Dover Climate Weather By Month Average Temperature Vermont The atmospheric conditions near Dover in Vermont can be fluctuating. The heat can be intense. The temperatures can drop. The sky can be clear. It can be cloudy. A thick layer of fog can engulf the area. Precipitation can fall from the sky. Snowflakes can gently fall. The wind can be howling. Thunderstorms might occur. As a whole, Dover, Vermont presents a wide range of weather conditions.