England_NW_and_N_Wales 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 26.5 1963 26.3 1963 20.5 1962 9.2 1968 4.5 1996 0.6 1991 0.1 1971 0.1 1964 1.7 1986 6.4 1993 13.3 1965 23.2 2010 70.2 1963 30.3 2013 0.6 1991 19.1 1993 93.1 2010 25.0 1979 24.4 1986 20.2 2013 9.0 2013 4.4 1979 0.4 1975 0.0 2018 0.0 2018 0.9 1972 5.1 1992 12.9 1985 22.2 1981 60.2 1979 25.8 1969 0.5 1962 14.0 1965 84.2 1979 24.2 1985 20.9 1968 16.1 1969 8.8 1970 2.9 1982 0.4 1962 0.0 2017 0.0 2017 0.8 1979 4.7 2003 12.4 1993 19.1 1961 52.8 2010 25.8 1962 0.4 1975 13.7 1985 83.8 1969 20.7 1987 20.5 1979 15.5 1970 8.4 1969 2.8 1984 0.3 1989 0.0 2016 0.0 2016 0.6 1974 4.7 1997 11.8 1996 17.5 1976 47.2 1991 24.5 1970 0.3 1989 13.1 2010 82.9 1963 18.6 1997 19.5 2010 14.7 1987 7.5 1986 2.7 1975 0.3 1977 0.0 2015 0.0 2015 0.4 2007 3.9 1981 11.7 1969 17.3 1962 46.4 1986 21.3 1979 0.3 1977 12.9 1988 76.6 1985 18.0 1980 19.4 1983 13.2 2006 7.4 1978 2.5 2010 0.3 1973 0.0 2014 0.0 2014 0.4 1993 3.5 1983 11.4 2005 17.0 1969 45.9 1982 20.4 1975 0.3 1973 12.3 1973 74.2 1996 17.8 2010 19.3 1991 13.0 1976 7.3 1984 2.5 1995 0.3 1969 0.0 2013 0.0 2013 0.4 1987 3.4 1973 10.7 1971 16.5 2001 45.8 1985 20.1 1968 0.3 1971 12.3 1971 72.8 1968 16.7 1991 19.2 1969 12.9 1985 7.1 1989 2.5 1968 0.2 2011 0.0 2012 0.0 2012 0.4 1975 3.3 2018 10.3 2010 15.8 1995 44.4 1970 19.4 2010 0.3 1969 12.3 1969 71.3 1965 16.4 1977 19.0 1996 12.9 1965 6.7 1983 2.4 1977 0.2 1985 0.0 2011 0.0 2011 0.3 2018 2.8 2002 10.0 1988 15.5 2009 44.4 1968 18.8 1996 0.2 2011 12.1 1996 71.1 1962 15.5 2013 17.5 1981 12.1 2010 6.2 2016 2.1 1967 0.2 1971 0.0 2010 0.0 2010 0.3 1995 2.8 1988 9.7 1967 15.3 2008 44.2 1965 18.6 1965 0.2 1985 11.6 2005 70.6 2013 15.5 2011 16.6 1978 12.0 2018 6.2 1975 1.8 1997 0.2 1967 0.0 2009 0.0 2009 0.3 1964 2.7 2010 8.9 2016 15.3 1964 43.9 1996 18.5 1995 0.2 1967 11.2 1972 69.7 1981 15.5 1965 15.7 1970 11.8 1979 6.2 1966 1.8 1971 0.1 2015 0.0 2008 0.0 2008 0.2 2012 2.5 1964 8.9 1973 15.1 1996 42.8 1969 17.9 1984 0.2 1964 10.3 1980 67.9 1986 15.0 1992 15.3 2013 11.8 1964 6.0 1990 1.7 2019 0.1 2012 0.0 2007 0.0 2007 0.2 2005 2.4 2008 8.6 1972 14.7 1978 42.4 1987 17.8 1976 0.2 1961 10.3 1967 67.8 1987 15.0 1966 14.9 2001 11.7 1995 6.0 1973 1.7 2012 0.1 2009 0.0 2006 0.0 2006 0.2 1991 2.4 1980 8.1 1962 14.4 1968 41.9 2011 17.3 1987 0.1 2018 10.2 