Northern Ireland Mean Temperature (Degrees C) Areal Series, starting from 1914 Allowances have been made for topographic, coastal and urban effects where relationships are found to exist. The 30 year averages have been derived from 1km grids, whereas the rest of the values have been derived from 5km grids. Seasons: Winter=Dec-Feb, Spring=Mar-May, Summer=June-Aug, Autumn=Sept-Nov. (Winter: Year refers to Jan/Feb). Data is provisional from February 2008 & Winter 2007/2008. Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC WIN SPR SUM AUT ANN 1914 3.9 5.3 4.5 8.4 9.3 12.6 14.0 14.3 11.9 9.7 5.9 2.8 --- 7.41 13.62 9.19 8.56 1915 3.0 2.8 4.9 7.4 8.9 12.5 13.0 13.3 12.3 8.5 3.9 3.8 2.87 7.04 12.91 8.24 7.88 1916 6.2 2.9 3.0 6.8 9.2 10.5 13.7 15.0 12.5 9.5 6.3 2.7 4.34 6.28 13.08 9.44 8.20 1917 2.2 3.0 3.7 4.5 10.1 12.2 14.5 14.1 12.5 6.6 7.3 3.0 2.60 6.13 13.61 8.75 7.82 1918 3.4 6.0 5.4 6.2 10.7 12.2 13.4 14.2 9.5 7.8 5.7 6.0 4.07 7.45 13.30 7.67 8.40 1919 3.2 2.7 2.8 6.9 11.3 11.8 12.7 13.7 11.1 8.2 3.0 4.3 3.97 6.99 12.77 7.41 7.66 1920 4.0 5.4 5.2 6.2 9.7 12.5 12.4 12.2 11.9 10.0 7.5 3.6 4.52 7.02 12.32 9.78 8.36 1921 6.0 5.2 5.7 7.2 9.4 13.0 15.7 12.8 12.4 11.2 6.7 6.7 4.92 7.41 13.86 10.11 9.36 1922 4.2 4.9 4.6 4.2 10.9 11.6 11.8 11.9 10.8 8.3 6.6 5.1 5.27 6.56 11.77 8.56 7.91 1923 5.5 5.4 6.2 6.4 7.8 11.5 14.8 12.9 10.8 8.5 3.3 4.3 5.34 6.76 13.10 7.55 8.14 1924 4.8 4.2 3.9 5.8 9.4 12.2 13.3 12.9 11.1 8.7 7.3 6.1 4.43 6.37 12.80 9.05 8.33 1925 5.2 3.7 5.0 6.0 9.1 12.9 14.3 13.9 10.6 9.8 4.8 3.5 5.05 6.71 13.68 8.39 8.25 1926 4.8 5.8 5.8 8.5 8.9 12.1 14.9 14.5 12.7 7.4 5.3 4.3 4.66 7.70 13.83 8.44 8.75 1927 4.3 4.8 6.3 6.9 9.5 10.0 13.8 14.0 10.9 9.8 5.9 3.5 4.48 7.56 12.62 8.86 8.32 1928 4.5 5.4 5.0 6.8 9.8 10.9 13.7 13.0 11.2 9.3 6.6 4.4 4.44 7.22 12.53 9.03 8.39 1929 2.9 3.3 6.5 6.3 9.8 11.7 14.0 13.3 13.5 8.4 5.9 4.4 3.55 7.53 13.01 9.25 8.35 1930 3.6 2.1 4.5 7.2 9.8 12.8 13.5 13.3 12.0 9.1 5.3 4.3 3.39 7.19 13.20 8.78 8.16 1931 3.3 3.7 4.3 6.9 9.8 12.4 13.5 12.9 10.7 8.4 6.7 6.2 3.77 7.02 12.94 8.63 8.27 1932 6.3 4.1 5.0 5.8 9.5 13.2 14.2 14.0 11.0 7.9 6.2 5.5 5.54 6.74 13.80 8.35 8.55 1933 2.8 3.8 6.4 8.3 9.9 13.2 15.5 14.9 12.9 9.3 5.5 4.0 4.03 8.20 14.54 