Impending Monsoon Storms Poised to Clash with Rising Temperatures

Isolated storms graced Arizona on Sunday, but a significant shift toward hotter and drier weather is on the horizon, beginning with Labor Day.

Sunday afternoon saw the possibility of isolated showers, primarily tracking across high desert areas. While the bulk of the state may remain dry, the valley could experience isolated storms between 5 PM and 10 PM. Residents should be alert for strong outflow winds and blowing dust, even though a complete washout isn’t expected. Those with outdoor plans should keep an eye on the radar.

As the new week begins, the state will atmosphere will transform under a dominant high-pressure system. Labor Day promises a mostly sunny sky, with temperatures in the valley soaring to 109 degrees, while the high country will see highs ranging from the 80s to 90s, including a comfortable 83 degrees in Flagstaff.

The persistence of high pressure will temporarily end monsoon activity across much of Arizona. By Thursday, lower desert highs could reach an alarming 114 degrees. Phoenix is on track to break its 2023 record for days with temperatures surpassing 110 degrees, having already logged 54 such days so far this year, just one shy of last year’s record of 55 days.

Here’s a look at the upcoming week:

SUNDAY: 108°F / 85°F – Mostly Sunny, p.m. isolated storm possible, blowing dust
LABOR DAY: 109°F / 87°F – Sunny sky
TUESDAY: 110°F / 87°F – Sunny & hotter
WEDNESDAY: 112°F / 88°F – Sunny & hotter
THURSDAY: 114°F / 89°F – Sunny & hotter
FRIDAY: 113°F / 88°F – Sunny & steamy
SATURDAY: 111°F / 86°F – Sunny & steamy

Conditions across Arizona have varied greatly, with the state experiencing its share of severe weather. For a closer look at the impact of thunderstorms, floods, and fires, viewers can check out a compilation of relevant videos on the 12News YouTube channel.

Residents are encouraged to share any storm-related photos and videos they capture safely through the 12 News app or by emailing pictures@12news.com. Utilize the hashtag #BeOn12 on social media for greater visibility.