 Overall, it'll be partly sunny with a high near 94 degrees. Heat index is about 106 possible. An excessive heat warning in effect until 8 p.m. tonight. Otherwise, tonight, showers and thunderstorms likely, mostly overnight. Mostly cloudy, low around 76. Mostly sunny tomorrow, high near 90. Tomorrow night, chance of showers and thunderstorms, most of them overnight. Partly cloudy, low around 74. Friday...