 I'm hydrologist Jim Rinaldi with an excessive heat warning in effect. This afternoon, sunny and hot, a high 114. Can't rule out a stray shower or thunderstorm this evening. Otherwise, a partly cloudy night tonight, low 90. Another hot day Saturday, sunny, high 114, hot Sunday. From the KFNX Weather Center, I'm hydrologist Jim Rinaldi. Currently in downtown Phoenix, it's 108 degrees.