PHOENIX — Phoenix experienced another record-setting rainfall event on Sunday, with 1.96 inches recorded at Sky Harbor International Airport. This now places the city in the No. 4 spot for wettest Octobers on record.
So far this month, Phoenix has recorded 3.02 inches of rain, surpassing the October average of 0.56 inches, and more rain is expected on Monday.
Moisture from Raymond is keeping the atmosphere well-saturated and capable of producing additional showers and storms. Through the evening, the jet stream is oriented across southern Arizona from east to west, keeping most storms to the south. However, this pattern will shift overnight.
From late Sunday into Monday, the jet stream will reposition into a southwest-to-northeast orientation, allowing moisture to push farther north. This will bring storms back into the Valley, eastern Arizona, and the High Country.
Scattered storms are expected overnight, with more widespread rain developing across the Valley through Monday morning and into the early afternoon.
Rainfall totals will vary across the region, but about 50% to 70% of the Valley could see between 0.25 and 0.50 inches of rain, while roughly 40% of the area could pick up around 1 inch. Farther east, in higher elevations near Payson and Globe, rainfall totals could reach 2 to 3 inches.
As Arizona braces for several days of rain, flooding, and storms, ABC15 Weather Action Days remain in effect through Monday.
Now is the time to ensure you and your family are prepared for the potential impacts these storms may bring. Allow extra travel time, avoid flooded roads, and have an evacuation plan in case flooding threatens your neighborhood.
A Flood Watch remains in effect through Monday evening for the Valley and southwestern Arizona.
Flash flooding will be a major concern, with dry washes turning into flowing streams and water pooling in low-lying areas.
Thunderstorms will also be possible at times, bringing strong winds, lightning, small hail, and brief heavy downpours.
Conditions are expected to dry out by Tuesday, with a milder weather pattern taking hold.
This wetter pattern provides a welcome break from the heat. Highs are forecast to stay in the 80s through the week, with cooler morning lows dipping into the upper 50s and low 60s.
2025 Sky Harbor Official Rainfall to date: 5.57" (1.68" from average)
Monsoon 2025 Sky Harbor Official Rainfall: 2.76" (+0.33" 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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