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Partly to mostly cloudy
Some sun, then clouds; mild
Rather cloudy, a shower; fog
Cloudy, showers, mainly later
Rain and drizzle possible
Warmer air with spotty rain and fog will move into Philadelphia by the weekend. 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?