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

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

WWUS73 KLOT 221958
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
258 PM CDT Sun Jun 22 2025



/O.CON.KLOT.HT.Y.0001.000000T0000Z-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 Oswego, Streator, La Salle, Pontiac,
Channahon, Elgin, Dwight, Ottawa, Byron, Crystal Lake, Fowler,
Oregon, Sycamore, Buffalo Grove, Morris, DeKalb, Mokena, Carol
Stream, Watseka, Peotone, Marseilles, Plainfield, Mundelein,
Beecher, Oxford, Kankakee, Waukegan, Kentland, Minooka, Rochelle,
Bradley, Hammond, Gurnee, Algonquin, Bourbonnais, Paxton,
Bolingbrook, Wilmington, Merrillville, Rensselaer, Roselawn,
Gilman, Woodstock, Fairbury, Naperville, Morocco, Chesterton,
Portage, Coal City, Manhattan, Belvidere, Mendota, Aurora,
DeMotte, Rockford, Gibson City, Joliet, Gary, Downers Grove,
Crete, McHenry, Wheaton, Plano, Dixon, Valparaiso, Lombard, and
Yorkville
258 PM CDT Sun Jun 22 2025 /358 PM EDT Sun Jun 22 2025/

...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/
MONDAY NIGHT...

* WHAT...Heat index values of up to 105 to 110 degrees occurring
this afternoon and peak afternoon heat indices of 100 to 105
degrees expected on Monday.

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

* WHEN...Until 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
to upper 70s providing limited 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.

&&


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