Campbell 06Z temperature 1961 - - - 7.4 5.9 5.4 4.5 6.0 5.3 7.6 7.4 10.0 1962 9.6 9.5 9.5 7.5 7.3 6.3 5.8 5.6 6.4 7.0 8.3 9.5 1963 10.2 10.2 8.7 7.4 5.6 5.2 4.5 4.2 5.8 6.4 5.9 7.5 1964 9.0 9.4 8.3 7.0 6.0 4.9 5.5 4.1 6.1 6.8 6.9 9.8 1965 11.2 8.9 9.5 7.0 6.1 5.8 4.9 5.3 6.3 5.5 6.6 7.7 1966 8.4 9.2 8.7 8.0 6.6 5.1 4.9 5.9 6.1 6.3 7.1 8.0 1967 10.1 8.6 9.1 6.8 5.2 6.3 5.0 5.5 5.1 7.4 6.3 8.6 1968 9.1 9.0 9.1 8.3 7.8 5.5 5.7 6.3 5.8 5.9 7.5 9.4 1969 10.6 9.3 7.7 6.8 6.4 4.5 6.2 5.8 7.2 5.4 8.0 9.8 1970 8.7 9.6 8.9 7.3 6.6 6.0 5.7 6.7 - - 7.8 8.0 1971 9.8 9.8 9.0 8.3 7.2 5.7 6.3 6.0 4.9 6.5 7.8 9.4 1972 9.7 9.7 9.0 6.6 5.6 3.3 4.6 4.9 5.6 5.9 6.9 8.6 1973 9.5 9.1 9.4 7.0 4.5 5.6 5.4 5.1 6.0 6.1 6.8 9.0 1974 9.4 9.9 8.8 7.9 6.1 4.7 4.3 5.2 6.6 6.1 8.1 10.6 1975 12.0 10.4 9.5 7.9 5.9 4.6 5.0 4.6 5.4 6.3 7.1 7.8 1976 8.9 8.3 8.9 8.0 6.1 4.8 4.7 4.8 6.1 6.0 7.5 10.2 1977 9.8 10.2 8.9 7.3 5.9 4.9 4.9 6.2 6.0 6.0 7.9 9.5 1978 10.7 10.3 8.4 8.3 7.0 4.5 5.8 6.5 6.6 7.4 7.6 9.2 1979 9.2 9.0 8.9 8.4 6.2 6.4 6.7 5.4 5.7 7.3 8.6 9.7 1980 10.3 10.8 9.8 8.6 7.0 5.7 4.7 5.9 6.2 6.9 6.8 8.5 1981 9.1 - 9.4 8.3 7.1 6.2 6.4 - - - - - 1982 - - - 8.7 7.8 6.2 5.2 5.6 6.6 5.9 - - 1983 - - - 6.9 5.2 5.2 5.9 6.3 5.0 6.8 - - 1984 - - 10.1 7.6 6.2 6.7 5.6 5.6 6.8 - - - 1985 - - 9.1 8.1 6.6 7.4 5.5 6.2 6.3 - - - 1986 - - 10.0 8.7 6.2 5.6 4.7 5.1 5.5 - - - 1987 - - 9.8 7.7 7.0 4.6 5.2 5.7 5.3 - - - 1988 - - - 6.7 4.8 4.6 5.0 5.1 5.9 6.7 - - 1989 - - - 7.6 7.1 5.7 5.8 6.4 6.9 - - - 1990 - - - - - - - - - - - - 1991 - - - - - - - - - - - - 1992 - - - 7.4 5.2 4.6 5.0 - 5.1 - - - 1993 - - - 7.7 7.1 5.1 6.4 5.3 5.3 - - - 1994 - - - 7.3 6.4 4.2 4.9 5.4 4.2 - - - 1995 8.9 9.2 8.1 8.2 7.0 3.2 2.8 4.8 5.7 5.9 6.8 8.6 1996 9.7 10.0 - 7.8 6.5 4.3 4.8 5.0 7.0 7.0 7.3 9.6 1997 10.0 9.6 8.5 7.4 6.8 5.8 5.7 5.2 4.4 5.7 6.1 8.1 1998 8.9 - 8.2 7.1 5.9 5.8 5.3 4.9 6.5 6.0 7.1 9.1 1999 9.8 11.2 9.4 7.9 7.0 - 5.3 5.4 6.6 - - - 2000 - - - 7.3 - 6.0 6.4 5.0 6.5 - - - 2001 - - - - - - - - - - - - 2002 - - - - - - - - - - - - 2003 - - - - - - - - - - - - 2004 - - - - - - - - - - - - 2005 - - - - - - - - - - - - 2006 - - - - - - - - - - - - 2007 - - - - - - 3.5 5.2 5.9 6.0 6.6 9.4 2008 9.9 10.2 9.0 7.4 6.2 5.7 4.9 4.7 6.2 5.8 6.6 8.8 2009 10.1 8.0 8.9 8.3 6.0 4.7 3.9 6.4 6.3 5.6 5.7 8.5 2010 9.9 9.8 8.1 6.8 6.4 5.5 5.5 5.2 4.5 6.9 8.1 8.8 2011 9.2 9.7 8.5 7.5 6.2 6.0 4.3 5.2 5.4 6.8 7.2 9.5 2012 9.1 9.7 8.6 8.4 6.8 3.9 6.0 6.4 6.5 5.6 7.2 9.9 2013 9.9 10.0 9.5 7.9 6.5 5.3 5.5 6.5 5.3 6.6 7.1 9.2 2014 9.5 9.8 9.6 8.1 6.6 7.0 5.8 5.8 5.9 6.4 7.2 9.3 2015 10.2 9.9 9.6 7.1 7.2 4.1 5.6 5.3 5.1 5.8 7.1 8.4 2016 8.8 9.6 8.5 7.4 7.2 6.5 5.6 5.4 6.7 7.5 8.0 9.4 2017 8.8 10.4 9.0 8.3 7.1 6.4 5.0 5.6 6.7 6.7 8.3 10.0 2018 11.6 9.8 9.6 6.8 5.8 6.4 5.9 6.6 6.6 6.9 8.6 10.1 2019 9.9 - 10.3 9.0 7.1 6.3 5.9 4.3 5.5 6.4 8.6 9.8 2020 10.2 9.6 9.0 8.2 8.0 6.6 5.8 5.0 5.3 7.1 8.2 9.4 2021 10.5 10.6 9.7 7.5 6.9 6.3 5.7 5.9 5.7 6.9 8.6 - 2022 9.9 10.5 9.4 8.1 7.5 6.2 4.7 6.0 6.0 6.4 8.8 10.0 2023 11.6 11.6 9.7 9.0 7.5 7.6 5.8 6.4 6.2 6.4 8.0 8.8 2024 9.8 9.9 8.3 8.0 - - - - - - - -