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

Cooler, less humid air for the days ahead

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Monday morning’s rain yielded to afternoon sunshine at Chicago, but the added moisture caused dew points to surge between 70°-75° by evening.
South and east of Chicago, strong thunderstorms erupted in late afternoon, prompting severe weather warnings south of Kankakee, and even a tornado in St. Joseph County in southern Michigan.
All of the turbulent, muggy weather comes to an end later today, with refreshing north winds and falling humidity by evening. The next few days that follow will be delightful. Wednesday and Thursday both feature a fresh lake breeze with comfortable temperatures and humidity.
Thereafter, the cool Canadian high pressure responsible for the pause in summerlike temperatures begins to moderate in the intense July sunshine.
As a result, temperatures climb a little each day, reaching 90° by next Monday.
-Dennis Haller, WGN-TV Meteorologist