Atlanta weather in December
December in Atlanta: cool, rainy, with clean air — a good time to visit.
#10 of 12 months in Atlanta · #342 of 604 destinations to visit in December · comfort 67/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Atlanta climate normals — December
| Daytime high | 13°C / 56°F | 🙂 cool |
|---|---|---|
| Nighttime low | 5°C / 41°F | |
| Feels like (high) | 11°C / 52°F | |
| Rainfall | 118 mm / 4.7 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 3°C / 37°F | |
| Sunshine | 6 h/day | |
| Daylight | 10 h | |
| Wind | 17 km/h / 11 mph | |
| Snowfall | 0.1 cm / 0 in | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Atlanta in December — FAQ
- Is December a good time to visit Atlanta?
- December in Atlanta: cool, rainy, with clean air — a good time to visit. It ranks #10 of 12 months for Atlanta on SeasonMap's comfort score (67/100).
- What is the weather like in Atlanta in December?
- In December, Atlanta averages a daily high of 13.4°C and a low of 4.8°C, with about 118.3 mm of rain over roughly 10.2 rainy days.
- What is the air quality in Atlanta in December?
- Atlanta has a mean US Air Quality Index of about 47 in December.