Pack or skip
Packable down jacket for Milwaukee in December
Verdict
Pack it
Lows around 19°F — the packable puffer covers 90% of layering needs.
Why
Milwaukee in December averages highs of 32°F, lows of 19°F, 11 rainy days.
That climate means a packable down jacket earns its space in the bag. Lows around 19°F — the packable puffer covers 90% of layering needs.