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MOST ACCURATE FORECAST: June starts with a break from the 100s in the Valley!

Cooler air is moving in and dropping Valley highs into the low 90s for the first days of June. (That's putting us several degrees below normal for this time of year.)

By: Amber Sullins

Posted at 7:02 AM, Jun 01, 2023

and last updated 2023-06-01 23:13:51-04

PHOENIX — Today marked the coolest June 1st in Phoenix in 32 years!

We officially hit 92 degrees at Sky Harbor, putting us 8 degrees below normal for this time of year.

A storm system passing through Arizona is bringing the cooler air and will also bring a slight chance of showers and thunderstorms to northern Arizona over the next few days.

Here in the Valley, conditions will stay dry and air quality will get worse heading into the weekend.

An Ozone High Pollution Advisory has been issued for Friday with Ozone High Pollution Watches in effect on Saturday and Sunday.

Ozone pollution will reach unhealthy levels, especially for kids, older adults and anyone with any kind of respiratory condition, like asthma or COPD. If you fall into one of these categories, limit your time outside in the afternoon hours or you may have difficulty breathing.

Temperatures will heat up again over the weekend, too.

Highs in the Valley will be back in the triple digits Saturday, Sunday and Monday.

Then, our next storm system will pick up winds and bring in some slightly cooler air by Tuesday.

We also continue to track a Flood Warning that remains in effect for parts of the Gila River in southwestern Arizona as the flow increases due to water releases from the Painted Rock Dam. This warning remains in effect through June 6th. Do not attempt to cross any flooded roadways.

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2023 Rainfall totals:

Sky Harbor Official Rainfall: 2.88" (-0.04" from average)

Valley Average (Phoenix Rainfall Index): 3.36"

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2022 Rainfall totals:

Sky Harbor Official Rainfall: 5.78" (-1.44" from average)

Valley Average (Phoenix Rainfall Index): 7.02"

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Daily rainfall reports from all across the Valley can be found here.
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PHOENIX IS GETTING DRIER - LOWER RAINFALL AVERAGES NOW

Average Monsoon Rainfall in Phoenix (1981-2010): 2.71" of rain