Will My Portable HD Break If I Put It In A Hot Attic?

I want to store some stuff in my attic. In the summer it gets really hot up there. Maybe around 150 degrees Fahrenheit or so, and possibly up to 190 if there is a big heatwave or something. Anyway, I was wondering if I put say a "Western Digital My Passport Essentials SE" portable HD up there would anything bad happen to it?