September in DeSoto averages a daily high of 32.1°C with nights around 20.2°C. Expect roughly 5.6 wet days totalling 74mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit DeSoto is March–April.
Based on DALLAS REDBIRD AIRPORT, TX US (9.9km), 1995–2024. 27 years of September data.