Hi_Priestley_Gl 00Z temperature 1989 - -29.3 -35.8 -37.8 - - - - -40.8 -38.2 -27.3 -17.2 1990 -20.0 - - - - - - - - - -27.6 -19.2 1991 -19.5 -25.1 -37.3 -39.4 - -40.1 - - -41.7 -35.4 -28.0 -16.5 1992 -18.8 -26.5 -33.8 -42.3 - -41.8 - -38.9 - -38.1 - - 1993 - - - - - - - - - - -27.5 -21.0 1994 -20.3 -29.8 -41.0 -39.7 - - - - -40.8 -36.8 - - 1995 - - - - - - - - - - - - 1996 -21.0 -26.9 -34.2 -41.2 - - - - - -41.9 -26.6 -18.8 1997 -20.4 -28.4 -36.8 - - - - - - - - -20.1 1998 -21.0 -26.5 -40.0 - - - - - - -37.4 -29.9 -19.9 1999 -19.9 -27.8 -37.7 -42.7 -47.2 -42.5 -43.1 -47.2 -44.2 -37.2 -25.9 -20.6 2000 -21.4 -28.6 -37.3 -45.7 -42.3 -46.0 -45.7 -46.4 -39.3 -36.0 -25.3 -19.4 2001 -19.2 -27.7 -38.2 -43.1 - - - - - -39.0 -27.1 -19.1 2002 -17.3 -29.1 -36.1 -45.8 -43.1 -41.7 -48.1 -51.1 -41.8 -35.3 -26.9 -18.8 2003 -17.4 -27.0 -38.3 -44.0 -44.6 -46.5 -46.7 -46.2 -40.8 -38.6 -27.2 -18.3 2004 - - - - - - - - - - - -18.1 2005 -18.7 -27.5 -37.2 -45.5 -46.5 -43.3 -45.6 -44.1 -43.8 -33.3 -27.2 -16.0 2006 -18.9 -27.8 -38.9 -43.5 - - - - - -37.0 -26.1 -20.8 2007 -17.3 -27.9 -36.0 -42.6 -42.5 -46.0 -45.4 -49.5 -45.8 -35.6 -27.1 -20.0 2008 -19.8 -30.1 -36.6 -42.2 - - - - -44.1 -36.2 -26.6 -19.3 2009 -19.4 -28.3 -38.4 -45.5 -43.1 -44.8 -41.9 -42.6 -45.5 -39.5 -25.2 -19.3 2010 -17.3 -26.0 -32.6 -44.6 -46.2 -49.9 -51.1 -46.6 -46.4 -37.4 -26.3 -18.1 2011 -19.0 -25.0 -36.2 -38.3 -43.7 -42.2 -44.6 -42.3 -40.0 -34.9 -24.3 -18.4 2012 -19.0 -26.2 -37.7 -46.7 - - - - - -37.9 -26.5 -17.0 2013 -18.1 -27.8 -36.6 -44.6 -44.3 -45.2 -48.4 - - -35.3 - - 2014 - -27.4 -39.1 -43.8 -43.0 -46.9 -46.2 -46.4 - -33.9 -26.9 -20.4 2015 -18.5 -25.8 -36.2 -44.2 -43.7 -46.2 - - -46.6 -35.0 -28.8 -18.0 2016 -18.3 -27.5 -37.2 -45.5 -41.1 -45.4 -45.8 - -41.4 -37.4 -23.6 -17.9 2017 -17.1 -26.0 -36.0 -44.5 - -47.2 -48.1 - - - - -18.7 2018 -18.3 -26.6 -35.4 -40.3 -47.5 - - -44.4 -44.1 -35.7 -26.1 -18.2 2019 -18.5 -27.3 -34.6 -43.7 -43.7 -46.2 -41.8 -44.3 -46.7 -37.8 -24.8 -17.4 2020 -18.4 -24.0 -34.3 -43.1 -46.2 -46.7 -42.0 - - -40.2 -28.9 -18.0 2021 -19.4 -28.2 -36.0 -44.4 -49.3 -47.2 -44.5 -41.7 -42.3 -36.5 - - 2022 -20.5 -26.3 -35.3 -43.5 -44.7 -41.6 -45.9 - - - -26.1 -19.5 2023 -19.7 -26.9 -35.6 -40.6 -45.4 - - - - - -27.5 -18.9 2024 -19.4 -27.8 -38.5 -45.0 -46.8 - -44.3 -43.5 -42.1 -35.7 -28.7 -17.9 2025 -16.9 -25.6 -37.7 -43.8 -44.3 -41.1 - - - -34.2 -25.5 -16.1 2026 - - - - - - - - - - - -