Average Winter Temperatures (Dec,Jan,Feb) Boise, Idaho (airport) for the 72-season period 1940-41 through 2011-12 normal (1981-10) = 32.8 degrees Rank Rank Among Among Data Season D J F Coldest Warmest 22.1 1948-49 1 72 22.6 1984-85 c-,c-,c- 2 71 24.9 1983-84 c-,c-,c- 3 70 25.0 1988-89 c+,c+,c+ 4 69 25.8 1978-79 5 68 26.8 1963-64 w 6 67 27.1 1954-55 c,c,c 7 66 27.4 1976-77 w- 8 tie 27.4 1992-93 w-,w-,w- tie 64 27.5 1977-78 w-,w-,w- 10 63 27.7 1985-86 11 62 28.0 1990-91 w-,w-,w- 12 61 28.1 1961-62 13 60 28.2 1951-52 w- 14 59 28.5 1959-60 15 58 28.9 1956-57 c- 16 57 29.1 1941-42 17 56 30.0 1981-82 18 55 30.6 1943-44 19 tie 30.6 1949-50 tie 53 30.7 2000-01 21 52 31.1 1986-87 w,w,w 22 51 31.2 1945-46 23 50 31.3 1972-73 w+,w,w 24 49 31.9 1965-66 w+,w,w 25 48 32.1 1947-48 26 tie 32.1 1955-56 c+,c,c tie tie 32.1 2001-02 tie 45 32.3 1987-88 w,w-,w- 29 44 32.5 1942-43 30 tie 32.5 1946-47 tie tie 32.5 1971-72 c- tie tie 32.5 2007-08 c+ tie 40 32.7 1975-76 c+,c,c 34 39 32.8 1967-68 35 tie 32.8 1974-75 c-,c-,c- tie 37 32.9 1944-45 37 tie 32.9 1989-90 tie 35 33.2 2008-09 ,c-,c 39 34 33.3 2006-07 w-,w-,w- 40 33 33.5 2003-04 41 tie 33.5 2005-06 c-,c-,c- tie 31 33.6 1993-94 w- 43 30 33.7 1995-96 c-,c-,c- 44 29 34.0 1962-63 45 28 34.1 1950-51 c,c,c 46 tie 34.1 2010-11 c+,c+,c+ tie 26 34.3 1998-99 c+,c+ 48 25 34.6 1980-81 49 24 34.8 2009-10 w,w,w 50 tie 34.8 2011-12 c-,c-,c- tie 22 34.9 1960-61 52 21 35.0 1970-71 c,c,c 53 tie 35.0 2004-05 w-,w-,w- tie 19 35.1 1996-97 55 18 35.2 1968-69 w-,w,w 56 17 35.3 1966-67 57 tie 35.3 1979-80 tie 15 35.4 1964-65 c,c-,c- 59 14 35.5 1953-54 60 tie 35.5 1973-74 c+,c+,c+ tie 12 35.6 1991-92 w,w+,w+ 62 11 35.9 1999-00 c,c,c 63 10 36.0 1940-41 64 tie 36.0 1957-58 w,w+,w+ tie tie 36.0 1994-95 w,w,w tie 7 36.3 1982-83 w+,w+,w+ 67 6 36.5 1958-59 w-,w-,w- 68 5 36.8 1997-98 w+,w+,w+ 69 4 37.2 1952-53 70 3 37.3 1969-70 w-,w-,w- 71 2 37.6 2002-03 w,w,w 72 1 3/1/2012 c = la nina w = el nina weak c- or w- moderate c or w strong c+ or w+ average winter temperatures at boise, airport.txt