PHOENIX — Another wave of extreme heat is heading to metro Phoenix, with temperatures expected to climb back above 110 degrees before the end of the weekend.
In fact, the National Weather Service has issued an extreme heat watch for Sunday morning through Tuesday evening.
“Those days we’re expecting temperatures anywhere from 110 to 115 degrees,” NWS meteorologist Chris Kuhlman told KTAR News 92.3 FM on Thursday morning.
An extreme heat watch means the NWS believes dangerous heat is possible, while extreme heat warnings are issued when dangerous heat is happening or imminent.
The warmup continues through the rest of the week and into the weekend as temps reach back towards near and above normal levels. A few spots will get close to 110°F as early as tomorrow, with 110°F-115°F forecasted for most of the lower deserts by next Monday. #azwx #cawx pic.twitter.com/cWTlfm9pzT
— NWS Phoenix (@NWSPhoenix) June 26, 2025
“The watches are an advanced product that we put out … ahead of time,” Kuhlman explained.
The current watch will likely be converted to a warning soon enough.
“It’s probably going to be like at least a 90% chance that it’ll be upgraded,” Kuhlman said.
Phoenix trails close during periods of extreme heat
Due to dangerous conditions, the following Phoenix hiking trails are restricted from 8 a.m. to 5 p.m. on extreme heat warning days:
- Camelback Mountain: Echo Canyon Trail and Cholla trail.
- Phoenix Mountains Preserve: Piestewa Peak Summit Trail and associated trails.
- South Mountain Park and Preserve: Holbert Trail, Mormon Trail, Hau’Pal Loop Trail and access to the National Trail from the Pima Canyon Trailhead.
The South Mountain trails were added to the city’s restricted list this year.
The hottest day of the year so far was June 19, when it reached 117 degrees in the midst of the last extreme heat warning.
Is there any monsoon rain in the Phoenix weather forecast?
Meanwhile, the Valley has yet to see any rain since the monsoon season officially started on June 15. However, that could change later next week, Kuhlman said.
“We’re not absolutely sure the extent of it, but maybe as early as Wednesday, Thursday next week we might have a chance in the Phoenix area,” he said.
KTAR News 92.3 FM’s Colton Krolak contributed to this report.
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