what is the weather in calgary canada in september
Weather in Calgary in September. The average maximum daytime temperature in Calgary in September is a comfortable 17Â°C (63Â°F). There are usually 7 hours of bright sunshine each day, which represents 52% of the 13 hours of daylight. Expect 44mm (1.7 inches) of rainfall across the whole of September with 8 days with some rain falling.