The knee is the largest joint in the human body and is considered the most complicated one. It is formed by the lower part of the femur, the tibial plateau and the knee cap.
Calgary's spring weather is unstable. Some April and May days are sunny and warm, indeed hot. Yet April, May and sometimes even June(!) can bring snow. When it snows in late spring / early summer, the snow typically is wet and heavy, unlike winter snow that more often is light and fluffy.
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.