September in Mansfield averages a daily high of 32.2°C with nights around 19.8°C. Expect roughly 5.4 wet days totalling 76.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Mansfield is March–April.
Based on ARLINGTON MUNICIPAL AIRPORT, TX US (11.4km), 1995–2024. 26 years of September data.