PHOENIX – Parts of the Valley received a preview Monday night of what’s expected to be an active week of monsoon weather.
“Our daily chances (for rain) are going to get better and better as we go through the middle and latter portions of this week,” Alex Young of the National Weather Service (NWS) in Phoenix told KTAR News 92.3 FM on Tuesday morning.
Following Monday night’s scattered showers, there’s a 10-20% chance for thunderstorms in the metro Phoenix forecast through Wednesday.
“But then … our chances really increase where we’ll see upwards of 30% to 40% potential on Thursday and then continuing into Friday, as well, with at least a 25% chance of showers and storms,” Young said.
Another above normal temperature day across the Valley will precede a cooling trend to well below normal levels as daily thunderstorm chances increase through the end of the week. Shower and storm chances will favor areas south and west of the Phoenix metro today. #azwx #cawx pic.twitter.com/yg4c4Bkt45
— NWS Phoenix (@NWSPhoenix) September 2, 2025
Furthermore, high temperatures are expected to trend downward as the week progresses, from about 108 degrees on Tuesday to the mid-90s by Friday.
Where did monsoon storms develop on Labor Day?
Looking back, Monday night’s monsoon activity mainly impacted the east and northeast portions of the Valley.
Parts of San Tan Valley, Mesa, Phoenix, Scottsdale and surrounding areas saw strong winds and rain. The rainfall totals generally ranged from a few hundredths to about a third of an inch.
Young said the NWS received reports of downed power lines and trees, as well as blowing dust that limited visibility to under half a mile in some places.
“We saw some wind gusts anywhere from 30 to 50 miles an hour across the east parts of the metro, and we actually saw severe wind gusts at Scottsdale where we had 58 mile an hour wind gusts,” he said.
Gusts surpassed 40 mph at Phoenix Sky Harbor International Airport, but no measurable rain fell at the site, which the NWS uses for the city’s official readings.
How much rain has fallen in Phoenix this monsoon season?
Phoenix’s rainfall total since the monsoon season started June 15 is just 0.5 inches, nearly 1.4 inches below normal for this time of year.
That’s the 11th driest monsoon through Sept. 1 on record. The “rainy” season ends Sept. 30.
“If you do count it through the end of the month … that would be counted as the third driest,” Young said. “So, that’s how we’d end up if we didn’t get another drop of rain the rest of the month.”
KTAR News 92.3 FM’s Ginia McFarland contributed to this report.
The post There’s more monsoon activity in metro Phoenix forecast after Labor Day storms appeared first on KTAR.
