Will I be hot?
Will I be hot in Tucson in January?
Verdict
No — No, comfortable.
Highs cap at 63°F — no heat-management gear needed.
Day vs. night
Day
63°F
Comfortable
A T-shirt and a light overshirt is enough.
Night
38°F
Cold
Cold enough that a hat and gloves become mandatory.
Why
Tucson in January averages highs of 63°F, lows of 38°F, 5 rainy days.
Temperature is comfortable across the day; pack for style and weather resistance, not heat management.
The day-to-night temperature swing is 25°F, which is the real story here — the average number hides how different midday and midnight feel.
Nearby months
Packing pointers
Best shoes
Breathable shoes & sandals for Tucson in January →