9.24 8.90 1934 5.0 4.8 4.3 6.0 9.6 13.2 15.7 13.1 12.1 8.7 5.9 7.2 4.58 6.64 14.00 8.86 8.81 1935 4.8 5.0 6.2 6.9 9.6 12.4 14.3 14.3 11.7 8.3 5.0 2.6 5.69 7.56 13.67 8.33 8.44 1936 2.5 3.0 6.1 5.7 9.8 12.6 13.5 14.7 12.7 9.1 4.9 4.9 2.68 7.18 13.62 8.88 8.30 1937 4.5 4.2 2.8 8.0 10.5 12.2 13.6 14.6 11.7 8.2 6.1 3.1 4.54 7.08 13.46 8.65 8.30 1938 4.7 4.8 8.5 7.1 9.2 11.9 13.1 13.6 12.5 9.2 7.6 3.7 4.19 8.27 12.87 9.77 8.85 1939 3.0 5.7 5.6 7.6 10.3 12.8 13.5 14.2 12.3 7.8 7.4 3.6 4.07 7.86 13.50 9.15 8.66 1940 1.3 3.8 5.3 7.7 10.9 14.4 12.9 14.1 11.2 8.6 5.9 4.0 2.88 7.97 13.79 8.57 8.35 1941 0.9 3.1 4.7 5.6 8.6 13.3 14.2 13.1 13.9 9.9 6.0 5.4 2.62 6.31 13.55 9.96 8.26 1942 3.7 2.6 5.1 8.0 9.6 12.7 13.6 14.1 11.6 8.7 5.3 6.2 3.92 7.53 13.44 8.54 8.45 1943 4.9 6.0 6.5 9.2 10.0 12.9 14.3 13.5 11.7 9.7 6.4 4.8 5.68 8.55 13.59 9.25 9.17 1944 6.2 4.0 5.1 9.3 10.3 12.1 14.6 14.8 11.2 8.3 5.6 4.4 5.04 8.21 13.84 8.40 8.84 1945 0.7 6.8 8.2 9.0 10.3 12.6 14.6 14.5 13.1 10.5 7.5 6.0 3.86 9.14 13.87 10.36 9.47 1946 3.7 5.4 5.5 8.3 9.5 11.8 13.8 12.6 12.5 9.3 7.0 3.3 4.99 7.76 12.71 9.59 8.56 1947 3.0 -0.5 2.5 7.3 11.0 13.1 14.0 16.6 12.8 10.7 6.7 4.9 2.03 6.93 14.56 10.08 8.57 1948 3.5 4.6 7.9 8.2 9.6 11.9 13.7 13.6 12.4 9.5 7.9 5.3 4.34 8.57 13.08 9.92 9.02 1949 5.7 5.7 5.8 8.7 9.7 13.8 14.9 14.6 13.9 10.6 6.4 5.1 5.57 8.06 14.44 10.26 9.58 1950 5.3 4.0 7.1 6.6 10.4 14.0 14.1 13.5 11.3 8.8 4.4 1.4 4.83 8.05 13.86 8.18 8.44 1951 3.4 2.5 3.8 5.9 8.6 12.4 14.2 13.3 12.6 10.0 7.1 5.1 2.42 6.12 13.31 9.89 8.27 1952 2.3 3.8 6.3 8.5 11.2 12.3 14.7 14.0 9.9 8.5 4.7 3.4 3.74 8.68 13.70 7.72 8.33 1953 4.3 5.3 5.2 6.2 11.6 12.8 13.7 14.0 13.3 9.4 7.5 6.8 4.29 7.68 13.51 10.07 9.20 1954 4.0 3.2 5.5 7.3 10.1 11.9 12.6 12.8 10.9 10.2 5.8 6.4 4.72 7.61 12.45 8.96 8.43 1955 2.5 1.2 3.4 8.8 8.9 12.0 15.5 16.1 13.2 8.6 7.5 5.3 3.44 7.03 14.58 9.77 8.63 1956 3.1 1.8 6.4 6.9 10.7 11.7 14.0 12.0 12.6 9.2 6.8 6.1 3.45 8.00 12.57 9.53 8.46 1957 4.6 4.2 8.2 7.7 9.5 13.3 13.9 13.7 11.3 9.4 6.1 4.9 4.99 8.47 13.62 8.91 8.92 1958 3.6 4.3 3.4 7.1 9.1 12.1 14.3 13.9 13.6 10.0 7.4 4.2 4.28 6.52 13.45 10.33 8.60 1959 1.5 5.3 6.8 7.8 11.5 13.4 14.7 15.0 13.3 11.4 6.1 4.8 3.60 8.75 14.38 10.26 9.33 1960 3.9 2.9 