Arizona is in for another round of scorching heat this week, especially across the desert areas like Phoenix, Yuma, and El Centro. Temperatures will stay well above 100°F through midweek before a noticeable cool-down arrives by Thursday. While rain chances are extremely low in the Phoenix area, some isolated storms may pop up in a few western parts of the state.
Triple-Digit Heat Holds Strong Through Midweek
Phoenix will sizzle under clear skies and dry conditions, with temperatures expected to reach around 105°F on Tuesday. This heat isn’t unusual for early September, but it still carries risks—especially for vulnerable groups like the elderly or outdoor workers.
Yuma is forecast to be even hotter, holding near 110°F through Tuesday. Globe and El Centro will also see highs well above their normal averages, pushing into the upper 90s and low 100s.
Isolated Storms Possible in Western Arizona
Although Phoenix and most of central Arizona will stay dry, there’s a small chance (under 5%) of isolated thunderstorms today, especially near the Kofa Mountains in northern Yuma County and parts of central La Paz County. These storms aren’t expected to be widespread or long-lasting, but they could bring brief wind gusts and lightning.
Health Advisory: Moderate Heat Risk in Phoenix Metro
The National Weather Service has issued a moderate heat risk advisory for metro Phoenix through at least Wednesday. Residents are strongly encouraged to take precautions, especially during the hottest parts of the day (from 12 p.m. to 6 p.m.).
To stay safe during this heat wave:
Limit outdoor activity during the afternoon
Drink plenty of water, even if you don’t feel thirsty
Wear light, loose-fitting clothes
Check on elderly family members or neighbors
Never leave pets or children in parked cars
Relief Coming Late Week
After days of intense heat, some good news is on the horizon. A low-pressure system from the west is expected to move into Arizona by Thursday, bringing temperatures below seasonal averages. This will be the first major break from the persistent summer heat in weeks, offering cooler mornings and more comfortable afternoons.
Forecast Snapshot for Key Cities
| City | Monday High | Tuesday High | Cooldown Starts | Notes |
|---|---|---|---|---|
| Phoenix | 104°F | 105°F | Thursday | Dry, moderate heat risk |
| Yuma | 109°F | 110°F | Thursday | Hotter, storm chances nearby |
| El Centro | 106°F | 107°F | Thursday | Above average temps |
| Globe | 98°F | 99°F | Thursday | Several degrees above normal |
Arizona’s weather this week will be dominated by extreme heat, especially in Phoenix, Yuma, and surrounding desert areas. While storm chances are minimal, the dry air combined with triple-digit highs means residents must stay alert to heat-related health risks. Relief is coming soon, though—temperatures will start to drop by Thursday, giving Arizonans a long-awaited break from the relentless summer sun.
