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MOST ACCURATE FORECAST: Record warmth to start December

Posted at 4:37 AM, Dec 01, 2021

PHOENIX — It's a record warm start to December in the Valley!

Phoenix hit 85 degrees on Wednesday, breaking the old record of 83 set in 1949.

It's also tied the 3rd warmest temperature ever recorded in the month of December here in Phoenix. The warmest was 87 degrees on December 10, 1950.

With high pressure in control, the 80s will stick around for the rest of the week.

Thursday's record high is 84 degrees set in 2017. Right now, the forecast calls for a high of 83, so it will be close.

And we'll be within a degree of Friday's record high, too. That daily record is 81 degrees set in 1940.

We'll drop into the upper 70s over the weekend, but we could hit 80 again next Monday.

Mornings will stay cool at least, with overnight lows in the 50s.

Next week, we're tracking a storm system moving into the Pacific Northwest that could swing down toward Arizona by Tuesday.

Temperatures will drop and we could see a few showers across northern Arizona on Tuesday. Stay tuned for updates as we get closer.

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2021 Rainfall totals:

Sky Harbor Official Rainfall: 5.58" (-0.92" from average)

Valley Average (Phoenix Rainfall Index): 7.16"
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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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