Climate almanac
Diamond Bar
California, United States · 34.03°, -117.81°
What is the weather like in Diamond Bar in October?
In October, Diamond Bar is typically 80°F (27°C) during the day and 58°F (14°C) at night. The month brings about 0.5 in (13 mm) of precipitation in total.
- Average high80°F (27°C)
- Average low58°F (14°C)
- Precipitation0.5 in (13 mm)
- Clear or mostly clear days24
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)