Here are some of our favorite sites to check out the weather in Gatlinburg, TN and The Great Smoky Mountains National Park.  You may see very different conditions on different websites since they may have reporting stations 20-50 miles apart.  The conditions vary greatly in the mountains with a 30 degree difference routinely reported between Gatlinburg and Clingman's Dome.

Webcam of the Great Smoky Mountains National Park (live!)
Intellicast - Gatlinburg Weather
Accuweather - Gatlinburg Forcast
Obergatlinburg Ski Resort - Snow Report
Weather.com - Gatlinburg Weather
Radar for any site in the U.S.

Local Weather (Newfound Gap, Mount LeConte, Cades Cove, Sugarland Center, Oconaluftee