From Sean Bellafiore:
The unsettled weather pattern of the past few days that has provided Central Texas with some scattered rainfall is coming to an end. As the rain ends, the traditional summertime heat and humidity will return. Scattered afternoon rain from Tuesday will continue through 10 PM tonight. Rain chances this evening are only near 20% with most locations staying dry. Overnight lows fall into the lower 70s with some clouds by morning.
Temperatures warm slightly Wednesday into the lower 90s as heat index values climb into the middle and upper 90s under partly cloudy skies. Outside of a stray shower or two east of I-35, Central Texas will not see relief from the heat in the form of rain. An isolated shower or two also remains possible Thursday as highs return to the middle 90s with heat index values topping out near 100°.
A cold front will move towards Texas Friday and Saturday but will not have enough energy to get too far south of the Red River. Scattered showers and a few thunderstorms are possible Friday and Saturday near the Metroplex, but rain chances remain less than 20% in our area. High temperatures climb into the middle 90s with heat index values near or slightly above 100°.
An upper-ridge of high pressure builds over the Gulf of Mexico late this weekend and early next week, keeping hot and humid weather around our region. Skies will be mostly clear Sunday, Monday, and on July 4th with high temperatures climbing into the middle and upper 90s. Heat index values may reach as high as 104°. If the center of high pressure draws closer to Central Texas early next week, actual high temperatures may approach the triple digits. High pressure does seem to stay entrenched near our area for much of next week, keeping rain chances extremely low with temperatures near or above normal.