From Rusty Garrett:
Expect a day Wednesday, similar to Tuesday. With dew points remaining in the low and middle 70s, afternoon highs will feel more like the upper 90s to low 100s.
A low chance of rain is in the forecast Wednesday afternoon, but rain chances depend almost entirely on overnight rainfall in Central and Southern Oklahoma. If any thunderstorms form Wednesday, they may quickly strengthen. As of now, much of Central Texas will remain dry Wednesday.
An upper-air disturbance moves through Central Texas Thursday and Friday, allowing for more widespread showers and thunderstorms. Timing of Thursday's rainfall is key in regards to the potential for severe weather. Morning rain will lessen the severe risk, while a dry morning may enhance an afternoon severe weather risk. Although some strong thunderstorms are also possible Friday, heavy rain seems to be the primary severe weather threat. It's still a bit too early for details, but plan on some rain and storms Thursday and Friday.