why does summer bring hailstorms

why does summer bring hailstorms a song by Sanitas on BeMusic

Mountain by Sanitas,
Back Towards Me by Sanitas,
Say Something by Sanitas,
can't breathe inside air anymore by Sanitas,
Waking up by Sanitas,
Always Moving (feat. Holly Lovell) by Sanitas,
Decisions by Sanitas,
Nah, I'm Good by Sanitas,
Every's Watching (feat. LUUNG) by Sanitas,
Nostalgia (coffee) by Sanitas,
Papa by Sanitas,
Wash Away by Sanitas,
I Can't Sleep by Sanitas,
why does summer bring hailstorms by Sanitas,
Our Time Together (afterthought) by Sanitas,