July in Richardson averages a daily high of 34.9°C with nights around 24.3°C. Expect roughly 5.1 wet days totalling 54.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Richardson is March–April.
Based on RICHARDSON, TX US (5.5km), 1995–2024. 19 years of July data.