July in Rowlett averages a daily high of 34.9°C with nights around 22.5°C. Expect roughly 5.4 wet days totalling 45.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Rowlett is March–April.
Based on LAVON DAM, TX US (16.4km), 1995–2024. 19 years of July data.