Following a very warm start to the month of November in the Midwest and Northeast, rain will help usher in cooler air to wrap up the week.
While the cooldown will be significant given how warm it has been the past few days, high temperatures after the transition will still be near average for this time of year.
A cold front will steadily move from the Midwest on Thursday to the East Coast on Saturday, igniting the change.
After reaching the 70s in Chicago and St. Louis Thursday, temperatures will drop 10-20 degrees on Friday.
As the front slides eastward on Friday and Saturday, it will lose some of its punch. With less moisture in play, less rain is expected along the East coast than the Midwest.
Despite less rain with the front, the change in temperature will be similar in the East over the weekend.
The near-record warmth Friday with highs getting well in the 70s will be replaced by afternoon temperatures in the 50s from Boston to Washington, D.C., by Sunday.
The cold front will move off the East Coast Saturday night, taking the rain with it.