Tucson, Arizona – Dangerously high heat will grip Tucson through the weekend, with highs peaking at 107°F on Sunday before a surge of monsoon moisture brings daily thunderstorm chances through Tuesday.
According to the National Weather Service in Tucson, triple-digit temperatures will continue through early next week, with only light evening breezes offering limited relief. A shift begins Monday, when isolated thunderstorms are expected mainly after 8 p.m., increasing to a 40% chance by Tuesday night.
Tucson residents should prepare for minor flooding in low-lying areas, reduced visibility from blowing dust, and possible lightning hazards, especially during the afternoon commute hours. Northwest winds between 5–7 mph may precede storm activity Monday and Tuesday. Areas north and west of Tucson, including Marana and Oro Valley, could see spotty downpours…