January in Berkeley averages a daily high of 14.7°C with nights around 6.8°C. Expect roughly 11.4 wet days totalling 125.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Berkeley is May–October.
Based on BERKELEY, CA US (1.1km), 1995–2024. 27 years of January data.