denver weather august average
Weather in Denver in August. The average maximum daytime temperature in Denver in August is a hot 30Â°C (86Â°F) with moderate heat & humidity. There are usually 10 hours of bright sunshine each day, which represents 72% of the 14 hours of daylight. Expect 40mm (1.6 inches) of rainfall across the whole of August with 9 days with some rain falling.