Climate almanac
Decatur
Alabama, United States · 34.61°, -86.98°
What is the weather like in Decatur in September?
In September, Decatur is typically 85°F (29°C) during the day and 67°F (19°C) at night. The month brings about 3.2 in (80 mm) of precipitation in total.
- Average high85°F (29°C)
- Average low67°F (19°C)
- Precipitation3.2 in (80 mm)
- Clear or mostly clear days16
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)