Byrd 00Z temperature 1980 - - -24.0 -22.0 -26.6 -35.2 -25.4 -27.7 -33.8 -25.7 -19.9 -13.2 1981 - -20.7 -23.2 -31.4 -32.4 -30.3 -35.7 -41.4 -34.9 -26.9 -20.5 -13.0 1982 -11.8 -17.9 -28.1 -38.7 -35.9 -30.7 -36.2 -31.3 -35.7 -27.8 -20.0 -12.1 1983 -13.7 -24.0 -26.4 -28.6 -29.7 -40.2 -39.7 - -34.0 -29.0 -20.2 -14.4 1984 -13.2 -17.2 -21.2 -27.8 -29.1 -29.3 -40.2 -38.6 -36.2 -23.9 -17.9 -11.0 1985 -11.9 -20.7 -25.9 -27.5 - -30.2 -41.4 -39.1 -33.3 -27.7 -14.7 -13.8 1986 -12.5 -17.4 -26.5 -27.6 -26.4 -36.8 -36.1 -40.1 -43.7 -28.0 -18.7 -12.2 1987 -11.7 -17.4 -31.5 -32.1 -31.3 -29.2 -29.0 -31.2 -33.8 -25.7 -20.4 -11.7 1988 -11.8 -18.5 - - - - - - - - - - 1989 - - - - - - - - - - - - 1990 - -17.3 -30.6 -29.7 -27.2 -38.5 -36.0 -40.8 -30.1 - - - 1991 - -14.2 -28.4 -28.5 -30.2 -31.0 -36.7 -38.4 -31.2 -24.7 -18.2 -9.4 1992 -12.0 -20.6 -22.3 -28.1 -24.5 - - - - - - - 1993 - - - - - - - - - - - - 1994 - -18.8 -28.6 -25.3 -29.2 -31.2 -32.9 -39.4 -35.9 -23.7 -14.4 -9.7 1995 -11.8 -14.7 -27.8 -28.9 -35.7 -26.6 -34.4 -34.7 -32.5 -29.4 -19.4 -11.7 1996 -11.2 -17.8 -25.5 - - - - - - - - - 1997 - -17.6 -24.9 -33.0 -34.0 -28.6 -34.7 -39.6 -33.2 -21.9 -16.0 -8.4 1998 -10.8 -14.1 -25.0 -32.3 -23.7 -25.2 -40.2 -35.3 -35.4 -29.0 -20.4 -11.9 1999 -11.8 -21.0 -25.1 -34.3 -32.4 - - - - - - -12.3 2000 -14.5 -16.7 -20.2 -33.2 -29.1 -30.7 -29.3 -34.2 - - - - 2001 - - - - - - - - - - - - 2002 -11.4 -18.0 -19.4 -30.8 - - - - - - - -11.8 2003 -10.3 -17.1 -21.3 -28.5 -30.6 -33.3 -35.6 -35.8 - - -18.3 -11.0 2004 -11.1 -18.8 -27.4 -29.6 - - - - - - - -12.0 2005 -7.4 -20.3 -27.3 -31.9 -29.7 - - - - - - - 2006 - -13.0 -27.0 -35.4 -36.5 -32.2 -36.5 -29.2 - -24.0 -16.3 -12.0 2007 -8.4 -17.3 -21.2 -25.0 -26.8 -29.1 -29.9 -37.6 - - -15.8 -11.9 2008 -10.3 -17.3 -21.9 -29.2 -32.4 - - - - -23.1 -20.2 -12.6 2009 -11.9 -18.5 -23.6 -27.9 -32.8 -33.8 -26.8 -33.4 -35.4 -28.7 -14.4 -10.1 2010 -11.0 -16.3 -20.9 -29.6 -35.0 -35.5 -40.2 -30.6 -33.4 -26.3 -20.1 -12.5 2011 -12.8 -19.6 -25.2 -30.1 -32.3 -33.8 -23.2 -28.4 -37.7 -24.4 -17.7 -13.1 2012 -13.6 -17.0 -22.9 -29.4 -27.3 -37.2 -37.1 -36.8 -33.1 -25.1 -20.3 -10.0 2013 -10.7 -17.8 -21.1 -36.2 -33.6 -40.4 -38.4 -34.6 -33.7 -26.3 -21.1 -11.9 2014 -12.6 -19.2 -27.0 -31.1 -26.7 -33.0 -38.6 -29.8 -25.4 -23.5 -22.0 -15.7 2015 -11.7 -15.6 -26.3 -37.3 -26.8 -35.8 -38.4 -43.0 -32.5 -24.5 -20.7 -13.4 2016 -10.2 -20.9 -29.3 -31.9 -29.9 -34.6 -31.7 -34.5 -36.9 -23.8 -18.8 -11.4 2017 -13.3 -15.7 -22.8 -24.0 -27.7 -32.4 -38.8 -35.0 -42.0 -26.8 -20.5 -13.8 2018 -13.4 -18.4 -24.5 -30.3 -33.8 -36.6 -32.6 -40.0 -36.5 -22.7 -18.2 -13.0 2019 -12.0 -16.4 -25.1 -31.0 -33.9 -30.1 -31.4 -31.0 -30.1 -27.7 -18.9 -11.4 2020 -13.4 -14.2 -27.5 -30.7 -26.3 -35.4 -30.5 -36.4 -32.3 -27.6 -21.5 -14.2 2021 -14.3 -19.6 -28.8 -35.1 -30.7 -30.0 -30.5 -40.1 -34.0 -27.1 -18.8 -14.5 2022 -14.1 -17.2 -24.1 -29.1 -28.5 -34.9 -30.7 -31.8 -32.2 -29.5 -21.3 -11.4 2023 -13.7 -16.9 -25.4 -31.5 -35.0 -32.9 -29.5 -45.8 -25.3 -28.9 -19.9 -13.4 2024 -14.1 -20.3 -22.7 -31.3 -25.4 -26.0 -37.4 -35.0 -38.2 -27.1 -21.3 -