July in Amarillo averages a daily high of 33.8°C with nights around 19°C. Expect roughly 7.4 wet days totalling 69.2mm. 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 July data.