 Now, the latest forecast from the KFNX Penguin Air Plumbing and Electrical Weather Center. I'm meteorologist Jim Rinaldi. As we head into the evening, a mainly clear sky, mainly clear overnight, low 88. Saturday, sunny and hot, high 110. Partly cloudy Saturday night, low 90. Sunny and hot for Sunday, high 114. Sunny Monday. From the KFNX Weather Center, I'm meteorologist Jim Rinaldi. Currently in downtown Phoenix, it's 109 degrees.