Definition
Something 'unweathered' hasn't been exposed to the elements for a significant amount of time, or it's been protected from them. Think of a brand-new car with its shiny paint, or a piece of wood kept indoors that retains its original colour and texture. It signifies freshness and lack of wear and tear from natural forces. It's the opposite of 'weathered,' implying pristine condition. It might even suggest something artificial or overly protected.