Will I be hot?
Will I be hot in Atlanta in January?
Verdict
No — No, comfortable.
Highs cap at 52°F — no heat-management gear needed.
Day vs. night
Day
52°F
Cool
Sweater weather with the option to add a light shell.
Night
33°F
Cold
Cold enough that a hat and gloves become mandatory.
Why
Atlanta in January averages highs of 52°F, lows of 33°F, 11 rainy days.
Temperature is comfortable across the day; pack for style and weather resistance, not heat management.