Winters when easterly flows from Siberia predominate, like 1941–42, 1955–56 and 1984–85,[3] are very cold, whereas winters dominated by westerly maritime airflows like 1924–25, 1960–61 and 1988–89 are mild with temperatures above freezing a normal occurrence. −20 °C or −4 °F occurs almost every winter. Winter extremes are −34 °C (−29 °F) at the coast and −43 °C (−45 °F) in the east of Lithuania. The average annual precipitation is 800 millimetres (31.5 in) on the coast, 900 mm (35.4 in) in Samogitia highlands and 600 mm (23.6 in) in the eastern part of the country.