Chimney ConsiderationsWood burning outdoor fireplaces create a lot of smoke. Code requires that chimney height be 2 feet taller than adjacent structures like patio covers and homes, so plan accordingly. Getting a fireplace to draw properly outdoors has its challenges.
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.
Denver Average Weather. 1  The highest monthly average temperature in Denver for July is 74 degrees. 2  The lowest monthly average temperature in Denver for December is 28 degrees. 3  The most monthly precipitation in Denver occurs in August with 2.7 inches.  The air quality index in Denver is 8% worse than the national average.