Arizona starts this Monday under calm, partly cloudy skies, but the weather pattern is already shifting. Subtle changes today give way to a more active and colder setup by midweek, with impacts that could linger into the weekend.
Temperatures across southern Arizona remain near normal through Tuesday. Tucson warms into the mid-60s, while Sierra Vista holds in the lower 60s. It feels comfortable for now, with dry pavement and light breezes. That calm won’t last.
By Wednesday into Thursday, meteorologists are tracking a developing system that brings 30–60% chances for valley rain and mountain snow above 7,000 feet. Cloud cover increases, daytime highs ease downward, and roads in higher terrain may turn slick. Travelers heading toward mountain passes should prepare for changing conditions, especially during evening hours.
The bigger concern arrives Friday morning. Cooler air settles in behind the system, sending temperatures near freezing to freezing, especially east of Tucson. Early commuters may encounter frost on windshields and cold-soaked pavement. While widespread ice is not guaranteed, even brief freezing temperatures can impact morning travel and outdoor plans.
Tucson’s highs slide from the upper 60s midweek to near 60 degrees by Friday, with overnight lows dipping into the mid-30s. Sierra Vista cools faster, with lows hovering close to freezing by the end of the workweek. Pets, plants, and exposed pipes may need protection for the first time in 2026.
What to do now:
Plan extra time for midweek travel, especially near higher elevations. Keep a jacket handy for colder mornings later this week. Watch for updated Weather Alerts as temperatures trend downward.
Five-Day Outlook (Tucson Area):
- Monday: Partly cloudy, mid-60s
- Tuesday: Partly cloudy, upper 60s
- Wednesday: Chance of rain, cooler
- Thursday: Rain chances continue, highs near 60
- Friday: Clearing, colder, near-freezing morning lows
