Phoenix can expect big weather shift this week after cool start

PHOENIX – The week is expected to start with below-normal temperatures and possible storms and end with triple-digit highs, according to the latest Phoenix forecast.

“Enjoy the cooler weather while it lasts. It is May, so typically in May we start to see these hotter temperatures that we’re going to be seeing this coming weekend,” Matt Salerno, a meteorologist with the National Weather Service in Phoenix, told KTAR News 92.3 FM on Monday morning.

Monday’s Valley forecast calls for highs in the middle 80s with cloud cover throughout the day and possible storms overnight.

“Our [rain] chances overnight are going to be about 20 to 30% for the Valley. And then as you go further north and east, we’re looking at more like the 40 to 50% range,” Salerno said.

Dry air will move in behind the system and cool things off Tuesday well below the normal high of about 90 degrees for the first week of May.

“We’ll actually be seeing temperatures falling down more into the middle to upper 70s for most places in the deserts, and then even some in the high terrain could see the 50s and 60s,” Salerno said.

Phoenix forecast calls for warming trend later in week

Tuesday could be the last time the Valley sees highs in the 70s for a while. The temperature is expected to reach the mid-80s on Wednesday and mid-90s on Thursday.

The warming trend will continue on Friday, which is expected to be Phoenix’s first 100-degree day since March 27.

“Heading into the beginning of next week, it looks like we will see those temperatures in that 100-to-105-degree range,” Salerno said.

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Phoenix went through April without reaching 100 degrees after a historically hot March with nine triple-digit days.

In fact, the average Phoenix temperature was higher in March than in April for just the third time on record, according to the National Weather Service.

KTAR News 92.3 FM’s Kellen Shover contributed to this report.

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