Philadelphia has some of the best weather during the month of October and this weekend will be a good example.   Large sprawling high pressure will be over us on Saturday and a weak front will move through late Sunday.

With high pressure in control, Saturday will be sunny and pleasant. High 67.

With an approaching weak frontal boundary, Sunday will start with some clouds, but become partly sunny and mild.  Some clouds return in the late afternoon with the actual frontal passage.  High 74.