1983 67.8 1970 14.6 2001 14.8 2018 11.6 2001 5.8 1974 1.6 1980 0.1 2008 0.0 2005 0.0 2005 0.2 1988 2.3 1974 7.9 1980 14.3 1963 41.5 2013 17.2 2001 0.1 2015 9.8 1962 67.5 2001 14.6 1986 14.8 1987 11.5 1975 5.6 1981 1.6 1974 0.1 2007 0.0 2004 0.0 2004 0.2 1977 2.0 1987 7.9 1977 13.3 1992 41.5 1977 17.1 2006 0.1 2014 9.4 1975 63.1 1978 14.3 1982 14.5 1985 11.2 1980 5.6 1977 1.5 2005 0.1 2005 0.0 2003 0.0 2003 0.2 1971 2.0 1966 7.2 1975 12.6 1982 40.7 2009 16.9 1971 0.1 2013 9.3 2016 61.8 1964 14.0 1984 14.3 1994 10.4 2011 5.4 2000 1.4 1994 0.1 2004 0.0 2002 0.0 2002 0.2 1969 1.8 1975 6.6 1983 12.3 2003 38.8 2001 16.8 1980 0.1 2012 9.0 1992 60.6 1991 13.4 1961 13.6 2003 10.0 1971 5.3 2012 1.4 1993 0.1 2001 0.0 2001 0.0 2001 0.1 2015 1.7 1972 6.5 2013 12.1 1967 38.2 1981 16.8 1973 0.1 2009 8.5 1964 60.6 1973 13.3 2009 13.4 1965 9.6 1996 5.2 1998 1.3 2001 0.1 1999 0.0 2000 0.0 2000 0.1 2010 1.6 2012 6.5 1979 11.3 1970 37.9 1997 16.7 1986 0.1 2008 8.2 1977 59.9 1976 12.5 2019 12.5 1984 9.6 1973 5.1 2008 1.3 1987 0.1 1996 0.0 1999 0.0 1999 0.1 2009 1.6 1962 6.2 1989 11.2 1990 37.1 1983 16.5 1985 0.1 2007 8.1 1966 59.8 1980 12.3 1978 12.4 2004 9.0 1986 5.1 1979 1.3 1973 0.1 1988 0.0 1998 0.0 1998 0.1 2008 1.4 1998 6.1 2017 10.8 2007 37.0 1964 15.3 1974 0.1 2005 7.9 1979 56.6 2003 12.1 1995 12.0 2009 8.4 1968 5.1 1971 1.3 1969 0.1 1987 0.0 1997 0.0 1997 0.1 2003 1.4 1971 6.1 1976 10.7 2012 36.8 1962 15.0 1964 0.1 2004 7.7 2003 56.4 1995 12.0 2017 11.4 2012 8.3 1963 4.9 2010 1.2 1981 0.1 1986 0.0 1996 0.0 1996 0.1 2002 1.1 1994 6.1 1966 10.6 2017 33.8 1966 14.8 2018 0.1 2001 7.3 2012 55.5 1982 11.9 1981 11.0 1964 8.0 1974 4.6 1996 1.2 1965 0.1 1984 0.0 1995 0.0 1995 0.1 1997 0.9 1999 5.7 1998 10.5 1973 33.3 1978 13.9 2016 0.1 2000 7.2 2008 54.0 1984 11.8 2003 10.7 1973 7.8 2015 4.5 2002 1.1 2013 0.1 1983 0.0 1994 0.0 1994 0.1 1996 0.9 1982 5.7 1968 10.4 1989 33.2 2004 13.9 1978 0.1 1999 7.1 1998 52.9 1983 11.7 1970 10.5 2016 7.8 1984 4.5 1976 0.9 1991 0.1 1982 0.0 1993 0.0 1993 0.1 1990 0.9 1970 5.7 1964 10.1 2005 33.2 1984 13.4 1982 0.1 1998 6.8 2017 51.8 1966 11.7 1964 10.5 2015 7.5 2004 4.4 1994 0.9 1962 0.1 1981 0.0 1992 0.0 1992 0.1 1989 0.8 2007 5.5 2012 9.7 1965 33.2 1980 13.3 1989 0.1 1996 6.8 1974 51.6 1975 11.5 1968 10.3 2005 7.4 2005 4.4 1965 0.8 1966 0.1 1978 0.0 1991 0.0 1991 0.1 