Halley 12Z 100hPa temperature 1957 - - - -58.0 -67.7 - - - -79.2 -70.6 -46.9 -38.7 1958 -39.6 -43.4 -49.5 -58.6 -69.0 -75.8 -81.0 -83.2 -82.2 -73.9 -54.7 -40.3 1959 -40.6 -41.2 -49.3 -58.1 -66.5 -74.4 -79.8 -83.3 -80.7 -72.6 -62.9 -44.2 1960 -41.0 -43.6 -49.1 -59.7 -66.7 -75.2 -80.8 -84.0 -82.1 -74.5 -56.4 -40.1 1961 -40.9 -43.8 -49.3 -56.0 -66.8 -75.4 -78.9 -83.7 -81.8 -73.0 -59.3 -47.1 1962 -42.3 -45.1 -50.0 -57.1 -67.3 -75.1 -79.1 -82.8 -83.2 -71.5 -54.2 -39.4 1963 -41.0 -42.8 -47.2 -59.9 -69.4 -76.1 -81.8 - -81.7 -73.9 -53.1 -40.4 1964 -41.2 -44.1 -49.6 -59.3 -68.0 -79.3 -81.5 -85.2 -81.5 -72.6 -47.0 -40.2 1965 -41.7 -44.4 -49.4 -58.3 -69.7 -75.1 -81.0 -84.3 -81.7 -75.0 -59.2 -42.8 1966 -39.5 -42.9 -49.2 -57.0 -63.0 -74.7 -81.2 -83.7 -80.6 -72.2 -54.7 -39.6 1967 -41.5 -43.2 -49.1 -58.4 -69.4 -75.9 -80.9 -83.3 -82.2 -68.1 -51.5 -41.6 1968 -40.5 -42.9 -48.8 -57.9 -70.0 -76.8 -81.5 -83.6 -82.3 -71.9 -48.2 -39.2 1969 -39.5 -42.1 -47.5 -59.8 -68.0 -75.4 -79.9 -84.4 -81.9 -75.5 -59.6 -43.4 1970 -41.4 -42.8 -50.1 -59.4 -68.2 -74.1 -80.5 -84.1 -81.0 -73.4 -51.1 -42.4 1971 -39.8 -41.8 -48.1 -56.0 -67.3 -71.3 -81.1 -82.8 -80.3 -72.5 -49.8 -41.9 1972 -40.5 -42.8 -47.5 -56.6 -67.0 -74.3 -80.5 -81.9 -80.1 -70.7 -48.2 -40.2 1973 -40.2 -42.1 -48.2 -58.4 -69.5 -75.2 -78.8 -82.6 -80.6 -72.6 -54.4 -38.7 1974 -40.5 -43.1 -49.3 -57.3 -65.8 -73.4 -80.5 -85.3 -80.2 -73.0 -55.8 -38.5 1975 -40.6 -44.0 -48.1 -56.7 -68.3 -74.5 - - - - - -41.2 1976 -40.6 -43.7 -50.1 -55.2 -67.9 -74.9 -80.1 -82.5 -80.1 -70.8 -55.3 -41.8 1977 -41.7 -42.8 -49.7 -58.9 - -74.7 -79.5 -82.5 -80.8 -74.0 -51.0 -38.9 1978 -40.2 -42.4 -48.4 -54.9 -66.1 -74.2 -79.9 -82.5 -78.1 -67.7 -49.1 -41.3 1979 -41.4 -43.1 -47.9 -57.4 -66.7 -75.7 -79.6 -83.0 -81.8 -69.6 -54.5 -40.4 1980 -40.2 -42.2 -47.9 -55.6 -64.7 -72.0 -79.2 -80.7 -80.0 -74.8 -57.8 -39.0 1981 - -44.0 -50.0 -57.9 -66.4 -74.1 -80.9 - - - - - 1982 - - -49.0 -58.5 -66.3 -75.5 -80.3 -81.0 -80.4 -73.4 -60.0 -44.8 1983 -40.8 -43.7 -48.6 -56.8 -67.6 -76.0 -80.1 -81.8 -80.0 -75.6 -56.0 -41.0 1984 - -44.4 -49.2 -57.9 - - - - -81.2 -75.3 -61.7 -44.6 1985 -42.4 -43.8 -49.0 -55.5 -66.7 -73.8 -78.9 -82.2 -78.6 -75.2 -65.7 -41.7 1986 -42.7 -45.4 -49.0 -57.7 -66.3 -74.0 -79.1 -79.8 -80.3 -71.9 -59.6 -46.5 1987 -42.8 -45.3 -48.9 -57.7 -64.8 -75.8 -79.9 -81.7 -82.7 -79.0 -72.1 -48.9 1988 -41.9 -43.5 -49.8 -57.3 -65.8 -75.9 -80.4 -82.8 -79.8 -74.3 -59.7 -40.4 1989 -42.6 -44.2 -49.5 -58.0 -66.2 -74.6 -79.5 -82.3 -81.6 -78.7 -61.8 -47.1 1990 -42.4 -43.2 -48.8 -58.2 -68.9 -76.8 -80.4 -82.4 -82.0 -77.0 -68.3 -55.6 1991 -43.4 -45.7 -49.3 -58.0 -67.4 -74.6 -78.7 -82.1 -81.4 -76.1 -56.5 -42.6 1992 - -44.2 -50.1 -58.1 -68.1 -75.7 -79.6 -82.2 -82.3 -76.6 -62.4 -46.9 1993 -42.8 -44.1 -49.5 -59.0 -68.7 -76.4 -81.8 -83.3 -81.6 -80.2 -71.5 -45.6 1994 -43.4 -45.0 -50.2 -56.4 -68.6 -75.6 -81.5 -83.2 -83.8 -78.3 -66.3 -38.1 1995 -42.3 -43.6 -49.9 -58.6 -68.0 -75.9 -82.5 -82.1 -82.0 -79.8 -73.0 -49.6 1996 -42.7 -45.7 -50.9 -59.4 -69.1 -77.8 -80.5 -83.5 -81.4 -77.6 -72.5 -55.3 1997 -42.0 -43.8 -49.2 -58.1 -67.0 -74.2 -80.0 -81.9 -80.9 -78.9 -66.9 -43.9 1998 -43.5 -44.7 -48.7 -57.5 -67.4 -75.4 -82.0 -83.1 -83.1 -78.8 -70.2 -52.4 1999 -44.4 -46.0 -49.9 -56.7 -64.8 -76.0 -80.9 -82.5 -80.7 -79.0 -71.9 -53.7 2000 -42.6 -45.7 -51.0 -57.6 -67.2 -76.6 -81.1 -82.8 -81.0 -78.4 -58.8 -42.5 2001 -43.2 -45.8 -50.0 -57.3 -68.9 -75.8 -80.2 -82.7 -82.6 -80.0 -69.4 -53.3 2002 -44.3 -44.7 -50.6 -56.1 -67.2 -74.1 -78.6 -82.6 -75.6 -69.9 -49.8 -42.8 2003 -44.4 -45.2 -49.0 -57.3 -68.2 -76.0 -81.4 -84.0 -83.4 -77.1 -61.4 -45.0 2004 -43.2 -43.9 -50.0 -57.0 -68.1 -75.3 -80.2 -83.0 -82.7 -74.3 -65.0 -50.4 2005 -42.8 -44.7 -50.0 -58.1 -68.3 -76.6 -80.3 -83.8 -82.4 -78.3 -59.2 -45.7 2006 -42.5 -44.9 -49.4 -57.7 -66.8 -73.9 -79.2 -81.7 -83.6 -79.9 -73.3 -51.7 2007 -44.2 -44.6 -49.3 -57.6 -66.8 -75.5 -80.2 -82.3 -83.5 -77.0 -66.9 -49.8 2008 -43.1 -45.3 -49.3 -58.3 -67.9 -73.8 -80.9 -82.9 -83.6 -78.7 -70.8 -56.3 2009 -44.2 -45.7 -49.6 -58.3 -67.6 -74.3 -78.5 -83.3 -82.6 -76.9 -70.0 -49.5 2010 -43.8 -45.4 -50.4 -58.6 -69.1 -77.1 -81.9 -83.7 -82.4 -78.3 -69.3 -55.6 2011 -44.3 -45.3 -49.9 -58.5 -67.1 -74.8 -80.5 -82.0 -82.2 -78.5 -72.3 -51.3 2012 -43.5 -45.6 -50.1 -56.7 -67.4 -75.7 -80.5 -83.8 -82.6 -75.4 -55.2 -42.4 2013 -42.8 -44.4 -48.9 -58.4 -67.8 -75.2 -79.7 -84.2 -83.3 -74.8 -50.9 -41.9 2014 -42.9 -44.7 -50.0 -57.8 -67.5 -74.8 -80.5 - - -77.4 -68.1 -44.9 2015 -42.5 -44.9 -50.0 -58.1 -68.3 -75.7 -82.1 -83.0 -83.1 -80.6 -73.3 -55.7 2016 -42.8 -45.5 -49.9 -59.1 -68.1 -74.0 -80.4 -82.5 -80.8 -76.3 -61.7 -41.2 2017 -42.9 -43.8 - - - - - - - - - -46.0 2018 -42.6 -44.2 - - - - - - - - - -46.2 2019 -42.5 -43.5 - - - - - - - - - -44.3 2020 -42.4 - - - - - - - - - - - 2021 - - - - - - - - - - - -54.1 2022 -44.0 - - - - - - - - - - -50.7 2023 -43.7 - - - - - - - - - - -54.7 2024 -44.5 - - - - - - - - - - -