Average Temperatures for June at Boise, Idaho (airport) for the 72-year period 1940 through 2011 normal (1981-10) = 67.5 F degrees RANK RANK AMONG AMONG DATA YEAR COLDEST WARMEST 59.4 1953 w+ 1 72 60.8 1942 w- 2 tie 60.8 1944 tie 70 61.1 1945 c- 4 69 61.3 1954 c- 5 68 61.6 1943 c+ 6 67 61.7 1984 7 66 61.8 1947 w- 8 65 61.9 1993 w+ 9 64 62.3 1951 w 10 63 62.5 1964 c 11 62 62.6 1976 12 tie 62.6 1980 w+ tie tie 62.6 1991 w+ tie 59 62.9 1941 w+ 15 58 63.2 1981 w- 16 57 63.4 1998 w 17 56 63.6 1950 c+ 18 55 63.8 1983 w+ 19 tie 63.8 1995 w+ tie 53 63.9 1963 c 21 52 64.2 1952 22 tie 64.2 2011 tie 50 64.4 1975 c+ 24 tie 64.4 2005 tie 48 64.5 1956 c+ 26 tie 64.5 1978 w- tie 46 64.7 1965 w 28 45 64.9 1971 c+ 29 44 65.0 1966 w+ 30 43 65.4 1946 w 31 42 65.5 1962 c- 32 41 65.6 1949 33 40 65.8 1982 w- 34 39 66.0 1957 w 35 tie 66.0 1958 w- tie tie 66.0 1997 w tie 36 66.1 1967 38 35 66.3 1969 w 39 tie 66.3 1999 c+ tie tie 66.3 2010 tie 32 66.5 1948 42 31 66.7 1955 c- 43 30 66.7 1979 44 tie 66.7 1996 tie 28 66.9 1990 46 27 67.1 2008 47 26 67.2 1985 c 48 25 67.3 2001 49 24 67.6 1972 w+ 50 tie 67.6 1973 tie 22 67.8 2009 w- 52 21 67.9 1968 c- 53 tie 67.9 1994 w+ tie 19 68.5 1989 c+ 55 18 68.6 1959 c 56 tie 68.6 2000 c+ tie 16 68.9 1960 c 58 tie 68.9 1970 tie 14 69.3 2004 60 13 69.6 1940 w+ 61 tie 69.6 2002 w- tie 11 69.7 2003 63 10 69.8 1992 w+ 64 9 70.2 1977 w+ 65 tie 70.2 1987 w+ tie 7 70.6 2007 67 6 70.7 1988 68 5 71.0 2006 69 4 71.7 1974 c+ 70 3 72.0 1986 71 2 72.9 1961 72 1 8/8/2011 c = la nina w = el nino weak c- or w- moderate c or w strong c+ or w+ average june temperatures at boise, airport.txt