1984 0.8 1986 5.3 1990 9.5 1993 32.4 1994 12.6 2008 0.1 1993 6.7 1981 51.4 1971 10.9 2006 10.2 2008 7.4 1972 4.4 1962 0.8 1963 0.1 1974 0.0 1990 0.0 1990 0.1 1983 0.8 1985 5.1 1995 9.4 1999 31.8 2018 12.5 1966 0.1 1988 6.6 2013 50.9 2009 10.8 2015 10.1 2006 7.2 2016 4.3 2001 0.8 1961 0.1 1972 0.0 1989 0.0 1989 0.1 1982 0.7 2017 5.1 1978 9.4 1979 31.4 2003 12.3 1977 0.1 1987 6.6 1976 50.3 1993 9.9 1973 9.5 1976 7.1 2008 4.3 1988 0.7 2018 0.1 1968 0.0 1988 0.0 1988 0.1 1976 0.7 2000 5.0 1961 9.3 2000 31.1 2006 12.1 2015 0.1 1986 6.4 1989 50.3 1967 9.9 1967 9.5 1975 7.0 2003 4.2 1995 0.7 2017 0.1 1966 0.0 1987 0.0 1987 0.1 1973 0.7 1991 4.7 2008 9.2 2014 30.5 2015 11.5 1983 0.1 1984 6.3 2018 50.1 2008 9.8 1972 9.4 1982 6.7 1993 4.1 1982 0.6 2015 0.1 1965 0.0 1986 0.0 1986 0.1 1970 0.7 1965 4.7 2007 9.2 1991 30.1 1992 11.4 1988 0.1 1983 5.9 1997 49.2 1977 9.6 2012 9.4 1962 6.6 1988 4.0 1999 0.6 2004 0.1 1964 0.0 1985 0.0 1985 0.1 1967 0.6 2009 4.7 2004 9.2 1987 28.5 2002 11.3 1981 0.1 1982 5.9 1968 48.7 2012 9.6 1998 9.1 1966 6.4 1982 4.0 1980 0.6 1985 0.1 1961 0.0 1984 0.0 1984 0.1 1966 0.6 1984 4.7 1991 8.8 1998 28.3 1971 11.2 2011 0.1 1981 5.8 2007 48.0 2005 9.2 2000 8.2 1971 5.8 1978 3.9 2019 0.6 1978 0.0 2018 0.0 1983 0.0 1983 0.1 1965 0.6 1979 4.7 1982 8.8 1980 26.8 1973 11.2 2005 0.1 1980 5.8 1987 47.4 1992 9.2 1969 8.1 1967 5.7 2009 3.9 1991 0.6 1972 0.0 2017 0.0 1982 0.0 1982 0.1 1963 0.6 1967 4.2 1963 7.5 1985 26.1 2012 11.2 2003 0.1 1979 5.7 1995 46.6 1961 9.1 1996 7.9 2007 5.7 1989 3.8 2003 0.5 2016 0.0 2016 0.0 1981 0.0 1981 0.1 1962 0.5 2015 4.0 2001 7.3 2004 25.8 2008 11.2 1963 0.1 1978 5.7 1990 45.9 2018 8.8 1971 7.8 1988 5.4 1966 3.8 1997 0.5 2007 0.0 2014 0.0 1980 0.0 1980 0.1 1961 0.5 2014 3.9 1992 7.1 1984 25.2 1993 10.9 2000 0.1 1976 5.7 1982 45.7 2006 8.5 2004 7.6 1977 5.3 2002 3.6 2015 0.5 1989 0.0 2013 0.0 1979 0.0 1979 0.0 2017 0.4 2016 3.9 1974 7.1 1975 25.0 1976 10.2 2002 0.1 1974 5.6 1991 45.5 2016 8.5 1994 7.5 1972 5.2 2000 3.6 2006 0.5 1988 0.0 2010 0.0 1978 0.0 1978 0.0 2016 0.4 2011 3.7 1970 7.0 1966 25.0 1967 10.1 1972 0.1 1972 5.5 1961 45.0 1972 8.4 1976 7.3 1999 4.9 2007 3.5 1967 0.4 2011 0.0 2006 0.0 1977 0.0 1977 0.0 2014 0.4 1995 3.6 1999 6.9 1997 24.3 2000 10.0 1990 0.1 1970 5.4 1978 44.7 1997 8.4 1962 6.6 2019 4.7 2014 3.1 2017 0.4 2008 0.0 2003 