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Mostly sunny and humid
Mostly cloudy and humid
A t-storm around in the p.m.
of sunlight, then sets at
of moolight, then sets at
A wedge of dry air will slowly erode at midweek and will allow drenching showers and thunderstorms to survive the trip into Philadelphia from the Midwest. more >
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.