Climate almanac
San Antonio
Texas, United States · 29.42°, -98.49°
What is the weather like in San Antonio in September?
In September, San Antonio is typically 92°F (33°C) during the day and 71°F (22°C) at night. The month brings about 3.0 in (77 mm) of precipitation in total.
- Average high92°F (33°C)
- Average low71°F (22°C)
- Precipitation3.0 in (77 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)