By early Memorial Day morning around 5:35 a.m. MST, Phoenix was already waking up warm and partly cloudy at about 82°F, with the day set to climb toward a high near 97°F for Monday, May 25, 2026. Morning clouds should thin out, letting the sun take over and turning the midday and afternoon stretch into the hottest window for barbecues, parades, and pool time. If you are headed outside, bring plenty of water, find shade when you can, and try to time the most strenuous activities for early morning or later in the evening to dodge the peak heat.
Afternoon Forecast And Midweek Shift
The National Weather Service is calling for a high near 97°F today, with temperatures slipping to around 95°F by late afternoon and holding in the mid‑90s through Tuesday. Scattered showers are expected to stay up in Arizona’s high country, while a Pacific low starts to shake things up by midweek. That system will crank up southerly winds Tuesday and especially Wednesday, with gusts in the 20 to 30 mph range and afternoon humidity dropping into the 10 to 15 percent range. Together, those ingredients will push fire‑weather concerns higher in brushy and rural areas, according to NWS Phoenix.
Plan Ahead: Heat Safety And Cooling Spots
Try to avoid heavy outdoor work or workouts from late morning through mid‑afternoon, and keep water on hand even for short trips outside. If you have to be active in the heat, take frequent breaks in the shade and watch closely for any signs of heat illness. The City of Phoenix operates cooling centers, hydration stations, and respite sites that are free and open to everyone, with no ID required, so call 2‑1‑1 or check locations and hours on the city site before you head out. If you are hiking or traveling into rural areas, pack extra water and keep tabs on the forecast, since the gusty winds could make trail and travel conditions trickier than usual.
What Changed Since Our Last Preview
In our May 20 outlook, we had flagged triple‑digit holiday highs, but the latest forecast now keeps Phoenix a few degrees cooler for Memorial Day while putting more emphasis on that strengthening midweek wind risk, which could affect travel and outdoor events. For context, see our earlier triple‑digit holiday heat preview. We will post updates if watches or advisories are issued, so check back before heading to large outdoor gatherings.
