Phoenix Sky Harbor: Tied 10th driest July on record

- Posted in Weather Records by
Monsoon 2025 has not been very active across most of the Valley of the Sun, and Phoenix Sky Harbor rainfall totals reflect that, with only 0.16" of rainfall being measured. This tied as the 10th [...] Read more

Monsoon takes a break in Arizona

- Posted in Monsoon by
Hello, dry air! The monsoon ridge has shifted well east into the Plains as an area of low pressure sits just off the West Coast. This brings a dry southwest flow into the region, which will [...] Read more

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