December in Fresno averages a daily high of 13.8°C with nights around 4.2°C. Expect roughly 7.7 wet days totalling 48.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Fresno is April.
Based on FRESNO YOSEMITE INTERNATIONAL, CA US (5.9km), 1995–2024. 30 years of December data.