Two rounds of storms will move through Oklahoma Thursday and Friday. Primarily affecting areas along and north of I-40. Most computer models have a sharp drop off in precipitation totals south of this line. The storms move out late Friday night and the heat starts building for the weekend.
Long term, the upper level ridge of high pressure will build back over the central US for the remainder of July and into early August. Temperatures will soar during this time with 100s making a strong statement across many states. An example is shown below for July 21st just to give you an idea.
August should return to more normal conditions as the ridge weakens and shifts position as we round out our summer. We should get more rain at that time as well.