Scotland_N Days of Air Frost Areal series, starting from 1961 Allowances have been made for topographic, coastal and urban effects where relationships are found to exist. Seasons: Winter=Dec-Feb, Spring=Mar-May, Summer=June-Aug, Autumn=Sept-Nov. (Winter: Year refers to Jan/Feb). Values are ranked and displayed to 1 dp. Where values are equal, rankings are based in order of year descending. Data are provisional from January 2018 and Winter 2018. Last updated 04/06/2019. JAN Year FEB Year MAR Year APR Year MAY Year JUN Year JUL Year AUG Year SEP Year OCT Year NOV Year DEC Year WIN Year SPR Year SUM Year AUT Year ANN Year 25.8 1979 23.8 1968 21.0 1969 14.2 1966 8.1 1979 1.0 2012 0.1 2004 0.5 1999 1.7 1993 6.2 2003 18.0 1969 23.7 1981 60.8 2010 34.4 1979 1.2 2012 20.3 1985 105.5 1979 24.5 1984 23.6 1969 20.0 1979 13.3 1986 5.9 1996 0.9 1998 0.1 2000 0.4 2016 1.5 1986 5.8 2012 17.7 1985 23.4 2010 59.2 1979 33.7 2013 0.9 1998 18.8 1969 102.6 2010 22.5 1963 22.4 1986 19.7 2013 13.1 1983 5.8 1995 0.8 1991 0.1 1980 0.3 1973 1.4 1972 5.6 1973 16.1 1965 22.0 1976 57.1 1963 31.6 1969 0.8 1999 18.0 1993 98.9 1969 21.0 1978 22.4 1963 19.7 1962 12.4 1970 5.6 1982 0.6 2009 0.1 1978 0.3 1964 1.2 1974 5.5 1992 15.2 1996 20.5 1995 56.3 1977 31.5 1970 0.8 1991 17.9 1965 92.1 1968 20.8 1985 22.3 1979 18.9 1995 11.7 2013 5.5 2019 0.6 1975 0.1 1977 0.2 2014 1.1 1991 5.0 1993 13.0 2010 20.4 1961 52.2 1986 30.8 1962 0.8 1964 16.7 1973 90.6 1981 20.2 2010 21.7 1970 18.9 1987 11.6 1981 5.2 1968 0.5 1997 0.1 1973 0.2 2012 1.1 1975 4.6 1981 11.6 1966 20.1 2009 51.0 1969 30.5 1995 0.7 2009 15.9 1996 89.5 1985 18.6 2001 20.5 2010 18.9 1970 10.6 1989 4.4 1994 0.5 1989 0.1 1971 0.2 1986 0.9 2007 4.5 2002 11.4 1993 19.1 1996 50.9 1968 27.2 1975 0.6 1977 15.8 2010 88.6 1965 18.5 1965 19.6 1983 16.2 2006 10.2 1978 4.2 2012 0.5 1985 0.1 1966 0.2 1977 0.8 1997 4.2 1987 11.4 1971 17.6 1993 50.2 1966 26.4 1968 0.6 1975 14.8 1971 87.1 1966 18.4 1986 18.6 1978 16.1 2001 10.1 1973 4.0 1977 0.5 1964 0.0 2018 0.2 1966 0.8 1989 3.9 2008 11.0 1977 17.0 1968 50.0 1970 25.9 2001 0.6 1962 14.2 1966 86.2 1970 18.3 1991 17.9 1996 15.9 1975 10.0 1998 3.8 2010 0.4 2008 0.0 2017 0.2 1962 0.8 1979 3.9 1997 10.9 1973 16.5 1965 49.3 1991 25.0 1966 0.5 2000 13.6 2012 85.9 1995 17.9 1977 17.5 1991 15.8 1965 9.9 1968 3.3 1997 0.4 1980 0.0 2016 0.1 2018 0.6 2010 3.4 1980 10.9 1962 16.2 1964 48.8 1978 24.9 2006 0.5 1997 13.0 1998 84.1 1963 17.8 1987 17.4 2018 15.4 1985 9.7 2012 3.3 1984 0.4 1978 0.0 