Climate almanac
Round Rock
Texas, United States · 30.51°, -97.68°
What is the weather like in Round Rock in September?
In September, Round Rock is typically 91°F (33°C) during the day and 71°F (22°C) at night. The month brings about 2.9 in (72 mm) of precipitation in total.
- Average high91°F (33°C)
- Average low71°F (22°C)
- Precipitation2.9 in (72 mm)
- Clear or mostly clear days16
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)