Casey 00Z 30hPa temperature 1957 - - - -57.7 -58.5 - - - - -39.3 -35.8 -37.1 1958 -37.6 -41.5 -47.5 -51.0 - - - - - - -32.3 -35.7 1959 -37.3 -42.8 -49.1 -53.1 -64.7 -76.5 -80.8 -78.9 -71.4 -57.1 -40.2 -38.0 1960 - -38.8 -46.6 -54.9 -64.8 -72.3 -76.2 -70.8 -62.3 -45.0 -32.7 -34.9 1961 -35.5 -41.3 -47.8 -55.5 - -69.9 - - -68.7 -52.9 -40.6 - 1962 -37.7 -41.4 -46.4 -59.2 -66.8 -73.7 -70.7 -66.2 -54.0 -36.7 -35.8 -36.2 1963 -39.1 -40.7 -47.7 -56.9 -65.0 - - -76.9 -64.4 -48.3 -30.5 -36.2 1964 -37.6 -39.9 -43.9 -55.0 -66.9 - - -65.5 -45.7 -31.3 - -37.7 1965 -37.9 -43.0 -46.3 -55.1 - - - -77.6 -67.1 -47.4 -32.4 -39.1 1966 -37.8 -42.1 -47.9 -51.0 -65.4 -61.7 - -75.5 -69.7 -51.2 -34.0 -37.2 1967 -39.1 -42.1 -47.1 -57.5 - - - - -52.5 -35.8 -38.6 -38.3 1968 - -40.1 -48.4 -55.0 - - - - -61.0 -39.3 -33.1 -36.0 1969 - - - -58.1 -61.8 -73.0 - -68.1 -66.5 -55.1 -33.2 -37.4 1970 -38.7 -40.0 - -54.6 -66.0 - - - -53.8 -38.7 -38.2 -36.3 1971 - -43.4 -48.3 -55.9 -59.7 - -79.8 -78.9 -63.9 -37.9 -38.4 -39.2 1972 -38.7 -42.6 -47.7 -57.2 -70.0 - - - -67.0 -47.7 -37.9 -38.2 1973 -38.4 -41.0 -48.1 -58.1 -62.7 - - -72.6 -53.8 -46.4 -38.7 -36.9 1974 -39.0 -41.9 -49.2 -58.5 - - - - - -49.8 - - 1975 - -41.2 -50.3 -57.3 - -76.9 - - -44.1 -56.3 -42.4 -36.8 1976 -38.4 -41.9 -46.1 -58.0 - -77.2 - -79.0 -64.5 -36.3 -35.1 -36.5 1977 - - - - - - - - - - - - 1978 -36.8 -41.8 -47.4 - - - -80.6 - -60.6 - -38.5 - 1979 -36.7 - - - - - - - - - - -36.0 1980 -38.4 - -48.5 -56.1 - - - - - -38.4 -35.2 -35.3 1981 -37.1 - - - - - - - - - -32.8 -36.5 1982 -38.3 -42.0 -47.1 - - - - - - -40.9 -35.3 -37.0 1983 -36.9 -40.7 -47.0 - - - - - -67.2 - -33.6 -36.9 1984 -38.6 -40.4 -48.5 -58.7 -65.9 -70.9 -79.0 -75.0 -58.7 -38.7 -34.3 -37.5 1985 -40.0 -42.3 -48.1 -59.7 - - - -73.0 -69.3 -52.2 - -34.9 1986 -38.8 -44.3 -49.5 -58.4 - -75.2 -77.8 -75.4 - -49.3 -34.5 -37.0 1987 -39.1 -41.8 -48.7 -59.0 -69.1 -73.3 -81.9 -78.5 -71.3 -54.0 -43.3 -35.8 1988 -38.2 -41.4 -49.3 -61.4 -68.4 -76.3 -73.8 -65.4 - -34.1 -34.1 -37.0 1989 -39.7 -43.1 -50.5 -57.4 -64.4 -74.1 -81.3 -80.3 -68.9 -45.4 -30.3 -39.0 1990 -38.3 -41.7 -49.6 -58.4 -64.9 -74.1 -78.7 -76.7 -55.6 -48.6 -37.3 -38.4 1991 -37.6 -42.5 -49.2 -53.6 -64.3 -76.9 -81.8 -74.4 -51.9 -32.4 -33.6 -37.4 1992 -38.0 -42.1 -48.0 -57.4 -63.0 -69.5 -72.1 -67.7 -52.4 -35.0 -37.0 -37.0 1993 -37.8 -41.8 -47.9 -56.8 -68.0 -78.1 -79.0 -74.1 -67.8 -39.3 -31.6 -34.4 1994 -38.3 -42.5 -48.3 -55.8 -63.7 -70.2 -80.4 -71.9 -63.3 -39.7 -34.7 -32.7 1995 -37.3 -41.5 -49.4 -56.1 -68.1 -76.6 -81.9 -79.5 -53.1 -46.5 -37.9 -34.6 1996 -38.4 -43.4 -49.1 -59.3 -69.7 -73.7 -79.1 -72.2 -50.8 -51.8 -42.8 -37.5 1997 -38.4 -43.1 -48.0 -56.6 -67.2 -76.6 -80.7 -69.7 -58.9 -46.4 -34.2 -39.2 1998 -39.0 -42.2 -49.8 -62.0 -69.5 -67.2 -79.0 -79.3 -61.8 -46.0 -40.3 -36.4 1999 -38.1 -43.1 -50.6 -56.8 -69.8 -76.2 -82.2 -78.7 -65.0 -44.6 -37.0 -34.5 2000 -38.0 -42.3 -47.9 -59.9 -69.4 -78.2 -79.1 -76.8 -57.2 -30.2 -34.6 -38.8 2001 -40.2 -45.2 -49.2 -58.2 -61.9 -68.3 -83.0 -78.7 -66.7 -39.9 -40.2 -38.2 2002 -39.2 -42.8 -49.7 -58.1 -66.4 -75.4 -79.1 -65.7 -42.3 -43.1 -38.2 -39.9 2003 -41.5 -44.4 -49.0 -59.6 -68.6 - - - -55.3 -34.8 -37.7 -39.9 2004 -40.1 -43.3 -48.5 -57.1 -63.9 - -80.0 -67.6 -52.2 -38.3 -41.0 -38.6 2005 -38.1 -42.1 -50.6 -58.1 -65.1 -73.4 -78.4 -71.0 -43.5 -36.3 -34.2 -39.0 2006 -39.5 -41.6 -48.3 -58.8 -63.8 - - - -60.8 -49.2 -40.8 -35.1 2007 -38.1 -42.7 -51.1 -59.2 -69.5 -74.4 -87.2 -73.1 -50.5 -33.0 -40.5 -36.1 2008 -38.0 -42.9 -50.5 -60.0 -63.9 -78.7 -83.6 -80.7 -66.1 -40.2 -41.2 -38.1 2009 -38.8 -44.5 -49.3 -59.5 -67.5 -78.5 -84.5 -81.4 -65.3 -40.4 -40.4 -36.8 2010 -38.8 -44.0 -47.0 -58.0 -68.8 -75.7 -77.0 -74.2 -64.4 -45.4 -40.6 -41.4 2011 -38.8 -43.3 -47.4 -57.4 -68.6 -78.9 -80.6 -82.1 -62.6 -40.3 -37.4 -32.3 2012 -37.7 -42.2 -48.1 -59.0 -68.7 -77.6 -79.7 -68.3 -48.7 -34.2 -39.9 -38.5 2013 -38.9 -42.6 -50.0 -60.0 -67.4 -78.6 -81.2 -74.3 -46.8 -32.9 -39.9 -39.5 2014 -40.1 -42.8 -49.0 -57.9 -68.6 - -73.8 -74.5 -58.7 -34.4 -38.7 -33.9 2015 -38.8 -42.3 -48.1 -58.4 -66.4 -76.5 -81.1 -81.2 -73.3 -55.0 -34.3 -35.5 2016 -37.1 -42.4 -50.5 -59.5 -65.2 -76.5 -82.5 -75.5 -53.3 -40.1 -39.6 -38.3 2017 -39.7 -43.7 -49.7 -60.3 -69.0 -75.9 -79.6 -67.6 -49.8 -44.0 -35.8 -38.9 2018 -39.4 -44.3 -49.9 -56.9 -64.9 -78.1 -82.3 -77.4 -67.1 -40.5 -36.0 -36.9 2019 -38.0 -43.4 -50.3 -57.6 -70.6 -76.1 -77.5 -60.7 -29.1 -40.3 -41.7 -40.0 2020 -39.8 -43.4 -50.0 -57.5 -64.8 -77.5 -80.2 -66.0 -66.8 -53.4 -47.3 -34.4 2021 -38.9 -42.1 -50.4 -57.2 -71.4 -79.4 -83.6 -78.9 -66.9 -51.5 -38.6 -37.8 2022 -38.8 -42.8 -49.2 -59.7 -68.3 -74.8 -82.0 -80.5 -67.0 -54.2 -40.2 -34.8 2023 -39.0 -44.0 -53.7 -60.3 -71.2 -77.7 -79.6 -76.3 -60.7 -41.1 -43.1 -38.6 2024 -39.1 -43.7 -49.3 -61.3 - - - - - - - -