August in Amarillo averages a daily high of 32.9°C with nights around 18.5°C. Expect roughly 7.8 wet days totalling 67.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Amarillo is March–May.
Based on AMARILLO AIRPORT, TX US (11.2km), 1995–2024. 30 years of August data.