Phoenix, AZ – Arizona wakes under clear skies this morning, but the crisp desert air hints at a quick cool-down on the way. Calm winds and bright sun will carry through the weekend, yet by Monday morning, temperatures could dip near 40°F — a sharp reminder that December’s chill is here to stay.
According to the National Weather Service in Phoenix, skies remain sunny through early next week with daytime highs climbing from the upper 60s Saturday to mid-70s by Tuesday. However, each sunrise brings a brisk bite, with pre-dawn lows in the mid-40s today dropping closer to the upper 30s to low 40s by Monday. Drivers heading out for early commutes or returns from holiday travel should prepare for frosty windshields and cool desert mornings.
Meteorologists say the air will stay dry, but cooler nights could trigger patchy frost across outlying areas near Glendale, Surprise, and Queen Creek. Calm winds mean no widespread dust concerns, yet sudden temperature swings between afternoon warmth and early morning chill can cause fatigue and slippery road conditions if any moisture refreezes on shaded pavement.
Plan on sweaters for morning errands and light jackets after sunset. The extended pattern shows steady warming midweek — highs near 76°F by Wednesday — before another mild front slides through late next week.
Five-Day Outlook (Phoenix, AZ)
Sunday: Sunny, high 71°F, low 46°F.
Monday: Sunny, high 74°F, low 40°F.
Tuesday: Sunny, high 75°F, low 49°F.
Wednesday: Sunny, high 76°F, low 49°F.
Thursday: Sunny, high 78°F, low 51°F.
