Pack or skip
Packable down jacket for Tucson in September
Verdict
Skip it
Lows around 68°F — you'll never reach for it.
Why
Tucson in September averages highs of 92°F, lows of 68°F, 7 rainy days.
That climate means a packable down jacket isn't pulling its weight. Lows around 68°F — you'll never reach for it.