Last 100s of the year?

PHOENIX — This unprecedented, record-shattering heat wave is almost over!

Phoenix Sky Harbor just marked 21 straight days of record-setting heat, but relief is now in sight.

Low pressure is moving through our state bringing cooler air and chances for showers and thunderstorms to parts of northern Arizona.

Here in the Valley, we’ll finally put an end to these sizzling triple digits as that cooler air pushes in.

Temperatures will drop into the mid 90s starting tomorrow before an even bigger drop this weekend.

Our first big fall storm system will move in from the northwest late Thursday and Friday. As it arrives, we’re tracking widespread rain chances across Arizona and maybe even some snow Friday night into Saturday morning for areas above 6,500 feet in elevation.

There’s a chance for scattered showers in the Phoenix area as early as Friday morning, with spotty showers possible into Saturday, too.

Breezes will pick up Thursday and Friday ahead of the storm and temperatures will drop dramatically by Saturday as the cold air settles in behind it.

Phoenix could drop into the 70s on Saturday with early morning lows across the Valley in the 50s by Sunday morning.

This is the relief we’ve been waiting for since May! Now, it looks like we may finally be done with the triple digit heat for the year.

Phoenix marked 142 days this year with highs at 100 degrees or hotter. That’s the third most on record.

On average, our last triple-digit day is October 5th, but we’ve seen highs in the 100s as late as October 27th back in 2016.

This record-breaking year has also brought the latest 110-degree day ever to Phoenix on October 7th this year. The previous record latest was September 19th in 2010.

Phoenix has had 70 days with highs at or above 110 degrees this year, which is also an all-time record. The previous record was set just last year at 55 days.

With La Niña building in the Pacific Ocean, it’s likely that we’ll continue to see warmer and drier-than-normal conditions overall through the fall and winter months.

Our drought has been getting worse lately with the hot and dry monsoon season we just had.

Phoenix only picked up 0.74 inches of rain this monsoon, which ties for the seventh driest monsoon on record. Our 30-year average (which is considered our normal amount of rain) is 2.43 inches. But, it’s important to remember, that is a decrease from the previous 30-year average of 2.71 inches (from 1981-2010) as our Valley climate continues to get hotter and drier.

With an overall average temperature of 98.3 degrees, Monsoon 2024 was also the hottest monsoon ever recorded in Phoenix. That breaks the previous record of 96.9 degrees which we just set last year. All of the top 25 hottest monsoon seasons have occurred in the last 25 years.

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2024 Sky Harbor Official Rainfall to date: 4.54″ (-1.05″ 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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See the full 7-Day forecast

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