January in Livermore averages a daily high of 14.5°C with nights around 4.3°C. Expect roughly 10.2 wet days totalling 76mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Livermore is April–June.
Based on LIVERMORE, CA US (1.5km), 1995–2024. 30 years of January data.