Pack or skip
Flip-flops for Mesa in December
Verdict
Optional
Warm enough to wear in the evening or on the beach; not on a city walking day.
Why
Mesa in December averages highs of 67°F, lows of 45°F, 3 rainy days.
That climate makes flip-flops a judgment call. Warm enough to wear in the evening or on the beach; not on a city walking day.