Northern CA coastal temps don’t get below 30 degrees for too long, but for early garden starts, the Mini Greenhouse works like a charm. Even with a low profile and in the backyard, it is protected from wind and anchored with some bricks, but I would think it could easily tumble away if not secured. The only bummer was when someone accidentally leaned on a corner snapping the plastic connector, I couldn’t find any replacement part so I rigged with a PVC piece that came close and secured it with... what else-Duct Tape! Very happy.