January in Davis averages a daily high of 13.7°C with nights around 3.7°C. Expect roughly 12.6 wet days totalling 103.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Davis is April–May.
Based on DAVIS 2 WSW EXPERIMENTAL FARM, CA US (3.3km), 1995–2024. 29 years of January data.