Hailstones are formed by layers of water attaching and freezing in a large cloud. The biggest cloud of all is cumulonimbus which was really devastating as there was enormous hailstones the hailstone size went from 5mm to 200mm! Hailstones fall so quickly they don’t have a chance to melt. Hailstones are actually more common in summer because there is more energy available at warmer times of the year. Warmer weather might actually result in a stronger updraft, an updraft is an up current of air. So the water rises up and freezes so that’s how we get more hail stones in summer.
by Dakota and Daisy