Phoenix, Arizona – The pavement is already warming under bright desert sunshine, and the hottest stretch of weather this week is now taking shape across the Valley. Anyone planning outdoor activities through the afternoon should prepare for rapidly rising temperatures as Phoenix pushes well into triple digits and heads toward even hotter conditions early next week.
According to the National Weather Service in Phoenix, highs are expected to reach around 104 degrees today under clear skies. The bigger story is the steady warming trend that follows. Temperatures climb to 105 Sunday, 108 Monday, 109 Tuesday, and peak near 112 degrees by Wednesday.
Drivers along Interstate 10, Loop 101, Loop 202, and Interstate 17 will notice increasingly harsh conditions during the afternoon commute. Vehicles can heat quickly when parked in direct sunlight. Interior temperatures often climb far beyond the official air temperature.
The broader national weather pattern highlights severe storms and flash flooding across parts of the Plains and Midwest. Arizona sits on the opposite side of that pattern, remaining locked beneath dry, stable air. As a result, sunshine dominates the forecast while rain chances remain absent.
Meteorologists are now tracking a prolonged period of above-normal heat across the Desert Southwest. Overnight lows offer limited relief, staying in the upper 70s to middle 80s through much of the upcoming week.
Residents should limit strenuous outdoor activity during peak heating hours, drink water frequently, and never leave children or pets inside vehicles. Even short exposures become more dangerous as temperatures climb above 110 degrees.
Looking ahead, signs point toward continued above-normal temperatures into late next week, keeping summer heat firmly in control across central Arizona.
Five Day Forecast for Phoenix, Arizona
- Sunday: Sunny, high 105°F, low 78°F
- Monday: Sunny, high 108°F, low 83°F
- Tuesday: Sunny, high 109°F, low 85°F
- Wednesday: Hot and sunny, high 112°F, low 87°F
- Thursday: Hot and sunny, high 113°F, low 87°F
