How Fast Does Hail Fall?

According to the National Severe Storms Laboratory, there are only estimates about the speed hail falls. One estimate is that a 1cm (0.4 inch) hailstone falls at 9 m/s, and an 8cm (3.1 inches) weighing .7kg (1.5lbs) at 171km/h. Some hail the size of a baseball falls at a speed of 171km/h or 106 miles per hour.