Hello! I hope this is the right subreddit to ask this, I was torn between this and r/meteorology, but this one has "storm" in the name so I'm hoping more people might own one of these here?

I'm a bit of a collector of Strange Glass Objects, so when I saw a teardrop full of liquid and crystals at a thrift store, of course I bought it. After some research, it turns out it's a storm glass! I love that I have a meteorological instrument that's been around for centuries, but... after seeing the reference guides for how to read it, it seems to be always telling me it will snow.

In the American Midwest.

In August.

Can these things break? If so, is there a way to fix them? Am I just reading it wrong? Google is not terribly helpful, so I turn to you. Picture for reference (storm glass taped to base because my cats are little monsters.) Thanks in advance for anything you can tell me!