The Nest × Yale Lock is certified ANSI/BHMA A156.36, Grade 2. It was designed to work in outside temperatures as cold as –22° and as hot as 140°F (–30° to 60°C).
It additionally offers an IP65 rating which means that it can withstand dust, rain, and snow.
Since the Nest × Yale Lock is mounted on your door, part of the lock will be inside your home, and part of the lock will be outside your home. These weather ratings refer to the portion of the lock outside your home.