<P> In North America , hail is most common in the area where Colorado , Nebraska , and Wyoming meet , known as `` Hail Alley '' . Hail in this region occurs between the months of March and October during the afternoon and evening hours , with the bulk of the occurrences from May through September . Cheyenne , Wyoming is North America 's most hail - prone city with an average of nine to ten hailstorms per season . To the north of this area and also just downwind of the Rocky Mountains is the Hailstorm Alley region of Alberta , which also experiences an increased incidence of significant hail events . </P>
<P> In North America , hail is most common in the area where Colorado , Nebraska , and Wyoming meet , known as `` Hail Alley '' . Hail in this region occurs between the months of March and October during the afternoon and evening hours , with the bulk of the occurrences from May through September . Cheyenne , Wyoming is North America 's most hail - prone city with an average of nine to ten hailstorms per season . To the north of this area and also just downwind of the Rocky Mountains is the Hailstorm Alley region of Alberta , which also experiences an increased incidence of significant hail events . </P>
what time of year is hail most likely
what time of year is hail most likely
between the months of March and October during the afternoon and evening hours , with the bulk of the occurrences from May through September
between the months of March and October during the afternoon and evening hours , with the bulk of the occurrences from May through September