November in Cupertino averages a daily high of 18.5°C with nights around 8.3°C. Expect roughly 9.2 wet days totalling 34mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Cupertino is May–October.
Based on MOFFETT FEDERAL AIRFIELD, CA US (9.3km), 1995–2024. 20 years of November data.