Scotland_W 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 13.7 4.0 2.0 3.1 0.7 0.1 0.0 0.0 0.0 0.3 6.0 19.1 --- 5.8 0.2 6.3 49.0 1962 9.5 9.6 17.7 6.5 1.1 0.3 0.0 0.1 0.0 1.6 8.9 13.1 38.2 25.2 0.4 10.5 68.4 1963 24.1 24.0 8.0 3.5 0.8 0.0 0.0 0.0 0.1 0.3 7.2 12.7 61.2 12.4 0.0 7.6 80.8 1964 8.4 10.1 10.2 2.5 0.1 0.2 0.0 0.3 0.4 2.0 5.8 14.4 31.2 12.7 0.5 8.3 54.4 1965 16.3 14.8 12.9 4.4 1.1 0.1 0.0 0.0 0.1 1.3 14.2 12.1 45.5 18.4 0.1 15.7 77.5 1966 15.4 11.9 5.5 8.9 0.8 0.0 0.0 0.1 0.0 2.6 9.9 9.8 39.4 15.2 0.2 12.5 64.9 1967 10.0 7.9 5.4 5.0 2.6 0.0 0.0 0.0 0.1 1.2 6.5 11.8 27.7 13.1 0.1 7.7 50.6 1968 11.8 21.6 9.7 8.6 3.3 0.0 0.0 0.0 0.1 0.3 6.9 15.0 45.1 21.7 0.1 7.2 77.4 1969 9.2 20.2 19.4 8.6 1.3 0.1 0.0 0.1 0.1 0.2 15.8 14.5 44.4 29.2 0.2 16.1 89.4 1970 11.2 18.7 15.5 10.6 0.1 0.0 0.0 0.0 0.1 0.4 4.9 9.8 44.5 26.2 0.1 5.4 71.4 1971 9.0 7.2 10.1 5.0 1.3 0.1 0.1 0.0 0.5 2.8 10.4 4.9 26.0 16.4 0.2 13.8 51.5 1972 10.1 8.8 8.5 2.3 0.5 0.1 0.0 0.0 1.4 1.9 9.6 7.8 23.8 11.3 0.1 12.9 50.9 1973 9.0 12.0 9.1 6.9 1.6 0.2 0.0 0.0 0.1 4.3 9.3 11.1 28.8 17.6 0.2 13.7 63.5 1974 6.2 6.8 9.0 7.1 1.4 0.1 0.0 0.0 1.6 2.4 5.3 3.2 24.0 17.5 0.2 9.3 43.2 1975 8.5 9.1 14.3 6.3 3.8 0.6 0.0 0.0 0.9 1.2 6.1 7.4 20.8 24.3 0.6 8.2 58.1 1976 9.8 8.6 10.5 3.7 0.2 0.0 0.0 0.0 0.1 0.6 6.0 18.7 25.7 14.4 0.1 6.8 58.3 1977 17.2 10.8 4.8 6.1 3.2 0.1 0.0 0.1 0.4 0.1 10.0 5.3 46.7 14.1 0.2 10.5 58.1 1978 17.1 17.0 6.1 7.8 0.8 0.2 0.0 0.0 0.0 0.1 5.1 12.1 39.5 14.7 0.2 5.2 66.4 1979 24.9 20.4 16.6 5.6 6.1 0.1 0.0 0.0 0.9 0.6 7.1 11.2 57.4 28.3 0.1 8.5 93.4 1980 16.2 7.5 12.8 3.3 1.7 0.1 0.0 0.0 0.0 3.4 8.2 9.8 35.0 17.8 0.1 11.7 63.1 1981 13.4 15.2 7.2 7.7 1.6 0.1 0.0 0.0 0.1 5.5 3.1 21.0 38.3 16.5 0.1 8.6 74.8 1982 12.8 8.0 8.0 3.9 3.5 0.1 0.0 0.1 0.2 0.8 5.6 12.9 41.8 15.4 0.1 6.6 55.9 1983 6.2 16.9 5.3 11.0 0.7 0.1 0.0 0.0 0.4 2.9 6.5 5.8 36.0 17.0 0.1 9.8 55.7 1984 19.1 10.2 10.0 6.3 3.5 0.1 0.0 0.0 0.1 0.5 3.4 5.9 35.0 19.9 0.1 4.0 59.1 1985 23.3 13.7 12.7 2.9 1.1 0.3 0.0 0.0 0.0 1.1 16.3 8.1 43.0 16.7 0.3 17.4 79.5 1986 15.9 22.4 9.1 10.1 0.2 0.1 0.0 0.1 2.1 0.4 4.8 8.2 46.4 19.4 0.2 7.3 73.4 1987 19.3 14.7 14.9 1.9 1.4 0.1 0.0 0.0 0.4 2.7 4.2 10.2 42.1 18.3 0.1 7.3 69.9 1988 9.4 9.4 9.0 4.7 0.8 0.1 0.0 0.0 0.3 2.6 6.3 1.4 29.0 14.5 0.1 9.2 44.0 1989 2.1 7.4 7.6 7.7 1.0 0.4 0.0 0.0 0.2 0.3 5.7 