WWUS73 KLOT 170722
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
222 AM CDT Sat Oct 17 2026

ILZ003>005-008-010>012-171300-
/O.CON.KLOT.FZ.W.0002.261017T1000Z-261017T1300Z/
Winnebago-Boone-McHenry-Ogle-Lee-De Kalb-Kane-
Including the cities of Dixon, DeKalb, Byron, McHenry, Aurora,
Rochelle, Belvidere, Algonquin, Sycamore, Rockford, Woodstock,
Crystal Lake, Elgin, and Oregon
222 AM CDT Sat Oct 17 2026

...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Low temperatures near freezing are expected.

* WHERE...Boone, De Kalb, Lee, Ogle, Winnebago, Kane, and McHenry
  Counties.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Frost and freeze conditions could kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

ILZ023-032-033-039-108-INZ001-002-010-011-019-171730-
/O.NEW.KLOT.FR.Y.0006.261018T0800Z-261018T1300Z/
Kankakee-Livingston-Iroquois-Ford-Eastern Will-Lake IN-Porter-
Newton-Jasper-Benton-
Including the cities of Morocco, Rensselaer, Portage, Chesterton,
Gary, Kentland, Gibson City, Crete, Watseka, Gilman, Beecher,
Kankakee, Paxton, Merrillville, Bourbonnais, Fairbury, Bradley,
Pontiac, Fowler, Oxford, Peotone, DeMotte, Valparaiso, Hammond,
Roselawn, and Dwight
222 AM CDT Sat Oct 17 2026 /322 AM EDT Sat Oct 17 2026/

...FROST ADVISORY IN EFFECT FROM 3 AM CDT TO 8 AM CDT SUNDAY...

* WHAT...Low temperatures in the low to mid 30s will result in frost
  formation.

* WHERE...In Illinois, Livingston, Ford, Iroquois, Eastern Will, and
  Kankakee Counties. In Indiana, Benton, Jasper, Lake IN, Newton, and
  Porter Counties.

* WHEN...From 3 AM CDT to 8 AM CDT Sunday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

ILZ006-171300-
/O.CON.KLOT.FR.Y.0005.261017T1000Z-261017T1300Z/
Lake IL-
Including the cities of Buffalo Grove, Waukegan, Gurnee, and
Mundelein
222 AM CDT Sat Oct 17 2026

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING FOR
WESTERN LAKE COUNTY...

* WHAT...Low temperatures in the mid 30s will result in frost
  formation.

* WHERE...Western Lake IL County.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

ILZ019-020-171300-
/O.CON.KLOT.FR.Y.0005.261017T1000Z-261017T1300Z/
La Salle-Kendall-
Including the cities of Streator, Oswego, La Salle, Plano, Mendota,
Marseilles, Ottawa, and Yorkville
222 AM CDT Sat Oct 17 2026

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* WHAT...Low temperatures in the mid 30s will result in frost
  formation.

* WHERE...La Salle and Kendall Counties.

* WHEN...Until 8 AM CDT this morning.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

- Izzi