Phoenix woke up to clear, dry skies and about 88°F this morning, but the real story is what is waiting just around the corner. The National Weather Service has issued an Extreme Heat Watch for the lower deserts from Tuesday, July 7, 2026, through Thursday, July 9, 2026, warning of potentially dangerous afternoon temperatures. Daytime highs are expected to land in the low-to-mid 110s, with only limited overnight cooling for many neighborhoods across the Valley.
When The Heat Peaks
Sunday’s high is forecast to reach about 109°F, with Monday topping out near 111°F before the core of the heat event arrives Tuesday and Wednesday. Forecasters are calling for highs around 113°F on Tuesday and near 114°F on Wednesday, then easing a bit to the low 110s on Thursday. Some neighborhoods could still see readings locally toward 115°F during the peak period.
The Extreme Heat Watch is in effect for July 7–9, and the National Weather Service notes that overnight lows will linger in the mid-to-upper 80s across much of the urban area. In other words, the heat will not really let up, even after sunset.
Where To Cool Off
With nighttime recovery expected to be poor in many parts of metro Phoenix, residents without reliable air conditioning are urged to plan ahead and come up with an overnight strategy before the worst of the heat hits. Maricopa County’s Heat Relief Network operates more than 200 cooling, respite, and hydration sites across the Valley, offering spots to get out of the sun and refill water bottles. Call 2-1-1 or check the regional map for specific locations and hours, or visit the Maricopa County Heat Relief Network.
Practical Tips
During the heat watch period, shift strenuous outdoor work and exercise to early morning or evening, drink water regularly, and take frequent breaks in shaded or air-conditioned places. Never leave children or pets unattended in parked vehicles, even for a short time, and check on older adults and neighbors during the hottest hours of the day.
For life-threatening symptoms of heat stroke, call 9-1-1 immediately. For non-emergency help finding cooling options or other heat relief resources, call 2-1-1.
