Climate almanac
Mountain House
California, United States · 37.78°, -121.54°
What is the weather like in Mountain House in September?
In September, Mountain House is typically 86°F (30°C) during the day and 59°F (15°C) at night. The month brings about 0.2 in (5 mm) of precipitation in total.
- Average high86°F (30°C)
- Average low59°F (15°C)
- Precipitation0.2 in (5 mm)
- Clear or mostly clear days26
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)