Atlanta Climate & Weather Averages
United States · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Best Time to Visit Atlanta
Based on temperature comfort, low rainfall, and sunshine hours, the best months to visit Atlanta are:
June, September, August
Scores based on ideal temperature (18-28°C), low precipitation, and high sunshine. June scores 62/100.
Atlanta has a Humid Subtropical climate with warm summers and cold winters. The warmest month is July with an average temperature of 25.7°C (78.3°F), while January is the coldest at 6.9°C (44.4°F). Annual precipitation averages 1628.0mm spread across approximately 187.0 rainy days per year, with July being the wettest month at 226.7mm and November the driest at 72.0mm. The city receives an average of 6.4-11.3 hours of sunshine per day, with the sunniest months being June and July. Humidity remains relatively consistent throughout the year, averaging around 72.0% annually, while average wind speeds reach 18.3 km/h. The overall annual mean temperature is 16.7°C (62.1°F), reflecting the humid subtropical conditions shaped by Atlanta's latitude (33.75°) and surrounding geography. For travelers, the best time to visit is June, September, August, when temperatures are comfortable and rainfall is lower.
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.
Seasonal Climate Overview
Spring (Mar-May)
Average temperature 16.5°C (61.7°F), rainfall 131.8mm, sunshine 9.7 hrs/day, humidity 68.4%. Mild transitional weather characterizes this period. Expect around 14.3 rainy days per month.
Summer (Jun-Aug)
Average temperature 25.2°C (77.4°F), rainfall 160.0mm, sunshine 11.0 hrs/day, humidity 74.9%. Warm season conditions prevail. Expect around 22.7 rainy days per month.
Autumn (Sep-Nov)
Average temperature 17.1°C (62.8°F), rainfall 110.8mm, sunshine 8.8 hrs/day, humidity 71.6%. Mild transitional weather characterizes this period. Expect around 11.3 rainy days per month.
Winter (Dec-Feb)
Average temperature 8.2°C (46.8°F), rainfall 140.1mm, sunshine 6.5 hrs/day, humidity 73.3%. Mild transitional weather characterizes this period. Expect around 14.2 rainy days per month.
Monthly Temperature Averages (°C / °F)
| Month | Avg High | Avg Low | Mean Temp |
|---|---|---|---|
| January | 11.9°C (53.4°F) | 2.6°C (36.7°F) | 6.9°C (44.4°F) |
| February | 14.9°C (58.8°F) | 4.7°C (40.5°F) | 9.4°C (48.9°F) |
| March | 18.8°C (65.8°F) | 8.2°C (46.8°F) | 13.3°C (55.9°F) |
| April | 21.6°C (70.9°F) | 10.1°C (50.2°F) | 15.7°C (60.3°F) |
| May | 26.0°C (78.8°F) | 15.3°C (59.5°F) | 20.4°C (68.7°F) |
| June | 30.0°C (86.0°F) | 19.6°C (67.3°F) | 24.5°C (76.1°F) |
| July | 30.7°C (87.3°F) | 21.7°C (71.1°F) | 25.7°C (78.3°F) |
| August | 30.6°C (87.1°F) | 21.3°C (70.3°F) | 25.4°C (77.7°F) |
| September | 27.2°C (81.0°F) | 17.8°C (64.0°F) | 22.1°C (71.8°F) |
| October | 22.8°C (73.0°F) | 12.4°C (54.3°F) | 17.2°C (63.0°F) |
| November | 17.4°C (63.3°F) | 7.5°C (45.5°F) | 12.1°C (53.8°F) |
| December | 13.3°C (55.9°F) | 4.0°C (39.2°F) | 8.3°C (46.9°F) |
Monthly Precipitation (mm)
| Month | Avg Rainfall | Bar |
|---|---|---|
| January | 141.2 mm | |
| February | 163.9 mm | |
| March | 157.4 mm | |
| April | 116.5 mm | |
| May | 121.4 mm | |
| June | 105.6 mm | |
| July | 226.7 mm | |
| August | 147.7 mm | |
| September | 177.4 mm | |
| October | 82.9 mm | |
| November | 72.0 mm | |
| December | 115.3 mm |
Monthly Rainy Days (avg days with rain > 0.1mm)
| Month | Avg Rainy Days | Bar |
|---|---|---|
| January | 14.6 | |
| February | 14.8 | |
| March | 14.2 | |
| April | 12.6 | |
| May | 16.0 | |
| June | 19.2 | |
| July | 24.6 | |
| August | 24.4 | |
| September | 14.4 | |
| October | 8.8 | |
| November | 10.6 | |
| December | 13.2 |
Monthly Humidity (%)
| Month | Avg Humidity | Bar |
|---|---|---|
| January | 73.0% | |
| February | 72.5% | |
| March | 70.1% | |
| April | 65.3% | |
| May | 69.7% | |
| June | 69.6% | |
| July | 78.5% | |
| August | 76.7% | |
| September | 73.1% | |
| October | 71.2% | |
| November | 70.4% | |
| December | 74.5% |
Monthly Wind Speed (avg max km/h)
| Month | Avg Max Wind | Bar |
|---|---|---|
| January | 21.3 km/h | |
| February | 21.5 km/h | |
| March | 21.4 km/h | |
| April | 20.4 km/h | |
| May | 18.7 km/h | |
| June | 17.1 km/h | |
| July | 14.3 km/h | |
| August | 14.5 km/h | |
| September | 16.8 km/h | |
| October | 16.8 km/h | |
| November | 18.4 km/h | |
| December | 18.7 km/h |
Monthly UV Index (avg max)
| Month | UV Index | Risk Level | Bar |
|---|---|---|---|
| January | — | — | |
| February | — | — | |
| March | — | — | |
| April | — | — | |
| May | — | — | |
| June | — | — | |
| July | — | — | |
| August | — | — | |
| September | — | — | |
| October | — | — | |
| November | — | — | |
| December | — | — |
Monthly Snowfall (cm)
| Month | Avg Snowfall | Bar |
|---|---|---|
| January | 0.9 cm | |
| February | 0.6 cm | |
| March | 0.0 cm | |
| April | 0.0 cm | |
| May | 0.0 cm | |
| June | 0.0 cm | |
| July | 0.0 cm | |
| August | 0.0 cm | |
| September | 0.0 cm | |
| October | 0.0 cm | |
| November | 0.0 cm | |
| December | 0.0 cm |
Monthly Sunshine Hours (daily average)
| Month | Avg Daily Sunshine | Bar |
|---|---|---|
| January | 6.6 hrs | |
| February | 6.6 hrs | |
| March | 8.0 hrs | |
| April | 10.4 hrs | |
| May | 10.6 hrs | |
| June | 11.3 hrs | |
| July | 10.8 hrs | |
| August | 10.8 hrs | |
| September | 9.5 hrs | |
| October | 9.2 hrs | |
| November | 7.7 hrs | |
| December | 6.4 hrs |
Frequently Asked Questions
What is the hottest month in Atlanta?
July is the hottest month with an average temperature of 25.7°C (78.3°F).
What is the coldest month in Atlanta?
January is the coldest month with an average temperature of 6.9°C (44.4°F).
What is the rainiest month in Atlanta?
July is the wettest month with an average of 226.7mm of precipitation. The city experiences about 187.0 rainy days per year.
When is the best time to visit Atlanta?
The best time to visit Atlanta is during June, September, August, when temperatures are comfortable and rainfall is lower.
Cities with Similar Climate (Humid Subtropical)
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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.