December in Bellflower averages a daily high of 19.5°C with nights around 8.3°C. Expect roughly 5.4 wet days totalling 56.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Bellflower is April–November.
Based on LONG BEACH DAUGHERTY AIRPORT, CA US (8.3km), 1995–2024. 30 years of December data.