WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.

Extreme heat in Chicago--How often?

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Dear Mr. Skilling,
My teacher, Mrs. Denning, said Chicago sometimes gets very hot weather, and she said
it is a scorcher when it hits 100 degrees. How many days have been that hot, and what
is Chicago's hottest temperature?

---Ashley Jameson (5th grade)

Dear Ashley,

Few Chicagoans would disagree with Mrs. Denning when she calls a 100-degree day a scorcher. Since the start of Chicago's temperature records on Nov. 1, 1870,the city has had some real scorchers. Chicago has logged 61 days with temperatures of 100 degrees or higher, and the last time it happened was July 24, 2005, when it hit 102. Chicago's official highest temperature is 105(July 24, 1934), when the thermometer was at the University of Chicago. One day earlier it was 109 at Midway Airport, and that is Chicago's highest recognized, though unofficial, temperature.