PHOENIX — Showers and thunderstorms are moving through Arizona overnight.
Watch out for gusty winds, blowing dust, lightning, areas of heavy rain and possible flooding with any of the storms that move through.
Remnant moisture from what was once Tropical Storm Harold is getting caught up in our monsoon flow, enhancing storm chances and picking up winds across Arizona, New Mexico and west Texas.
Here in the Valley, there is a slight chance of spotty showers overnight into Thursday morning.
A few isolated showers or thunderstorms could impact us again Thursday afternoon, but by Friday high pressure will move west cutting off our monsoon flow and cranking up the heat.
Starting Saturday, the 110s are back in Phoenix and they'll be sticking around into the beginning of next week.
We'll also be in record territory. Sunday's record high is 113 degrees, set back in 2020. Monday's record high is also 113 degrees, set back in 2009. We're forecasting highs to be around 113 or 114 degrees on those days.
Phoenix has already had 46 days this summer at 110 degrees or hotter. That's the second most ever recorded. The record is 53 days set in 2020 and we will definitely make a run at that record this year as high heat continues through the end of August.
We could also see more overnight lows in the 90s by early next week. We're now up to 29 days with lows in the 90s, breaking the record of 28 days set in 2020.
As temperatures climb and skies stay mostly sunny, our air quality will get worse, too.
An Ozone High Pollution Advisory is in effect Thursday and Ozone High Pollution Watches are in effect Friday through Sunday. These will likely get upgraded to Advisories as we get closer. Ozone pollution could reach unhealthy levels those days making it difficult to breathe if you have asthma or COPD. So, you may want to limit your time outside if you have any kind of respiratory condition.
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2023 Rainfall totals:
Sky Harbor Official Rainfall: 2.94" (-1.60" from average)
Valley Average (Phoenix Rainfall Index): 3.73"
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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
NEW Average Monsoon Rainfall in Phoenix (1991-2020): 2.43" of rain
Average Yearly Rainfall in Phoenix (1981-2010): 8:03" of rain
NEW Average Yearly Rainfall in Phoenix (1991-2020): 7.22" of rain
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