MOST ACCURATE FORECAST: Warm start to Christmas week in the Valley!

Posted at 4:42 AM, Dec 20, 2021

PHOENIX — It's a relatively warm start to the week in the Valley!

With high pressure in control, highs reached the low 70s Monday afternoon and we'll stay in the 70s through the middle of the week.

Clouds will move in from the west overnight, but our forecast will stay dry throughout the day on Tuesday and Wednesday.

Then, several storm systems will be moving through the western U.S. later this week, over the weekend and early next week.

We could see a few rain showers in the Valley starting Thursday with chance for snow in the forecast up north.

Those rain and snow chances will stick around through Christmas Eve and Christmas Day.

Stay tuned to ABC15 for further updates as we get closer!

In the meantime, we are tracking cooler temperatures just in time for Christmas, too.

Valley highs will drop into the 60s starting Friday and we'll stay there through Christmas weekend.


2021 Rainfall totals:

Sky Harbor Official Rainfall: 5.96" (-0.99" from average)

Valley Average (Phoenix Rainfall Index): 7.49"

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

Share your weather photos and videos with us anytime.

See the full 7-Day forecast

Interactive Arizona Radar