KNOXVILLE, Tenn. (WVLT) - Typical summertime pattern is in full swing with daily storms possible, but more widespread by the weekend. WEDNESDAY: Expect a mix of sun and clouds today, and you might catch a quick, spotty shower or an isolated rogue storm later this afternoon/evening. Highs hit the low 90s, with heat index readings in the mid-90s. THURSDAY: Pretty much a repeat: warm and partly cloudy, with a few isolated pop-up showers or storms during the afternoon.