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Times of clouds and sun
Areas of fog in the morning
Colder with clouds breaking
of sunlight, then sets at
of moolight, then sets at
More seasonable conditions will return to the Boston area this weekend, following mid-October warmth through 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.