 He says areas like Chico and Redding are expected to hit highs of around 118 degrees. That excessive heat warnings will persist for the Central Valley, Foothills, and Sierras at least until Tuesday. We still have the excessive heat warning for the Valley, Delta, and Foothills that runs through Tuesday evening. Alongside this hot weather, fairly dry conditions are expected to continue as well with elevated fire weather conditions persisting through the weekend and into next week.