Winters on the Anatolian plateau are especially severe. Temperatures of −30 °C to −40 °C (−22 °F to −40 °F) do occur in northeastern Anatolia, and snow may lie on the ground for at least 120 days of the year, and during the entire year on the summits of the highest mountains. In central Anatolia the temperatures can drop below -20 °C ( -4 °F) with the mountains being even colder.