Tucson, AZ Weather: 80° Heat Fades as Cooler Pattern Builds into Early December

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Arizona – The early desert light rolls across the Catalina Mountains, painting the skyline in soft orange and rose as Tucson wakes to another clear, mild morning. Air feels crisp but gentle — the kind that reminds locals how quickly fall can fade into winter in the desert.

According to the National Weather Service, warm and dry weather dominates through Sunday, perfect for outdoor plans and post-holiday travel. Highs reach the upper 70s Friday and settle into the mid-70s for Saturday and Sunday. Light winds and clear skies make for calm afternoons, but as the sun dips, temperatures fall sharply into the mid-40s.

NOAA’s 6–10 Day Outlook signals a pattern change by early December, with colder air pushing south from the Rockies. While Tucson will stay dry, highs may slide back into the 60s next week — a clear sign of a December cooldown sweeping across much of the nation.

Residents should expect a return to chilly desert mornings and possible frost pockets by midweek, especially in lower valleys and rural areas east of I-10. Those heading north toward Flagstaff or the Mogollon Rim late next week could encounter early-season snow as the colder pattern deepens.

Five-Day Outlook for Tucson, AZ

  • Friday: Sunny, high 78°F, low 46°F.
  • Saturday: Sunny, high 74°F, low 46°F.
  • Sunday: Mostly clear, high 75°F, low 45°F.
  • Monday: Sunny, high 69°F, low 42°F.
  • Tuesday: Sunny, high 70°F, low 44°F.