December in Baytown averages a daily high of 18.5°C with nights around 7.5°C. Expect roughly 9.8 wet days totalling 119.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Baytown is February–May.
Based on BAYTOWN, TX US (19.9km), 1995–2024. 29 years of December data.