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Clear and seasonably cool
Intervals of clouds and sun
of sunlight, then sets at
of moolight, then sets at
Dry and sunny conditions will continue in San Francisco for the official start to winter and the Christmas holiday. 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?