Triple Digits in the Forecast, But Not in North Phoenix

Every year around this time there’s chatter on the TV news, in the papers and on social media about when the Valley of the Sun will first hit 100 degrees. As of today, the National Weather Service predicts it could happen Sunday. But Accuweather begs to differ. And either way, it almost surely won’t happen in most of North Phoenix, where proximity to the mountains moderates the heat.

While Sky Harbor Airport — the official site of record in Phoenix for the NWS — flirts with the century mark this weekend, Deer Valley Airport is expected to be 2-3 degrees cooler. Farther north in Anthem, temps will be 5 to 7 degrees cooler than central Phoenix. That’s a typical spread, according to the state climatologist.

If Sky Harbor does not hit 100°, Accuweather can claim a small victory. Its forecast calls for a high of 99° Sunday. The Weather Underground’s forecast for both airports is similar to that of the NWS. The big winner could be allergy sufferers. Triple digits dampen the blooms that flood the air with allergens. [See Allergy Tips]

Triple Digit Facts (for Sky Harbor)

  • Average occurrence of 100°: April 29
  • Earliest occurrence of 100°: March 12, 1916
  • Latest occurrence of 100°: June 13, 1971

SOURCE: NWS

North Phoenix Climate
Average Rainfall & Temperature Data
Robert Roy Britt
NoPho resident Robert Roy Britt has written for In&Out publications since its inception in 2005. Britt began his journalism career in New Jersey newspapers in the early 1990s. He later became a science writer and was editor-in-chief of the online media sites Space.com and Live Science. He has written four novels. Email the author.
Robert Roy Britt on Email

Robert Roy Britt

NoPho resident Robert Roy Britt has written for In&Out publications since its inception in 2005. Britt began his journalism career in New Jersey newspapers in the early 1990s. He later became a science writer and was editor-in-chief of the online media sites Space.com and Live Science. He has written four novels. Email the author.

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