Climate Overview
The climate in Atlanta Airport is cool. The average annual temperature is 3°C and approximately 904mm of precipitation falls per year. February is the wettest month, receiving around 140mm 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 -12°C. Atlanta Airport experiences heavy snowfall, typically from January through December.
Temperature
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 25°C and the mean temperature sits around 17°C. The coldest month is December, when overnight lows fall to -12°C and the daily average is -8°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.
Precipitation
Atlanta Airport is a moderately rainy area, receiving approximately 904mm of precipitation annually, which averages out to around 75mm per month. The wettest month is February, averaging 140mm of rainfall. January and March also tend to see above-average precipitation. The driest month is July, with just 12mm. That's 128mm less than February, 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 618cm annually from January through December. The snowiest month is February, with approximately 130cm. Winter travel should account for significant snow cover.
Wind
Atlanta Airport is relatively calm, with an average annual wind speed of 2km/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 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.
Seasons
2 days until Summer
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 25°C, while the coldest stretch bottoms out in December near -12°C. Summer is next, beginning on June 21, 2026 — 2 days from now.
Spring
Temperatures range from -5 to 12°C. Precipitation is moderate at around 275mm for the season, averaging 92mm per month. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 4 to 25°C. Rainfall is relatively light, with around 73mm over the season and a monthly average of 24mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -7 to 19°C. Precipitation is moderate at around 192mm for the season, averaging 64mm per month. Expect around 102cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from -12 to -1°C. Rainfall is heavy, totalling around 363mm across the season with a monthly average of 121mm. Expect around 349cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Best Time to Visit
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 12mm per month. By contrast, December can be quite cold with temperatures dropping to -12°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
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.
