May in Carrollton averages a daily high of 29.2°C with nights around 18.4°C. Expect roughly 9.3 wet days totalling 121mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Carrollton is March–April.
Based on DAL FTW WSCMO AIRPORT, TX US (13.8km), 1995–2024. 30 years of May data.