 They'll start early if they do start. 40% chance we'll get those showers and thunderstorms Wednesday. Partly sunny, high near 94. Heat index is as high as 103. Wednesday night, chance of showers and thunderstorms mostly cloudy, low around 77. Thursday, a chance of showers and thunderstorms partly sunny, high near 90. At 621, 76 degrees and foggy at WDEL.