Arctic air will blast the region early this week, accompanied by a period of snow.
The coldest air of the season so far will roll into western Pennsylvania, West Virgina, western Maryland and Ohio by early Tuesday.
High temperatures will fail to climb to the 40-degree mark on Tuesday and Wednesday. Gusty winds will contribute to AccuWeather.com RealFeel® temperatures in the upper 20s.
Overnight lows will plummet into the 20s, so people will want to bundle up.
The initial blast of arctic air will be accompanied by a band of rain that will change to snow Monday night. The snow will accumulate a coating to an inch, potentially leading to some slick spots on roads. That is especially true on bridges and overpasses.
As even colder air settles into the region on Tuesday, some lake-effect snow showers will occur.
Content contributed by AccuWeather.com Meteorologist Meghan Evans.
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The taste of September across the north-central United States will give way to a resurgence of heat, steamy air and severe weather by midweek.
Much cooler air with temperatures more typical of mid- to late September will sweep across the Great Lakes and Northeast early this week.
Residents of the northeastern and midwestern United States should not get used to the September-like air pouring in early this week.
The recent April-like rainy stretch of weather will quickly get erased by a resurgence of sizzling heat in northeastern China this week.
Despite escaping the worst of newly-formed Hurricane Dora, southern Mexico will still face locally flooding downpours and rough seas into Monday.
Much of the southern United States dealing with the aftermath of Cindy will get a break from hot, humid and stormy conditions by the end of the weekend.