Climate almanac
Petaluma
California, United States · 38.23°, -122.64°
What is the weather like in Petaluma in October?
In October, Petaluma is typically 72°F (22°C) during the day and 51°F (11°C) at night. The month brings about 1.5 in (37 mm) of precipitation in total.
- Average high72°F (22°C)
- Average low51°F (11°C)
- Precipitation1.5 in (37 mm)
- Clear or mostly clear days18
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)