January in Hanford averages a daily high of 13.5°C with nights around 3.1°C. Expect roughly 8.3 wet days totalling 46.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hanford is April–May.
Based on HANFORD 1 S, CA US (1.5km), 1995–2024. 30 years of January data.