BOULDER st,

Monthly Total Snowfall (Inches)

(050848)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN ANN
1892-93 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1893-94 0.00 z 0.00 z 0.00 z 0.00 z 9.00 5.00 z 2.00 10.40 x 1.40 0.00 z 0.00 z 0.00 z 12.40
1894-95 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 12.30 6.30 z 7.60 17.30 0.00 0.00 z 0.00 z 37.20
1895-96 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1896-97 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1897-98 0.00 z 0.00 z 0.00 z 8.80 z 5.50 9.10 y 7.00 4.30 x 7.60 v 8.30 18.00 z 0.00 z 20.80
1898-99 0.00 z 0.00 z 1.00 5.00 23.50 18.00 13.10 y 15.30 13.00 x 8.00 0.00 0.00 70.80
1899-00 0.00 0.00 z 0.00 z 2.00 0.00 12.80 4.60 z 14.80 6.90 y 20.00 0.00 0.00 z 49.60
1900-01 0.00 z 0.00 z 0.00 z 0.00 3.00 z 9.30 7.50 5.30 t 18.60 v 26.00 0.00 z 0.00 z 42.80
1901-02 0.00 z 0.00 z 0.00 z 4.00 0.00 15.00 7.30 6.50 9.50 3.00 0.00 z 0.00 45.30
1902-03 0.00 z 0.00 z 0.00 z 0.50 8.00 17.00 2.00 18.20 t 13.50 18.00 4.00 0.00 z 63.00
1903-04 0.00 z 0.00 z 1.00 10.50 2.40 z 2.50 2.00 3.00 16.00 1.00 0.00 z 0.00 36.00
1904-05 0.00 0.00 0.00 z 5.00 z 1.10 z 8.50 13.50 8.20 t 7.50 21.50 3.00 0.00 z 54.00
1905-06 0.00 z 0.00 z 0.00 z 13.00 0.00 0.00 3.30 z 2.50 z 24.00 8.00 0.00 z 0.00 z 45.00
1906-07 0.00 z 0.00 0.00 19.00 18.00 0.00 6.20 7.10 x 2.50 28.50 15.00 0.00 89.20
1907-08 0.00 0.00 1.00 0.00 6.00 z 2.00 z 10.00 1.50 3.80 5.50 8.00 0.00 29.80
1908-09 0.00 0.00 8.00 15.30 31.00 15.00 0.60 z 19.30 26.50 27.50 0.00 0.00 142.60
1909-10 0.00 0.00 0.00 1.00 16.50 31.00 4.00 20.80 0.00 0.20 7.00 0.00 80.50
1910-11 0.00 z 0.00 z 0.00 0.00 0.50 4.50 11.50 27.10 0.00 12.00 0.00 z 0.00 z 55.60
1911-12 0.00 z 0.00 0.00 8.00 10.00 0.00 z 0.00 z 0.00 z 22.00 x 0.00 7.00 0.00 z 25.00
1912-13 0.00 0.00 0.00 3.00 0.00 z 2.40 6.30 z 9.80 x 21.10 15.40 0.00 z 0.00 z 41.90
1913-14 0.00 z 0.00 z 0.00 9.00 0.00 53.00 x 0.00 1.80 z 25.40 x 14.80 0.00 0.00 23.80
1914-15 0.00 0.00 0.00 3.00 0.10 5.30 8.70 y 18.50 13.50 y 0.00 14.50 0.00 41.40
1915-16 0.00 0.00 0.00 0.00 3.90 19.50 y 11.20 3.80 z 12.80 14.00 5.00 0.00 z 46.90
1916-17 0.00 z 0.00 0.00 10.10 17.50 x 13.60 5.90 6.30 22.30 w 13.00 14.80 0.00 63.70
1917-18 0.00 z 0.00 z 0.00 z 7.50 0.00 z 5.30 5.00 z 14.50 0.00 z 0.00 0.00 z 0.00 z 27.30
1918-19 0.00 0.00 z 0.00 z 2.00 14.00 18.00 w 0.00 7.00 v 10.00 4.50 0.00 z 0.00 z 30.50
