MOST ACCURATE FORECAST: New Year's Eve storm bringing rain and snow to Arizona

Posted at 4:40 AM, Dec 30, 2021

PHOENIX — It's going to be a wet New Year's Eve across Arizona!

Our next big winter storm is moving in and we're switching into Weather Action mode on Friday because it may impact your holiday plans.

We're tracking the potential of a quarter to a half an inch of rain across the Phoenix metro area and even the chance of a few thunderstorms in the mix Friday afternoon.

The rain will start to clear out in the overnight hours Friday into Saturday morning, but there is a chance we could see some lingering showers at midnight as we ring in the new year.

Winter Storm Watches, Winter Weather Advisories, and Winter Storm Warnings are in effect for northern Arizona along with the higher terrain of southeast Arizona.

Snow levels will start out around 6,000 feet, but they'll drop to 4,000 feet by late Friday night.

Flagstaff could pick up four to eight inches of snow with two to six inches in the forecast for Show Low, Heber and Williams.

We'll see a wintry mix of rain, sleet and snow in places like Prescott, Sedona and Payson with less than an inch of snowfall accumulating.

This winter storm will exit to the east on New Year's Day leaving behind some of the coldest air of the season.

Freeze Watches are in effect across the Phoenix metro area for Sunday morning as lows drop into the 30s.

Up north, lows will be in the single digits in our highest terrain spots like Flagstaff over the weekend.

Temperatures will rebound heading into next week as our forecast stays dry.

Look for highs in the Valley back in the low to mid 60s through the middle of next week with overnight lows in the 40s.


2021 Rainfall totals:

Sky Harbor Official Rainfall: 7.10" (-0.09" from average)

Valley Average (Phoenix Rainfall Index): 9.04"

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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