Petaluma Weather in November

The climate in Petaluma during November can be summarized as mild and damp.

November is in the fall / autumn in Petaluma and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 18°C (63°F), whilst at night 5°C (42°F) is normal.

On average November is the 4th wettest month of the year in Petaluma with around 116mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.4 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Petaluma in November 2025.