Marion 12Z 300hPa temperature 1966 - - - - - - - - - -45.9 - - 1967 - - - - -46.1 -48.5 -50.7 -47.7 -49.3 - -44.8 - 1968 - - - - - - -49.3 - -50.4 - -45.8 -44.5 1969 -42.8 - - - - -48.9 - - - - - -43.9 1970 -43.2 - - -48.6 -48.0 -47.0 -50.2 -49.4 -50.1 -48.9 -47.4 -41.2 1971 - -40.4 -42.0 -44.2 -48.4 -50.5 -49.4 -48.5 -49.7 -48.8 -45.9 - 1972 - -41.0 -41.9 - - -48.0 - -48.5 - - - - 1973 -44.8 -41.3 -43.7 -42.7 -49.6 -50.7 -49.3 -50.4 -49.0 - - -42.4 1974 -41.8 -41.7 -42.3 -45.8 -46.7 -47.8 -49.7 -47.9 -46.0 -44.0 -42.2 -39.1 1975 -40.4 -37.7 -40.9 -42.5 -48.5 -49.9 -52.3 -50.7 -48.5 -47.6 -44.4 -43.8 1976 -40.9 -40.7 -42.9 -46.4 -46.3 -49.0 -50.9 -49.9 -48.0 -47.5 -46.5 -45.1 1977 -42.3 -40.2 -41.7 -45.9 -47.1 -49.3 -49.7 -48.3 -46.7 -45.6 -45.3 -43.1 1978 -42.5 -43.8 -40.5 -44.7 -47.2 -48.3 -48.8 -49.6 -48.6 -47.0 -43.5 -42.4 1979 -41.0 -41.1 -42.7 -44.4 -46.3 -48.0 -49.1 -49.8 -48.5 -46.4 -44.4 -44.7 1980 -42.1 -42.0 -42.5 -43.1 -45.7 -48.5 -49.5 -48.7 -49.0 -46.6 -44.9 -43.8 1981 -43.6 -40.5 -41.9 -44.8 -47.5 -50.1 -50.2 -50.2 -47.2 -46.6 -45.5 -43.5 1982 -43.4 -41.1 -41.9 -44.2 -48.7 -48.4 -48.8 -48.2 -47.8 -46.7 -45.7 -43.2 1983 -43.1 -41.6 -42.2 -43.1 -46.5 -48.4 -49.9 -49.3 -46.6 -45.0 -45.2 -43.0 1984 -42.0 -40.7 -41.0 -44.1 -46.5 -48.3 -49.6 -48.8 -47.9 -45.0 -44.6 -45.1 1985 -42.2 -42.0 -42.1 -42.4 -47.2 -48.0 -49.6 -48.3 -48.3 -45.6 -44.2 -45.0 1986 -43.2 -42.0 -43.9 -45.0 -48.2 -49.1 -49.9 -48.6 -45.8 -43.7 -44.0 -41.9 1987 -42.7 -40.5 -42.7 -44.4 -45.5 -49.1 -47.8 -49.2 -48.5 -46.8 -46.0 -44.9 1988 -42.8 -41.2 -42.3 -43.1 -48.3 -48.9 -51.2 -49.7 -48.9 -47.2 -45.2 -44.5 1989 -43.1 -41.0 -41.9 -44.8 -48.4 -49.4 -49.9 -50.2 -48.6 -47.7 -45.0 -43.0 1990 -41.3 -40.4 -43.2 -43.4 -47.1 -49.6 -49.9 -50.4 -47.9 -47.1 -45.5 -44.3 1991 -42.6 -43.2 -41.3 -44.9 -47.1 -49.2 -50.4 -49.5 -48.8 -45.8 -47.5 -42.8 1992 -44.0 -40.6 -41.5 -45.6 -47.7 -49.0 -50.3 -50.7 -50.1 -47.7 -46.1 -47.1 1993 -44.4 -41.3 -42.9 -43.1 -48.1 -50.2 -49.7 -51.1 -48.1 -46.5 -45.6 -43.8 1994 -43.6 -41.2 -42.6 -45.1 -47.7 -49.4 -50.1 -50.6 -48.5 -48.6 -47.2 -44.0 1995 -41.3 -42.6 -43.2 -45.4 -47.9 -50.0 -51.4 -48.7 -47.8 -47.7 -46.4 -44.1 1996 -42.1 -41.8 -43.4 -44.7 -47.3 -49.0 -51.0 -50.6 -48.7 -46.9 -45.5 -44.8 1997 -42.4 -41.8 -43.9 -45.7 -47.1 -49.7 -50.2 -50.0 -48.5 -47.2 -46.9 -44.3 1998 -42.6 -42.6 -43.6 -44.9 -48.2 -51.0 -50.5 -49.7 -49.8 -47.2 -46.1 -44.4 1999 -42.0 -43.3 -43.2 -45.6 -48.3 -50.1 -50.1 -49.8 -48.5 -45.9 -45.7 -44.8 2000 -44.0 -42.0 -41.9 -45.2 -48.2 -49.1 -49.9 -51.7 -47.4 -46.8 -43.8 -45.6 2001 -41.7 -40.5 -42.8 -45.8 -46.2 -49.1 -49.0 -51.3 -48.3 -47.2 -46.2 -44.7 2002 -42.6 -42.9 -42.6 -44.0 -46.4 -49.7 -51.0 -49.1 -48.8 -46.5 -45.7 -43.7 2003 -43.9 -41.4 -42.0 - - - - - - - -46.1 -45.1 2004 -42.4 -43.8 -44.1 -43.5 -48.7 -49.1 -50.6 -51.1 -48.8 -47.1 -47.1 -42.5 2005 -44.2 - - -44.4 -46.3 -49.3 -50.0 -50.1 -48.0 -45.0 -45.0 -47.1 2006 -43.3 -42.6 -43.0 -45.0 - - - - -48.6 -46.9 -45.8 -45.9 2007 -43.4 -41.1 -42.6 -43.8 -47.8 -49.2 -49.7 -49.4 -48.7 -47.2 -44.7 -42.5 2008 -44.0 -43.6 -43.5 -46.1 -46.8 -49.2 -53.4 -51.2 -49.4 -49.2 -46.3 -45.5 2009 -43.7 -42.0 -43.7 -45.3 -47.1 -48.6 -50.7 -49.5 -49.1 -45.7 -44.4 -46.4 2010 -42.5 -40.2 -43.0 -45.0 -48.5 -49.5 -50.0 -49.7 -48.1 -47.9 - - 2011 - - - -45.6 -48.1 -50.2 -50.7 -48.4 -50.5 -47.9 -47.7 -43.9 2012 -42.6 -43.7 -43.0 -44.7 -49.0 -50.7 -50.7 -48.2 - - - - 2013 -43.4 -42.3 -43.7 - - - - - - - - - 2014 - - - -47.9 - - - - - - - - 2015 - - - - - - - - - - - - 2016 - - - - -46.9 -49.9 -49.9 -48.9 -48.4 -46.4 -47.0 -45.0 2017 -41.6 -41.4 -42.7 -44.0 -46.3 -49.4 -50.8 -51.7 -47.1 -46.1 -43.9 -44.4 2018 -42.2 -42.5 -43.7 -45.1 -46.8 -49.8 -49.4 -51.6 -49.2 -45.3 -45.4 -45.4 2019 -42.3 -41.8 -43.5 -43.6 -46.3 -49.2 -51.3 -51.4 -46.9 -48.2 -46.4 -45.0 2020 -42.3 -41.4 -44.4 -46.1 - - - - - - - - 2021 - - - - - - - - - - - - 2022 - - - - - - - - - - - - 2023 - - - - -47.2 -48.7 -49.9 -49.0 - -48.2 -45.5 -40.8 2024 -41.2 -40.7 -42.3 - - - - - - - - -