Arizona wakes up under clear, golden skies this Sunday morning — calm now, but changes are quietly on the horizon. A streak of warm, dry days will hold through Tuesday before a Pacific disturbance sweeps toward southern Arizona, bringing a late-week rain chance that could affect early December travel.
According to the National Weather Service in Tucson, temperatures will stay unusually mild through Tuesday with highs near 72°F and crisp, 40-degree mornings. But by Wednesday night, clouds will thicken and a 30% chance of showers will develop, possibly accompanied by a few isolated thunderstorms. While totals should stay light, slick roadways and brief visibility drops are possible during the evening commute.
Travelers heading out midweek should plan for slower driving on wet pavement, especially on I-10 and I-19. Windshield glare from passing showers could reduce visibility during early night hours. “It’s a brief system,” meteorologists said, “but it could mark the start of a cooler, wetter pattern heading into early December.”
Behind the midweek system, a subtle cooldown will follow — highs dipping to the mid-60s by Friday before climbing again next weekend. It’s a fitting transition as the desert eases from late fall warmth toward its early-winter rhythm.
Residents decorating for the holidays should take advantage of Monday and Tuesday’s calm weather for outdoor tasks before the rain risk returns midweek. Keep umbrellas handy and check for updated advisories as December travel ramps up across the region.
Five-Day Outlook (Tucson, AZ):
- Monday: Sunny, high 70°F, low 43°F.
- Tuesday: Sunny, high 72°F, low 45°F.
- Wednesday: Mostly sunny, high 72°F, 30% chance of showers late.
- Thursday: 40% chance of rain, partly sunny, high 65°F.
- Friday: Sunny, cooler, high 64°F.
