Climate Insights for Atlanta Airport

The climate in Atlanta Airport is cool. The average annual temperature is 4°C and approximately 804mm of precipitation falls per year. December is the wettest month, receiving around 122mm of rainfall. Atlanta Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are December, January, February, when temperatures can drop to -11°C. Atlanta Airport experiences heavy snowfall, typically from January through December.

Atlanta Airport has a wide annual temperature range, spanning 37°C from the coldest to warmest months. The warmest month is July, when average highs reach 26°C and the mean temperature sits around 17°C. The coldest month is December, when overnight lows fall to -11°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 8°C shift in average temperatures.

Atlanta Airport is a moderately rainy area, receiving approximately 804mm of precipitation annually, which averages out to around 67mm per month. The wettest month is December, averaging 122mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 11mm. That's 111mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Atlanta Airport receives heavy snowfall, accumulating around 398cm annually from January through December. The snowiest month is December, with approximately 86cm. Winter travel should account for significant snow cover.

Atlanta Airport is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 9km/h in winter, 11km/h in spring, 13km/h in summer, 11km/h in autumn.

It is currently spring in Atlanta Airport, which began on March 20, 2026. Atlanta Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 26°C, while the coldest stretch bottoms out in December near -11°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The best time to visit Atlanta Airport is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 15mm per month. By contrast, December can be quite cold with temperatures dropping to -11°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Atlanta Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.