January Weather in Atlanta, United States

Last updated: June 24, 2025

In January, the average temperature in Atlanta, United States hovers around -7°C (20°F). Expect a chilly range where the minimum can plunge to -28°C (-18°F) and the maximum can reach a mild 12°C (53°F). While you enjoy the crisp air, be prepared for precipitation totaling 49 mm (1.9 in) over approximately 10 days, coupled with a high average humidity of 92%.

January Temperature in Atlanta

In January in Atlanta, the average temperature is -7°C (20°F). Maximum temperatures can reach 12°C (53°F), while minimums can drop as low as -28°C (-18°F). Be prepared for a wide range of temperatures when traveling to Atlanta during this time.

January Weather in Atlanta: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Atlanta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Atlanta, January typically has an average temperature of -7°C (20°F), with highs reaching up to 12°C (53°F) and lows dropping to around -28°C (-18°F).

Data source: Temperature data for Atlanta generated using information from the Copernicus Climate Change Service.

January Precipitation in Atlanta

In Atlanta in January, the total precipitation amount is 49 mm (1.9 in) over the course of 10 days.

January Precipitation Trends in Atlanta

The chart displays monthly precipitation patterns in Atlanta, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Atlanta, January typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Atlanta

In Atlanta in January, humidity is 92%. With an average temperature of -7°C (20°F), this humidity feels like a heavy, icy blanket wrapping around you, making travel uncomfortable as the cold air seems to cling to your skin and create a chilling dampness that seeps into your clothes, leaving you feeling both cold and clammy.

January Average Humidity in Atlanta

This chart illustrates the average monthly humidity levels in Atlanta, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Atlanta is approximately 92%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Atlanta

In Atlanta in January, 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.

Maximum UV Index Levels in Atlanta for January

The chart shows the monthly maximum UV Index (UVI) for Atlanta in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Atlanta typically reaches 2, which falls under the low exposure category.

Data source: Atlanta January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Atlanta Compares to Other Months

Weather in Atlanta varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Atlanta, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Atlanta, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	49 mm (1.9 inches)	92%	low
February Weather	-6°C (21°F)	55 mm (2.1 inches)	91%	moderate
March Weather	-1°C (30°F)	55 mm (2.2 inches)	87%	moderate
April Weather	5°C (41°F)	94 mm (3.7 inches)	85%	high
May Weather	13°C (55°F)	101 mm (4.0 inches)	79%	very high
June Weather	18°C (65°F)	105 mm (4.1 inches)	75%	very high
July Weather	21°C (70°F)	87 mm (3.4 inches)	75%	very high
August Weather	20°C (68°F)	95 mm (3.7 inches)	75%	very high
September Weather	16°C (60°F)	69 mm (2.7 inches)	79%	high
October Weather	9°C (48°F)	116 mm (4.6 inches)	85%	moderate
November Weather	1°C (34°F)	62 mm (2.4 inches)	88%	moderate
December Weather	-3°C (27°F)	64 mm (2.5 inches)	89%	low