2015 0.1 2010 0.6 1984 3.1 2018 9.8 1972 16.0 1989 47.7 1965 24.1 1987 0.5 1989 12.8 1980 83.8 1996 17.7 1981 16.7 2013 14.7 1980 9.7 1962 3.3 1967 0.4 1962 0.0 2014 0.1 2007 0.6 1971 3.1 1998 9.7 2016 15.7 2001 47.4 1996 23.9 1981 0.5 1986 12.8 1972 82.9 1986 17.4 1966 16.5 1977 14.0 2018 9.3 1969 2.9 2005 0.4 1961 0.0 2013 0.1 2004 0.5 2013 2.9 1971 9.7 1998 15.0 1999 47.0 2001 23.1 1986 0.5 1985 12.5 1992 81.7 2001 16.5 1961 16.3 1966 13.5 1984 9.1 2016 2.8 1975 0.3 2017 0.0 2012 0.1 1998 0.5 2012 2.8 1994 9.5 1968 15.0 1982 47.0 1982 23.0 1984 0.5 1980 12.5 1962 79.2 1978 16.4 2019 16.0 2001 12.8 1988 8.6 1977 2.7 1980 0.3 2015 0.0 2011 0.1 1994 0.5 1995 2.8 1964 9.4 1980 14.9 2012 46.7 2011 22.8 1983 0.5 1978 12.1 2016 79.0 1987 16.4 1995 15.7 2004 12.3 2010 8.5 1975 2.5 2015 0.3 2011 0.0 2010 0.1 1983 0.5 1977 2.6 1985 9.4 1961 14.1 2017 46.6 1994 22.5 2010 0.5 1973 11.8 1977 78.9 1962 16.3 1980 15.3 1987 11.9 1964 8.4 1974 2.5 2001 0.3 2007 0.0 2009 0.1 1982 0.5 1964 2.6 1967 9.3 1979 14.1 1969 46.3 2018 22.5 1985 0.4 2016 11.6 2008 77.4 1973 16.1 1997 15.1 1994 11.7 1976 8.3 2000 2.3 2013 0.3 2005 0.0 2008 0.1 1981 0.4 2002 2.5 1966 8.7 1963 14.0 1966 43.9 1984 22.3 1965 0.4 2015 11.0 1979 76.9 2013 15.4 2003 15.1 1981 11.6 1996 8.0 1967 2.1 2006 0.3 2001 0.0 2007 0.1 1980 0.4 1990 2.4 2016 7.9 2005 13.9 2008 43.9 1983 21.7 1996 0.4 2011 10.2 2003 75.2 1977 15.0 2011 15.1 1973 11.5 2008 7.7 2008 2.1 1993 0.3 2000 0.0 2006 0.1 1974 0.4 1987 2.3 1988 7.3 2012 13.7 1973 43.6 1987 21.5 2018 0.4 2008 10.2 1968 75.2 1976 14.8 2018 14.8 2016 11.5 1972 7.2 2001 2.0 2007 0.3 1999 0.0 2005 0.1 1972 0.4 1983 2.1 2010 7.3 2008 13.6 1992 43.3 1997 21.5 1974 0.4 2007 10.0 1961 72.4 1980 14.5 1968 14.7 2003 11.3 1974 7.2 1988 2.0 1981 0.3 1986 0.0 2003 0.1 1969 0.4 1969 2.0 1983 7.2 2013 13.5 1963 43.3 1962 21.2 1980 0.4 2001 9.7 1987 71.9 1984 14.4 1988 14.3 1976 11.3 1968 6.8 1963 2.0 1961 0.3 1981 0.0 2002 0.1 1968 0.3 2008 1.9 1975 6.9 2000 13.4 1990 43.1 2013 20.9 1998 0.4 1981 9.7 1981 71.3 2018 14.2 1976 14.1 2006 10.6 1971 6.6 2006 1.8 1978 0.3 1977 0.0 2001 0.1 1967 0.3 2004 1.8 1974 6.9 1992 12.6 1967 42.9 1981 20.9 1978 0.4 1969 9.6 1963 68.7 1975 14.2 1970 14.0 1985 10.3 2016 6.5 2010 1.7 1987 0.3 1969 0.0 1999 0.1 1965 0.3 2003 1.7 2015 6.6 1991 12.5 2011 42.5 1985 20.8 1973 0.4 1961 9.2 2018 68.6 1983 13.8 1994 13.4 1999 10.3 1993 6.4 2018 1.7 1974 0.2 1996 0.0 1998 0.1 1963 0.3 1998 1.7 1965 6.6 1978 12.4 2003 40.9 2003 20.7 1988 