Mcmurdo 00Z 300hPa temperature 1956 - - - - - - - -63.9 -62.3 -61.5 - - 1957 - - - -56.3 -57.9 -61.2 -63.1 -63.9 -62.3 -59.2 -52.1 -50.7 1958 - - -50.4 -54.8 -58.3 -62.4 -61.6 -63.6 -64.8 -61.7 -58.1 -52.8 1959 -50.0 -48.3 - - -57.7 -62.7 -62.9 -63.1 -65.2 -62.0 -59.3 -55.1 1960 -51.9 -48.2 - - - - - - - - - - 1961 -49.5 -53.4 -52.8 -55.7 -59.9 -60.1 -63.1 -63.9 -62.6 -61.4 -60.0 - 1962 -51.8 -51.9 -50.4 -57.5 -60.3 -62.5 -63.3 -63.3 -63.4 -59.9 -53.7 -49.5 1963 -47.4 -46.1 -49.9 -56.0 -60.9 -60.9 -63.5 -64.1 -63.5 -62.7 -59.0 -53.6 1964 -47.0 -50.3 -51.8 -58.8 -60.1 -63.5 -61.9 -62.8 -63.1 -60.9 -54.7 -49.4 1965 -48.5 -49.1 -49.3 -56.2 -58.5 -61.5 -63.3 -64.2 -64.1 -61.7 -57.3 -53.9 1966 -49.0 -50.8 -49.8 -57.0 -60.2 -63.6 -63.0 -66.4 -65.1 -62.2 -56.7 -49.2 1967 -49.2 -53.8 -51.1 -58.3 -59.5 -62.7 -63.3 -64.2 -62.5 -62.2 -55.5 -50.4 1968 -46.7 -48.6 -51.8 -54.9 -58.6 -62.3 -64.2 -64.5 -63.2 -60.3 -49.8 -48.1 1969 -47.1 -47.7 -52.7 -54.2 -59.9 -60.8 -61.8 -64.7 -62.9 -62.6 -58.8 -52.8 1970 -51.6 -50.5 -51.8 -55.0 -57.2 -61.4 -62.7 -62.6 -63.0 -60.3 -58.6 -53.2 1971 -51.1 -50.5 - - -57.8 -61.2 -63.0 -63.5 -64.9 -59.6 -58.7 -50.7 1972 -48.2 -47.7 -49.0 -54.7 -60.9 -61.1 -61.8 -62.2 -63.7 -62.4 -58.0 -53.1 1973 -50.7 -50.6 -51.5 -55.2 -58.0 -61.6 -61.3 -63.7 -61.5 -61.9 -55.6 -53.0 1974 -49.2 -51.3 -52.2 -55.3 -60.5 -60.5 -63.0 -62.6 -63.2 -60.3 -52.7 -49.1 1975 -45.5 -47.2 -49.8 -55.6 -59.3 -61.2 -62.3 -63.8 -64.2 -63.0 -56.9 -50.5 1976 -49.2 -48.7 -49.8 -57.4 -59.6 -62.0 -62.2 -62.7 -64.1 -60.9 -54.6 -50.9 1977 -49.3 -47.4 -52.2 -57.3 -57.7 -60.2 -63.9 -62.8 -63.9 -62.6 -55.3 -49.3 1978 -48.7 -49.2 -52.2 -56.0 -59.1 -63.2 -62.4 -64.7 -64.1 -61.2 -55.2 -51.2 1979 -48.5 -49.0 -50.7 -57.2 -60.8 -62.7 -63.4 -64.7 -64.1 -61.5 -58.7 -47.7 1980 -49.2 -48.1 -48.1 -52.6 -57.9 -61.7 -63.1 -62.5 -61.4 -62.6 -56.1 -50.5 1981 -52.1 -50.3 -53.1 - -59.2 -61.0 -63.2 -62.3 -62.7 - - - 1982 - - - -55.6 -59.9 -62.0 -61.8 -65.2 - - -59.0 -53.3 1983 - - - - -58.1 -59.9 -62.1 - - - -56.0 -50.5 1984 -46.8 -49.0 -49.1 - -57.4 -62.2 -63.1 -63.6 -62.8 -58.2 -56.0 -51.9 1985 -50.7 -49.5 -51.7 -54.6 -62.5 -58.6 -62.9 -63.5 -64.2 -62.4 -56.6 -55.2 1986 - -49.4 - - - - - - - -61.3 -53.1 -51.0 1987 -48.9 -47.5 -53.5 -57.8 -60.4 - -63.6 -64.6 -62.2 -61.5 -58.8 -52.3 1988 -48.5 -48.6 -50.9 -58.2 -60.7 -61.7 -62.0 -64.3 -62.5 -60.4 -55.5 -49.4 1989 -51.2 -49.8 -52.6 -55.5 -59.9 -62.8 -63.7 -63.8 -63.6 -59.5 -59.6 -50.4 1990 -50.4 -47.6 -51.7 -56.4 -60.3 -61.5 - -62.4 -60.5 -59.0 - -47.5 1991 -47.3 -47.0 - -53.6 -58.6 -58.9 -61.3 -61.0 -62.2 -58.4 -51.8 -51.0 1992 -47.2 -47.9 -54.0 -57.3 -58.6 - -63.6 -62.6 -64.3 -61.3 -56.7 -53.0 1993 -49.0 -48.1 -50.5 -54.8 -62.0 -63.1 -61.8 -62.6 -62.7 -62.7 -57.0 -52.1 1994 -50.4 -50.0 - - - -60.8 -62.1 -65.0 - -60.8 -52.5 -52.5 1995 -49.9 -48.8 - -53.8 -59.2 -60.7 -59.6 -63.1 - -62.7 -58.0 -55.2 1996 -51.2 -53.2 -52.4 -53.6 -61.6 - -61.7 -62.4 -61.2 -61.3 -57.1 -52.2 1997 -49.2 -49.7 -50.8 - - - - - -61.4 -61.6 -55.1 -51.8 1998 -48.0 -47.3 -48.0 -53.4 -54.7 -58.2 -59.2 -59.7 -59.1 -59.5 -58.3 -54.2 1999 -53.1 -51.7 -52.8 -57.9 -61.2 -60.4 -62.2 -63.3 -63.0 -62.0 -59.5 -54.8 2000 -53.8 -51.3 -54.0 -58.9 -60.7 -59.9 -61.7 -63.3 -62.1 -59.0 -56.5 -51.1 2001 -48.0 -51.3 -50.2 -56.9 -58.1 -61.5 -63.1 -62.4 -63.8 -61.1 -60.1 -55.9 2002 -51.7 -50.4 -52.6 -56.8 -58.2 -59.9 -61.9 -62.7 -59.3 -57.3 -49.0 -50.1 2003 -47.7 -51.3 -50.3 -55.6 -60.7 -62.0 -62.8 -63.1 -63.0 -62.0 -58.8 -51.7 2004 -49.5 -49.5 -52.2 -55.0 -57.7 -61.2 -63.0 -63.8 -63.2 -61.3 -55.7 -51.5 2005 -49.0 -48.9 -53.0 -54.5 -58.3 -59.4 -61.9 -63.9 -62.6 -58.0 -54.8 -53.4 2006 -49.9 -49.5 -52.4 -54.0 -59.7 -62.2 -62.9 - -62.8 -60.8 -58.9 -53.3 2007 -52.4 -49.9 -50.5 -55.1 -59.3 -61.1 -61.7 -62.9 -64.7 -60.7 -58.2 -55.1 2008 -50.2 -48.5 -50.7 -55.7 -57.5 -62.7 -62.7 -63.4 -63.3 -61.3 -58.2 -53.0 2009 -50.2 -50.6 -50.4 -56.6 -58.1 -61.4 -60.9 -62.8 -63.2 -61.2 -58.7 -52.8 2010 -47.7 -49.2 -52.2 -57.4 -59.7 -62.4 -64.1 -64.5 -63.1 -60.7 -58.6 -54.9 2011 -51.9 -50.8 -52.0 -54.2 -59.7 -61.5 -63.1 -62.6 -61.8 -60.3 -57.0 -52.6 2012 -49.7 -50.7 -50.1 -55.9 -58.4 -62.2 -64.3 -63.5 -62.9 -59.3 -55.4 -48.5 2013 -47.8 -52.0 -52.4 -57.2 -60.7 -63.8 -64.0 -62.4 -61.1 -59.9 -58.7 -48.0 2014 -48.9 - - - - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - - - - - - - - - 2017 - - -55.1 -54.9 -59.9 -61.8 -63.4 -63.6 -63.1 -59.2 -58.1 -52.4 2018 -49.8 -50.1 -54.1 -55.4 -60.2 -62.2 -61.5 -62.8 -62.8 -62.4 -58.2 -53.9 2019 -52.9 -51.4 -52.1 -55.4 -60.1 -61.7 -62.3 -63.4 -61.5 -59.2 -53.9 -51.0 2020 -49.9 -50.5 -54.7 -53.0 -58.9 -62.3 -61.3 -63.8 -63.6 -62.7 -60.5 -54.8 2021 -52.6 -50.2 -53.7 -55.9 -59.4 -61.6 -63.4 -62.3 -64.0 -61.1 -59.9 -56.6 2022 -55.3 -51.6 -52.5 -58.1 -59.5 -60.6 -61.6 -62.9 -62.9 -61.8 -56.9 -55.8 2023 -51.9 -52.1 -52.4 -55.7 -59.8 -60.7 -60.3 -63.8 -62.2 -62.5 -60.1 -56.0 2024 -53.1 -52.5 -52.6 -58.8 - - - - - - - -