May in San Angelo averages a daily high of 31.6°C with nights around 17°C. Expect roughly 6.8 wet days totalling 77.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit San Angelo is February–April.
Based on SAN ANGELO MATHIS FIELD AIRPORT, TX US (11.5km), 1995–2024. 30 years of May data.