Chicago didn't see its traditionally hot summer this year, but we're getting an autumn -- earlier than expected.
NBC 5 weather models show a strong cold front following behind heavy morning rain and isolated thunderstorms, ushering in temperatures more commonly found in October than the early days of September.
Much of the Chicago area will see high temperatures in the low- to mid-50s overnight, and temps in far northwest counties will sink into the 40s.
The risk for an isolated severe storm remains for the Wednesday evening hours, primarily in areas south of the city and off to the east in northwest Indiana.
Thursday's high temperatures are predicted to only reach the low- to mid-60s, and on Friday temperatures will struggle to get into the upper 50s.
The next chance for rain comes Friday afternoon with showers developing in the afternoon. A few lake-effect showers are possible Saturday morning before the day turns partly sunny with continued cool temps in the low 60s.
Temperatures in the mid-60s linger through Sunday before rebounding near 70 degrees on Monday and Tuesday.
The National Weather Service warns high waves will create hazardous swimming conditions on Lake Michigan Wednesday night through Friday, particularly at beaches along the Indiana shore.