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A full day of sunshine
Mostly sunny and nice
Sunny and nice
of sunlight, then sets at
of moolight, then sets at
After storms clipped Chicagoland early Sunday, drier air will filter into the area for the rest of the week. more >
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.