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Partly sunny and hot
Hot with plenty of sunshine
Mostly sunny and hot
of sunlight, then sets at
of moolight, then sets at
Sunny skies and very warm conditions will persist through the week in the Dallas-Fort Worth Metroplex. more >
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.