Phoenix is already roasting on Monday, June 22, 2026, under dry, sunny skies, with a forecast high near 109°F. Overnight will not offer much relief, with lows only slipping into the low 80s across much of the metro. Winds stay mostly tame, so the main concern is plain old heat stress rather than dust, wind, or storms.
Midweek Extreme Heat Watch
The National Weather Service has posted an Extreme Heat Watch for parts of the lower deserts from Wednesday morning through Thursday evening, calling for highs of 110–114°F and a localized Major Heat Risk. According to NWS Phoenix, people who work outdoors, older adults, and anyone without reliable air conditioning should be especially cautious.
What To Expect This Week
Temperatures climb into the low 110s by Tuesday, then hover near 112°F on Wednesday and Thursday before backing off a bit late in the week. Overnight lows will stay stubbornly high, mostly in the low to mid 80s, so there will be very little overnight cooling. Later in the week, winds may pick up with gusts up to 20–25 mph, which could raise localized fire-weather concerns, particularly in dry, brush-covered outskirts.
Beat The Heat
If your air conditioning is unreliable or nonexistent, call 2-1-1 or use the Maricopa County Heat Relief Network to locate cooling centers and hydration stations. According to Maricopa County, the regional network operates through the summer and can assist with finding sites and transportation. Drink plenty of water, skip strenuous activity during the middle of the day, and check in on elderly or otherwise vulnerable neighbors during peak heat.
Commute and Event Notes
Evening events and outdoor jobs should plan around lingering heat, so schedule the heaviest tasks for early morning or later in the evening when temperatures are at least a bit lower. The city has extended cooling-site hours in some neighborhoods this year as part of its 2026 heat-response plan, and employers are being urged to adjust schedules where they can. If someone shows signs of heat exhaustion or heat stroke, move them to a cool place and call 911 immediately.
