Mean monthly temperatures range from in July, the coldest month, to in January, the warmest month. During summer (December–February), the average high is between while the average low is between . In winter, mean temperatures are around . A temperature of was recorded on 24 March 2015. This reading was the highest temperature ever recorded on mainland Antarctica and its surrounding islands, until on 6 February 2020, a new high of was recorded at the base, being the current record. The lowest temperature ever recorded is on 18 July 1994.