A weather system moving across northern Arizona is set to bring modest thunderstorm chances and cooler weather to the Phoenix area. According to the National Weather Service, thunderstorms are most likely in higher terrain areas east of Phoenix, with activity tapering off by Monday night.
Starting Tuesday, dry and mild conditions will settle in, with temperatures expected to hover 5 to 10 degrees below normal throughout the week. Some areas may see gusty winds, particularly in western Imperial County, where wind advisories are in place for Monday evening. Cooler morning lows, possibly reaching the upper 50s in Phoenix suburbs, are expected by midweek.