Knoxville is starting Friday, August 21, near 72 degrees under partly cloudy skies, with humidity making the morning feel decidedly heavier than the temperature suggests. A few early showers or thunderstorms are possible before the day turns brighter and hotter.
Afternoon Storms Bring Brief Downpours
Temperatures should rise through the 70s and low 80s before reaching about 88 degrees, with the heat index potentially touching 95. The overall chance of rain is 40%, with the best odds arriving from mid-afternoon into the early evening as scattered thunderstorms develop.
Around Knoxville, storms are expected to be more isolated than in the East Tennessee mountains, according to the National Weather Service in Morristown. Any storm could still bring a quick downpour and lightning, while west winds remain light at 5 mph or less.
Showers and thunderstorms could linger into Friday evening, with rain chances staying near 40% before midnight. Skies should turn partly cloudy overnight, with a low near 69 degrees and light north winds.
Sunny Weekend Arrives After Friday’s Storms
Saturday looks mostly sunny and warm, with a high near 88 degrees and a low around 67. Sunday should be even quieter, bringing sunshine, a high near 87 and a noticeably cooler overnight low near 62.
That drier stretch marks a welcome break from the recurring storm pattern Hoodline recently tracked. Monday stays mostly sunny near 86 degrees, although a slight chance of showers returns Monday night.
Storm Chances Rebuild By Midweek
Tuesday remains mostly sunny with a high near 85 and only a slight chance of showers or thunderstorms. Rain chances increase Wednesday and Thursday, when afternoon storms could return and Wednesday night carries a 50% chance of showers and thunderstorms.
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