PHOENIX – Our unprecedented 21 straight days of record-breaking heat are finally over!

Temperatures in the valley fell into the high 90s mid-week and will drop even further in the coming days as our first major fall storm system arrives.

We expect widespread rainfall across Arizona on Friday and possibly even some snow in areas above 6,500 feet elevation Friday night into Saturday morning. Flagstaff could gain about an inch with higher snowfall amounts over the San Francisco Peaks.

There is also a chance of isolated showers and thunderstorms in the Phoenix area Friday morning, with a few more isolated showers possible Saturday.

Right now, it looks like parts of the valley could receive about a tenth of an inch of rain from this storm. The bulk of this will be between 5 and 10 a.m. on Friday morning.

Thursday and Friday will continue to be breezy and breezy, and temperatures will drop dramatically through Saturday as cold air settles behind the storm.

Phoenix could fall into the 70s on Saturday, with early morning lows falling into the 50s across the valley on Saturday and Sunday morning.

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

Phoenix has had 142 days this year with high temperatures of 100 degrees or more. This is the third highest number since records began.

On average, our last triple-digit day is October 5th, but we haven't seen highs in the 100s until October 27th in 2016.

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

Phoenix has had 70 days this year with high temperatures of 110 degrees or more, also an all-time record. The previous record was only set last year at 55 days.

As La Niña forms in the Pacific Ocean, it is likely that we will continue to experience warmer and drier than normal conditions overall throughout the fall and winter months.

Our drought has recently been made worse by the hot and dry monsoon season we just had.

Phoenix recorded just 0.74 inches of rain this monsoon, making it the seventh driest monsoon on record. Our 30-year average (which is considered our normal rainfall amount) is 2.43 inches. However, it is important to remember that this represents a decrease from the previous 30-year average of 2.71 inches (from 1981 to 2010) as the climate in our valley continues to become hotter and drier.

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

_________________________________________

Sky Harbor Official Rainfall So Far in 2024: 4.54 inches (-1.13 inches from average)

Monsoon 2024 Sky Harbor Official Rainfall: 0.74″ (-1.69″ from average)

______________________________________________

Daily rainfall reports from across the valley are available Here.

______________________________________________

PHOENIX IS GOING DRYER – LOWER PRECIPITATION AVERAGES NOW

Average monsoon rainfall in Phoenix (1981–2010): 2.71 inches of rain

NEW Phoenix average monsoon precipitation (1991-2020): 2.43 inches of rain

Average annual precipitation in Phoenix (1981–2010): 8:03 inches of rain

NEW Phoenix Average Annual Rainfall (1991-2020): 7.22 inches of rain

______________________________________________

Share your weather photos and videos with us at any time.

e-mail [email protected].

______________________________________

View the full 7-day forecast

Arizona Interactive Radar