January Weather in Atlanta, United States

Last updated: June 24, 2025

In January, the average temperature in Atlanta, United States hovers around 8°C (47°F), with a minimum dipping to -13°C (8°F) and a maximum soaring to 25°C (78°F). Expect 107 mm (4.2 in) of precipitation spread over about 9 days, contributing to an average humidity of 82%.

January Temperature in Atlanta

In January in Atlanta, the average temperature is 8°C (47°F), with maximums reaching 25°C (78°F) and minimums dropping as low as -13°C (8°F). Be prepared for a wide range of temperatures when traveling 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 8°C (47°F), with highs reaching up to 25°C (78°F) and lows dropping to around -13°C (8°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 precipitation amount is 107 mm (4.2 in), occurring over a span of 9 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 107 mm (4.2 inches) of precipitation spread over approximately 9 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 82%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and requiring extra layers to stay warm and comfortable.

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 82%, 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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Atlanta for better planning.

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 4, which falls under the moderate 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	8°C (47°F)	107 mm (4.2 inches)	82%	moderate
February Weather	10°C (50°F)	155 mm (6.1 inches)	80%	high
March Weather	15°C (60°F)	134 mm (5.3 inches)	78%	very high
April Weather	18°C (65°F)	171 mm (6.7 inches)	79%	very high
May Weather	23°C (74°F)	153 mm (6.0 inches)	81%	extreme
June Weather	27°C (81°F)	105 mm (4.1 inches)	77%	extreme
July Weather	29°C (84°F)	89 mm (3.5 inches)	72%	extreme
August Weather	28°C (83°F)	87 mm (3.4 inches)	65%	extreme
September Weather	26°C (79°F)	96 mm (3.8 inches)	63%	very high
October Weather	20°C (68°F)	106 mm (4.2 inches)	70%	very high
November Weather	13°C (56°F)	66 mm (2.6 inches)	82%	high
December Weather	11°C (52°F)	130 mm (5.1 inches)	88%	moderate