It's going to be a hot day as temperatures climb slightly above normal in the mid-90s this afternoon. Look for scattered clouds. It's going to be mainly dry too. I only see an isolated shower for those west of Chattanooga, tonight mainly after 8 PM. 

Wednesday will bring the remnants of Barry. Sustained winds of 15 mph look likely tomorrow morning through early afternoon. Showers will begin by 3AM-5AM north of Chattanooga, increasing in coverage by daybreak. T-storms will increase in the afternoon producing heavy rain, lightning, and brief gusty winds. Localized flooding will be possible on Wednesday and Thursday. Rainfall amounts from Wednesday through Thursday will produce rainfall totals of 1" to 2". Forecast models are indicating locally higher amounts where some of the stronger thunderstorms develop. Therefore, I can't rule out flash flooding for these two days. 

Temperatures starting Wednesday through Friday should remain in the mid to upper 80s.

The weekend brings isolated t-storm chances in the afternoon. A preliminary look to next week shows a weak cold front arriving on Monday. This will bring a better chance for storms, some on the strong side. We may be looking at overnight low temperatures dropping to the upper 60s by next week!