Halley 12Z 50hPa temperature 1957 - - - - - - - - - -65.3 -36.2 -34.5 1958 -36.9 -42.5 -51.1 -64.6 -77.4 -83.2 -88.8 -88.6 -85.0 -72.0 -46.4 -36.0 1959 -37.2 -39.1 -49.7 -63.8 -73.9 -82.7 -87.0 -89.8 -83.0 -70.4 -57.2 -39.0 1960 -37.4 -41.9 -50.4 -63.5 -74.5 -81.7 -86.7 -89.5 -85.1 -74.4 -49.1 -37.8 1961 -37.7 -41.0 - - - - - - - - - - 1962 - - -49.6 - - - - - - - - - 1963 - - - - - - - - - - - - 1964 - - - - - - - - - - - - 1965 - - - - -75.7 -83.3 -87.5 -90.0 - -72.5 -53.8 - 1966 - -42.6 - - - -83.6 - -88.7 -84.0 -68.0 -43.0 -34.2 1967 -36.7 -41.0 -50.9 -64.4 -75.9 -84.0 -88.3 -89.2 -83.8 -61.8 -41.5 -37.4 1968 -36.6 -40.7 -49.3 -62.5 -75.9 -84.5 -88.9 -87.2 -82.8 -65.3 - -34.3 1969 -35.5 -41.1 - -65.1 -75.3 -83.3 - - -84.2 -71.1 -52.7 - 1970 - -40.4 -51.2 - - - -87.1 -89.9 -85.1 -69.3 -37.5 - 1971 - -40.1 -48.6 -60.7 -74.2 -79.6 -88.0 -88.1 -82.3 -67.9 -40.3 -35.7 1972 -36.9 -40.6 -49.3 -61.9 -74.1 -83.2 -88.6 -86.9 -83.6 -70.6 -39.0 - 1973 -38.0 -42.1 -49.8 -64.1 -77.3 -83.9 -87.0 -87.8 -82.3 -71.4 - -34.5 1974 - - - -64.6 - - -88.8 -90.7 -81.6 -70.3 - - 1975 - -42.7 -50.1 -62.6 -76.5 -81.8 - - - - - -36.2 1976 -37.8 -42.6 -52.7 -59.5 -75.3 -82.3 -87.0 -86.5 -81.6 -69.0 -47.5 -37.1 1977 - -42.2 - -62.9 - - -86.8 - -81.4 -68.8 -39.9 -34.8 1978 -36.6 -41.1 -50.2 - -73.6 - -86.9 - -80.5 -67.2 -38.8 -37.6 1979 -38.7 -41.9 - - -73.1 -81.7 - - -82.1 -64.3 -46.4 -37.9 1980 -37.6 -41.2 -49.3 -59.9 -72.0 -79.6 - -84.9 -82.1 -72.9 -54.4 -35.2 1981 - -42.9 -51.8 -63.3 -71.6 - - - - - - - 1982 - - -52.3 -62.6 -72.6 - - - -81.1 -67.7 -45.3 -37.1 1983 -36.7 -41.4 -49.4 -61.6 -73.2 - - - -81.6 -73.5 -45.1 -35.3 1984 - -41.8 -49.9 -61.9 - - - - -82.5 -71.2 -47.8 -38.6 1985 -38.4 -41.8 -50.8 -60.1 -73.0 -82.0 -85.5 -85.7 -80.2 -73.4 -54.6 -35.2 1986 -38.0 -42.3 -50.6 -62.8 -73.6 -82.1 -86.3 -83.8 -82.1 -65.9 -45.4 -36.0 1987 -38.7 -42.1 -50.6 -62.2 -71.9 -82.9 -86.6 -86.3 -84.8 -78.3 -65.2 -38.0 1988 -37.9 -41.9 -51.7 -62.3 -73.3 -83.8 -87.5 -87.4 -80.9 -68.8 -48.2 -36.5 1989 -39.0 -43.3 -52.0 -63.1 -73.6 -82.3 -86.0 -87.0 -83.7 -77.8 -48.8 -36.5 1990 -37.2 -41.6 -50.8 -63.4 -76.5 -84.8 -87.1 -87.1 -84.6 -72.7 -57.7 -42.5 1991 -38.3 -42.9 -50.2 -63.6 -74.5 -81.9 -85.1 -87.3 -84.5 -73.2 -40.8 -36.4 1992 - -42.5 -50.7 -63.0 -74.9 -83.0 -85.7 -86.9 -84.0 -70.0 -46.8 -37.6 1993 -38.1 -41.1 -50.2 -62.8 -74.4 -83.5 -87.8 -87.7 -82.7 -77.5 -58.3 -34.8 1994 -38.2 -43.8 -51.9 -63.0 -72.0 -83.5 - - -86.0 -76.3 -55.2 -34.8 1995 -38.8 -42.2 -51.8 -63.6 -74.0 - - - -84.6 -77.7 -60.9 -38.5 1996 -38.3 -43.7 -52.3 -64.8 - - - -88.8 -85.3 -77.6 -65.2 -41.4 1997 -38.2 -42.0 -51.3 -65.1 - -82.1 -87.1 - -82.6 -79.7 - -37.5 1998 -38.5 -41.7 - - - - - -87.8 -85.9 -79.3 -59.9 -40.9 1999 -38.2 -43.7 -51.3 -61.5 - - - - -83.4 -79.6 -62.8 -39.5 2000 -36.9 -43.5 -53.1 -62.0 -74.3 -84.2 -88.4 -88.1 -84.3 -76.5 -39.1 -37.5 2001 -38.7 -44.5 -52.1 -63.4 -75.9 -84.0 -86.5 -87.5 -85.6 -79.4 -56.8 -38.6 2002 -38.7 -43.2 -52.5 -61.0 -74.9 -81.5 -85.2 -88.7 -75.7 -62.6 -42.0 -40.0 2003 -40.6 -44.1 -52.4 -63.0 -74.9 -84.2 -88.6 -89.4 -86.8 -71.6 -43.1 -37.3 2004 -39.4 -43.1 -52.1 -62.6 -76.8 -83.0 -86.6 -86.6 -83.8 -68.7 -49.5 -38.9 2005 -39.0 -42.9 -51.5 -63.4 -75.8 -83.9 -86.9 -88.8 -86.1 -76.2 -45.9 -37.5 2006 -39.2 -43.4 -50.5 -62.0 -73.7 -81.6 -85.6 -87.5 -86.3 -80.3 -64.0 -36.7 2007 -38.5 -41.9 -50.3 -62.7 -74.1 -81.5 - -88.9 -87.8 -73.2 -56.6 -40.2 2008 -38.3 -43.4 -51.3 -63.2 -75.6 -80.3 - - -86.8 -76.2 -60.4 -40.5 2009 -37.8 -43.5 -51.7 -64.0 -75.1 -79.9 - - -84.8 -74.6 -57.9 -36.3 2010 -38.2 -43.4 -52.7 -63.6 -76.0 -82.2 - - -84.1 -73.9 -56.1 -40.7 2011 -39.5 -43.8 -51.7 -63.5 -74.4 -82.6 - - -86.4 -79.0 -63.9 -37.9 2012 -37.0 -43.3 -51.8 -62.4 -73.6 -82.8 - - -84.1 -69.3 -40.5 -38.3 2013 -39.5 -43.1 -51.8 -63.9 -75.0 - - - -85.1 -71.4 -35.5 -37.6 2014 -38.9 -42.1 -51.9 -62.2 -75.1 -81.4 - - - -75.7 -57.1 -37.1 2015 -38.1 -43.3 -52.4 -63.4 -75.9 -81.6 - - -84.4 -80.6 -63.6 -41.4 2016 -37.5 -43.2 -51.9 -64.5 -76.1 -79.7 - -87.3 -84.7 -74.9 -51.8 -37.1 2017 -38.7 -41.5 - - - - - - - - - -37.5 2018 -38.3 -42.5 - - - - - - - - - -38.9 2019 -38.4 -41.3 - - - - - - - - - -39.3 2020 -39.2 - - - - - - - - - - - 2021 - - - - - - - - - - - -41.3 2022 -38.8 - - - - - - - - - - -39.3 2023 -39.2 - - - - - - - - - - -41.4 2024 -39.6 - - - - - - - - - - -