“These temperatures are absolutely warmer than normal,” NWS meteorologist Ted Whittock said.
Currently, it’s around 10 degrees hotter outside in Phoenix than the average start to August. Normally, Phoenix will see early August temperatures of around 105 degrees. So far, it’s been well above that.
As of Tuesday, the average temperature this month has been 100.8 degrees, with the average high at a whopping 113 degrees. Temperatures are expected to stay this high going into the weekend, when they’re expected to drop while still remaining above normal, Whittock said.
While the summer of 2025 has been more run-of-the-mill compared to the previous two, August could be the month that kicks it into high gear. Whittock said this August could “absolutely” be a record-breaking month for Phoenix heat, and the NWS Climate Prediction Center says there is a 40% chance that the temperature will be “above normal” throughout the rest of the month. With very low chances of rain or a monsoon, nothing is likely to bring a dramatic temperature decrease.
But this August has some hot competition if it wants to break any records. The last two years provided the second and third-hottest Augusts on record. The only hotter month was August 2020, with an average temperature of 99.1 degrees. There was a lot of sweating under those masks, if you were foolhardy enough to go outside.
Here’s what August 2025 has to shoot for.
A very hot week is ahead as temps climb to around 10 degrees above normal for this time of year with record-breaking temps likely. Extreme Heat Warnings are in effect through most of the week with Wed and Thu being the hottest days. Stay cool and hydrated this week! #azwx #cawx pic.twitter.com/MZ7PmFaRbF
— NWS Phoenix (@NWSPhoenix) August 4, 2025
Hottest Augusts in Phoenix history
If this month's temperatures stay on track, it could become the hottest August on record. If that surprises you, it’s possible you’ve been experiencing “recency bias,” Whittock said. Due to the last two years being so hot, it’s easy to compare this year to “the last few recent years in memory” to downplay temperatures.It’s still “usually hot” this year, Whittock said, adding that “this is dangerous heat for almost the entire population if proper precautions are not taken.”
Here are the hottest Augusts in Phoenix history.
1. August 2020 – 99.1 degrees
2. August 2023 – 98.8 degrees
3. August 2024 – 98.7 degrees
4. August 2011 – 98.3 degrees
5. August 2019 – 96.8 degrees
6. August 2015 – 96.6 degrees
7. August 2007 – 96.2 degrees
8. August 1981 – 95.8 degrees
9. August 2012 – 95.3 degrees
Tie-10. August 1994 – 95.2 degrees
Tie-10. August 2009 – 95.2 degrees
Coolest Augusts in Phoenix history
This list is just here to piss you off. Phoenix hasn’t had an August as cool as these since humans landed on the moon for the first time.1. August 1956 – 85.7 degrees
2. August 1964 – 86.1 degrees
3. August 1968 – 86.5 degrees
4. August 1955 – 86.6 degrees
Tie-5. August 1941 – 87.1 degrees
Tie-5.August 1963 – 87.1 degrees
7. August 1925 – 87.2 degrees
8. August 1951 – 87.8 degrees
9. August 1927 – 87.9 degrees
10. August 1957 – 88 degrees
