Last updated: June 24, 2025
In Atlanta, United States during December, the average temperature hovers around 2°C (35°F). However, be prepared for fluctuating conditions — the minimum can drop to a brisk -20°C (-4°F), while the maximum can reach a pleasant 19°C (67°F). Expect about 54 mm (2.1 in) of precipitation spread over 7 days, and brace yourself for an average humidity of 84%, making it feel quite chilly and damp.
In December in Atlanta, the average temperature is 2°C (35°F). Maximum temperatures can reach 19°C (67°F), while the minimum can drop as low as -20°C (-4°F). Be prepared for a wide range of temperatures to ensure a comfortable and enjoyable travel experience.
In Atlanta in December, the precipitation amount is 54 mm (2.1 in) over a duration of 7 days.
In Atlanta in December, humidity is 84%. With an average temperature of 2°C (35°F), this humidity feels like an uncomfortable chill that penetrates your bones, making outdoor travel quite brisk and uninviting.
In Atlanta in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Atlanta, you can visit Hourly UV Index in Atlanta.
UV Risk Categories
Weather in Atlanta varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Atlanta, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 67 mm (2.7 inches) | 82% | moderate |
| February Weather | -1°C (31°F) | 70 mm (2.7 inches) | 83% | moderate |
| March Weather | 6°C (43°F) | 121 mm (4.8 inches) | 84% | high |
| April Weather | 11°C (52°F) | 123 mm (4.8 inches) | 85% | very high |
| May Weather | 18°C (65°F) | 150 mm (5.9 inches) | 79% | very high |
| June Weather | 23°C (74°F) | 123 mm (4.8 inches) | 82% | extreme |
| July Weather | 25°C (77°F) | 114 mm (4.5 inches) | 80% | very high |
| August Weather | 23°C (74°F) | 96 mm (3.8 inches) | 81% | very high |
| September Weather | 21°C (71°F) | 62 mm (2.4 inches) | 80% | very high |
| October Weather | 14°C (57°F) | 115 mm (4.5 inches) | 82% | high |
| November Weather | 5°C (41°F) | 65 mm (2.6 inches) | 88% | moderate |
| December Weather | 2°C (35°F) | 54 mm (2.1 inches) | 84% | low |