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Some sun returning; cooler
Sunny and colder
Sun and areas of high clouds
of sunlight, then sets at
of moolight, then sets at
Warmer air will move into Washington, D.C., starting later this week. more >
Dec 16, 2013; 5:00 AM ET
Symptoms caused by the common cold can often resemble those associated with the influenza virus. So how do you differentiate between the two?