 Now, the latest forecast from the KFNX Penguin Air Plumbing and Electrical Weather Center. I'm meteorologist Jim Rinaldi. We have an excessive heat warning in effect. This afternoon, clear skies, a sunny hot day today with a high of 116. It'll be mainly clear tonight, low 88. Plenty of sunshine and hot Saturday, high 114. Sunday, a sunny hot day, high 112. Plenty of sunshine and hot Monday, high 114. Currently, in downtown Phoenix, it's 99 degrees.