Most pictures lack snow. You’d expect the interior of a room to lack snow. Lack of snow alone does not communicate anything unless it’s in a context where you’d normally expect there to be snow.

If I was a visual designer, and I was tasked with providing a picture to represent warmth, I might choose, I don’t know; hands in mittens clutching steaming mugs of cocoa, a cat snoozing in front of a roaring fire, or what else? Welcoming light shining from the windows of a house in a snowy landscape! If I submitted a nondescript photo off of a real estate listing, and said “look bro! No snow”, I’d be looking for a new job.