Davis 12Z 50hPa temperature 1971 - - - - - - - - - -56.0 -41.1 -40.5 1972 -40.2 -41.8 -48.7 - - - - - - - - -38.3 1973 -39.0 -43.2 -49.1 - - - - - - -63.0 - - 1974 - -42.3 - - - - - - - -50.6 -34.6 -37.8 1975 -39.6 -42.6 -49.7 - - - - - - - -44.8 -38.2 1976 - -42.1 -46.8 - - - - - - -62.3 -38.1 -39.7 1977 -40.2 -42.8 -49.3 - - - - - - -46.3 -36.1 -37.4 1978 -37.4 - - - - - - - - - - - 1979 - - - - - - - - - - - - 1980 - - - - - - - - - - - - 1981 - - - - - - - - - - - - 1982 - - - - - - - - - - - - 1983 - - - - - - - - - - - - 1984 - - - - - - - - - - - - 1985 - - - - - - - - - - - - 1986 - - - - - - - - - - - - 1987 - - - - - - - - - - - - 1988 - - - - - - - - - - - - 1989 - - -49.8 -58.7 -66.3 -77.2 -82.4 -84.3 -77.0 -59.7 -46.2 -38.7 1990 -40.1 -43.6 -50.4 -58.7 -64.6 -77.8 -80.5 -80.9 -75.6 -61.2 -47.0 -39.3 1991 -39.0 -43.7 -48.6 -55.8 -67.8 -76.7 -82.0 -78.4 -70.0 -44.3 -37.0 -39.0 1992 -39.3 -44.5 -50.4 -59.4 -67.6 -68.9 -77.2 -78.9 -70.8 -61.7 -45.1 -38.2 1993 -39.9 -42.2 -46.3 -58.4 -66.0 - -80.3 -81.2 -73.5 -55.6 -40.5 -36.9 1994 -39.5 -42.7 -49.8 -59.0 -63.3 - -82.0 -81.0 -79.1 -53.5 -34.2 -36.0 1995 -39.4 -43.8 -50.3 -57.6 -69.4 -78.1 -81.8 -79.6 -67.7 -67.4 -39.8 -39.4 1996 -39.8 -43.2 -49.9 -59.2 -71.0 -73.6 -80.2 -77.8 -66.7 -71.6 -52.8 -38.4 1997 -39.6 -44.0 -49.9 -60.1 -68.3 -79.2 -82.8 -76.4 -68.9 -66.4 -37.0 -40.2 1998 -40.3 -43.0 -50.9 -58.8 -69.1 -71.0 -82.3 -83.1 -75.6 -67.4 -52.7 -41.0 1999 -41.5 -44.6 -51.5 -59.6 -69.8 -78.4 -83.0 -82.2 -72.8 -63.3 -53.6 -40.9 2000 -41.2 -43.1 -50.1 -60.3 -70.3 -79.4 -82.2 -80.7 -67.6 -44.1 -45.3 -40.6 2001 -40.7 -45.4 -49.4 -60.0 -65.9 -70.9 -83.8 -82.8 -78.2 -68.9 -60.5 -40.1 2002 -40.5 -43.5 -49.1 -58.2 -64.1 -70.5 -78.4 -77.9 -55.0 -48.7 -40.1 -40.8 2003 -41.9 -44.7 -50.1 -60.1 -70.9 -78.0 -83.3 -81.5 -75.0 -66.2 -44.6 -39.9 2004 -41.3 -45.0 -48.6 -57.2 -65.8 -77.5 - - -68.7 -55.6 -43.5 - 2005 - - - - - - - - - - -42.8 -41.4 2006 -40.2 -43.5 - - - - - - - - -53.2 -35.5 2007 -40.1 -42.4 -50.0 -59.1 -70.1 -76.0 -84.5 -81.4 -69.1 -62.5 -48.4 -42.3 2008 -39.9 -43.0 - - - - - - - - - -40.7 2009 -40.8 -45.1 - - - - - - - - -36.2 -36.7 2010 -39.8 -44.3 -49.5 -58.4 -70.7 -78.8 -81.2 -81.0 -76.6 -67.8 -54.0 -43.5 2011 -41.7 -44.5 -49.8 -58.9 -69.6 -81.0 -84.7 -81.3 -77.0 -57.2 -43.2 -40.3 2012 -38.9 -43.6 -48.8 -60.3 -69.8 -78.4 -81.2 -75.5 -65.7 -45.8 - -39.9 2013 -40.7 - - - - - - - - - -45.3 -40.3 2014 -40.7 -43.5 -50.0 -58.7 -70.0 -76.9 -81.8 -80.5 -75.6 -62.7 -41.7 -39.3 2015 -39.8 - -51.9 -59.9 -69.6 -78.0 -82.9 -83.9 -78.5 -73.7 -46.4 -42.7 2016 -39.6 -43.8 - - - - - - - - -37.2 -38.8 2017 -40.6 -44.0 -51.1 -61.3 -70.4 -77.8 -82.7 -78.6 -63.7 -54.4 -50.0 -39.4 2018 -41.0 -45.0 -51.4 -56.8 -69.2 -79.2 -84.4 -83.4 -78.3 -63.6 -52.1 -38.9 2019 -41.1 -45.7 -49.8 -58.6 -69.5 -78.5 -77.9 -73.5 -42.1 -47.7 -40.7 -40.6 2020 -41.2 -42.6 -49.7 -57.3 -67.0 -80.8 -80.9 -74.9 -74.5 -74.5 -65.1 -44.1 2021 -40.2 -42.9 -51.3 -58.2 -72.8 -78.7 -83.3 -81.8 -77.4 -68.6 -55.1 -43.1 2022 -40.6 -43.2 -50.3 -60.5 -70.2 -77.8 -83.6 -83.7 -77.4 -70.6 -50.3 -39.9 2023 -40.6 -44.6 -52.5 -60.0 -70.8 -79.0 -83.3 -81.2 -71.9 -67.3 -60.8 -40.9 2024 -40.6 -45.0 -51.3 -60.6 - - - - - - - -