December in Atlanta averages a daily high of 13.7°C with nights around 2.4°C. Expect roughly 10.5 wet days totalling 110.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Atlanta is March–May.
Based on ATLANTA FULTON CO AIRPORT, GA US (13km), 1995–2024. 27 years of December data.