Pack or skip
Sunscreen for Tucson in October
Verdict
Pack it
Sun still finds you at 82°F — UV doesn't care about temperature.
Why
Tucson in October averages highs of 82°F, lows of 57°F, 4 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 82°F — UV doesn't care about temperature.