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MOST ACCURATE FORECAST: December warmth continues this weekend, cooler air next week

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PHOENIX — December has kicked off warmly with daily highs around 10 degrees above average. This nice weather will continue throughout Arizona over the weekend!

However, a cool-off is on the way, with chilly nighttime lows. Although temperatures will gradually drop, our forecast stays mostly sunny and dry.

Tonight expect Valley lows in the mid to upper 40s. On Sunday afternoon highs will again be above normal in the low to mid 70s.

Early next week, another storm system will pass to our north, dropping temperatures more significantly across the state and creating breezy to windy conditions.

Here in the Valley daytime highs will fall into the upper 60s by Tuesday. Meanwhile, mornings will become quite chilly with some areas here in the Valley approaching the freezing mark by Wednesday morning.

Then, high pressure returns bringing the 70s back toward the middle to the end of next week.

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2024 Sky Harbor Official Rainfall to date: 4.54" (-2.10" from average)

Monsoon 2024 Sky Harbor Official Rainfall: 0.74" (-1.69" 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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