CA Phoenix AZ Zone Forecast for Saturday, October 21, 2017 _____ 042 FPUS55 KPSR 220921 ZFPPSR Zone Forecast Product for Southwest Arizona/Southeast California National Weather Service Phoenix AZ 221 AM MST Sun Oct 22 2017 This is an automatically generated product that provides average values for large geographical areas and may not be representative of the exact location that you are interested in.