The National Weather Service in Knoxville reports a foggy start to the day with visibility down to 4 miles and a heavy blanket of humidity at 100%. As per the latest update, which came in at 6:15 am EST, the fog is expected to give way to a mostly sunny sky, with temperatures climbing to a high near 81 degrees Fahrenheit. The calm of the early morning is set to transition into south winds reaching 10 to 15 mph, and occasional gusts could push past that, hitting as high as 20 mph.