Knoxville rolled into Wednesday, July 8, under clear but muggy skies in the low 70s, and the rest of the day is shaping up to be warm and unsettled. Highs are expected to top out near 89°F, with the heat index pushing toward a sticky 96°F by midafternoon. A 40% chance of showers and thunderstorms develops in the afternoon, mainly after 2 p.m., with the potential for brief heavy downpours and gusty winds.
Afternoon Storms And Heat
Forecasters at the National Weather Service office in Morristown say scattered storms are likely each afternoon and early evening through the rest of the week, focusing on the valley and higher terrain. The main concerns are strong or gusty winds, lightning, and isolated flash flooding where storms repeatedly move over the same area. The office also notes that the pattern is expected to turn wetter into the weekend, increasing the odds of more widespread heavy rain Friday into Saturday.
Timing And Commute Impacts
Patchy fog in low-lying spots this morning could slow parts of the early commute, but visibility should improve by mid-morning. Southwest winds stay on the light side today, around 0–5 mph, although stronger storms could kick up higher gusts. Winds then pick up a bit to 5–10 mph on Thursday. Anyone with outdoor plans will want to tackle them earlier in the day and be prepared to head inside quickly if thunder starts to rumble.
Where To Cool Off
Local cooling centers and community shelters are on standby for high-heat days, including Knox Area Rescue Ministries at 418 N. Broadway and the Volunteer Ministry Center at 511 N. Broadway. Hours and activations can change, so people are advised to check before heading out by calling 2-1-1 or reviewing local coverage for the latest details. Those listings were reported by WVLT.
Tonight Through The Weekend
Tonight keeps a chance of showers and storms in the cards, with lows near 71°F and roughly a 45–50% chance of precipitation. Most spots should see light rainfall amounts, though locally higher downpours remain possible. Friday and Saturday are expected to be more active, with forecasters pointing to an increased flood risk where repeated heavy showers occur, which could disrupt outdoor plans. An umbrella will be a smart accessory, and drivers are reminded to avoid flooded roadways; when thunder roars, go indoors.
