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