959
FPUS53 KLSX 171023
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
523 AM CDT Mon Aug 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
523 AM CDT Mon Aug 17 2026

.TODAY...Mostly sunny. Highs in the mid 80s. North winds 5 to
10 mph.
.TONIGHT...Partly cloudy. Patchy fog after midnight. Lows in the
mid 60s. North winds 5 to 10 mph.
.TUESDAY...Patchy fog in the morning. Sunny. Highs in the upper
80s. South winds around 5 mph.
.TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy
with showers and thunderstorms likely after midnight. Lows in the
lower 70s. South winds around 5 mph. Chance of rain 70 percent.
.WEDNESDAY...Mostly cloudy with a chance of showers and
thunderstorms in the morning, then partly sunny with a slight
chance of showers and thunderstorms in the afternoon. Humid with
highs in the mid 80s. Southwest winds around 5 mph, becoming
northeast in the afternoon. Chance of rain 50 percent.
.WEDNESDAY NIGHT...Mostly cloudy with a chance of thunderstorms.
A chance of showers in the evening, then showers likely after
midnight. Lows in the upper 60s. Chance of rain 70 percent.
.THURSDAY...Mostly cloudy in the morning, then becoming partly
sunny. A chance of showers and thunderstorms. Highs in the lower
80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs in the lower 80s.
Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 60s.
.SUNDAY...Mostly sunny. Highs in the lower 80s.

$$

MOZ042-049-050-171800-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
523 AM CDT Mon Aug 17 2026

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

$$

MOZ041-047-048-171800-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
523 AM CDT Mon Aug 17 2026

.TODAY...Sunny. Highs in the lower 80s. North winds 5 to 10 mph.
.TONIGHT...Mostly clear. Lows in the mid 60s. Northeast winds
around 5 mph, becoming south after midnight.
.TUESDAY...Sunny. Highs around 90. South winds 5 to 10 mph.
.TUESDAY NIGHT...Mostly clear with a slight chance of showers and
thunderstorms in the evening, then mostly cloudy with showers and
thunderstorms likely after midnight. Lows in the lower 70s.
Southeast winds around 5 mph, becoming northeast after midnight.
Chance of rain 70 percent.
.WEDNESDAY...Mostly cloudy with a chance of showers and
thunderstorms in the morning, then partly sunny in the afternoon.
Humid with highs in the mid 80s. East winds around 5 mph. Chance
of rain 40 percent.
.WEDNESDAY NIGHT...Mostly cloudy with a chance of thunderstorms.
A chance of showers in the evening, then showers likely after
midnight. Lows in the upper 60s. Chance of rain 60 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...Partly cloudy in the evening, then clearing.
Lows in the mid 60s.
.FRIDAY...Sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms after midnight. Lows in the mid 60s. Chance of rain
20 percent.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 60s.
.SUNDAY...Mostly sunny. Highs in the mid 80s.

$$

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
523 AM CDT Mon Aug 17 2026

.TODAY...Sunny. Highs in the lower 80s. Northwest winds 5 to
10 mph.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
clear. Lows in the lower 60s. North winds around 5 mph, becoming
south after midnight.
.TUESDAY...Sunny. Highs in the mid 80s. Southwest winds 5 to
10 mph.
.TUESDAY NIGHT...Partly cloudy with a chance of showers with a
slight chance of thunderstorms in the evening, then mostly cloudy
with showers with thunderstorms likely after midnight. Lows in
the upper 60s. Southeast winds around 5 mph, becoming north after
midnight. Chance of rain 80 percent.
.WEDNESDAY...Mostly cloudy with a chance of showers and
thunderstorms in the morning, then partly sunny in the afternoon.
Highs around 80. North winds around 5 mph. Chance of rain
40 percent.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of
showers and thunderstorms. Lows in the mid 60s. Highs around 80.
Chance of rain 50 percent.
.THURSDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the lower 60s.
.FRIDAY...Sunny. Highs in the lower 80s.
.FRIDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms after midnight. Lows in the mid 60s. Chance of rain
20 percent.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Mostly clear. Lows in the lower 60s.
.SUNDAY...Mostly sunny. Highs around 80.

$$

ILZ069-070-074-171800-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
523 AM CDT Mon Aug 17 2026

