July 20th: Coolest high temp in Phoenix on days without precip

- Posted in Weather Facts by
Phoenix had another "cool" July day, as leftover clouds from a large thunderstorm complex down in Mexico moved over the Valley. The high today (July 20th) at Phoenix Sky Harbor was 97º, which [...] Read more

Phoenix: 5th coolest July 16th on record

- Posted in Weather Records by
Thanks to plenty of cloud cover and an increase in moisture, the high temperature at Phoenix Sky Harbor came in at just 97º today (July 16th). This is the 5th coolest high temperature recorded on [...] Read more

Monsoon 101

- Posted in Monsoon by
Monsoon is the time of year many of us look forward to as active weather moves into the forecast! So what exactly is the “monsoon?" Below is a post we put together many years ago, to help people [...] Read more

Notice: Site maintenance completed

- Posted in Website by
We are pleased to report that the server upgrade/maintenance is now complete! All data should be flowing as usual. If you notice anything that is not working, please contact us by clicking HERE. [...] Read more

Dew Point Rule: Monsoon 2025 starts!

- Posted in Monsoon by
Officially, Monsoon 2025 started on June 15th; however, before 2008, the monsoon did not begin in Phoenix until the daily average dew point was 55°F or higher for three consecutive days. This was [...] Read more

Dust blankets the Phoenix Valley to start July

- Posted in Monsoon by
Monsoon 2025 is starting to get more active! High pressure near the Four Corners has allowed moisture to move into the region, especially across Eastern Arizona and New Mexico. As a result, we have [...] Read more

June 19th: Extreme heat across the Valley of the Sun

- Posted in Weather Facts by
Phoenix Sky Harbor hit 117º on June 19th, which was just 1º shy of the record for the day set back in 2016. Since 1896, this is only the 43rd time that the high in Phoenix has hit or exceeded [...] Read more

Tucson: Hottest day since 2021

- Posted in Weather Facts by
The mercury climbed to a scorching 113º in Tucson on Thursday (June 19th). This is only the 25th time Tucson has reached or exceeded 113º, with records going back to 1895. This is also the hottest [...] Read more

Arizona Drought Update: June 19, 2025

- Posted in Drought by
We are in the heart of what is known as the driest time of the year for Arizona, so drought conditions rarely improve. With that said, while we haven't seen an improvement in the past week, we have [...] Read more

Monsoon 2025 has officially started

- Posted in Monsoon by
Even though a big uptick in moisture and widespread thunderstorm activity is likely still a couple of weeks away, Monsoon 2025 started today (June 15th). In 2008. The National Weather Service [...] Read more
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