Byrd 12Z temperature 1980 - - -25.6 -21.6 -26.1 -34.7 -26.5 -30.1 -35.3 -29.4 -25.1 -16.3 1981 - -26.0 -25.3 -31.4 -32.0 -30.1 -35.8 -43.9 -36.2 -31.2 -25.9 -16.7 1982 -15.4 -21.9 -31.2 -38.5 -35.6 -30.7 -37.1 -32.1 -36.7 -31.9 -23.4 -14.4 1983 -16.4 -29.4 -28.9 -28.1 -29.8 -39.2 -40.2 -42.5 -34.2 -32.8 -25.3 -17.3 1984 -17.3 -21.2 -21.9 -27.6 -30.0 -29.0 -40.5 -40.0 -37.4 -26.7 -22.5 -14.6 1985 -15.0 -25.3 -28.3 -29.1 - -30.7 -40.6 -38.6 -33.6 -30.9 -17.7 -17.8 1986 -16.9 -22.3 -28.7 -27.3 -27.4 -37.0 -37.9 -41.5 -45.5 -31.0 -22.6 -16.4 1987 -15.6 -21.0 -34.3 -33.3 -31.4 -29.0 -27.6 -32.6 -35.1 -31.3 -26.4 -16.6 1988 -15.2 -23.0 - - - - - - - - - - 1989 - - - - - - - - - - - - 1990 - -22.7 -33.6 -29.9 -27.8 -38.5 -37.0 -40.4 -30.5 - - - 1991 - -17.4 -29.1 -28.2 -30.5 -32.9 -34.9 -37.0 -30.8 -27.2 -22.6 -12.8 1992 -17.0 -24.5 -23.0 -29.6 -23.7 - - - - - - - 1993 - - - - - - - - - - - - 1994 - -25.0 -30.6 -26.2 -30.4 -31.9 -32.8 -38.1 -37.3 -27.1 -19.4 -14.1 1995 -16.5 -18.4 -31.0 -29.7 -35.3 -26.4 -35.5 -34.4 -32.9 -32.7 -23.5 -16.3 1996 -16.4 -23.6 -28.1 - - - - - - - - - 1997 - -22.3 -28.8 -32.6 -33.6 -28.3 -34.5 -38.2 -33.9 -25.7 -20.4 -13.2 1998 -16.0 -17.0 -28.7 -33.9 -23.9 -25.6 -39.9 -34.1 -36.2 -34.8 -25.0 -17.5 1999 -13.4 -23.4 -27.3 -33.2 -32.8 - - - - - - -16.5 2000 -19.2 -21.5 -23.6 -34.2 -29.7 -29.8 -29.0 -34.0 - - - - 2001 - - - - - - - - - - - - 2002 -15.5 -22.7 -19.8 - - - - - - - - -17.2 2003 -14.3 -22.7 -23.3 -28.5 -31.8 -33.3 -36.0 -37.0 - - -23.3 -15.3 2004 -16.4 -23.1 -28.9 -30.3 - - - - - - - -16.8 2005 -11.8 -25.1 -29.0 -31.8 -30.2 - - - - - - - 2006 - -17.8 -30.9 -36.1 -37.4 -31.2 -36.5 -29.6 - -28.5 -21.9 -16.8 2007 -12.4 -22.2 -23.8 -26.6 -27.5 -29.6 -28.9 -36.5 - - -20.9 -16.6 2008 -14.5 -22.2 -23.8 -28.8 -32.3 - - - - -26.7 -24.4 -19.6 2009 -16.7 -23.0 -25.2 -28.1 -32.9 -33.9 -26.9 -33.3 -36.6 -33.4 -19.4 -14.6 2010 -17.4 -21.0 -22.8 -30.1 -35.9 -36.2 -41.0 -31.9 -33.6 -30.2 -25.1 -17.4 2011 -17.9 -23.7 -26.6 -30.3 -31.4 -34.1 -23.4 -30.1 -39.2 -27.9 -22.2 -16.5 2012 -17.5 -20.7 -25.1 -29.7 -26.5 -37.7 -36.9 -35.8 -33.9 -28.8 -23.8 -13.8 2013 -14.3 -21.7 -22.7 -36.8 -33.0 -39.7 -38.1 -33.1 -34.2 -30.7 -26.1 -14.9 2014 -15.5 -23.3 -28.7 -31.8 -26.5 -32.9 -38.2 -29.5 -26.2 -26.7 -27.3 -20.3 2015 -14.9 -18.9 -28.7 -36.3 -28.4 -36.2 -37.5 -42.0 -32.0 -27.5 -25.6 -17.5 2016 -14.3 -24.8 -31.2 -30.7 -29.7 -34.1 -31.6 -33.5 -38.1 -25.9 -23.1 -14.5 2017 -16.8 -19.2 -24.8 -24.3 -28.2 -30.9 -39.4 -34.7 -43.4 -29.8 -24.8 -18.6 2018 -17.5 -22.0 -27.2 -29.9 -35.4 -35.9 -32.2 -40.3 -35.4 -25.3 -22.3 -17.0 2019 -15.2 -19.7 -26.4 -31.0 -33.6 -29.6 -32.3 -31.5 -30.9 -31.5 -22.8 -14.9 2020 -17.1 -17.7 -29.2 -31.7 -26.0 -35.3 -30.1 -35.7 -34.5 -31.9 -26.4 -18.7 2021 -17.1 -24.0 -31.5 -35.5 -30.4 -29.2 -30.5 -39.4 -36.6 -30.9 -22.5 -18.6 2022 -18.2 -20.9 -26.7 -29.1 -29.1 -35.3 -30.4 -32.3 -33.0 -34.1 -25.9 -15.0 2023 -18.3 -21.2 -26.8 -31.2 -35.4 -32.4 -29.5 -45.6 -27.9 -33.7 -24.3 -16.7 2024 -18.5 -24.1 -24.1 -30.6 -26.6 -26.8 -37.7 -34.1 -38.4 -30.5 -24.4 -