Zone Forecast Product
Issued by NWS St. Louis, MO

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FPUS53 KLSX 220223
ZFPLSX

Zone Forecasts
National Weather Service Saint Louis MO
923 PM CDT Tue Jul 21 2026

ILZ100-101-MOZ061-063-064-221000-
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
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the upper 60s. North
winds 10 to 15 mph.
.WEDNESDAY...Mostly sunny. Highs in the lower 80s. North winds
5 to 10 mph.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the lower 60s. Northeast winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s. Northeast winds around
5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. East
winds around 5 mph.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. A chance of showers and thunderstorms. Highs in the upper
70s. Chance of rain 50 percent.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows in the mid 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the upper 80s. Chance of
rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows around 70.
Highs in the mid 90s. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 70s. Heat index
values up to 110 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the upper 90s. Heat
index values up to 110.
.MONDAY NIGHT...Mostly clear with a slight chance of showers and
thunderstorms. Lows in the mid 70s. Chance of rain 20 percent.
Heat index values up to 110 early in the evening.
.TUESDAY...Sunny. Highs in the lower 90s.

$$

MOZ042-049-050-221000-
Audrain MO-Osage MO-Callaway MO-
Including the cities of Mexico and Fulton
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the mid 60s. North
winds 10 to 15 mph, diminishing to around 5 mph after midnight.
.WEDNESDAY...Sunny. Highs in the lower 80s. North winds 5 to
10 mph.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the lower 60s. Northeast winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs around 80. East winds around
5 mph.
.THURSDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms after midnight. Lows in the lower 60s. East winds
around 5 mph. Chance of rain 40 percent.
.FRIDAY...Showers and thunderstorms likely, mainly in the
morning. Highs in the mid 70s. Chance of rain 70 percent.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows in the mid 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. Warmer with highs in the upper 80s.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows around 70. Highs
in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Hot. Lows in the
lower 70s. Highs in the mid 90s. Heat index values up to 105.

$$

MOZ041-047-048-221000-
Boone MO-Moniteau MO-Cole MO-
Including the cities of Columbia and Jefferson City
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the mid 60s. North
winds 5 to 10 mph.
.WEDNESDAY...Sunny. Highs in the lower 80s. North winds 5 to
10 mph.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. East winds
around 5 mph.
.THURSDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms after midnight. Lows in the mid 60s. East winds
around 5 mph. Chance of rain 40 percent.
.FRIDAY...Showers and thunderstorms likely, mainly in the
morning. Highs in the upper 70s. Chance of rain 70 percent.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows in the upper 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. Warmer with highs around 90.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the lower
70s. Highs in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Hot. Lows in the
mid 70s. Highs in the mid 90s. Heat index values up to 110.

$$

ILZ095>097-MOZ018-019-026-027-034>036-221000-
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
923 PM CDT Tue Jul 21 2026

.TONIGHT...Clear, cooler with lows in the lower 60s. North winds
10 to 15 mph with gusts up to 25 mph, diminishing to around 5 mph
after midnight.
.WEDNESDAY...Sunny in the morning, then becoming partly sunny.
Highs around 80. North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the upper 50s. Northeast winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs around 80. East winds around
5 mph.
.THURSDAY NIGHT...Partly cloudy in the evening, then mostly
cloudy with a chance of showers and thunderstorms after midnight.
Lows in the lower 60s. East winds around 5 mph. Chance of rain
40 percent.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. A chance of showers and thunderstorms. Highs in the upper
70s. Chance of rain 50 percent.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows in the lower 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. Warmer with highs in the upper 80s.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows around 70. Highs
in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the upper 90s. Heat index values up to 105.
.MONDAY NIGHT...Mostly clear. A slight chance of showers and
thunderstorms after midnight. Lows in the lower 70s. Chance of
rain 20 percent. Heat index values up to 105 early in the
evening.
.TUESDAY...Sunny. Highs in the lower 90s.

$$

ILZ069-070-074-221000-
Clinton IL-Marion IL-Washington IL-
Including the cities of Centralia and Salem
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the upper 60s. North
winds 10 to 15 mph.
.WEDNESDAY...Mostly sunny. Cooler with highs around 80. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly cloudy in the evening, then clearing.
Lows around 60. Northeast winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the upper 70s. Northeast winds around
5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. Northeast
winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A slight chance of
showers and thunderstorms. Highs in the upper 70s. Lows in the
lower 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the mid 80s. Chance of
rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs in the lower 90s. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 105 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the upper 90s. Heat
index values up to 110.
.MONDAY NIGHT...Mostly clear with a slight chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.
Heat index values up to 110 early in the evening.
.TUESDAY...Sunny. Highs in the lower 90s.

$$

MOZ074-084-085-099-221000-
Saint Francois MO-Iron MO-Madison MO-Reynolds MO-
Including the city of Farmington
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the mid 60s. North
winds 5 to 10 mph.
.WEDNESDAY...Mostly sunny. Cooler with highs in the lower 80s.
North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
Northeast winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs around 80. Northeast winds around
5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 60s. East
winds around 5 mph in the evening, becoming light and variable.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms. Highs in the upper 70s. Lows in the mid 60s.
Chance of rain 50 percent.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the upper 80s. Chance of
rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 105 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the upper 90s. Heat
index values up to 110 in the afternoon.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the lower 70s.
Highs in the mid 90s. Heat index values up to 105.

