August in Denver averages a daily high of 32.3°C with nights around 15.2°C. Expect roughly 8.4 wet days totalling 43.8mm. 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 August data.