A stray shower is possible for our Sunday evening, but it is unlikely. The heat is a bigger issue. Temperatures in the 90s with near-100 heat indices will hold on through 6-7 PM. Temperatures will drop off into the 70s after 10 PM. The night will be muggy with lower 70s for lows.
That means if you want to light the grill, this evening is a good time for it! Temperatures will ease back from near 90 around 6 PM to mid-80s by 7 PM and low 80s by 8 PM.
Our Monday morning drive and the trip out to the bus stop will be muggy but calm. A stray shower or two becomes possible starting around noon, when temperatures will already be climbing to near 90 degrees. A few showers will form through the afternoon. They can be heavy at times. Widespread showers are not likely, but the entire Tennessee Valley is fair game for a heavy shower or thunderstorm. The showers will end by 6-7 PM.
Our next weather maker is beginning to come together over the Central Rockies. It will bring more widespread rain on Wednesday. This system may set up camp and stick around through next weekend and into the following week. That would set up a rainy and unseasonably cool weather pattern for us from late this week through at least early the folowing week.