November in Westminster averages a daily high of 23.7°C with nights around 10.4°C. Expect roughly 4.2 wet days totalling 18.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Westminster is April–June.
Based on FULLERTON MUNICIPAL AIRPORT, CA US (12.7km), 1995–2024. 27 years of November data.