NWS Forecast Office Phoenix, AZ

An influx of tropical moisture is expected to reach the Desert Southwest beginning on Sunday, and peaking Monday into Tuesday. This moisture coupled with large scale lift ahead of an approaching weather system will result in good chances for widespread precipitation across Arizona. There is still high uncertainty in rainfall totals as well as the potential for severe weather.

Temperatures will warm up through the weekend, peaking on Saturday. An influx of moisture and cloud cover will result in much cooler temperatures early next week.