Average Temperatures for October at Boise, Idaho (airport) for the 72-year period 1940 through 2011 normal (1981-10) = 52.8 F degrees RANK RANK AMONG AMONG DATA YEAR COLDEST WARMEST 45.2 1946 w 1 72 45.9 1969 w 2 71 46.4 1949 3 70 46.9 1984 4 69 47.5 1970 c+ 5 68 48.4 1985 6 67 48.5 2009 W 7 66 48.7 1981 8 65 49.0 1971 c+ 9 64 49.1 1961 c- 10 63 49.2 1951 w+ 11 tie 49.2 1995 tie 61 49.4 1966 13 tie 49.4 2002 w- tie 59 49.5 1957 w 15 58 49.6 1959 c 16 57 50.1 1956 c+ 17 56 50.3 1994 w+ 18 55 50.7 1967 19 54 50.8 1976 20 53 50.9 1941 w+ 21 tie 50.9 1954 c- tie tie 50.9 1982 w+ tie 50 51.0 1990 w- 24 49 51.2 1989 c- 25 tie 51.2 2006 w- tie 47 51.6 1980 w- 27 46 51.7 1972 w+ 28 tie 51.7 1998 tie 44 51.8 1991 w+ 30 43 52.0 1997 w+ 31 tie 52.0 2007 c+ tie 41 52.2 1974 c+ 33 40 52.3 1948 34 tie 52.3 1975 c+ tie tie 52.3 2000 c tie 37 52.4 1968 37 tie 52.4 1973 c+ tie tie 52.4 1996 tie 34 52.6 1942 c 40 tie 52.6 1986 w- tie 32 52.7 1960 c- 42 31 52.8 1978 43 30 52.9 1953 w 44 tie 52.9 1964 c+ tie 28 53.1 1962 c+ 46 27 53.2 1977 w+ 47 tie 53.2 1993 w tie 25 53.3 1955 c+ 49 24 53.5 2001 50 tie 53.5 2004 w- tie tie 53.5 2008 tie 21 53.7 2005 53 20 53.8 1983 c- 54 19 53.9 1943 c 55 18 54.3 1999 c 56 17 54.4 1940 w+ 57 tie 54.4 1979 tie tie 54.4 1992 w tie 14 54.6 2011 c 60 13 54.9 1987 w 61 12 55.2 1945 c- 62 tie 55.2 1947 c tie 10 55.3 1958 64 9 56.4 1965 w+ 65 8 56.9 1950 c+ 66 tie 56.9 1952 tie 6 57.0 2010 c+ 68 5 57.8 1963 w+ 69 4 58.0 1944 w- 70 tie 58.0 2003 tie 2 59.9 1988 c+ 72 1 11/1/2011 c = la nina w = el nino weak c- or w- moderate c or w strong c+ or w+ average october temperatures at boise, airport.txt