Phoenix, Ariz. – The pavement is already shimmering under a powerful July sun, and temperatures are climbing fast across the Valley. While the morning remains mostly quiet, another round of monsoon moisture could spark thunderstorms by evening, creating a sharp shift after a hot afternoon.
According to the National Weather Service in Phoenix, temperatures will soar to around 104 degrees Monday, with light winds becoming westerly during the afternoon. The hottest part of the day will arrive between 2 p.m. and 6 p.m., making outdoor work and recreation increasingly dangerous.
A 30 percent chance of showers and thunderstorms develops Monday evening, mainly between 11 p.m. and midnight. While many neighborhoods may stay dry, any stronger storm could produce brief heavy rain, gusty outflow winds approaching 25 mph, lightning, and rapidly changing driving conditions. Travelers along Interstate 10, Loop 101, Loop 202, and State Route 51 should remain alert for sudden visibility reductions caused by blowing dust near developing storms.
Tuesday stays hot with a high near 103 degrees and another 30 percent chance of thunderstorms before conditions gradually improve. By Wednesday, skies become mostly sunny with another high near 104 degrees, while only isolated storm chances linger. Thursday turns even hotter with highs pushing 109 degrees, reinforcing the need for heat safety across central Arizona.
Drink water frequently, take breaks in air-conditioned spaces, and avoid strenuous outdoor activity during the afternoon. Never leave children or pets inside parked vehicles, where temperatures can become life-threatening within minutes.
Five-Day Forecast for Phoenix, Arizona
- Monday: High 104°F. Sunny. Evening 30% chance of showers and thunderstorms.
- Tuesday: High 103°F. Mostly cloudy early, then mostly sunny. 30% chance of storms.
- Wednesday: High 104°F. Mostly sunny. Slight evening storm chance.
- Thursday: High 109°F. Sunny and significantly hotter. Slight nighttime storm chance.
- Friday: High 110°F. Sunny and hot with a 10% chance of evening thunderstorms.
