December in South Gate averages a daily high of 19.9°C with nights around 9.2°C. Expect roughly 5.6 wet days totalling 67.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit South Gate is April–November.
Based on LOS ANGELES DOWNTOWN USC, CA US (10.6km), 1995–2024. 30 years of December data.