6.0 8.4 11.8 14.3 13.6 13.2 11.8 9.4 6.3 2.9 3.88 8.74 13.68 9.16 8.72 1961 3.5 6.6 8.1 8.0 9.8 12.5 12.8 13.1 12.6 9.2 5.7 2.4 4.27 8.68 12.82 9.17 8.72 1962 3.8 4.7 2.8 7.0 9.2 11.8 13.1 12.8 11.1 10.0 5.7 4.1 3.59 6.33 12.57 8.94 8.02 1963 -0.3 0.7 5.9 7.4 9.0 13.3 13.3 12.9 11.6 10.1 6.4 3.3 1.52 7.40 13.18 9.35 7.83 1964 4.8 4.3 4.7 7.9 11.4 12.1 13.9 13.5 12.5 8.6 6.8 3.7 4.15 7.99 13.21 9.29 8.70 1965 2.7 3.4 4.7 7.3 10.3 12.7 12.4 13.0 10.8 10.2 3.9 4.0 3.24 7.39 12.71 8.31 7.96 1966 3.3 4.5 6.6 5.9 9.9 13.6 13.4 13.0 12.8 8.5 4.7 4.7 3.92 7.45 13.33 8.67 8.43 1967 4.7 4.8 5.7 7.4 8.4 12.5 13.9 13.4 12.1 8.7 5.5 4.6 4.75 7.16 13.29 8.78 8.50 1968 4.7 1.7 5.5 7.0 8.2 13.0 13.1 14.0 12.2 11.4 6.1 3.8 3.73 6.91 13.35 9.93 8.42 1969 4.1 0.9 3.1 6.6 9.5 12.4 14.5 14.4 12.2 11.9 3.9 3.9 3.00 6.38 13.76 9.37 8.16 1970 3.5 2.3 4.0 6.0 11.3 14.6 12.9 14.3 12.3 9.7 6.3 4.5 3.27 7.11 13.90 9.42 8.51 1971 4.7 5.0 5.2 7.2 10.0 11.2 14.5 13.7 13.2 10.9 6.5 6.4 4.72 7.44 13.17 10.18 9.06 1972 3.2 4.0 5.2 7.5 9.0 10.2 13.8 12.7 10.8 10.0 5.3 5.4 4.55 7.20 12.26 8.74 8.11 1973 5.1 3.9 5.7 6.5 9.5 13.0 14.1 14.4 12.5 8.7 5.7 4.8 4.83 7.24 13.83 8.97 8.69 1974 5.4 4.8 5.0 7.8 9.6 11.9 13.1 13.4 10.1 7.4 5.2 6.7 5.02 7.46 12.80 7.56 8.39 1975 5.4 4.8 4.5 7.6 9.0 13.0 15.1 15.7 11.3 10.0 6.1 5.5 5.66 7.01 14.61 9.14 9.02 1976 5.3 4.6 5.0 7.7 9.7 14.3 15.5 15.3 12.0 8.6 5.4 1.8 5.13 7.43 15.02 8.66 8.77 1977 2.4 3.5 6.2 6.4 9.2 11.5 14.9 13.7 11.4 10.8 4.5 5.6 2.57 7.28 13.42 8.93 8.40 1978 3.1 2.8 5.5 6.1 10.7 11.9 13.2 13.6 12.7 11.2 7.5 3.8 3.87 7.42 12.92 10.48 8.55 1979 0.5 2.0 3.5 6.1 7.7 12.3 14.0 12.9 11.7 10.2 6.2 4.3 2.12 5.78 13.07 9.39 7.66 1980 2.4 4.7 4.1 8.0 10.6 12.0 13.1 14.1 13.0 8.2 6.3 5.3 3.80 7.56 13.10 9.17 8.50 1981 5.1 3.8 6.6 7.6 10.0 11.9 13.5 14.5 12.6 6.5 6.8 1.6 4.73 8.05 13.30 8.63 8.39 1982 3.5 4.8 5.4 8.1 9.8 13.3 14.6 13.6 11.9 9.0 5.8 3.9 3.24 7.78 13.85 8.89 8.66 1983 5.3 2.7 6.2 5.5 9.0 12.5 16.5 15.9 12.0 9.4 7.1 6.3 4.01 6.92 15.00 9.51 9.08 1984 2.4 4.3 4.4 7.9 9.1 13.1 14.8 15.3 11.8 9.2 5.7 5.0 4.32 7.14 14.42 8.92 8.60 1985 0.8 3.5 4.4 7.7 9.3 11.3 13.9 12.5 12.9 10.0 3.7 5.3 3.07 7.12 12.59 8.87 7.96 1986 3.1 0.6 4.7 4.9 9.3 13.1 13.6 11.5 