MPA 00Z 300hPa temperature 1987 - - - - - - - - - - - -47.3 1988 -47.8 -44.6 -44.1 -49.1 -49.4 -53.3 -51.6 -54.5 -52.1 -52.6 -47.7 -47.1 1989 -45.9 -44.2 -45.7 -49.7 -50.7 -52.0 -51.3 -51.7 -53.6 -50.1 -47.2 -46.4 1990 - -43.3 -46.1 -49.7 -51.4 -51.7 -51.5 -52.6 -53.1 -49.6 -49.1 -48.6 1991 -43.7 -44.8 -45.5 -48.3 -49.5 -52.6 -52.7 -52.7 -51.6 -52.3 -49.6 -48.9 1992 -44.6 -45.5 -43.7 -47.4 -51.1 -54.2 -52.3 -52.9 -52.5 -50.2 -48.5 -47.7 1993 -50.0 -43.3 -46.8 -49.7 -50.4 -52.4 -52.4 -51.7 -51.7 -50.0 -48.7 -47.4 1994 -45.5 -46.3 -45.9 -51.4 -52.4 -52.5 -53.1 -51.4 -53.5 -52.9 -49.3 -46.5 1995 -46.7 -46.3 - -46.1 -50.7 -53.2 -55.9 -55.7 - -49.2 -48.4 -45.1 1996 -47.4 -46.2 -45.2 -48.7 -48.7 -51.4 -51.7 -51.6 -51.9 -51.3 -49.5 -48.5 1997 -45.0 -47.2 -43.7 -48.0 -49.5 -52.6 -53.4 -53.7 - - - - 1998 -46.6 -45.6 -47.6 -47.7 -51.7 -52.7 -52.6 -53.5 -53.7 -50.7 -46.7 -46.2 1999 -44.5 -45.7 -46.5 -47.6 -50.5 -54.5 -53.9 -52.9 -53.6 -50.5 -47.2 -46.7 2000 -46.0 -45.7 -44.5 -47.9 -50.4 -53.1 -54.5 -54.0 -55.0 -52.0 -50.5 -48.2 2001 -46.4 -46.0 -46.4 -47.5 -50.9 -53.7 -54.1 -52.1 -51.7 -49.6 -48.2 -45.7 2002 -45.9 -43.7 -50.3 -47.6 -52.1 -54.0 -53.7 -53.4 -53.8 -52.0 -51.0 -46.2 2003 -47.4 -44.6 -45.3 -48.2 -50.1 -53.7 -52.3 -52.6 -53.8 -51.5 -50.2 -49.9 2004 -44.3 -44.6 -45.8 -50.0 -51.6 -53.0 -54.1 -52.7 -54.0 -49.8 -50.2 -48.7 2005 -46.3 -43.4 -47.7 -48.2 -51.7 -54.6 -52.4 -54.2 -51.4 -52.1 -49.4 -48.9 2006 -46.0 -44.3 -46.0 -47.7 -49.4 -52.7 -53.3 -54.2 -54.2 -48.9 -49.8 -48.0 2007 -47.5 -45.4 -48.1 -49.8 -52.1 - - - -51.3 -51.3 -49.3 -46.2 2008 -46.0 -44.2 -45.1 -49.8 -51.1 -53.6 -54.3 -55.7 -53.0 -52.5 -48.2 -46.4 2009 -46.1 -45.2 -45.7 -49.3 -51.0 -51.1 -52.2 -54.2 -53.6 -51.0 -52.7 -48.7 2010 -46.3 -45.7 -45.9 -49.2 -49.4 -53.3 -53.5 -52.7 -52.8 -49.2 -48.4 -47.5 2011 -44.5 -44.4 -45.4 -49.0 -49.7 -52.5 -54.0 -54.1 -53.5 -50.9 -48.7 -46.0 2012 -44.7 -46.4 -47.2 -48.3 -51.3 -54.1 -54.9 -51.5 -51.6 -52.1 -49.3 -50.8 2013 -45.2 -46.3 -46.9 -46.0 -51.5 -51.9 -52.3 -55.0 -53.6 -51.1 -48.0 -47.9 2014 -47.3 -45.8 -45.9 -48.8 -50.7 -51.5 -53.0 -54.4 -52.9 -51.8 -50.4 -46.7 2015 -47.4 -44.7 -45.2 -49.1 -50.6 -53.6 -54.0 -53.1 -54.4 -50.9 -49.6 -48.1 2016 -45.8 -44.8 -44.5 -49.6 -51.4 -50.0 -54.9 -53.6 -50.8 -50.6 -49.8 -48.2 2017 -47.0 -44.5 -46.1 -48.1 -49.3 -54.6 -54.0 -53.9 -52.2 -50.8 -48.2 -47.7 2018 -44.9 -44.0 -46.0 -49.5 -52.5 -53.3 -53.7 -52.7 -52.5 -52.3 -49.1 -45.4 2019 -46.2 -46.5 -45.3 -48.5 -51.2 -52.3 -54.3 -53.7 -53.5 -51.6 -50.8 -48.5 2020 -45.9 -44.5 -44.9 -48.0 -51.0 -53.5 -56.6 -54.3 -53.9 -49.6 - -47.2 2021 -46.4 -42.6 -45.1 -46.9 -49.4 -51.2 -55.0 -53.6 -52.1 -50.3 -47.2 -43.9 2022 -45.2 -44.8 - -49.8 -50.7 -53.3 -54.5 -53.8 -51.3 -49.7 -48.1 -46.9 2023 -42.8 -46.2 -45.6 -46.8 -49.9 -53.0 -55.6 -54.4 -54.2 -50.5 -47.2 -45.9 2024 -44.7 -42.0 -48.9 -48.5 - - - - - - - -