I have flown around 25F. No issues. These are my first flights, so far the aircraft out last my hands. LOL. Going up to northern Wisconsin in a few days, where it will be about 20F. I always leave the aircraft and controller in the box it was shipped with. I think it keeps it warm a little. I don't take it out until I'm on location. And it a good place to set it out of the snow. I also leave it in the box when I'm done and bring it indoors. It keeps the aircraft cool, and allows it to warm up slowly. Better for the electronics. I also always use a fully charged battery. The batts will never have a long life in the cold.