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Mostly cloudy with a t-storm
Mostly cloudy, brief showers
Intervals of clouds and sun
of sunlight, then sets at
of moolight, then sets at
Following a surge of humidity and drenching showers to end the week, dry and cooler air will push southward across the Philadelphia area this weekend. more >
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.