Hi_Priestley_Gl 06Z temperature 1989 - -27.4 -35.3 -37.6 - - - - -40.4 -36.5 -25.2 -15.9 1990 -17.6 - - - - - -35.6 - - - -23.3 -15.9 1991 -17.4 -23.1 -36.7 -39.4 -41.2 -39.6 - - -40.8 -33.8 -25.8 -15.4 1992 -16.9 -24.3 -34.1 -42.9 - -41.0 - -39.0 - -36.3 - - 1993 - - - - - - - - - - -25.1 -18.3 1994 -17.4 -27.5 -39.6 -40.5 - - - - -40.6 -34.7 - - 1995 - -24.5 - - - - - - - -35.6 - - 1996 -18.9 -25.1 -33.2 -40.6 - - - - - -39.1 -23.9 -17.0 1997 -18.1 -25.8 -35.9 - - - - - - - - -18.2 1998 -19.1 -24.3 -38.6 - - - - - - -36.3 -26.8 -17.7 1999 -17.4 -25.7 -36.4 -42.8 -47.1 -42.1 -43.9 -47.1 -44.1 -35.9 -24.4 -18.5 2000 -19.3 -26.4 -36.3 -46.1 -42.2 -45.6 -45.5 -46.8 -39.5 -35.6 -24.1 -17.8 2001 -17.5 -25.7 -37.3 -43.9 - - - - - -37.4 -25.9 -16.7 2002 -15.5 -26.7 -35.1 -45.5 -43.1 -41.4 -48.2 -50.8 -42.0 -35.5 -26.0 -18.1 2003 -16.2 -26.2 -38.1 -44.3 -44.6 -46.5 -46.2 -45.9 -41.1 -39.6 -26.3 -16.5 2004 - - - - - - - - - - - -15.8 2005 -16.7 -25.4 -36.4 -45.6 -46.6 -43.0 -45.7 -44.2 -44.2 -33.0 -24.6 -14.4 2006 -17.0 -25.9 -37.9 -43.5 - - - - - -36.2 -24.7 -18.6 2007 -15.4 -26.4 -35.1 -42.2 -43.1 -45.7 -45.9 -49.2 -45.5 -35.8 -26.1 -18.0 2008 -17.6 -28.3 -36.2 -42.9 - - - - -44.8 -36.0 -24.8 -17.0 2009 -17.2 -26.3 -37.2 -44.3 -43.3 -45.0 -42.2 -43.0 -45.5 -39.3 -24.6 -17.1 2010 -16.0 -24.2 -32.6 -44.8 -46.6 -49.8 -51.2 -45.7 -46.5 -37.3 -25.2 -15.9 2011 -16.7 -23.7 -35.3 -37.9 -43.9 -41.9 -44.4 -42.0 -40.2 -34.2 -23.7 -16.4 2012 -17.1 -24.6 -36.8 -45.9 - - - - - -37.5 -24.6 -15.4 2013 -15.8 -25.9 -36.9 -44.7 -44.0 -45.1 -48.6 - - -35.6 - - 2014 - -25.6 -37.8 -43.9 -42.2 -47.7 -46.6 -46.4 - -34.0 -25.0 -17.1 2015 -17.1 -24.5 -35.1 -44.5 -43.6 -46.0 - - - -35.2 -26.7 -16.3 2016 -16.1 -25.0 -36.2 -45.7 -40.8 -44.4 -45.6 - -42.8 -36.9 -22.4 -15.5 2017 -15.8 -23.9 -34.8 -44.2 -44.9 -46.4 -48.7 - - - - -17.7 2018 -16.0 -24.6 -34.3 -40.6 -47.6 - - -44.3 -43.7 -35.7 -25.4 -16.7 2019 -16.3 -25.1 -34.1 -43.5 -43.1 -46.3 -41.4 -44.3 -46.7 -37.2 -23.0 -15.9 2020 -15.9 -22.6 -33.7 -42.7 -45.5 -48.0 -42.2 - - -39.7 -27.5 -15.8 2021 -17.0 -25.9 -35.5 -44.0 -49.0 -47.4 -44.5 -42.2 -42.0 -36.2 - - 2022 -17.9 -24.0 -34.7 -43.1 -44.2 -41.5 -45.7 - - -33.3 -25.3 -17.2 2023 -17.4 -24.9 -34.3 -41.1 -45.3 - - - - - -26.5 -17.3 2024 -17.4 -26.4 -37.6 -45.4 -47.1 - -44.1 -44.6 -41.5 -35.2 -26.7 -15.8 2025 -15.8 -24.1 -36.5 -43.7 -43.8 -41.3 - - - -33.8 -24.7 -14.3 2026 - - - - - - - - - - - -