$$

MOZ051-052-060-221000-
Montgomery MO-Lincoln MO-Warren MO-
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Much cooler with lows in the mid 60s.
North winds 10 to 15 mph, diminishing to around 5 mph after
midnight.
.WEDNESDAY...Mostly sunny. Highs in the lower 80s. North winds
5 to 10 mph.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows around 60. Northeast winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. East winds
around 5 mph.
.THURSDAY NIGHT...Mostly cloudy in the evening, then partly
cloudy with a slight chance of showers and thunderstorms after
midnight. Lows in the lower 60s. East winds around 5 mph. Chance
of rain 20 percent.
.FRIDAY...Thunderstorms likely. Showers likely. Highs in the
upper 70s. Chance of rain 70 percent.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows in the lower 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. Warmer with highs in the upper 80s.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...Mostly clear. Hot. Lows in
the lower 70s. Highs in the upper 90s. Heat index values up to
110.
.TUESDAY...Sunny. Highs in the lower 90s.

$$

ILZ058-059-098-099-221000-
Greene IL-Macoupin IL-Calhoun IL-Jersey IL-
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the mid 60s. North
winds 10 to 15 mph.
.WEDNESDAY...Mostly sunny. Highs in the upper 70s. North winds
5 to 10 mph.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the upper 50s. Northeast winds 5 to 10 mph.
.THURSDAY...Sunny. Highs around 80. East winds around 5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. East
winds around 5 mph.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. A chance of showers and thunderstorms. Highs in the upper
70s. Chance of rain 50 percent.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows in the lower 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. Highs in the upper 80s.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Hot. Lows in the mid
70s. Highs in the upper 90s. Heat index values up to 105.
.MONDAY NIGHT...Mostly clear with a slight chance of showers and
thunderstorms. Lows around 70. Chance of rain 20 percent. Heat
index values up to 105 early in the evening.
.TUESDAY...Sunny. Highs in the lower 90s.

$$

ILZ060-064-065-221000-
Montgomery IL-Bond IL-Fayette IL-
Including the cities of Litchfield and Vandalia
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the mid 60s. North
winds 10 to 15 mph.
.WEDNESDAY...Mostly sunny. Cooler with highs in the upper 70s.
North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows in the upper 50s. Northeast winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the upper 70s. Northeast winds around
5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northeast
winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. A slight chance of
showers and thunderstorms. Highs in the upper 70s. 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 upper 60s.
Highs in the lower 90s. Heat index values up to 105.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 105 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the mid 90s. Heat index
values up to 110.
.MONDAY NIGHT...Mostly clear with a slight chance of showers and
thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.
Heat index values up to 105 early in the evening.
.TUESDAY...Sunny. Highs around 90.

$$

ILZ079-MOZ075-221000-
Randolph IL-Sainte Genevieve MO-
Including the cities of Chester and Sparta
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the upper 60s. North
winds 5 to 10 mph. Heat index values up to 101 early this
evening.
.WEDNESDAY...Mostly sunny. Cooler with highs in the lower 80s.
North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Lows in the lower 60s. Northeast winds 5 to
10 mph.
.THURSDAY...Mostly sunny. Highs around 80. Northeast winds around
5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows around 60. Northeast winds
around 5 mph in the evening, becoming light and variable.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. A chance of showers and thunderstorms. Highs in the upper
70s. Chance of rain 50 percent.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows in the lower 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Highs in the upper 80s. Chance of
rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 60s.
Highs in the mid 90s. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 110 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the upper 90s. Heat
index values up to 110 in the afternoon.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the lower 70s.
Highs in the lower 90s. Heat index values up to 110.

$$

MOZ059-062-072-073-221000-
Gasconade MO-Franklin MO-Crawford MO-Washington MO-
Including the cities of Washington, Union, and Sullivan
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the mid 60s. North
winds 5 to 10 mph.
.WEDNESDAY...Mostly sunny. Highs in the lower 80s. North winds
5 to 10 mph.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
Northeast winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs around 80. East winds around
5 mph.
.THURSDAY NIGHT...Mostly cloudy in the evening, then partly
cloudy with a slight chance of showers and thunderstorms after
midnight. Lows in the lower 60s. East winds around 5 mph in the
evening, becoming light and variable. Chance of rain 20 percent.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. Showers and thunderstorms likely. Highs in the upper 70s.
Chance of rain 60 percent.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Lows in the mid 60s. Chance of rain 20 percent.
.SATURDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the morning. Warmer with highs in the upper 80s.
Chance of rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the upper
60s. Highs in the mid 90s. Heat index values up to 105.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 105 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the upper 90s. Heat
index values up to 110.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows in the lower 70s.
Highs in the mid 90s. Heat index values up to 105.

$$

ILZ102-MOZ065-221000-
Monroe IL-Jefferson MO-
923 PM CDT Tue Jul 21 2026

.TONIGHT...Mostly clear. Cooler with lows in the mid 60s. North
winds 5 to 10 mph with gusts up to 20 mph.
.WEDNESDAY...Mostly sunny. Highs in the lower 80s. North winds
5 to 10 mph.
.WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Lows in the lower 60s. Northeast winds 5 to
10 mph.
.THURSDAY...Mostly sunny. Highs around 80. Northeast winds around
5 mph.
.THURSDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Lows in the lower 60s. East winds around 5 mph in
the evening, becoming light and variable.
.FRIDAY...Partly sunny in the morning, then becoming mostly
cloudy. A chance of showers and thunderstorms. Highs in the upper
70s. Chance of rain 50 percent.
.FRIDAY NIGHT AND SATURDAY...Mostly cloudy. A slight chance of
showers and thunderstorms. Lows in the lower 60s. Highs in the
upper 80s. Chance of rain 20 percent.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the upper
60s. Highs in the mid 90s. Heat index values up to 110.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index
values up to 110 early in the evening.
.MONDAY...Mostly sunny. Hot with highs in the upper 90s. Heat
index values up to 110.
.MONDAY NIGHT...Mostly clear. Lows in the lower 70s. Heat index
values up to 110 early in the evening.
.TUESDAY...Mostly sunny. Highs in the lower 90s. Heat index
values up to 100.

$$