Arizona — The desert wakes up cool and quiet, with stars fading as temperatures hover near 40 degrees. By midmorning, sunlight quickly changes the feel across Tucson, pushing warmth back into the air.
Today starts clear and calm, then turns comfortably warm. Afternoon highs climb into the mid-70s, well above January averages. Winds stay light, keeping travel smooth across city streets and along I-10.
This pattern holds steady through Friday. Clear skies dominate each day, allowing strong daytime heating but noticeable cooling after sunset. Overnight lows drop into the low to mid-40s, especially outside the urban core.
Wednesday and Thursday bring nearly identical conditions. Sunshine remains uninterrupted, and highs reach 74 to 76 degrees. Outdoor plans look excellent, though early mornings feel brisk before the sun takes over.
Drivers heading out before sunrise should expect cool air but dry pavement. No rain, fog, or visibility issues are expected. The biggest impact comes from sharp temperature swings, which can surprise early commuters.
Thursday night stays clear with lows near 42 degrees. By Friday afternoon, temperatures rebound again near 75 degrees under full sun. Winds remain light, offering classic winter desert weather.
The weekend continues the trend. Saturday reaches the mid-70s, with a mostly clear and mild night. Sunday edges slightly warmer, nearing the upper 70s by afternoon. Conditions stay dry across southern Arizona.
Looking ahead to Jan. 19–23, long-range outlooks suggest above-normal temperatures persist across the Southwest. Any meaningful rain chances remain limited for now.
Plan layers for early mornings and lighter clothing by afternoon. Desert winter delivers its daily contrast.
How big was the temperature swing where you live today?
Five-Day Outlook for Tucson, Arizona
• Wednesday: Sunny, high near 74°F
• Thursday: Sunny, high near 76°F
• Friday: Sunny, high near 75°F
• Saturday: Sunny, high near 75°F
• Sunday: Sunny, high near 77°F
