Climate almanac
Alpharetta
Georgia, United States · 34.08°, -84.29°
What is the weather like in Alpharetta in September?
In September, Alpharetta is typically 83°F (28°C) during the day and 66°F (19°C) at night. The month brings about 3.9 in (100 mm) of precipitation in total.
- Average high83°F (28°C)
- Average low66°F (19°C)
- Precipitation3.9 in (100 mm)
- Clear or mostly clear days14
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)