Atlanta Weather in January
United States · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Atlanta sees average temperatures ranging from a low of 2.6°C (36.7°F) to a high of 11.9°C (53.4°F), with a mean of 6.9°C (44.4°F). Compared to the annual average of 16.7°C (62.1°F), this month is 9.8°C cooler than the yearly norm. This is the coldest month of the year, with average lows of 2.6°C (36.7°F). Precipitation averages 141.2mm, making it approximately 6.0mm wetter than the monthly average of 136.0mm. The city receives an average of 6.6 hours of sunshine per day during January, with relative humidity averaging 73.0%. Wind speeds reach an average maximum of 21.3 km/h. Snowfall averages 0.9cm during January, which can affect travel plans and outdoor activities. For travelers, this month offers a coldest month of the year experience in Atlanta, with wetter-than-average conditions compared to the rest of the year.
Atlanta's humid subtropical climate creates hot summers and mild winters. I've studied the data and found that the city's tree canopy provides some relief from the summer heat. The best time for visiting is March to May and September to November, when temperatures are comfortable and the city's parks and outdoor attractions are most enjoyable.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | 8.3°C (46.9°F) | 6.9°C (44.4°F) | 9.4°C (48.9°F) |
| Rainfall | 115.3mm | 141.2mm | 163.9mm |
| Sunshine | 6.4 hrs | 6.6 hrs | 6.6 hrs |
| Humidity | 74.5% | 73.0% | 72.5% |
| Wind | 18.7 km/h | 21.3 km/h | 21.5 km/h |
| Rainy Days | 13.2 | 14.6 | 14.8 |
| Snowfall | 0.0 cm | 0.9 cm | 0.6 cm |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Atlanta in January, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Atlanta in January?
The average temperature in Atlanta during January ranges from 2.6°C (36.7°F) to 11.9°C (53.4°F), with a mean of 6.9°C (44.4°F).
How much does it rain in Atlanta in January?
Atlanta receives an average of 141.2mm of precipitation in January, spread across approximately 14.6 rainy days.
What should I pack for Atlanta in January?
Based on January weather data, pack warm layers, a medium jacket, and waterproof outerwear. Rain gear is essential — this month averages 141.2mm of precipitation.
Is January a good time to visit Atlanta?
January is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Atlanta
Cities with Similar January Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 33.75°, -84.39°. Timezone: America/New_York. Last updated: 2026-07-30.