0.0 1976 0.0 1976 0.0 2013 0.4 1976 3.5 1987 6.9 1986 23.0 1999 9.8 1993 0.1 1968 5.3 1986 42.0 2004 7.4 2002 6.3 1989 4.6 1991 3.0 1985 0.4 1983 0.0 2002 0.0 1975 0.0 1975 0.0 2011 0.4 1961 3.1 2006 6.7 1983 22.6 2019 9.7 1967 0.1 1966 4.8 2004 41.0 2017 6.9 1999 6.1 1974 4.5 1981 3.0 1964 0.3 2006 0.0 2000 0.0 1974 0.0 1974 0.0 2006 0.3 1978 2.9 2003 6.1 1972 22.6 1974 9.5 2012 0.1 1965 4.6 1970 40.3 1989 6.7 2016 5.9 1993 4.4 1983 2.3 2005 0.3 2003 0.0 1998 0.0 1973 0.0 1973 0.0 2004 0.3 1969 2.8 1981 5.9 2002 22.3 2005 9.3 1991 0.0 2017 4.6 1963 39.2 1994 6.4 2018 5.8 1992 4.3 1977 2.2 1963 0.3 2002 0.0 1997 0.0 1972 0.0 1972 0.0 2001 0.2 1996 2.7 1986 5.8 1994 22.2 1995 9.0 1998 0.0 2016 4.4 1999 38.8 1988 6.1 1974 5.7 1980 4.1 1967 2.1 2018 0.3 2000 0.0 1995 0.0 1970 0.0 1971 0.0 2000 0.2 1990 2.6 2018 5.1 2016 22.2 1972 9.0 1997 0.0 2010 4.1 2001 38.2 1998 6.0 1993 5.6 2000 3.7 1990 2.1 2009 0.3 1992 0.0 1994 0.0 1969 0.0 1970 0.0 1999 0.2 1977 2.4 2015 5.1 2011 21.9 1988 8.9 2004 0.0 2006 3.5 2002 37.9 2015 5.4 2007 4.7 2017 3.6 1998 2.1 1972 0.3 1990 0.0 1993 0.0 1968 0.0 1969 0.0 1998 0.2 1968 1.8 2000 4.9 1971 21.8 2017 8.5 2019 0.0 2003 3.2 2006 37.6 2000 5.1 1983 4.6 2002 3.5 1999 1.9 2007 0.3 1976 0.0 1992 0.0 1967 0.0 1968 0.0 1994 0.2 1963 1.8 1984 4.4 2006 20.2 1998 8.5 1994 0.0 2002 3.0 2015 37.2 2007 5.0 1988 4.3 1995 3.4 1997 1.9 1992 0.2 2014 0.0 1990 0.0 1966 0.0 1967 0.0 1992 0.1 2013 1.4 2014 4.3 1977 18.5 2016 8.0 2009 0.0 1997 2.5 2000 37.0 2011 4.8 2008 4.2 1997 3.2 1961 1.7 1993 0.2 1999 0.0 1980 0.0 1965 0.0 1966 0.0 1985 0.1 2006 1.4 2011 3.5 2018 17.6 2007 7.6 1999 0.0 1995 2.4 1984 37.0 1974 4.8 1975 3.7 1998 3.0 2017 1.6 1961 0.2 1998 0.0 1979 0.0 1964 0.0 1965 0.0 1981 0.1 2005 1.3 2009 2.9 2013 17.0 1975 7.2 2007 0.0 1994 2.0 2014 35.7 1999 4.7 2005 3.1 2011 2.9 2019 1.3 1987 0.2 1986 0.0 1976 0.0 1963 0.0 1963 0.0 1980 0.1 2004 1.1 1997 2.6 1974 16.8 1990 6.8 2017 0.0 1992 2.0 1994 33.3 1990 3.6 2014 2.8 1990 2.7 1994 1.0 2014 0.2 1970 0.0 1970 0.0 1962 0.0 1962 0.0 1978 0.1 1989 0.8 1994 1.7 1988 11.5 1989 5.9 2014 0.0 1990 1.9 2009 31.6 2002 3.6 1990 2.8 1961 2.6 2012 0.7 2004 0.1 2009 0.0 1963 0.0 1961 0.0 1961 0.0 1968 0.0 2001 0.6 2002 1.3 2015 9.0 2014 5.6 1961 0.0 1963 1.8 2011 23.2 2014 3.6 1989 2.5 2014 2.1 1992 0.5 2011 0.1 1964 4.3 1992