UK 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 26.4 1963 25.1 1963 19.3 1962 9.4 1970 5.2 1979 0.5 1991 0.0 2018 0.1 2016 1.3 1986 5.2 1993 14.1 1985 23.3 2010 68.1 1963 27.8 2013 0.5 1991 17.3 1993 89.5 2010 25.3 1979 23.7 1986 18.1 2013 9.1 1968 4.2 1996 0.5 1962 0.0 2017 0.1 2014 0.9 1972 4.9 1992 13.5 1965 21.2 1981 58.1 1979 25.6 1970 0.5 1962 15.2 1985 86.6 1979 23.0 1985 20.7 1968 16.1 1970 8.5 2013 3.2 1982 0.4 1975 0.0 2016 0.1 2012 0.8 1974 4.3 1997 12.5 1996 18.7 1961 51.5 2010 25.0 1962 0.4 1975 14.7 1965 82.8 1963 19.6 1987 20.4 1979 16.0 1969 8.2 1986 2.9 1995 0.3 1989 0.0 2015 0.1 1999 0.6 1993 4.2 2003 12.5 1969 18.6 1976 46.1 1986 24.5 1969 0.3 2012 13.5 1973 80.8 1969 18.5 2010 19.9 1969 15.3 1987 7.7 1983 2.5 2010 0.2 2012 0.0 2014 0.1 1986 0.6 1979 3.8 1981 11.4 1993 16.5 1962 45.7 1985 22.9 1979 0.3 1989 13.3 2010 78.0 1985 17.5 1980 18.5 1991 13.4 1995 7.7 1969 2.5 1984 0.2 2009 0.0 2013 0.1 1977 0.6 1975 3.4 1973 10.9 2010 16.3 2009 45.6 1968 20.8 1995 0.3 1977 13.0 1969 73.5 1968 17.3 1997 18.5 1983 13.2 1965 7.3 1978 2.5 1968 0.2 1998 0.0 2012 0.1 1973 0.4 2007 3.0 2018 10.5 1971 16.1 1995 44.5 1991 20.0 1968 0.3 1964 12.9 1996 73.3 1965 16.2 1977 18.2 1996 13.1 2006 7.1 1989 2.3 1977 0.2 1985 0.0 2011 0.1 1966 0.4 1991 2.9 1983 10.0 2005 16.0 2001 44.5 1965 19.7 1975 0.2 2009 12.8 1971 72.7 1996 16.1 1984 16.8 2010 13.0 1985 7.0 1984 2.2 1967 0.2 1977 0.0 2010 0.1 1964 0.3 2012 2.8 2008 9.9 1973 15.6 1964 44.0 1977 18.8 1996 0.2 1999 12.3 1988 71.8 1962 15.9 1965 16.6 1978 12.7 1979 6.8 1966 2.1 1975 0.2 1969 0.0 2009 0.1 1962 0.3 2010 2.8 2002 9.8 1988 14.9 1996 43.7 1982 18.4 1984 0.2 1998 10.8 1972 71.2 1981 15.5 1966 16.6 1970 11.8 2018 6.4 1977 2.0 2019 0.2 1964 0.0 2008 0.0 2018 0.3 1995 2.7 2012 8.8 1962 14.4 1969 43.0 1969 18.1 2006 0.2 1986 10.3 2005 70.9 1970 15.3 1991 16.4 1981 11.6 1976 6.3 1975 2.0 2012 0.1 2017 0.0 2007 0.0 2017 0.3 1987 2.7 1980 8.6 1972 14.4 1968 42.7 1970 18.1 1965 0.2 1985 10.3 1962 69.4 1986 15.1 1978 15.6 2018 11.3 1975 6.2 1981 2.0 1997 0.1 2015 0.0 2006 0.0 2015 0.3 1971 2.6 1987 8.0 2016 14.4 1963 42.4 2011 17.8 1987 0.2 1978 10.2 1980 67.1 1987 14.7 1986 14.7 1985 11.2 2001 6.1 1990 1.7 1980 0.1 2011 0.0 2005 0.0 2013 0.3 1969 2.6 1964 8.0 1977 14.3 2008 42.2 1996 17.7 1986 0.2 1973 9.7 1966 66.5 2001 