Atlanta, Georgia weather in December

Averages from 2021–2025 (155 days of record).

Average high: 57°F
Average low: 40°F
Rainy days: ~10 per month
Total precipitation: 4.2 in
Warmest recorded: 74°F
Coldest recorded: 8°F

Expect December days in Atlanta, Georgia to top out around 57°F and cool to about 40°F overnight, with roughly 10 days of measurable rain across the month. In recent years December has ranged from 8°F to 74°F.

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Current Atlanta, Georgia forecast → · Historical data by Open-Meteo (ERA5).