It looks like a little break in the heat is upon us with the chance for very heavy rainfall over the next several days.
The Hydrometeorlogical Prediction Center (HPC) has forecast 3"+ for our area over the next 4-5 days. Tropical moisture from the Gulf in association with a stalled front will work to create very slow moving thoundershowers that will drop a large amount of rain over a very short period of time.
The main threat will be heavy rainfall, gusty winds, and small hail. You can see all the HPC forecasst maps and discissions here.