September in Baytown averages a daily high of 31.6°C with nights around 21.6°C. Expect roughly 9 wet days totalling 160mm. 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. 28 years of September data.