Chicago Weather Alert: Record-setting 120° heat index

Chicago Weather Alert: Rain coming soon

CHICAGO (CBS) -- If you think it's never felt this hot in Chicago before, you're right. 

CBS 2 Chief Meteorologist Albert Ramon reports, As of 3 p.m., the heat index had hit 120°, the hottest "feels like" temperature in recorded history in Chicago.  

The actual temperature hit 100° at O'Hare by 3 p.m., making it the hottest day in the city in more than a decade, since July 6, 2012, when it reached 103°. It also tied the record temperature for Aug. 24 in Chicago, set in 1947.

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This comes after Chicago set an Aug. 23 record on Wednesday, when the temperature reached 98°, topping the old {Aug. 23 record of 97° in 1947. The heat index topped out at 116° on Wednesday, tied for the second highest on record for the city, a mark not seen since 1995.    

A Severe Thunderstorm Watch until 10 p.m. for Lake (IL) and McHenry County.

A front will move into the area shortly and could be the focus for strong to severe thunderstorms. Damaging winds and large hail are the primary concerns.

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An Excessive Heat Warning is in effect until 8 p.m. 

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CBS

According to CBS 2 Meteorologist Mary Kay Kleist, you can expect 110-115 degrees heat index values. 

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A cold front across southern Wisconsin is headed our way this evening. The National Weather Service has issued a severe thunderstorm watch along parts of the Illinois-Wisconsin state line through 10 p.m., including Lake, McHenry, and Boone counties in Illinois.

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Damaging winds and hail are possible with any stronger storms that may form. Winds quickly turn northeasterly behind the front later this evening, ushering in a cooler and more stable air mass.

The weekend will feature fair skies and cooler-than-average temperatures. The average high is 82 degrees. Lake Michigan's water temp is 76 degrees.

CBS

TONIGHT: EVENING STORM CHANCE. THEN BREEZY & COOLER. LOW 71.

FRIDAY: PARTLY SUNNY. HIGH 83.

SATURDAY: PARTLY SUNNY. HIGH 76.

SUNDAY: PARTLY SUNNY. HIGH 75.

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