The temperate zones are located between the polar and tropical zones. They have a moderate climate, with four distinct seasons. The summers are warm, the winters are cold, and the spring and fall are mild. The average temperature in the temperate zones ranges from about -30 degrees Celsius in the winter to about 30 degrees Celsius in the summer. The polar zones are located at the Earth's poles. They have a very cold climate, with long, dark winters and short, cool summers. The average temperature in the polar zones ranges from about -50 degrees Celsius in the winter to about 10 degrees Celsius in the summer.