Pack or skip
Packable down jacket for Philadelphia in March
Verdict
Pack it
Lows around 35°F — the packable puffer covers 90% of layering needs.
Why
Philadelphia in March averages highs of 54°F, lows of 35°F, 11 rainy days.
That climate means a packable down jacket earns its space in the bag. Lows around 35°F — the packable puffer covers 90% of layering needs.