Climate almanac
Gilroy
California, United States · 37.01°, -121.57°
What is the weather like in Gilroy in September?
In September, Gilroy is typically 79°F (26°C) during the day and 57°F (14°C) at night. The month brings about 0.1 in (3 mm) of precipitation in total.
- Average high79°F (26°C)
- Average low57°F (14°C)
- Precipitation0.1 in (3 mm)
- Clear or mostly clear days25
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)