Mugginess lingers in Chicago ahead of cold front

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Morning forecast for Chicagoland on Sept. 21st

FOX 32's Mike Caplan breaks down today's weather outlook.

Transition day as we move from a hot air mass to a cool Canadian one. It will be warm and muggy this morning. 

Chicago should hit 80 degrees with southern burbs a little warmer, and northern burbs a few ticks cooler. The cold front oozes in and temps will ease back a bit late this afternoon. 

A shower or storm is possible with the southern viewing area favored. 

Tonight temps drop into the 50s. 

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Tomorrow will be much cooler with highs in the mid 60s under mostly sunny skies. 

Similar temps on Friday with a bit more cloud cover. Showers are possible at night leading into a modest warmup on Saturday. Mid 70s with mostly sunny skies. Sunday will be a couple of degrees cooler with a few light showers around.

Fiona is a Cat 4 hurricane with 130mph sustained winds. It’s going to pass far enough west of Bermuda to deal those islands a glancing blow. 

By Saturday, Fiona will slam into Newfoundland possibly as a Cat 3 hurricane.

Gaston is a tropical storm in the North Atlantic and could bring heavy rains to the Azores in coming days.