Pack or skip
Packable down jacket for Jacksonville in January
Verdict
Pack it
Lows around 43°F — the packable puffer covers 90% of layering needs.
Why
Jacksonville in January averages highs of 65°F, lows of 43°F, 9 rainy days.
That climate means a packable down jacket earns its space in the bag. Lows around 43°F — the packable puffer covers 90% of layering needs.