January in Baytown averages a daily high of 17.6°C with nights around 6.1°C. Expect roughly 9.8 wet days totalling 114.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Baytown is February–May.
Based on BAYTOWN, TX US (19.9km), 1995–2024. 29 years of January data.