10.6 9.5 6.5 4.9 3.06 6.32 12.73 8.87 7.73 1987 2.6 3.6 4.2 8.6 9.4 10.9 14.5 13.9 11.5 7.7 6.4 5.5 3.69 7.39 13.13 8.52 8.26 1988 3.9 4.1 5.8 7.9 10.2 13.5 13.1 13.3 11.8 9.3 5.6 7.2 4.52 7.97 13.34 8.91 8.84 1989 6.4 5.0 5.7 5.7 10.8 12.7 16.3 14.1 12.0 10.4 6.1 3.7 6.25 7.43 14.38 9.50 9.11 1990 5.4 5.1 7.5 7.2 11.4 12.0 14.8 15.1 11.2 10.2 6.0 4.0 4.72 8.70 13.97 9.13 9.18 1991 2.9 2.5 6.7 7.2 10.3 11.0 15.6 15.0 12.9 8.8 5.9 5.6 3.15 8.10 13.90 9.19 8.76 1992 4.6 5.2 6.6 7.3 11.4 14.2 14.1 13.0 10.9 6.8 6.3 3.9 5.16 8.45 13.78 7.99 8.71 1993 5.0 6.0 5.8 8.3 9.7 13.1 13.3 12.8 11.3 7.0 5.2 4.1 4.92 7.97 13.04 7.82 8.48 1994 4.2 2.9 6.0 6.8 9.3 11.8 14.6 13.5 11.4 9.5 8.9 5.5 3.76 7.38 13.30 9.91 8.73 1995 3.9 5.1 4.5 8.0 9.9 13.4 15.9 17.1 12.4 11.4 7.6 2.9 4.82 7.47 15.47 10.47 9.35 1996 5.3 2.9 4.6 7.7 8.0 12.6 14.2 14.1 12.8 10.3 5.0 3.5 3.70 6.78 13.64 9.36 8.44 1997 3.9 5.2 7.2 8.5 10.3 12.0 14.9 16.1 12.4 9.7 7.8 5.9 4.19 8.66 14.38 9.99 9.53 1998 4.6 7.6 7.2 6.7 11.2 12.3 13.7 14.2 13.1 9.4 6.3 5.5 5.98 8.38 13.38 9.60 9.32 1999 4.2 5.1 6.4 8.5 11.3 11.9 15.5 14.3 13.4 10.0 7.0 4.1 4.93 8.71 13.93 10.12 9.32 2000 4.8 5.3 7.0 6.4 10.7 12.8 14.4 14.8 13.0 8.8 5.4 4.5 4.71 8.04 14.02 9.09 9.02 2001 3.1 3.9 4.3 6.9 11.6 12.2 14.3 14.3 12.6 11.7 7.8 4.1 3.82 7.60 13.63 10.72 8.93 2002 6.1 5.6 6.8 8.1 10.6 12.8 13.6 14.9 12.8 8.7 7.8 4.9 5.24 8.51 13.78 9.75 9.41 2003 4.2 4.2 6.7 9.0 10.2 13.6 15.6 15.6 12.7 8.5 7.2 5.1 4.45 8.63 14.96 9.43 9.41 2004 4.8 4.6 6.1 8.4 10.9 13.9 13.8 15.3 13.2 8.5 7.9 5.8 4.83 8.46 14.36 9.83 9.44 2005 5.9 4.5 7.3 7.8 9.7 14.1 15.0 14.5 13.3 11.1 6.2 5.3 5.41 8.27 14.55 10.20 9.59 2006 4.7 4.5 4.9 7.3 10.4 14.2 16.7 14.6 14.2 11.5 6.8 5.6 4.87 7.55 15.17 10.83 9.65 2007 6.0 5.1 6.1 10.2 10.7 13.5 13.9 14.1 12.6 11.1 8.1 5.7 5.59 8.98 13.85 10.59 9.78 2008 5.2 5.5 5.4 7.5 12.2 12.5 14.6 14.6 5.46 8.38 13.93 MIN -0.3 -0.5 2.5 4.2 7.7 10.0 11.8 11.5 9.5 6.5 3.0 1.4 1.52 5.78 11.77 7.41 7.66 MAX 6.4 7.6 8.5 10.2 12.2 14.6 16.7 17.1 14.2 11.9 8.9 7.2 6.25 9.14 15.47 10.83 9.78 6190 3.7 3.7 5.2 7.0 9.6 12.4 14.0 13.8 11.9 9.5 5.8 4.5 3.97 7.28 13.40 9.07 8.45 7100 4.0 4.2 5.6 7.2 9.8 12.3 14.4 14.1 12.0 9.3 6.1 4.7 4.29 7.55 13.65 9.16 8.68