 Now, the latest forecast from the KFNX Penguin Air Plumbing and Electrical Weather Center. I'm meteorologist Jim Renau. An excessive heat warning is in effect. This afternoon, sunny and hot, high 116. A clear night tonight, low 88. Sunny and hot Saturday, high 114. Sunday's going to be a sunny, hot day, high 112. From the KFNX Weather Center, I'm meteorologist Jim Renau. Currently in downtown Phoenix, it's 118 degrees.