Temperatures over 100F forecast for the Valley over the weekend FOX 10 Phoenix Kristy Siefkin's Reports Published May 3, 2018 5:21 PM MST Share Copy Link Email Facebook Twitter LinkedIn Reddit Published May 3, 2018 5:21 PM MST PHOENIX (KSAZ) - The Valley enjoyed pleasant overnight lows and temperatures were not so bad Thursday afternoon. That, however, is about to change, as a rapid warm-up is expected for the weekend. FOX 10's Kristy Siefkin reports.