0.3 2017 9.0 1964 68.1 2008 13.8 1982 13.1 1965 10.3 1981 6.4 1994 1.6 2017 0.2 1995 0.0 1997 0.1 1961 0.3 1982 1.6 1972 6.6 1970 12.4 2000 40.5 2004 20.6 1989 0.3 2005 8.9 2002 67.1 1993 13.8 1975 13.1 1962 9.9 2011 6.4 1990 1.6 1985 0.2 1987 0.0 1996 0.0 2017 0.3 1981 1.5 1962 6.4 1982 12.1 1962 39.7 2009 20.4 2008 0.3 1983 8.7 2013 66.7 1961 13.7 2009 12.3 1972 9.9 1998 6.3 1984 1.6 1971 0.2 1983 0.0 1995 0.0 2015 0.2 2018 1.3 1970 6.3 1988 11.9 1987 39.5 1980 20.1 2016 0.3 1982 8.7 1988 66.2 2012 13.5 2015 12.1 2005 9.6 1986 6.3 1979 1.6 1966 0.2 1982 0.0 1994 0.0 2013 0.2 2017 1.2 2009 6.2 1976 11.9 1979 38.0 1988 20.0 1967 0.3 1967 8.7 1975 66.0 2016 13.4 2016 12.1 1995 9.2 1973 6.1 1971 1.5 1973 0.2 1973 0.0 1993 0.0 2011 0.2 2015 1.2 2004 6.1 1989 11.7 2007 37.9 1995 19.8 1994 0.3 1966 8.6 2005 65.7 1982 12.8 1972 12.0 2009 9.2 1966 5.8 1995 1.4 2014 0.2 1972 0.0 1992 0.0 2009 0.2 1996 1.1 1990 6.1 1983 11.4 1985 36.4 1973 19.4 1982 0.3 1965 8.6 1967 64.9 1991 12.5 2008 11.9 2017 9.0 2015 5.8 1961 1.4 1969 0.2 1965 0.0 1991 0.0 2008 0.2 1976 1.0 1984 5.9 2018 11.1 1978 35.2 1999 19.3 1977 0.2 2018 8.5 1991 64.3 2009 12.5 2004 11.9 1975 9.0 1994 5.7 1999 1.4 1962 0.1 2018 0.0 1990 0.0 2006 0.2 1973 1.0 1982 5.9 2017 10.9 1998 35.0 1976 18.2 1971 0.2 2014 8.5 1983 64.3 1972 12.5 1998 11.8 1988 8.9 1982 5.6 2015 1.3 1992 0.1 2016 0.0 1989 0.0 2005 0.2 1970 1.0 1976 5.9 1967 10.8 2002 34.8 2016 17.9 2012 0.2 2010 8.1 1970 64.0 2003 11.9 2017 11.5 1964 8.9 1978 5.4 1985 1.3 1989 0.1 2013 0.0 1988 0.0 2003 0.2 1968 0.9 2014 5.7 1986 10.6 1972 34.6 2015 17.3 2000 0.2 2004 8.0 1986 63.1 1994 11.6 2013 11.3 1980 8.7 1989 5.3 1965 1.3 1963 0.1 2010 0.0 1987 0.0 2002 0.2 1967 0.9 2013 5.7 1975 10.6 1970 34.2 2002 17.2 1976 0.2 1996 7.9 2000 62.1 1964 11.2 1993 11.2 1984 8.7 1967 5.1 1976 1.2 2008 0.1 2006 0.0 1986 0.0 2001 0.2 1965 0.9 2000 5.6 1964 10.5 1986 34.0 1964 17.1 2015 0.2 1995 7.7 1982 61.9 1998 10.8 1999 11.0 2015 8.6 1983 5.0 2005 1.2 2000 0.1 2004 0.0 1985 0.0 2000 0.2 1963 0.8 2017 5.5 1990 10.2 1980 33.4 2008 16.6 2019 0.2 1993 7.6 1974 59.5 1967 10.7 1973 10.8 2002 8.5 2007 5.0 2002 1.2 1965 0.1 1993 0.0 1984 0.0 1997 0.2 1962 0.8 1991 5.2 1995 10.1 2014 33.1 2006 15.9 2005 0.2 1988 7.3 1976 59.3 2006 10.6 2006 10.0 2000 8.3 2017 4.9 1997 1.1 2002 0.1 1988 0.0 1983 0.0 1996 0.1 2009 0.8 1979 5.0 2001 9.4 1994 32.4 2019 15.9 1963 0.2 1987 7.2 1989 59.2 1999 10.4 1969 9.5 1982 8.2 1999 4.9 1982 1.1 1983 0.1 1984 0.0 1982 0.0 