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A couple of showers and thunderstorms
Not as warm with a t-storm
Mostly sunny and pleasant
Some sun, a t-storm possible
of sunlight, then sets at
of moolight, then sets at
Fresh cooler and less humid air will settle over the Boston area for Thursday and Friday. more >
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.