October in San Rafael averages a daily high of 24.7°C with nights around 10°C. Expect roughly 3.5 wet days totalling 61.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit San Rafael is May–October.
Based on KENTFIELD, CA US (2.2km), 1995–2024. 25 years of October data.