 We have some big heat with us for the upcoming weekend, plus the chance for thunderstorms. Mostly cloudy tonight, only a slim chance for rain. Lows fall into the low to mid-70s. Partly sunny and very hot Saturday, only a slim chance for rain. Highs in the low to mid-90s. Heat index values up to 110. And then scattered showers and storms are more likely Sunday as a cold front arrives. Highs will stay in the low to mid-90s.