Pack or skip
Sun hat for Mesa in September
Verdict
Pack it
Midday temps around 100°F — a brim beats reapplying sunscreen every hour.
Why
Mesa in September averages highs of 100°F, lows of 76°F, 3 rainy days.
That climate means a sun hat earns its space in the bag. Midday temps around 100°F — a brim beats reapplying sunscreen every hour.