Tuesday is going to be our first real feel of winter with the actual lows dropping into the 20s and 30s in the Philadelphia region, and wind chill temps will be in the teens and 20s.
Gusts will be out of the Northwest, roughly 20-30 mph during the morning hours but increasing during the daytime up to 40 mph. Combine that with temps only in the mid-low 40s during the day, and we'll have wind chills barely above freezing, even during the peak heating of the day.
CBS News Philadelphia
Now, if this were mid-January, it wouldn't be a huge deal, as we'd both expect it AND be used to it, but the first of the season usually has a bit more impact. Keep in mind your sensitive plants. Yes, the growing season is over, but you may have something out on your porch that needs protection.
As for the

CBS Philly

Daily Voice
Delaware County Daily Times
America News
Associated Press Top News
The Danville Register & Bee Entertainment