 And because of that, the National Weather Service has issued excessive heat warnings for both today and tomorrow between 11 a.m. and 8 p.m. Today and tomorrow, about a 30% chance of a pop-up shower or storm during the late afternoon and evening hours. But a cold front is going to move through on Wednesday with highs in the mid to upper 90s. Scattered showers and storms likely Wednesday with that cold front. That'll bring us some welcome rain and some relief. Highs in the 80s late week with lower humidity.