14.6 2001 14.4 1987 10.9 2010 6.0 2016 1.6 2005 0.1 2008 0.0 2004 0.0 2011 0.3 1964 2.3 1988 7.9 1966 13.2 1982 41.9 1987 17.5 2010 0.2 1969 9.4 1983 66.2 2013 14.3 2011 14.1 2001 10.8 1980 6.0 1973 1.6 1994 0.1 2007 0.0 2003 0.0 2010 0.2 2018 2.2 2010 7.5 1980 12.8 1992 40.6 2009 17.1 1985 0.2 1961 9.3 1992 64.5 1978 14.3 2009 14.0 2013 10.4 1964 5.9 2012 1.6 1971 0.1 2005 0.0 2002 0.0 2009 0.2 2003 2.0 1971 7.5 1967 12.4 1978 38.9 1981 16.9 1973 0.1 2018 8.8 1998 64.0 1973 13.9 1982 13.8 1994 10.0 1971 5.9 2008 1.5 1981 0.1 2001 0.0 2001 0.0 2008 0.2 1997 1.8 1966 7.3 1979 12.4 1967 38.4 2013 16.7 2001 0.1 2017 8.8 1975 62.2 1976 13.3 2013 13.7 2003 9.7 1996 5.6 1998 1.3 2013 0.1 2000 0.0 2000 0.0 2007 0.2 1990 1.7 1998 7.0 1998 11.8 2017 38.2 2001 16.4 1976 0.1 2016 8.7 2016 61.1 1995 13.3 1992 13.0 1965 9.5 1973 5.5 1974 1.3 1974 0.1 1999 0.0 1999 0.0 2006 0.2 1989 1.7 1974 6.9 1975 11.5 1965 38.1 1962 16.1 1971 0.1 2015 8.7 2012 60.3 1991 13.2 2019 12.4 2004 9.4 1986 5.4 2000 1.3 1973 0.1 1997 0.0 1998 0.0 2005 0.2 1988 1.4 1994 6.5 2013 11.4 1970 37.7 1997 15.8 1980 0.1 2014 8.6 1979 60.0 1980 13.1 2017 12.2 1973 8.9 1984 5.1 1988 1.2 2015 0.1 1996 0.0 1997 0.0 2004 0.2 1984 1.4 1972 6.4 1961 11.3 1973 37.4 1983 15.1 1974 0.1 2013 8.5 1967 58.8 1964 13.0 1981 11.9 2009 8.5 2011 5.0 1979 1.2 2001 0.1 1995 0.0 1996 0.0 2003 0.2 1983 1.4 1962 6.3 1989 11.2 2012 36.5 1978 15.0 2018 0.1 2011 8.4 1977 57.4 1966 12.5 1995 11.8 2016 8.3 1974 4.9 1996 1.1 1993 0.1 1988 0.0 1995 0.0 2002 0.2 1982 1.3 1975 6.3 1983 11.1 2003 36.4 1966 14.4 1978 0.1 2010 8.3 1964 57.1 1984 12.5 1968 11.2 1984 8.3 1968 4.7 1962 1.0 1987 0.1 1987 0.0 1994 0.0 2001 0.2 1977 1.1 1985 6.2 1976 11.0 1999 36.0 2018 14.3 2016 0.1 2008 8.2 2008 56.3 2003 12.4 2003 11.1 2012 8.2 1993 4.5 1995 1.0 1965 0.1 1986 0.0 1993 0.0 2000 0.1 2017 1.1 1965 6.0 2017 10.8 1990 35.9 1964 14.2 1982 0.1 2007 7.5 2003 56.0 1982 12.4 1961 10.8 2015 8.0 1972 4.5 1976 1.0 1962 0.1 1984 0.0 1992 0.0 1998 0.1 2015 1.0 2007 5.8 2012 10.6 2007 34.7 1984 13.7 2008 0.1 2005 7.4 1981 54.5 1983 11.9 2015 10.8 2006 7.9 1963 4.5 1971 1.0 1961 0.1 1983 0.0 1991 0.0 1997 0.1 2013 1.0 1970 5.7 1991 10.5 1993 33.9 1994 13.7 1966 0.1 2004 7.1 1961 53.9 2009 11.7 1970 10.5 2005 7.7 2016 4.3 2006 0.9 1991 0.1 1982 0.0 1990 0.0 1996 0.1 2009 0.9 1967 