Heat Advisory for McHenry Co., IL until 12:00 AM CDT 6/24

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

WWUS73 KLOT 210853
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
353 AM CDT Sat Jun 21 2025



/O.CON.KLOT.HT.Y.0001.250621T1500Z-250624T0500Z/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La
Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern
Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-
Benton-
Including the cities of Roselawn, Yorkville, Gibson City,
Bradley, Byron, Wilmington, Crete, Oxford, Dixon, Dwight, Gary,
Wheaton, Carol Stream, Manhattan, Oswego, Ottawa, Gurnee,
Algonquin, Oregon, Fairbury, Channahon, Portage, Gilman, Buffalo
Grove, DeKalb, Coal City, Peotone, Rockford, Chesterton,
Rochelle, Sycamore, Mundelein, La Salle, Aurora, Kankakee,
Waukegan, Bourbonnais, Kentland, Rensselaer, Woodstock, Lombard,
Naperville, Pontiac, Joliet, Bolingbrook, Plainfield, Mokena,
Merrillville, Streator, Minooka, Mendota, Hammond, Morocco,
Fowler, Plano, DeMotte, Valparaiso, Belvidere, Crystal Lake,
Morris, Marseilles, Beecher, McHenry, Watseka, Paxton, Downers
Grove, and Elgin
353 AM CDT Sat Jun 21 2025 /453 AM EDT Sat Jun 21 2025/

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM CDT /11 AM EDT/ THIS
MORNING TO MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT...

* WHAT...Heat index values around 105 degrees expected.

* WHERE...Portions of central, east central, north central, and
northeast Illinois and northwest Indiana.

* WHEN...From 10 AM CDT /11 AM EDT/ this morning to midnight CDT /1
AM EDT/ Monday Night.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

* ADDITIONAL DETAILS...Heat impacts will be worsened by consecutive
days of hot and humid conditions, with overnight lows in the mid
70s providing little relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Monitor the latest forecasts and warnings for upd...

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