Sun Snow during summer?

It can happen in real life in some parts of the world, but its pretty rare as far as I know. It never sticks.

It can happen on the mysterious weather days.

I remember that happening in my country few years ago. The news were talking a lot about snow during the summer.
It can happen in real life. So don't worry, it's not a bug.

The first year we were here in our new state, it snowed as late as June!

In my game I had snow in Oasis Springs. It wasn't Summer, but it definitely was not a freezing day, either. It did not stay on ground, but was a weird and cool happening.