5.6 1978 10.3 2014 33.7 1980 13.5 1989 0.1 2001 6.9 2013 53.1 1975 11.1 1964 10.4 1964 7.6 2005 4.3 2001 0.8 1969 0.1 1981 0.0 1989 0.0 1995 0.1 2008 0.8 1984 5.6 1968 10.3 2005 33.1 2004 13.5 1977 0.1 2000 6.9 1976 52.8 2008 10.6 1972 10.3 2008 7.6 1988 4.3 1999 0.7 2018 0.1 1980 0.0 1988 0.0 1994 0.1 2005 0.8 1982 5.4 1964 10.2 1989 33.0 2015 13.4 1983 0.1 1997 6.8 1997 52.5 1977 10.5 1967 10.2 1976 7.4 2008 4.3 1967 0.7 2017 0.1 1978 0.0 1987 0.0 1993 0.1 2004 0.7 2015 5.3 2008 9.6 1991 32.2 2003 13.1 1988 0.1 1996 6.8 1991 51.6 1993 10.1 1976 10.2 1962 7.3 2003 4.2 2010 0.7 2011 0.1 1974 0.0 1986 0.0 1992 0.1 2002 0.7 2000 5.1 1995 9.5 2000 30.8 2006 13.0 1964 0.1 1995 6.7 1989 51.3 1971 9.9 1998 9.5 1966 7.1 1982 4.2 1994 0.7 2007 0.1 1973 0.0 1985 0.0 1991 0.1 1998 0.7 1999 5.0 1982 9.5 1998 30.7 1992 12.9 1981 0.1 1993 6.6 2017 51.2 2012 9.8 1973 9.2 1977 6.8 2015 4.1 1997 0.7 2006 0.1 1972 0.0 1984 0.0 1990 0.1 1996 0.7 1991 4.9 1990 9.5 1980 29.6 2002 12.1 2005 0.1 1988 6.6 1987 50.6 2018 9.6 2006 9.2 1975 6.7 2004 4.0 2019 0.7 1985 0.1 1971 0.0 1983 0.0 1989 0.1 1994 0.7 1986 4.8 2001 9.3 1979 29.4 1973 11.6 2015 0.1 1987 6.4 1974 50.4 1967 9.6 2004 9.1 1999 6.3 2009 4.0 1965 0.7 1978 0.1 1968 0.0 1982 0.0 1988 0.1 1981 0.7 1979 4.8 1963 8.9 1966 29.0 1971 11.6 1963 0.1 1984 6.3 2018 49.9 2016 9.6 1994 9.0 1988 6.3 1978 3.9 2003 0.7 1966 0.1 1967 0.0 1981 0.0 1987 0.1 1976 0.6 2016 4.4 2007 8.6 1987 28.6 1976 11.5 2003 0.1 1983 6.0 1982 49.0 1992 9.2 2000 8.8 1971 6.3 1966 3.9 1991 0.7 1963 0.1 1966 0.0 1980 0.0 1985 0.1 1973 0.6 2009 4.4 1992 8.5 2004 27.3 1967 11.3 2012 0.1 1982 5.9 1995 48.8 2005 9.2 1962 8.6 1982 5.9 1989 3.9 1982 0.6 2016 0.1 1965 0.0 1979 0.0 1984 0.1 1970 0.6 1976 4.4 1970 8.3 1975 27.1 2012 11.2 2000 0.1 1981 5.9 1978 48.3 1961 9.0 2016 7.8 1992 5.6 2002 3.7 2002 0.6 1989 0.1 1961 0.0 1978 0.0 1983 0.1 1968 0.6 1961 4.3 2004 8.0 1984 27.1 2008 11.1 1998 0.1 1980 5.9 1968 47.8 2006 8.8 1971 7.8 1972 5.4 2000 3.6 2015 0.5 2014 0.0 2018 0.0 1977 0.0 1982 0.1 1967 0.5 2017 3.9 1974 7.9 1986 26.8 2000 11.0 1967 0.1 1979 5.8 2007 46.8 1972 8.8 1969 7.8 1967 5.2 2007 3.4 1985 0.5 2008 0.0 2016 0.0 1976 0.0 1981 0.1 1965 0.5 1995 3.7 1987 7.7 1985 26.1 1999 10.8 1993 0.1 1976 5.5 1990 46.1 1997 8.7 2018 7.6 2019 5.2 1983 3.3 1980 0.5 2004 0.0 2014 0.0 