MOST ACCURATE FORECAST: Big cool-down & spotty showers overnight

Posted at 5:11 AM, Oct 25, 2021
and last updated 2021-10-26 00:25:00-04

PHOENIX — Showers and isolated thunderstorms are moving through northern Arizona as a storm system moves through overnight.

The best rain chances will be north of I-40 with snow possible above 7,500 feet in elevation.

Here in the Valley, there's a slight chance for a few spotty showers before sunrise, then skies will quickly clear out Tuesday morning.

The cold front associated with that storm system will move across Arizona dropping temperatures by nearly 15 degrees.

Here in Phoenix, we'll drop to 76 degrees on Tuesday afternoon, putting us 10 degrees below normal for this time of year.

As high pressure builds in again, temperatures will climb for the rest of the week. Highs in the Valley will hit the upper 80s Thursday and Friday.


2021 Rainfall totals:

Sky Harbor Official Rainfall: 5.58" (-0.23" from average)

Valley Average (Phoenix Rainfall Index): 7.16"

Daily rainfall reports from all across the Valley can be found here.


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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