Heat Index Values Above 105 Degrees Possible; Daily Storm Chances Remain in Forecast
KNOXVILLE, Tenn. (WOKI / WVLT)— East Tennesseans should prepare for several more days of summer heat and humidity as forecasters call for temperatures in the 90s and periodic chances for afternoon thunderstorms through the Fourth of July holiday weekend.
Thursday will begin with sunshine before clouds increase during the afternoon. High temperatures are expected to reach between 94 and 97 degrees, with only a slight chance of an isolated shower or strong thunderstorm, primarily in the Great Smoky Mountains and areas south of Interstate 40. Forecasters say any stronger storms could produce gusty winds and small hail, though most locations are expected to remain dry.
The heat will continue Friday as temperatures climb into the mid-90s. Combined with high humidity levels, heat index values are forecast to exceed 105 degrees in some locations. A passing afternoon or evening shower or thunderstorm remains possible, with overnight lows falling into the lower 70s.
Looking ahead to Independence Day, the forecast calls for partly cloudy skies and continued hot, muggy conditions. Isolated showers and thunderstorms could develop during the daytime hours, but forecasters say most activity should weaken and dissipate by sunset, improving conditions for outdoor celebrations and fireworks displays.
High temperatures on the Fourth of July are expected to reach the lower 90s, with overnight lows in the low 70s.
By Sunday, forecast models indicate a slightly more active weather pattern. Partly to mostly cloudy skies are expected, along with scattered showers and thunderstorms throughout the day. Temperatures will remain seasonably hot, ranging from the upper 80s to lower 90s.
Residents planning holiday activities are encouraged to stay hydrated, take frequent breaks in air-conditioned areas, and limit strenuous outdoor activity during the hottest parts of the day. Weather officials also advise keeping an eye on changing conditions, especially during afternoon and evening hours when thunderstorms are most likely to develop.