.TODAY...Patchy fog this morning. Mostly sunny. Highs in the mid
80s. Northwest winds 5 to 10 mph.
.TONIGHT...Partly cloudy. Lows in the mid 60s. North winds around
5 mph.
.TUESDAY...Patchy fog in the morning. Sunny. Highs in the mid
80s. Southwest winds around 5 mph.
.TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy
with a chance of showers and thunderstorms after midnight. Lows
in the upper 60s. South winds around 5 mph. Chance of rain
50 percent.
.WEDNESDAY...Becoming partly sunny in the afternoon. A chance of
thunderstorms. Showers likely, mainly in the morning. Humid with
highs in the mid 80s. Southwest winds around 5 mph, becoming
northwest around 5 mph in the afternoon. Chance of rain
70 percent.
.WEDNESDAY NIGHT...Showers and thunderstorms likely in the
evening, then showers likely with a chance of thunderstorms after
midnight. Lows in the upper 60s. Chance of rain 70 percent.
.THURSDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the lower 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Mostly cloudy in the evening, then clearing.
Lows in the mid 60s.
.FRIDAY THROUGH SUNDAY...Mostly clear. Highs in the lower 80s.
Lows in the mid 60s.

$$

MOZ074-084-085-099-171800-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
523 AM CDT Mon Aug 17 2026

.TODAY...Mostly sunny. Not as warm with highs in the mid 80s.
North winds 5 to 10 mph.
.TONIGHT...Partly cloudy. Patchy fog after midnight. Lows in the
lower 60s. North winds around 5 mph.
.TUESDAY...Patchy fog in the morning. Sunny. Highs around 90.
South winds around 5 mph.
.TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy
with a chance of showers and thunderstorms after midnight. Lows
in the upper 60s. South winds around 5 mph. Chance of rain
50 percent.
.WEDNESDAY...Mostly sunny with a chance of thunderstorms. Showers
likely, mainly in the morning. Highs around 90. East winds around
5 mph, becoming south in the afternoon. Chance of rain
60 percent. Heat index values up to 101 in the afternoon.
.WEDNESDAY NIGHT AND THURSDAY...Showers likely with a chance of
thunderstorms. Lows in the upper 60s. Highs in the lower 80s.
Chance of rain 70 percent.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms in the evening, then partly cloudy with a slight
chance of showers and thunderstorms after midnight. Lows in the
mid 60s. Chance of rain 50 percent.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows in the mid 60s.
Highs in the mid 80s.

$$

MOZ051-052-060-171800-
Montgomery MO-Lincoln MO-Warren MO-
523 AM CDT Mon Aug 17 2026

.TODAY...Mostly sunny. Highs in the lower 80s. North winds 5 to
10 mph.
.TONIGHT...Partly cloudy in the evening, then clearing. Lows in
the lower 60s. North winds around 5 mph, becoming southwest after
midnight.
.TUESDAY...Patchy fog in the morning. Sunny. Highs in the upper
80s. Southwest winds around 5 mph.
.TUESDAY NIGHT...Mostly clear in the evening, then mostly cloudy
with showers and thunderstorms likely after midnight. Lows in the
upper 60s. Southeast winds around 5 mph, becoming east after
midnight. Chance of rain 70 percent.
.WEDNESDAY...Mostly cloudy with a chance of showers and
thunderstorms in the morning, then partly sunny in the afternoon.
Humid with highs in the lower 80s. East winds around 5 mph,
becoming northeast in the afternoon. Chance of rain 40 percent.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of
showers and thunderstorms. Lows in the mid 60s. Highs in the
lower 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.FRIDAY...Sunny. Highs in the lower 80s.
.FRIDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms after midnight. Lows in the lower 60s. Chance of
rain 20 percent.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the lower 60s.
Highs in the lower 80s.

$$

ILZ058-059-098-099-171800-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
523 AM CDT Mon Aug 17 2026

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

$$

ILZ060-064-065-171800-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
523 AM CDT Mon Aug 17 2026

.TODAY...Mostly sunny. Highs in the lower 80s. North winds 5 to
10 mph.
.TONIGHT...Partly cloudy in the evening, then becoming mostly
clear. Lows in the lower 60s. North winds around 5 mph.
.TUESDAY...Patchy fog in the morning. Sunny. Highs in the mid
80s. Southwest winds around 5 mph.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy
with showers and thunderstorms likely after midnight. Lows in the
upper 60s. South winds around 5 mph. Chance of rain 70 percent.
.WEDNESDAY...Becoming partly sunny in the afternoon. A chance of
thunderstorms. Showers likely, mainly in the morning. Highs in
the lower 80s. West winds around 5 mph, becoming northwest around
5 mph in the afternoon. Chance of rain 70 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 with a chance of showers and
thunderstorms. Highs in the lower 80s. Chance of rain 50 percent.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.FRIDAY THROUGH SUNDAY...Mostly clear. Highs in the lower 80s.
Lows in the lower 60s.

