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Mostly sunny and pleasant
Sunny and pleasantly warm
of sunlight, then sets at
of moolight, then sets at
Drier air will filter into the Chicago area for the rest of the week, resulting in dry skies and clear conditions to kick off the first week of fall. more >
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.