July in Denver averages a daily high of 33.5°C with nights around 16.5°C. Expect roughly 7.9 wet days totalling 48mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Denver is September–October.
Based on DENVER WATER DEPARTMENT, CO US (2.3km), 1995–2024. 27 years of July data.