Phoenix, Ariz. – Triple-digit heat holds steady in the Valley of the Sun, with no meaningful relief in sight. Drivers along I-10 and U.S. 60 should prepare for sweltering commutes, as high temperatures climb into the low 100s through midweek.
According to the National Weather Service, Sunday will reach near 101°F under full sunshine, followed by 103°F on Monday and Tuesday. Overnight lows stay warm, bottoming out in the low 80s, offering little chance for cooling. The NOAA 6–10 day outlook keeps Arizona near-normal on precipitation, meaning the desert heat will dominate with no monsoon storms expected.
Heat risks remain a top concern. Prolonged exposure can cause heat exhaustion or heat stroke, especially for outdoor workers, athletes, and vulnerable groups. Residents are urged to stay hydrated, limit strenuous activity during peak afternoon hours, and never leave children or pets inside vehicles.
While roads remain clear of weather hazards, extreme pavement temperatures can exceed 150°F, posing burn risks to pets and damaging tires. Commuters should check vehicles before long trips and keep water on hand in case of delays.
The extended forecast suggests highs remain near or above 100°F through Saturday, a reminder that September in Phoenix often feels like midsummer. Any break in the heat will likely hold off until late month.
Five-Day Forecast for Phoenix, Arizona
- Monday: Sunny, high 103°F, light afternoon wind
- Tuesday: Sunny, high 103°F, calm evening
- Wednesday: Sunny, high 102°F, breezy afternoon
- Thursday: Sunny, high 99°F, warm overnight low near 74°F
- Friday: Sunny, high 99°F, dry and hot
