Red Flag Warning
The National Weather Service in St Louis MO has issued a Red Flag
Warning.
* AFFECTED AREA...Portions of central, east central, northeast, south
central, and southeast Missouri.
* TIMING...From noon to 8 PM CST Thursday.
* WINDS...Southwest winds 10 to 20 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...Relative Humidity between 22 to 30 percent.
* IMPACTS...Any fires that develop will spread rapidly. Outdoor
burning is not recommended.
From: Feb 18, 2026 19:00
Until: Feb 19, 2026 03:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 12 below expected.
* WHERE...Portions of south central and southwest Illinois.
* WHEN...From 6 PM this evening to 6 AM CST Tuesday.
* IMPACTS...The cold wind chills as low as 10 below zero could result
in hypothermia or frostbite if precautions are not taken. Frostbite
and hypothermia will occur if unprotected skin is exposed to these
temperatures.
From: Jan 26, 2026 20:33
Until: Jan 27, 2026 11:45
Extreme Cold Warning
* WHAT...Dangerously cold wind chills as low as 23 below expected.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...From midnight tonight to noon CST Monday.
* IMPACTS...The dangerously cold wind chills as low as 25 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 26, 2026 06:00
Until: Jan 26, 2026 18:00
Winter Storm Warning
* WHAT...Heavy snow. Additional snow accumulations up to two inches.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, and northeast Missouri.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Plan on slippery road conditions.
From: Jan 25, 2026 15:29
Until: Jan 26, 2026 00:00
Winter Storm Warning
* WHAT...Heavy snow. Additional snow accumulations between 1 and 4
inches.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Plan on slippery road conditions.
From: Jan 25, 2026 12:05
Until: Jan 26, 2026 00:00
Winter Storm Warning
* WHAT...Heavy snow. Additional snow accumulations between 1 and 3
inches.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Plan on slippery road conditions.
From: Jan 25, 2026 15:29
Until: Jan 26, 2026 00:00
Winter Storm Warning
* WHAT...Heavy snow. Additional snow accumulations between 1 and 2
inches.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, and northeast Missouri.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Plan on slippery road conditions.
From: Jan 25, 2026 12:05
Until: Jan 26, 2026 00:00
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 5 and
10 inches with locally higher amounts possible.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...From midnight Friday Night to 6 PM CST Sunday.
* IMPACTS...Travel could be very difficult to impossible.
From: Jan 24, 2026 06:00
Until: Jan 26, 2026 00:00
Extreme Cold Warning
* WHAT...Dangerously cold wind chills of 15 to 25 below expected.
Actual temperatures may reach 5 to 10 degrees below zero as well.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...From midnight tonight to noon CST Monday.
* IMPACTS...The dangerously cold wind chills as low as 25 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 25, 2026 07:55
Until: Jan 25, 2026 23:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 below expected.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...From midnight Friday Night to noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 15 below zero
could result in hypothermia or frostbite if precautions are not
taken.
From: Jan 24, 2026 06:00
Until: Jan 24, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills between 15 and 25 below expected.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, and northeast Missouri.
* WHEN...Until noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 25 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 23, 2026 08:30
Until: Jan 23, 2026 23:30
Cold Weather Advisory
* WHAT...Very cold wind chills between 10 and 15 below expected.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...From midnight tonight to noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 15 below zero
could result in hypothermia or frostbite if precautions are not
taken.
From: Jan 23, 2026 08:30
Until: Jan 23, 2026 23:30
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 4 and
7 inches.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, and northeast Missouri.
* WHEN...From 9 AM Saturday to 6 PM CST Sunday.
* IMPACTS...Travel could be very difficult.
From: Jan 23, 2026 08:24
Until: Jan 23, 2026 23:30
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 5 and
10 inches with locally higher amounts possible.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...From midnight tonight to 6 PM CST Sunday.
* IMPACTS...Travel could be very difficult to impossible.
From: Jan 23, 2026 08:24
Until: Jan 23, 2026 23:30
Winter Storm Watch
* WHAT...Heavy snow possible. Total snow accumulations between 4 and
6 inches possible.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...From late Friday night through Sunday morning.
* IMPACTS...Travel could be very difficult.
* ADDITIONAL DETAILS...Wind chills will drop below 0 degrees for most
locations Friday and Saturday nights as well.
From: Jan 21, 2026 19:25
Until: Jan 22, 2026 10:30
Wind Advisory
* WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, and northeast Missouri.
* WHEN...From 3 PM this afternoon to 6 AM CST Monday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Dec 28, 2025 21:00
Until: Dec 29, 2025 12:00
Dense Fog Advisory
* WHAT...Visibility less than one mile in dense fog.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and northeast Missouri.
* WHEN...Until 9 AM CST Saturday.
