I am wondering if this may have have been a source of influence or inspiration.
The inhabitants of a sleepy town on a small Maine island find themselves cut off from civilization during the worst snowstorm of the century, only to find terror knocking on their door when an evil stranger comes to town. As streets disappear under the snow, and the little light they have is...
www.hulu.com
Haven't read the Stephen King book, but we are watching this on Hulu. It checks a lot of the same boxes, creepy island on the east cost, mysterious visitor doing evil things, people dying, town meeting in the church, etc. The storm is just the background of this stuff that reminded me of Midnight Mass. Totally different story, a lot of similarities.