I’m near Baltimore, MD and was concerned with the winter months coming. I emailed Headlight Magic to ask if there were any recommended temperature ranges for the UV coating. They said no issues with their product in the cold, just don’t use it while there’s any precipitation (which makes sense). They did recommend blowing air on the UV coating to help it dry faster (suggesting using a hair dryer on low without the heat on).
Passing along in case it’s helpful to you. Let’s do this!!