May in Waco averages a daily high of 29°C with nights around 17.9°C. Expect roughly 8.5 wet days totalling 121.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Waco is March–April.
Based on WACO DAM, TX US (8.7km), 1995–2024. 19 years of May data.