July in Houston averages a daily high of 34°C with nights around 24.8°C. Expect roughly 9.5 wet days totalling 127.8mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Houston is February–April.
Based on HOUSTON WILLIAM P HOBBY AIRPORT, TX US (15.2km), 1995–2024. 30 years of July data.