Will I be hot?
Will I be hot in New York in December?
Verdict
No — No, comfortable.
Highs cap at 43°F — no heat-management gear needed.
Day vs. night
Day
43°F
Cold
Direct sun feels cool at best; shade is jacket weather.
Night
31°F
Freezing
Deep freeze after sunset — every exposed step counts.
Why
New York in December averages highs of 43°F, lows of 31°F, 11 rainy days.
Temperature is comfortable across the day; pack for style and weather resistance, not heat management.