BOISE "TOP 20" HEAVIEST 24-HOUR SNOWFALLS 1. 17.0 12/16,17/1884* 11. 7.2 w 4/6/1969 2. 15.5 c- 2/1,2/1916 12. 6.7 12/24/1983 3. 13.0 w- 2/14,15/1949 13. 6.6 12/6,7/1953 4. 10.9 w+ 1/7/1912 14. 6.5 c+ 11/25,26/1964 5. 9.8 12/20/1996 15. 6.4 3/10,11/1952; w- 2/15,16/1933 6. 9.5 c- 1/24,25/1927 16. 6.2 w+ 1/8,9/1993; c+ 3/19/1917 7. 9.2 w- 12/21,22/1913 17. 6.1 12/25/1998 8. 8.5 c+ 1/17,18/1950 18. 6.0 11/28,29/1985; 4/19/1967 9. 8.4 1/20/2002 19. 5.8 12/16,17/1945 10. 8.0 w+ 11/1896 20. 5.7 12/7,8/1985; w- 4/1/1906 *Greatest snowfall in one storm: 23.6" 12/15-17/1884 NOTE: The record prior to 1899 is incomplete. BOISE "TOP 10" SNOWIEST MONTHS AND GREATEST SEASONAL TOTALS SNOWIEST OCTOBERS (1884-present) SNOWIEST NOVEMBERS (1884-present) 1. c+ 1971 2.7 1. 1985 18.6 2. w 1919 2.6 2. w+ 1896 13.5 3. c 1935 2.1 3. w+ 1994, c+ 1973 8.8 4. 2008 1.7 4. c 2010 7.8 5. w 1969 1.2 5. c 1935 7.4 6. w+ 1991 1.1 6. c+ 1964, c- 1931 7.3 7. w- 1918 0.8 7. c+ 1955 6.9 8. w 1946 0.6 8. 1979 6.6 9. c+ 1970, w+ 1905 0.3 9. c 1947 6.2 10. c 1909 0.2 10. 1986 5.9 SNOWIEST DECEMBERS (1884-present) SNOWIEST JANUARYS (1884-present) 1. 1884 36.6 1. c+ 1929 27.0 2. 1983 26.2 2. c+ 1930 26.8 3. 2008 20.2 3. c- 1937 25.5 4. c+ 1924 19.4 4. w 1964 21.4 5. w- 1913 19.2 5. c+ 1950 19.7 6. 1990 15.7 6. 1965 18.4 7. w+ 1951 15.6 7. 1910 17.6 8. c- 1971 14.8 8. w- 1909 15.9 9. c- 1926 13.9 9. w+ 1912 15.6 10. w- 1948 13.8 10. w- 1933 15.1 SNOWIEST FEBRUARYS (1884-present) SNOWIEST MARCHS (1884-present) 1. w- 1949 25.2 1. c+ 1917 18.9 2. c- 1916 23.7 2. w 1951 11.9 3. 1891 22.0 3. w+ 1897 11.4 4. w- 1933 18.2 4. c+ 1904 10.2 5. c+ 1910 15.7 5. 1952 9.2 6. c+ 1939 13.9 6. w- 1906 9.1 7. 1936, c 1899 13.2 7. 1948 6.9 8. 1948,1890 12.0 8. c 1938, c+ 1902 6.6 9. w+ 1993 10.4 9. 1894 6.0 10. c- 1935 9.9 10. c+ 1974,1930 5.7 SNOWIEST APRILS (1884-present) SNOWIEST MAYS (1884-present) 1. 1967 8.0 1. c 1964 4.0 2. w 1969 7.2 2. c+ 1975 0.9 3. w- 1906 5.7 3. w+ 1983 0.8 4. c 1901 4.6 4. c+ 1902 0.6 5. c- 1955 4.4 5. 1970 0.5 6. 1922 4.0 6. c 1938 0.4 7. c+ 1917 3.0 7. c- 1933,1922 0.1 8. c+ 1921, c- 1899 2.7 8. 9. c+ 1975 2.6 9. 10. w+ 1926 2.2 10. NOTE: June, July, August, and September have never recorded measurable snowfall. BOISE "TOP 10" SNOWIEST WINTERS (D,J,F...1884-present) 1. 1916-17 50.0 c+ 2. 1884-85 48.9 3. 1948-49 48.7 w- 4. 1929-30 45.4 c+ 5. 1915-16 43.8 c- 6. 1909-10 42.0 c+ 7. 1951-52 41.7 w+ 8. 1968-69 41.1 w+ 9. 1932-33 41.0 w- 10. 1985-86 39.5 NORMAL 18.4 inches c = la nina w = el nino weak c- or w- moderate c or w strong c+ or w+ no nino [blank] 12/11/2011 boise top 20 all time and top 10 monthly snowfalls.txt