Vostok is the World Pole of Cold. During the long winter, temperatures average about −65 °C (−85 °F) in the brief summer, about −30 °C (−22 °F). The lowest reliably measured temperature on Earth of −89.2 °C (−128.6 °F) was in Vostok on 21 July 1983. The warmest recorded temperature at Vostok is −12.2 °C (10.0 °F), which occurred on 11 January 2002.