WGN Meteorologist Tom Skilling recaps the 7-day forecast, including temperatures expected to reach the 90-degree mark as scattered thunderstorms move into the area.

Thunderstorms hit the Chicago area this morning, another in a round of storms that's expected to continue this afternoon and maybe through the weekend, according to the National Weather Service.

A weakening line of storms with frequent lightning, sudden downpours and winds of about 45 mph extended from North Aurora to Prospect Heights as it moved east toward Chicago, according to the weather service.

As the storms moved through, the temperature at O'Hare International Airport dropped from 81 degrees at 10 a.m. to 68 degrees at 11 a.m., while Midway Airport's temperature remained at 85 degrees.

More storms are expected this afternoon and evening, as lows drop into the mid-60s to low 70s. Highs Thursday are expected to reach the mid-80s inland, with cooler temperatures near the lake, and a 50 percent chance of showers and thunderstorms.

Friday again will see highs in the 80s and a 50 percent chance of showers and storms. The chance of storms is expected to diminsh over the weekend, as temperatures moderate slightly.

For updates, check the Tribune's weather page.

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