December in Yorba Linda averages a daily high of 21.1°C with nights around 9°C. Expect roughly 5.8 wet days totalling 60.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Yorba Linda is March–June.
Based on ANAHEIM, CA US (3.8km), 1995–2024. 30 years of December data.