June is the start of summer, or, at least it was. My grass was green on April 30 and all my trees leafed on May 1. The first three decades we lived here there was always snow and ice in the back corner of the yard until May long weekend.
When I coached youth soccer it rained the month of May. At least two practices of the eight-week season would be called on rain. Not just light rain but pouring rain that would damage the field. The practices were often cold and wet.