14.0 10.9 16.3 0.5 6.2 46.5 1990 4.3 4.7 3.0 4.4 0.4 0.0 0.0 0.0 0.1 0.3 7.3 11.4 23.1 7.8 0.0 7.8 36.0 1991 15.5 17.9 5.8 3.7 1.3 0.7 0.0 0.0 0.5 0.6 6.4 6.8 44.7 10.8 0.7 7.5 59.1 1992 12.1 7.0 3.8 2.2 0.5 0.0 0.0 0.0 0.0 6.9 5.8 11.7 25.9 6.4 0.0 12.7 50.0 1993 7.1 5.3 7.5 1.6 1.5 0.0 0.0 0.0 1.2 6.6 12.2 13.6 24.0 10.6 0.1 20.0 56.7 1994 9.8 14.1 5.0 6.1 2.3 0.0 0.0 0.0 0.1 1.3 0.8 7.2 37.4 13.3 0.0 2.1 46.6 1995 14.9 8.0 13.9 4.5 4.3 0.0 0.0 0.0 0.6 0.4 4.5 15.9 30.2 22.6 0.1 5.5 67.0 1996 6.5 17.8 10.3 3.9 4.8 0.1 0.0 0.0 0.1 0.4 12.8 14.6 40.2 19.0 0.1 13.3 71.4 1997 16.0 5.9 4.0 2.9 2.6 0.1 0.0 0.0 0.3 3.5 1.4 7.1 36.5 9.4 0.1 5.1 43.5 1998 11.3 3.1 6.2 7.6 0.5 0.3 0.0 0.0 0.0 2.6 6.9 8.6 21.5 14.3 0.3 9.6 47.2 1999 8.2 9.4 6.7 4.5 0.3 0.1 0.0 0.1 0.0 1.0 4.8 12.1 26.2 11.4 0.2 5.9 47.3 2000 9.1 7.2 5.1 7.0 0.5 0.1 0.0 0.0 0.0 0.9 3.6 11.0 28.4 12.6 0.1 4.6 44.6 2001 14.7 14.1 14.7 5.8 1.6 0.1 0.0 0.0 0.1 0.1 4.8 15.6 39.7 22.1 0.1 5.0 71.6 2002 6.3 6.6 6.7 3.7 0.6 0.0 0.0 0.0 0.1 4.7 1.6 7.8 28.6 11.0 0.0 6.4 38.3 2003 13.6 12.8 7.6 3.0 0.4 0.0 0.0 0.0 0.1 4.7 1.9 10.8 34.3 11.0 0.0 6.7 55.0 2004 10.0 13.8 8.2 1.0 0.5 0.0 0.0 0.0 0.0 0.4 5.0 8.3 34.6 9.7 0.1 5.4 47.3 2005 6.9 11.2 8.4 2.4 2.4 0.0 0.0 0.0 0.1 0.1 9.1 9.5 26.3 13.2 0.0 9.4 50.2 2006 9.3 11.3 13.6 4.8 0.8 0.0 0.0 0.0 0.0 0.1 2.2 3.6 30.1 19.3 0.0 2.4 45.9 2007 6.6 7.5 6.3 1.9 0.5 0.0 0.0 0.0 0.8 0.8 4.3 9.2 17.6 8.7 0.1 6.0 38.0 2008 7.7 8.7 8.7 6.3 0.3 0.1 0.0 0.0 0.1 3.2 6.2 15.6 25.6 15.3 0.1 9.5 56.9 2009 12.3 12.4 6.3 1.7 0.4 0.2 0.0 0.0 0.1 0.6 2.5 19.4 40.3 8.4 0.3 3.2 55.9 2010 18.4 20.3 11.7 4.8 3.3 0.0 0.0 0.0 0.7 2.8 12.3 23.8 58.1 19.8 0.1 15.8 98.2 2011 15.5 5.1 8.8 0.5 0.5 0.1 0.0 0.0 0.1 0.4 1.2 7.8 44.5 9.8 0.1 1.7 40.1 2012 7.8 8.0 2.9 7.2 3.3 0.2 0.0 0.1 0.3 4.1 5.1 11.1 23.6 13.5 0.3 9.6 50.3 2013 10.9 16.1 18.2 8.4 1.4 0.0 0.0 0.0 0.1 0.3 8.5 3.0 38.2 28.0 0.1 8.8 66.9 2014 5.1 3.6 4.4 1.5 0.2 0.0 0.0 0.1 0.0 0.6 1.1 9.1 11.7 6.1 0.1 1.7 25.7 2015 11.9 11.1 7.8 4.9 1.7 0.1 0.0 0.0 0.1 0.7 2.8 3.3 32.2 14.4 0.1 3.6 44.5 2016 8.7 13.8 7.1 7.1 0.8 0.0 0.0 0.0 0.1 0.3 11.1 3.1 25.8 15.1 0.1 11.5 52.2 2017 11.9 6.9 6.2 3.0 0.6 0.0 0.0 0.0 0.1 0.7 7.4 12.8 22.0 9.9 0.1 8.2 49.8 2018 11.3 14.6 13.0 3.3 0.7 0.1 0.0 0.0 0.3 3.7 2.8 5.0 38.7 17.1 0.1 6.8 54.9 2019 13.6 7.3 4.1 3.8 2.8 26.0 10.7