1995 0.1 2006 0.7 1986 5.0 1987 9.1 1977 32.2 1975 15.7 1964 0.2 1979 7.1 1990 58.1 2017 10.3 1967 9.4 1989 8.1 2005 4.3 1991 1.0 2018 0.1 1979 0.0 1981 0.0 1993 0.1 2005 0.7 1963 4.8 2004 8.6 2004 32.0 2000 15.5 1972 0.2 1974 7.0 1978 58.0 1988 10.2 2012 9.3 1971 7.9 2004 4.2 2019 1.0 2011 0.1 1976 0.0 1979 0.0 1992 0.1 2001 0.6 2007 4.8 1981 8.4 2005 32.0 1967 14.6 1993 0.2 1972 6.9 2017 57.3 1989 9.9 1992 9.2 2008 7.9 2003 4.1 1996 1.0 2009 0.1 1974 0.0 1976 0.0 1991 0.1 2000 0.6 2005 4.6 2009 8.3 1997 31.7 1990 14.3 1999 0.2 1971 6.6 1997 56.5 1971 9.7 1962 9.1 1974 7.8 2000 3.7 1992 1.0 2004 0.1 1971 0.0 1975 0.0 1990 0.1 1999 0.6 1999 4.6 1974 8.2 2018 31.2 2012 13.3 2002 0.2 1970 6.3 2004 55.0 2000 9.3 1983 8.4 2012 7.8 1963 3.7 1980 1.0 1998 0.1 1970 0.0 1974 0.0 1989 0.1 1994 0.6 1961 4.2 2014 8.2 1983 30.6 1974 13.2 2007 0.2 1968 6.2 1995 54.3 1992 9.0 1996 8.2 2011 7.4 2009 3.6 1987 1.0 1991 0.1 1968 0.0 1972 0.0 1988 0.1 1992 0.5 2006 4.2 1999 8.1 1991 30.6 1972 13.0 2017 0.1 2013 6.0 2009 54.1 2015 8.9 1964 8.0 1997 7.2 2002 3.6 1964 0.9 1972 0.1 1967 0.0 1970 0.0 1987 0.1 1988 0.5 1995 4.1 2002 7.7 1984 30.3 1993 11.9 2009 0.1 2006 5.6 2015 53.9 2004 8.7 2014 7.8 2019 6.9 2019 3.5 2009 0.8 1990 0.1 1966 0.0 1969 0.0 1985 0.1 1985 0.5 1968 3.8 1984 6.7 2006 28.9 2017 11.8 2011 0.1 1994 5.4 1984 52.7 1974 8.6 1990 7.7 1967 6.7 1977 3.2 1972 0.7 2016 0.0 2014 0.0 1968 0.0 1984 0.1 1980 0.4 1996 3.7 2015 6.6 1974 28.5 1971 11.7 1997 0.1 1992 5.2 2014 52.4 2005 8.6 1971 7.5 1961 6.4 1992 3.1 2017 0.7 1988 0.0 2003 0.0 1967 0.0 1979 0.1 1978 0.4 1989 3.7 2003 6.5 2015 27.8 2005 11.7 1961 0.1 1984 5.2 2001 51.5 2002 7.8 1974 7.3 2007 6.3 1991 2.9 2003 0.6 2003 0.0 2002 0.0 1965 0.0 1978 0.1 1966 0.4 1978 3.5 2007 6.5 1975 24.8 1992 11.6 1991 0.1 1976 5.0 2007 51.3 1997 7.6 2002 7.1 1990 5.0 2014 2.6 2007 0.4 1999 0.0 1994 0.0 1964 0.0 1976 0.1 1961 0.4 1969 2.2 2006 6.1 2013 24.5 1998 11.5 1992 0.1 1963 4.9 1999 50.4 2011 7.0 2005 6.8 1992 4.0 2012 2.4 2014 0.4 1976 0.0 1992 0.0 1963 0.0 1975 0.0 2016 0.3 2011 2.0 2011 5.4 1971 21.5 2014 11.4 2003 0.0 2003 4.9 1994 47.2 1990 7.0 2000 6.7 2014 3.9 1990 2.1 1993 0.2 1986 0.0 1990 0.0 1962 0.0 1971 0.0 2014 0.3 1977 2.0 1997 5.1 2016 20.8 2007 11.1 1990 0.0 2002 2.9 2006 44.4 2007 6.9 2007 5.5 1993 3.9 1961 1.6 2004 0.1 1970 0.0 1963 0.0 1961 0.0 1970 0.0 2011 0.1 2001 2.0 1994 2.3 1988 15.3 1989 10.5 2004 0.0 1990 2.4 2011 39.7 2014 3.5 1989 3.7 1998 3.5 1997 0.9 2011 0.1 1964 8.8 2014