BIG DELTA AP (PABI) Monthly Totals/Averages Maximum Temperature (degrees F) Years: 1937-2010 Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual 1937 - - - - - - - - 46.5 - - - 46.5 1938 - - - - - - - - - - - - - 1939 - - - - - - - - - - - - - 1940 - - - - - - - - - - - - - 1941 - - - 50.5 58.6 72.8 68.2 68.9 52.2 30.5 9.3 3.6 46.1 1942 16.0 20.1 19.8 45.0 66.0 70.9 70.7 66.4 58.8 33.9 12.1 -12.7 38.9 1943 -10.8 20.5 20.8 42.4 57.8 70.6 69.5 61.6 52.7 37.6 26.5 19.5 39.1 1944 12.1 24.3 21.9 38.9 58.1 68.4 69.1 61.7 49.1 37.1 14.8 13.1 39.1 1945 16.9 17.6 21.1 32.5 51.5 62.5 64.9 62.2 50.7 33.9 3.2 7.7 35.4 1946 7.0 11.4 15.9 39.0 57.8 71.5 70.5 63.2 50.0 40.2 7.2 -9.4 35.4 1947 -7.8 16.5 31.2 41.9 59.9 64.3 73.5 59.5 49.1 32.3 22.9 16.9 38.3 1948 11.0 7.8 18.9 30.4 55.5 67.8 68.2 58.6 47.9 33.1 5.6 -6.7 33.2 1949 3.6 3.5 32.8 34.4 52.3 56.2 66.1 65.9 58.3 31.6 22.5 -0.9 35.5 1950 7.5 -7.7 28.7 37.6 54.9 68.9 70.2 67.7 55.2 31.1 4.2 6.5 35.4 1951 -7.3 7.5 13.5 43.5 59.5 65.0 69.8 68.4 54.8 27.3 18.3 1.8 35.2 1952 -7.1 10.4 21.1 39.0 48.3 65.6 66.4 62.2 48.7 37.3 29.0 11.4 36.0 1953 -7.5 20.0 23.9 47.5 59.5 68.9 71.9 63.5 53.3 31.5 14.1 9.6 38.0 1954 0.3 0.2 27.1 36.7 59.4 67.6 66.6 66.2 51.5 38.7 23.6 -9.3 35.7 1955 12.5 3.8 24.9 34.2 53.2 62.4 71.4 60.8 52.1 29.4 0.5 -1.9 33.6 1956 -8.8 1.6 20.8 41.1 56.4 64.7 70.3 63.5 50.4 24.5 8.2 -7.9 32.1 1957 13.5 11.1 30.0 41.7 56.9 74.1 69.0 70.8 52.5 36.5 25.5 -4.2 39.8 1958 12.8 12.8 30.2 49.3 58.7 73.5 72.2 66.2 50.7 23.1 11.1 6.3 38.9 1959 -7.1 20.3 9.9 36.6 55.5 69.9 63.5 62.8 51.0 31.0 17.8 3.5 34.6 1960 9.6 22.3 17.9 38.4 63.6 64.3 68.8 63.3 47.8 32.0 11.1 18.7 38.2 1961 12.3 7.0 15.7 36.0 57.5 64.6 67.8 63.4 50.8 26.5 8.1 -15.1 32.9 1962 7.7 17.3 21.5 38.2 51.1 65.3 71.2 65.2 48.4 36.9 15.5 5.7 37.0 1963 10.3 16.4 21.8 36.4 58.2 60.6 67.8 66.5 55.4 33.0 -1.2 18.7 37.0 1964 2.8 16.7 14.4 35.0 46.3 67.9 67.2 63.6 53.8 36.1 14.5 -14.3 33.7 1965 1.1 0.2 38.3 40.0 52.6 62.4 67.1 62.7 56.6 24.1 14.7 0.7 35.0 1966 -6.5 10.9 13.4 39.1 49.8 68.5 69.0 63.9 55.4 27.7 11.1 0.2 33.5 1967 1.1 10.0 24.2 41.0 52.6 68.9 66.5 66.6 54.0 30.4 22.7 7.7 37.2 1968 1.1 14.4 32.5 40.8 56.5 66.5 73.9 66.3 49.6 28.4 13.9 -3.0 36.7 1969 -16.6 11.1 27.3 45.8 58.4 75.4 66.1 58.2 58.8 44.4 13.9 23.1 38.8 1970 -4.3 23.7 35.9 38.7 59.4 62.5 68.5 64.1 44.4 25.1 19.6 3.2 36.7 1971 -14.4 12.0 12.2 35.5 52.4 70.5 68.8 63.0 50.7 30.1 8.7 3.3 32.7 1972 -8.8 1.2 12.4 31.1 54.8 66.4 72.5 67.8 49.0 34.7 16.2 5.5 33.6 1973 -8.1 12.3 25.9 42.9 56.9 66.0 69.0 60.2 54.6 30.3 4.6 10.8 35.4 1974 -6.1 -6.5 20.4 44.0 59.8 64.8 