The National Weather Service in Knoxville reports a fair morning with dew-soaked humidity at 100% and temperatures already at 66°F. A partly cloudy night is expected, with lows dropping to a comfortable 68 degrees, giving the city a calm break before a hot, sunny day takes hold. The barometer reads 29.97 in, reflecting the tranquility before an afternoon when the heat index may climb as high as 96, according to the latest NWS update.