
40 percent. Heat index values up to 100 early in the evening.
.SUNDAY...Sunny. A slight chance of showers and thunderstorms in
the afternoon. Highs in the upper 80s. Northeast winds around
5 mph. Chance of rain 20 percent.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 60s.
.MONDAY...Mostly sunny. Highs in the lower 90s. Heat index values
up to 105.
.MONDAY NIGHT...Partly cloudy in the evening, then mostly clear
with a slight chance of showers and thunderstorms after midnight.
Lows in the mid 70s. Chance of rain 20 percent. Heat index values
up to 105 early in the evening.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the lower
90s. Lows in the upper 60s.
.WEDNESDAY...Mostly sunny. Highs in the lower 80s.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s.
.THURSDAY...Mostly sunny. Highs in the mid 80s.

$$

ILZ060-064-065-171800-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
533 AM CDT Fri Jul 17 2026

.TODAY...Patchy fog this morning. Mostly sunny with a chance of
showers and thunderstorms. Highs in the upper 80s. West winds
around 5 mph. Chance of rain 50 percent.
.TONIGHT...Partly cloudy with a chance of showers and
thunderstorms in the evening, then mostly clear after midnight.
Humid with lows in the lower 70s. Southwest winds around 5 mph.
Chance of rain 30 percent.
.SATURDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Humid with highs in the lower 90s. West winds
5 to 10 mph. Chance of rain 20 percent. Heat index values up to
102.
.SATURDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms, mainly in the evening. Humid with lows in the
lower 70s. West winds 5 to 10 mph, becoming north after midnight.
Chance of rain 40 percent. Heat index values up to 100 early in
the evening.
.SUNDAY...Sunny. Highs in the upper 80s. Northeast winds around
5 mph.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 60s.
.MONDAY...Mostly sunny. Highs in the lower 90s. Heat index values
up to 105.
.MONDAY 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. Heat index
values up to 100 early in the evening.
.TUESDAY...Mostly sunny. Highs around 90. Heat index values up to
100.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows in the upper
60s. Highs in the lower 80s.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows in the lower
60s. Highs in the lower 80s.

$$

ILZ079-MOZ075-171800-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny with a slight chance of thunderstorms. A
slight chance of showers this morning, then a chance of showers
this afternoon. Highs around 90. West winds around 5 mph. Chance
of rain 30 percent. Heat index values up to 101.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Humid with lows in the lower 70s.
Southwest winds around 5 mph. Chance of rain 20 percent. Heat
index values up to 100 early in the evening.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Humid with highs in the lower
90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat
index values up to 102.
.SATURDAY NIGHT...Partly cloudy. A chance of thunderstorms with a
slight chance of showers in the evening. Humid with lows in the
lower 70s. West winds 5 to 10 mph. Chance of rain 30 percent.
Heat index values up to 101 early in the evening.
.SUNDAY...Mostly sunny. A chance of showers and thunderstorms in
the afternoon. Humid with highs in the lower 90s. North winds
around 5 mph. Chance of rain 50 percent. Heat index values up to
104.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. Heat index
values up to 100 early in the evening.
.MONDAY...Mostly sunny. Highs in the mid 90s. Heat index values
up to 105.
.MONDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 70s. Heat index values up to
105 early in the evening.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the mid 90s.
Lows in the upper 60s. Heat index values up to 105.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 60s.
.THURSDAY...Mostly sunny. Highs in the mid 80s.

$$

MOZ059-062-072-073-171800-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny. A slight chance of showers and
thunderstorms this afternoon. Highs around 90. West winds around
5 mph. Chance of rain 20 percent.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the lower 70s. Southwest
winds around 5 mph. Chance of rain 20 percent.
.SATURDAY...Sunny. A slight chance of showers and thunderstorms
in the afternoon. Highs in the lower 90s. West winds 5 to 10 mph.
Chance of rain 20 percent. Heat index values up to 101.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms in the evening, then mostly clear after
midnight. Lows in the lower 70s. West winds around 5 mph. Chance
of rain 20 percent.
.SUNDAY...Sunny. A chance of showers with a slight chance of
thunderstorms in the afternoon. Humid with highs in the lower
90s. Northwest winds around 5 mph. Chance of rain 40 percent.
Heat index values up to 103.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...Mostly clear. Lows in the
lower 70s. Highs in the mid 90s. Heat index values up to 105.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs in the mid 90s.
Lows in the upper 60s. Heat index values up to 100.
.WEDNESDAY...Mostly sunny. Highs in the mid 80s.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 60s.
.THURSDAY...Mostly sunny. Highs in the mid 80s.

$$

ILZ102-MOZ065-171800-
Monroe IL-Jefferson MO-
533 AM CDT Fri Jul 17 2026

.TODAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 90s. West winds around 5 mph.
Chance of rain 20 percent. Heat index values up to 101.
.TONIGHT...Mostly clear. A slight chance of showers and
thunderstorms in the evening. Lows in the mid 70s. Southwest
winds around 5 mph. Chance of rain 20 percent. Heat index values
up to 100 early in the evening.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Humid with highs in the lower
90s. West winds 5 to 10 mph. Chance of rain 20 percent. Heat
index values up to 103.
.SATURDAY NIGHT...Partly cloudy. A chance of showers and
thunderstorms in the evening. Humid with lows in the lower 70s.
West winds around 5 mph. Chance of rain 30 percent. Heat index
values up to 101 early in the evening.
.SUNDAY...Mostly sunny. A chance of showers and thunderstorms in
the afternoon. Humid with highs in the lower 90s. North winds
around 5 mph. Chance of rain 40 percent. Heat index values up to
104.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 70s. Heat index
values up to 100 early in the evening.
.MONDAY...Mostly sunny. Highs in the mid 90s. Heat index values
up to 110.
.MONDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 105 early in the evening.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Hot. Highs in the mid
90s. Lows in the upper 60s. Heat index values up to 105.
.WEDNESDAY...Mostly sunny. Not as warm with highs in the mid 80s.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 60s.
.THURSDAY...Mostly sunny. Highs in the mid 80s.

$$