September in Conroe averages a daily high of 32.2°C with nights around 21.2°C. Expect roughly 6.7 wet days totalling 96.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Conroe is February–April.
Based on CONROE, TX US (3.3km), 1995–2024. 28 years of September data.