PHOENIX — Moisture is building into the Valley and will continue to do so overnight. This moisture, coupled with energy from the jet stream, will help fuel a chance for storms Tuesday morning.
Model data indicated that rain will ramp up especially just before dawn and continue to push showers through the Valley through the mid-morning.
Gusty winds and isolated flash flooding are the main threats, especially late tonight into early Tuesday.
Shower chances will drop into the afternoon as surface level moisture is expected to begin to dip. However, an isolated shower is possible.
Temperatures will stay several degrees below normal, with highs in the low 100s to start the week.
By Wednesday, drier air moves in, shutting down storm chances and setting the stage for a rapid warm-up.
As moisture fades, the heat cranks up!
Phoenix could be flirting with 110° again by the end of the weekend.
2025 Sky Harbor Official Rainfall to date: 1.63" (-1.85" from average)
Monsoon 2025 Sky Harbor Official Rainfall: 0.16" (-0.40" from average)
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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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