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MOST ACCURATE FORECAST: Excessive Heat Warnings Tuesday and Wednesday

and last updated 2021-08-02 19:54:51-04

High pressure is bringing the heat this week!

Excessive Heat Warnings are in effect for the Phoenix metro area (as well as spots south and west of here) on Tuesday and Wednesday. So, those days will be ABC15 Weather Action Days.

Heat is the number one weather-related killer. Take action to protect yourselves from the heat this week and stay safe. Limit your time outside during the day and make sure you are drinking plenty of water.

Valley highs will be back up above 110 degrees on Tuesday and Wednesday and lows will only drop into the upper 80s overnight.

Air quality continues to be a big issue, too. An Ozone High Pollution Advisory is in effect through Tuesday and Ozone High Pollution Watches have been issued for Wednesday, Thursday and Friday. Those could be upgraded to Advisories too as we get closer.

If you have any respiratory conditions, like asthma or COPD, you may want to limit your time outside or you could have difficulty breathing.
Work from home, carpool or take public transportation to help prevent the problem from getting worse and don't use gas-powered lawn mowers or leaf blowers.

We won't see any storms here in the Valley through the middle of the week, but we could see more monsoon action in the higher terrain of eastern Arizona.

By Friday, our ridge of high pressure will shift east allowing monsoon moisture to return. Then, a disturbance tracking through from Mexico could serve as a trigger to get more storms going through the weekend and early next week.

Temperatures will drop as storm chances return. Expect highs back in the upper 90s across the Valley by the end of the weekend.



With the latest climate averages from 1991 to 2020, the number of 110-degree days each year has increased.

Phoenix now averages 21 days a year at 110 degrees or more. That's up from the previous 30-year average of 19 days a year and from the all-time average of 12 days a year.



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



99 percent of Arizona is in drought.

9 percent of Arizona is in "Exceptional Drought" (the worst kind), which is an improvement due to our recent monsoon rainfall.


2021 Rainfall totals:

Sky Harbor Official Rainfall: 2.96" (-0.92" from average)

Valley Average (Phoenix Rainfall Index): 3.89"

Daily rainfall reports from all across the Valley can be found here.

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