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A little rain
Rain; areas of morning fog
Plenty of sunshine
of sunlight, then sets at
of moolight, then sets at
Despite the calendar flipping to December, snow is not in the works for Philadelphia this week. Mild air and rain will affect the area through Wednesday. more >
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.