1975 0.0 1980 0.1 1963 0.4 2014 3.6 1981 7.5 1994 25.8 2019 10.2 1972 0.1 1974 5.5 1970 45.2 2017 8.6 2012 7.4 2007 5.2 1981 3.0 1963 0.5 2002 0.0 2013 0.0 1974 0.0 1979 0.1 1962 0.4 2011 3.4 2000 7.4 2011 25.7 1995 10.0 1990 0.1 1972 5.2 1986 44.4 1988 8.0 1988 7.4 1989 5.1 1998 2.9 2005 0.5 2000 0.0 2010 0.0 1973 0.0 1978 0.0 2016 0.4 2004 3.1 2006 7.3 1983 25.7 1993 9.9 2011 0.1 1971 5.2 1963 43.8 1998 7.9 1996 6.9 1980 5.0 2014 2.8 2017 0.5 1992 0.0 2006 0.0 1972 0.0 1976 0.0 2014 0.4 1990 3.1 2003 7.3 1972 25.6 1988 9.7 2002 0.1 1970 4.9 2001 43.7 2004 7.7 2002 6.8 1974 4.9 1977 2.5 2018 0.5 1983 0.0 2004 0.0 1971 0.0 1975 0.0 2011 0.3 2013 3.1 1999 7.0 1997 25.3 2017 9.7 1994 0.1 1968 4.8 2004 43.2 1994 7.6 1999 6.6 2000 4.8 1991 2.5 1964 0.4 2009 0.0 2003 0.0 1970 0.0 1974 0.0 2006 0.3 1996 3.1 1986 6.1 2002 24.5 2005 9.6 1991 0.1 1967 4.4 2002 42.6 1989 7.4 1993 6.2 2017 4.7 1999 2.4 1992 0.4 1998 0.0 2002 0.0 1969 0.0 1972 0.0 2001 0.3 1978 3.0 2018 6.0 2016 24.1 1974 9.5 2019 0.1 1966 4.1 2000 40.9 1999 6.7 1975 5.9 2002 4.5 1967 2.1 1961 0.4 1990 0.0 1994 0.0 1968 0.0 1971 0.0 2000 0.3 1969 2.7 2015 5.9 2006 23.2 2016 9.4 1997 0.1 1965 3.8 1999 40.8 2000 6.1 2008 5.8 1995 3.9 2017 1.8 2009 0.4 1988 0.0 1993 0.0 1967 0.0 1970 0.0 1999 0.3 1963 2.5 2014 5.0 2018 23.1 1972 9.2 1999 0.0 2006 3.6 2015 40.5 2015 6.0 1974 5.6 1993 3.9 1994 1.8 1972 0.4 1972 0.0 1992 0.0 1966 0.0 1969 0.0 1992 0.2 2005 2.4 1984 4.8 1977 21.3 1998 8.5 2009 0.0 2003 3.3 2006 38.3 2011 5.8 2014 5.5 1997 3.8 1961 1.6 2007 0.3 2003 0.0 1990 0.0 1965 0.0 1968 0.0 1985 0.2 1989 2.3 1997 4.7 1971 19.1 1975 8.3 2004 0.0 2002 3.3 1984 37.7 1974 5.7 1983 4.8 2011 3.6 1990 1.5 1993 0.3 1976 0.0 1979 0.0 1964 0.0 1967 0.0 1980 0.2 1977 2.0 2009 4.1 2013 18.8 2007 7.5 2017 0.0 1994 3.0 2014 36.9 2007 5.5 2007 4.3 1998 3.5 2019 1.5 1987 0.2 1999 0.0 1976 0.0 1963 0.0 1965 0.0 1978 0.2 1968 1.5 2002 3.2 1974 18.3 1990 7.5 2007 0.0 1992 2.7 2009 34.4 1990 5.4 2005 3.6 1990 3.4 2012 1.4 2014 0.2 1986 0.0 1970 0.0 1962 0.0 1963 0.0 1966 0.1 2006 1.4 2011 2.4 2015 13.7 1989 7.0 2014 0.0 1990 2.6 1994 33.8 2002 4.5 1990 3.3 2014 3.3 1997 1.1 2004 0.1 1970 0.0 1963 0.0 1961 0.0 1961 0.0 1961 0.1 2001 1.1 1994 1.8 1988 13.1 2014 7.0 1961 0.0 1963 1.9 2011 29.4 2014 4.5 1989 3.0 1961 2.9 1992 0.7 2011 0.1 1964 5.8 1992