$$

ILZ079-MOZ075-171800-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
523 AM CDT Mon Aug 17 2026

.TODAY...Mostly sunny. Cooler with highs in the mid 80s.
Northwest winds 5 to 10 mph.
.TONIGHT...Partly cloudy. Patchy fog after midnight. Lows in the
mid 60s. North winds 5 to 10 mph.
.TUESDAY...Patchy fog in the morning. Sunny. Highs in the upper
80s. South winds around 5 mph.
.TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy
with showers and thunderstorms likely after midnight. Lows in the
upper 60s. South winds around 5 mph. Chance of rain 60 percent.
.WEDNESDAY...A chance of thunderstorms. Showers likely, mainly in
the morning. Humid with highs in the upper 80s. South winds
around 5 mph. Chance of rain 70 percent. Heat index values up to
101 in the afternoon.
.WEDNESDAY NIGHT AND THURSDAY...Showers likely with a chance of
thunderstorms. Lows in the upper 60s. Highs in the lower 80s.
Chance of rain 70 percent.
.THURSDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms in the evening, then partly cloudy after
midnight. Lows in the mid 60s. Chance of rain 20 percent.
.FRIDAY...Mostly sunny. Highs in the lower 80s.
.FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows in the mid 60s.
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
523 AM CDT Mon Aug 17 2026

.TODAY...Mostly sunny. Cooler with highs in the lower 80s. North
winds 5 to 10 mph.
.TONIGHT...Partly cloudy. Patchy fog after midnight. Lows in the
lower 60s. North winds around 5 mph, becoming south after
midnight.
.TUESDAY...Patchy fog in the morning. Sunny. Highs around 90.
South winds around 5 mph.
.TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy
with showers and thunderstorms likely after midnight. Lows around
70. Southeast winds around 5 mph. Chance of rain 70 percent.
.WEDNESDAY...Partly sunny with a chance of showers and
thunderstorms. Humid with highs in the upper 80s. East winds
around 5 mph. Chance of rain 50 percent.
.WEDNESDAY NIGHT...Mostly cloudy with a chance of thunderstorms.
A chance of showers in the evening, then showers likely after
midnight. Lows in the upper 60s. Chance of rain 70 percent.
.THURSDAY...Mostly cloudy in the morning, then becoming partly
sunny. A chance of showers and thunderstorms. Highs in the lower
80s. Chance of rain 50 percent.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 60s.
Highs in the lower 80s.
.FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows in the lower
60s. Highs in the mid 80s.

$$

ILZ102-MOZ065-171800-
Monroe IL-Jefferson MO-
523 AM CDT Mon Aug 17 2026

.TODAY...Partly sunny this morning, then clearing. Cooler with
highs in the mid 80s. Northwest winds 5 to 10 mph.
.TONIGHT...Mostly cloudy. Patchy fog after midnight. Lows in the
lower 60s. North winds 5 to 10 mph, becoming west after midnight.
.TUESDAY...Patchy fog in the morning. Sunny. Highs in the upper
80s. South winds around 5 mph.
.TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy
with showers and thunderstorms likely after midnight. Lows around
70. Southeast winds around 5 mph. Chance of rain 70 percent.
.WEDNESDAY...Partly sunny with a chance of showers and
thunderstorms. Humid with highs in the upper 80s. South winds
around 5 mph, becoming east in the afternoon. Chance of rain
50 percent. Heat index values up to 100 in the afternoon.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of thunderstorms. A chance of showers in
the evening, then showers likely after midnight. Lows in the
upper 60s. Chance of rain 70 percent.
.THURSDAY...Mostly cloudy in the morning, then becoming partly
sunny. A chance of showers and thunderstorms. Highs in the lower
80s. Chance of rain 50 percent.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 60s.
Highs in the lower 80s.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows in the
mid 60s. Highs in the mid 80s.
.SUNDAY...Mostly sunny. Highs in the lower 80s.

$$