Phoenix, Arizona – Relentless heat returns to central Arizona this weekend, with Phoenix expected to reach 109°F both Saturday and Sunday, prompting renewed health and travel advisories. Daytime highs will remain near or above 106°F through Tuesday, creating dangerous conditions for anyone outdoors or traveling on major roads like I-10 or Loop 202 during peak heat hours.
According to the National Weather Service in Phoenix, Saturday will bring sunny skies with light winds turning westerly at 5 to 10 mph by afternoon. Sunday and Monday continue the pattern with nearly identical highs near 109°F and minimal cloud cover. Low temperatures will stay warm overnight, lingering in the mid-80s — offering little relief for uncooled homes or unsheltered residents.
Heat-sensitive groups — including older adults, outdoor workers, and pets — should avoid prolonged exposure and drink water frequently. Valley Metro transit riders should also prepare for extended sun exposure during commutes.
While skies remain mostly clear through Tuesday, early signs of monsoon activity could arrive by Wednesday, with a 20% chance of thunderstorms. This chance increases slightly on Thursday to 30%, offering brief but isolated relief from the extreme heat.
Extended Outlook (Saturday–Tuesday):
- Saturday [109°F]: Sunny, light west wind
- Sunday [109°F]: Sunny, light afternoon breeze
- Monday [109°F]: More of the same — hot and dry
- Tuesday [108°F]: Slight breeze, very hot
- Wednesday [106°F]: Chance of storms late