* IMPACTS...Low visibility could make driving conditions hazardous.
From: Dec 27, 2025 05:35
Until: Dec 27, 2025 15:00
Dense Fog Advisory
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Saint Charles MO and Warren MO Counties.
* WHEN...Until 10 AM CST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
From: Dec 25, 2025 06:05
Until: Dec 25, 2025 16:00
Dense Fog Advisory
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, and northeast Missouri.
* WHEN...Until 10 AM CST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
From: Dec 25, 2025 06:05
Until: Dec 25, 2025 16:00
Dense Fog Advisory
* WHAT...Visibility one quarter to one half mile in dense fog.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...Until 9 AM CST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Visibility will change rapidly in short
distances. Drivers should be remain vigilant, especially when
approaching low lying areas and areas adjacent to rivers, where fog
is likely to be more dense than outlying locations.
From: Dec 24, 2025 06:29
Until: Dec 24, 2025 15:00
Dense Fog Advisory
* WHAT...Visibility one quarter to one half mile in dense fog.
* WHERE...In Illinois, Clinton IL, Fayette IL, Marion IL, Washington
IL, Monroe IL, Randolph IL, and Saint Clair IL Counties. In
Missouri, Madison MO, Saint Francois MO, and Sainte Genevieve MO
Counties.
* WHEN...Until 9 AM CST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Visibility will change rapidly in short
distances. Drivers should be remain vigilant, especially when
approaching low lying areas and areas adjacent to rivers, where fog
is likely to be more dense than outlying locations.
From: Dec 24, 2025 06:29
Until: Dec 24, 2025 15:00
Cold Weather Advisory
* WHAT...Very cold wind chills between 10 and 20 below expected.
* WHERE...In Illinois, Clinton IL, Washington IL, Monroe IL,
Randolph IL, and Saint Clair IL Counties. In Missouri, Lincoln MO,
Saint Charles MO, Saint Louis City MO, and Saint Louis MO Counties.
* WHEN...From 9 PM this evening to noon CST Sunday.
* IMPACTS...The cold wind chills as low as 10 below zero could
result in hypothermia or frostbite if precautions are not taken.
From: Dec 14, 2025 03:00
Until: Dec 14, 2025 18:00
Winter Storm Watch
* WHAT...Heavy snow possible. Total snow accumulations between 4 and
8 inches possible.
* WHERE...Portions of south central, southwest, and west central
Illinois and east central and northeast Missouri.
* WHEN...From late Friday night through Saturday evening.
* IMPACTS...Travel could be very difficult.
From: Nov 27, 2025 09:25
Until: Nov 30, 2025 06:00
Winter Weather Advisory
* WHAT...Wet snow. Additional snow accumulations up to two inches.
Winds gusting as high as 40 mph.
* WHERE...In Illinois, Monroe IL County. In Missouri, Franklin MO
and Jefferson MO Counties.
* WHEN...Until midnight CST tonight.
* IMPACTS...Plan on slippery road conditions.
From: Nov 29, 2025 12:13
Until: Nov 30, 2025 03:15
Winter Storm Warning
* WHAT...Heavy snow. Additional snow and sleet accumulations between
2 and 4 inches. Winds gusting as high as 35 mph.
* WHERE...Portions of southwest Illinois and east central and
northeast Missouri.
* WHEN...Until midnight CST tonight.
* IMPACTS...Plan on slippery road conditions.
From: Nov 29, 2025 12:13
Until: Nov 30, 2025 03:15
Winter Weather Advisory
* WHAT...Snow. Additional snow accumulations between 2 and 4 inches.
Winds gusting as high as 35 mph.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and northeast Missouri.
* WHEN...Until midnight CST tonight.
* IMPACTS...Plan on slippery road conditions.
From: Nov 29, 2025 12:13
Until: Nov 30, 2025 03:15
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches. Winds gusting as high as 35 mph.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and northeast Missouri.
* WHEN...From midnight tonight to midnight CST Saturday Night.
* IMPACTS...Plan on slippery road conditions.
From: Nov 28, 2025 20:55
Until: Nov 29, 2025 12:00
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches.
* WHERE...Portions of south central and southwest Illinois and
central and east central Missouri.
* WHEN...From midnight tonight to midnight CST Saturday Night.
* IMPACTS...Plan on slippery road conditions.
From: Nov 28, 2025 08:17
Until: Nov 28, 2025 23:30
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches.
* WHERE...Portions of south central and southwest Illinois and east
central and northeast Missouri.
* WHEN...From midnight tonight to midnight CST Saturday Night.
* IMPACTS...Plan on slippery road conditions.
