December in Turlock averages a daily high of 13.4°C with nights around 5°C. Expect roughly 10.5 wet days totalling 66.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Turlock is April–May.
Based on TURLOCK NUMBER 2, CA US (0.8km), 1995–2024. 28 years of December data.