During winter cold, a mask is actually pretty warm when I walk out of a store. It may suck in July, but it's nice in January. I can certainly see people wearing one during the cold season. Now that we are all accustomed to wearing a mask and seeing everyone else wearing one, nobody will feel out of place or embarrassed while wearing one in the future. It will be very easy to just throw one on if you feel like it may offer protection, without having any worry that others might stare at you and wonder why you are wearing it.