From: Nov 28, 2025 08:17
Until: Nov 28, 2025 23:30
Dense Fog Advisory
* WHAT...Visibility one quarter or less at times in dense fog.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, northeast, and southeast
Missouri.
* WHEN...Until 9 AM CST Friday.
* IMPACTS...Low visibility could make driving conditions hazardous.
From: Nov 21, 2025 01:22
Until: Nov 21, 2025 15:00
Dense Fog Advisory
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Freeze Warning, sub-freezing
temperatures as low as 29.
* WHERE...Portions of southwest and west central Illinois and
central, east central, and northeast Missouri.
* WHEN...For the Dense Fog Advisory, until 9 AM CST this morning.
For the Freeze Warning, until 8 AM CST this morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing. Low visibility could make driving conditions hazardous.
From: Nov 02, 2025 08:21
Until: Nov 02, 2025 15:00
Freeze Warning
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the Freeze Warning, sub-freezing
temperatures as low as 29.
* WHERE...Portions of southwest and west central Illinois and
central, east central, and northeast Missouri.
* WHEN...For the Dense Fog Advisory, until 9 AM CST this morning.
For the Freeze Warning, until 8 AM CST this morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing. Low visibility could make driving conditions hazardous.
From: Nov 02, 2025 08:21
Until: Nov 02, 2025 15:00
Freeze Warning
* WHAT...Sub-freezing temperatures as low as 29.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...Until 8 AM CST this morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
From: Nov 02, 2025 08:21
Until: Nov 02, 2025 14:00
Frost Advisory
* WHAT...Temperatures as low as 32 will result in frost formation.
* WHERE...Saint Louis City MO and Saint Louis MO Counties.
* WHEN...Until 7 AM CST this morning.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
From: Nov 02, 2025 08:21
Until: Nov 02, 2025 13:00
Frost Advisory
* WHAT...Temperatures as low as 32 will result in frost formation.
* WHERE...Saint Louis City MO and Saint Louis MO Counties.
* WHEN...From 1 AM to 7 AM CST Sunday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
From: Nov 01, 2025 18:52
Until: Nov 02, 2025 13:00
Freeze Watch
* WHAT...Sub-freezing temperatures as low as 30 possible.
* WHERE...Portions of south central and southwest Illinois and east
central and southeast Missouri.
* WHEN...From late Saturday night through Sunday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
From: Oct 31, 2025 18:43
Until: Nov 02, 2025 13:00
Freeze Warning
* WHAT...Sub-freezing temperatures as low as 29 expected.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, northeast, and southeast
Missouri.
* WHEN...From 1 AM to 7 AM CST Sunday.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
From: Nov 01, 2025 18:52
Until: Nov 02, 2025 10:00
Freeze Watch
* WHAT...Sub-freezing temperatures as low as 32 possible.
* WHERE...In Illinois, Clinton IL, Marion IL, Washington IL, Monroe
IL, Randolph IL, and Saint Clair IL Counties. In Missouri,
Jefferson MO, Saint Louis City MO, Saint Louis MO, and Sainte
Genevieve MO Counties.
* WHEN...From late tonight through Sunday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
From: Nov 01, 2025 06:56
Until: Nov 01, 2025 22:00
Freeze Warning
* WHAT...Sub-freezing temperatures as low as 30 expected.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, northeast, and southeast
Missouri.
* WHEN...From 1 AM to 7 AM CST Sunday.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
From: Nov 01, 2025 06:56
Until: Nov 01, 2025 22:00
Freeze Watch
* WHAT...Sub-freezing temperatures as low as 29 possible.
* WHERE...Portions of west central Illinois and central, east
central, northeast, and southeast Missouri.
* WHEN...From late Saturday night through Sunday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
From: Oct 31, 2025 18:43
Until: Nov 01, 2025 09:45
Frost Advisory
* WHAT...For the Frost Advisory, temperatures as low as 30 will
result in frost formation. For the Freeze Watch, sub-freezing
temperatures as low as 30 possible.
* WHERE...Portions of west central Illinois and central, east
central, northeast, and southeast Missouri.
* WHEN...For the Frost Advisory, until 8 AM CDT this morning. For
the Freeze Watch, from late Saturday night through Sunday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing. Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
From: Oct 31, 2025 07:16
Until: Oct 31, 2025 22:30
Freeze Watch
* WHAT...For the Frost Advisory, temperatures as low as 30 will
result in frost formation. For the Freeze Watch, sub-freezing
temperatures as low as 30 possible.
* WHERE...Portions of west central Illinois and central, east
central, northeast, and southeast Missouri.
* WHEN...For the Frost Advisory, until 8 AM CDT this morning. For
the Freeze Watch, from late Saturday night through Sunday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing. Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
From: Oct 31, 2025 07:16
Until: Oct 31, 2025 22:30
