Monsoon activity expected all week; Phoenix’s long dry spell ends with 0.01 inches

Did you get any rain from the monsoon storms that rolled through metro Phoenix on Sunday night and Monday morning?

If not, don’t feel left out. The monsoon is expected to remain active throughout the week.

“Most places, though, in the Valley missed out on beneficial rainfall,” meteorologist Matt Salerno of the National Weather Service in Phoenix told KTAR News 92.3 FM on Monday morning. “There were a few locations in far eastern Maricopa County and Pinal County that did receive around half an inch to a three-quarters of an inch if you were lucky to be underneath one of the thunderstorms.”

Good morning! A beautiful sunrise captured from our office. The clouds left over from the rain last night are lighting up this morning. #azwx⛅️📸 pic.twitter.com/KKr5ps9gFz

— NWS Phoenix (@NWSPhoenix) July 13, 2026

Phoenix ends dry spell of more than 100 days

Phoenix Sky Harbor International Airport, which the National Weather Service uses for the city’s official readings, registered 0.01 inches of rain a little after 1 a.m. Monday. It was Phoenix’s first measurable precipitation in 105 days, the city’s 19th longest dry spell on record. The airport hadn’t registered rain since March 29.

At 1:13 AM MST, Phoenix Sky Harbor recorded 0.01" of rainfall, which is the airport's first measurable rainfall of this year's monsoon season. The rainfall also ended Phoenix Sky Harbor's 19th-longest dry streak on record. #azwx pic.twitter.com/jRKM8Cglim

— NWS Phoenix (@NWSPhoenix) July 13, 2026

Light, scattered showers popped up later Monday morning before tapering off.

“Another round could develop this afternoon just east and northeast of the metro area up in the foothills, and it’ll drift slowly towards the Phoenix area and towards Casa Grande as well,” Salerno said.

“So, we could see another round of showers and storms, maybe not as robust as yesterday, but still could be dealing with some dusty winds and maybe some blowing dust as well.”

On Sunday night, a wall of dust moved into the Valley from the southeast, prompting a dust storm warning. A temporary ground stoppage was issued for Phoenix Sky Harbor International Airport because of the decreased visibility.

Will monsoon activity continue this week?

Looking ahead, Salerno said the Valley has a 30% or higher chance for daily thunderstorms throughout the week.

Today isn't looking like it'll be as active as yesterday, but still good chance for isolated thunderstorms and more gusty winds for south-central AZ. The overall storm coverage will be lower in the Phoenix Metro with only about 20-30% at most. #azwx pic.twitter.com/3SpIqJNOyg

— NWS Phoenix (@NWSPhoenix) July 13, 2026

“We may actually see improving chances by the end of the week, as well, with them going up to around 50% by around Thursday and Friday. So, even if you don’t see a thunderstorm pass over you today, there’s still plenty of chances over the coming days here.”

The monsoon activity will cool things off, too. Phoenix hasn’t had a daily high temperature below 100 degrees since May 31.

“We will also see temperatures declining all the way down to the mid to low 90s by the end of the week. So, that is also something to enjoy is the cooler weather that we’re going to be feeling just ahead of us,” Salerno said.

KTAR News 92.3 FM’s Colton Krolak contributed to this report.

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