69.1 66.1 58.4 28.5 12.8 1.1 34.4 1975 -5.1 8.3 24.8 38.5 58.8 65.2 69.6 62.1 53.6 28.8 0.6 -3.8 33.5 1976 4.2 2.1 25.2 45.3 55.5 67.5 72.3 68.5 56.3 32.5 30.0 10.4 39.2 1977 22.5 25.9 19.8 39.6 56.2 66.7 72.1 72.7 54.3 33.3 2.7 -5.5 38.3 1978 14.0 18.4 29.9 46.2 61.3 64.5 72.5 68.3 54.7 31.7 17.6 10.1 40.8 1979 5.4 -8.8 25.6 44.5 62.5 65.4 70.5 68.9 57.9 41.8 32.8 -2.7 38.7 1980 0.3 26.3 29.8 48.9 62.0 66.4 70.9 65.3 51.4 36.6 19.9 -15.0 38.6 1981 30.6 18.0 38.6 40.1 65.0 65.2 65.7 64.3 50.9 31.8 18.1 5.4 41.1 1982 -7.1 3.4 21.6 34.4 51.7 65.4 68.3 62.1 54.9 19.4 11.6 12.6 33.2 1983 -2.5 12.4 22.2 44.2 58.0 66.6 68.2 59.0 45.5 28.2 18.3 3.2 35.3 1984 7.1 0.8 34.4 40.6 56.9 67.2 66.0 60.6 56.0 30.6 7.6 7.7 36.3 1985 26.8 2.3 27.2 29.5 54.0 61.6 68.3 62.0 50.1 23.1 6.9 22.9 36.2 1986 13.1 15.8 17.7 31.0 53.5 68.3 68.9 61.5 53.5 36.0 9.9 21.4 37.6 1987 13.6 17.6 24.7 42.5 58.4 66.5 68.7 65.2 50.5 39.0 13.2 8.9 39.1 1988 8.6 16.1 27.4 42.4 58.9 68.1 71.2 65.8 52.8 26.6 8.1 15.5 38.5 1989 -13.3 16.4 19.8 47.6 56.0 67.2 73.2 69.6 55.8 31.2 4.5 20.0 37.3 1990 3.2 -4.3 30.7 48.3 64.1 70.2 77.1 68.2 55.9 30.8 3.8 7.6 38.0 1991 11.8 11.8 29.2 47.5 61.7 73.8 69.5 64.1 60.0 34.2 11.5 10.9 40.5 1992 11.3 11.0 31.1 38.4 51.6 68.6 71.9 69.1 39.3 32.6 24.1 6.2 37.9 1993 9.4 16.3 33.9 53.0 64.7 71.7 75.0 65.0 54.3 39.0 19.5 16.2 43.2 1994 10.0 5.3 22.4 46.5 60.7 67.1 74.0 72.7 54.2 29.9 7.8 2.7 37.8 1995 6.9 14.3 16.8 50.1 65.0 69.9 72.1 63.7 60.5 35.4 7.9 7.3 39.2 1996 -7.8 8.4 27.0 45.6 59.9 68.9 71.4 63.5 51.8 23.3 10.5 -1.2 35.1 1997 0.5 27.5 18.4 46.0 58.5 71.2 72.2 66.0 58.4 22.3 22.5 13.8 39.8 1998 2.2 19.1 31.7 47.8 58.1 65.0 69.0 60.1 53.0 34.2 14.1 1.7 38.0 1999 -1.8 -2.0 26.0 42.1 52.3 69.0 68.2 65.1 52.0 26.9 11.9 5.3 34.6 2000 4.5 25.0 32.1 41.5 51.1 67.9 66.4 56.2 46.6 29.8 24.0 15.2 38.3 2001 22.4 20.4 24.7 43.8 51.7 68.6 64.8 64.9 56.3 28.0 12.3 2.5 38.4 2002 16.7 16.8 22.6 34.4 59.4 65.8 68.3 61.2 53.9 39.5 29.4 14.5 40.2 2003 10.9 25.9 21.5 44.6 54.9 68.8 69.0 64.7 46.9 40.2 13.4 6.2 38.9 2004 -3.0 21.6 19.2 46.0 60.8 74.9 72.6 72.1 45.9 34.1 22.3 12.7 39.9 2005 6.3 14.8 33.1 45.4 63.9 68.5 69.1 66.5 53.5 33.5 2.4 25.9 40.2 2006 0.2 19.8 16.2 39.0 58.1 64.2 68.4 62.4 58.2 38.0 -1.9 11.5 36.2 2007 6.7 8.4 8.8 46.8 58.2 69.9 70.7 68.6 54.0 28.9 24.5 7.0 37.7 2008 3.3 10.4 28.2 38.6 56.6 65.3 64.0 60.8 53.3 22.7 12.0 2.1 34.8 2009 0.9 18.1 16.8 43.4 59.2 65.9 74.1 60.9 54.1 36.4 12.5 11.5 37.8 2010 4.5 19.5 27.0 45.4 62.0 64.7 69.0 66.8 54.4 33.7 20.5 -7.2 38.4 Average 4.0 12.4 24.0 41.3 57.3 67.3 69.5 64.6 52.6 31.9 13.8 5.7 37.0