Alpharetta Climate: Weather by Month and Best Time to Visit
Best months for Alpharetta: October, September, April, May.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 11°C | 2°C | 117 mm | 10 | – | – | 5.8 |
| February | 14°C | 3°C | 117 mm | 10 | – | – | 6.3 |
| March | 18°C | 7°C | 121 mm | 10 | – | – | 6.9 |
| April | 22°C | 11°C | 102 mm | 10 | – | – | 7.7 |
| May | 26°C | 16°C | 85 mm | 10 | – | – | 7.7 |
| June | 30°C | 20°C | 104 mm | 14 | – | – | 7.0 |
| July | 31°C | 22°C | 104 mm | 15 | – | – | 6.4 |
| August | 31°C | 21°C | 104 mm | 13 | – | – | 6.8 |
| September | 28°C | 18°C | 91 mm | 8 | – | – | 7.9 |
| October | 23°C | 12°C | 86 mm | 7 | – | – | 8.1 |
| November | 17°C | 6°C | 99 mm | 8 | – | – | 7.1 |
| December | 13°C | 3°C | 116 mm | 10 | – | – | 6.0 |