Pack or skip
Winter coat for San Jose in January
Verdict
Optional
Lows around 41°F — a packable puffer covers the cold mornings.
Why
San Jose in January averages highs of 58°F, lows of 41°F, 8 rainy days.
That climate makes a winter coat a judgment call. Lows around 41°F — a packable puffer covers the cold mornings.