1919-20 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.50 12.50 14.40 6.10 40.30 0.00 0.00 73.80
1920-21 0.00 0.00 0.00 z 6.00 z 13.30 z 14.70 y 4.40 z 4.00 w 8.80 z 13.60 z 0.00 z 0.00 z 0.00
1921-22 0.00 z 0.00 z 0.00 z 0.00 z 6.30 z 14.90 z 5.90 y 7.60 w 3.60 z 4.70 z 0.00 z 0.00 0.00
1922-23 0.00 0.00 0.00 1.10 14.00 3.80 z 0.00 24.40 24.80 x 2.50 0.20 0.00 z 42.20
1923-24 0.00 z 0.00 z 0.00 12.30 z 2.90 7.40 7.90 2.80 22.50 16.50 0.00 0.00 60.00
1924-25 0.00 0.00 0.00 0.00 1.00 14.20 2.00 0.00 z 4.00 0.00 0.00 0.00 21.20
1925-26 0.00 0.00 0.00 17.00 8.00 15.00 8.50 5.80 22.00 3.00 0.00 0.00 79.30
1926-27 0.00 0.00 z 0.00 3.00 0.00 z 20.80 3.90 3.90 0.00 z 0.00 z 0.00 z 0.00 z 31.60
1927-28 0.00 z 0.00 0.00 z 0.00 8.60 8.20 0.80 16.10 t 16.70 2.40 0.00 0.00 36.70
1928-29 0.00 0.00 z 0.00 0.00 19.70 0.50 4.70 12.10 26.20 2.00 0.00 z 0.00 z 65.20
1929-30 0.00 0.00 0.00 14.90 25.90 9.10 8.90 7.30 7.40 v 0.00 5.50 0.00 71.60
1930-31 0.00 0.00 0.00 0.00 13.30 9.80 0.00 16.90 20.60 10.60 26.70 0.00 97.90
1931-32 0.00 0.00 0.00 0.00 13.40 0.40 4.70 14.10 14.40 5.30 0.00 0.00 52.30
1932-33 0.00 0.00 0.00 6.30 5.10 8.40 0.00 5.60 9.10 37.70 3.00 0.00 75.20
1933-34 0.00 0.00 0.00 0.00 1.00 z 8.00 1.00 19.80 t 15.50 13.30 0.00 0.00 37.80
1934-35 0.00 0.00 3.00 0.00 8.40 3.00 1.70 7.70 y 1.60 16.10 1.00 0.00 34.80
1935-36 0.00 0.00 3.00 2.30 7.70 0.00 5.90 7.70 24.20 9.90 z 0.00 0.00 50.80
1936-37 0.00 0.00 8.00 6.00 0.00 z 5.60 7.90 5.80 8.30 19.80 0.00 0.00 61.40
1937-38 0.00 0.00 0.00 2.50 7.70 15.70 8.70 x 11.30 21.70 w 9.00 0.00 0.00 46.20
1938-39 0.00 0.00 0.00 2.70 24.90 15.30 8.00 13.30 9.40 14.10 0.00 0.00 87.70
1939-40 0.00 0.00 0.00 6.50 0.00 4.30 24.20 w 15.90 14.60 8.00 0.00 0.00 49.30
1940-41 0.00 0.00 0.00 0.00 7.00 6.50 11.50 3.30 29.20 15.00 0.00 0.00 72.50
1941-42 0.00 0.00 0.00 3.00 6.10 12.70 13.30 20.90 11.70 10.00 1.50 0.00 79.20
1942-43 0.00 0.00 1.00 23.00 5.20 7.80 v 2.00 3.50 17.90 0.00 9.50 0.00 62.10
1943-44 0.00 0.00 0.00 0.00 9.50 6.60 13.00 5.40 41.10 27.60 2.10 0.00 105.30
1944-45 0.00 0.00 0.00 0.00 4.50 9.60 20.30 9.00 10.90 32.50 0.50 0.00 87.30
1945-46 0.00 0.00 2.00 5.10 6.50 4.00 21.20 5.50 1.00 0.00 7.50 0.00 52.80
1946-47 0.00 0.00 1.00 7.30 46.70 7.00 17.00 19.30 23.70 9.00 5.00 z 1.00 132.00
1947-48 0.00 z 0.00 0.00 8.00 16.70 v 13.40 35.00 9.40 u 27.50 2.00 0.00 0.00 85.90
1948-49 0.00 0.00 0.00 z 0.00 z 0.00 z 6.80 v 28.20 2.30 18.60 9.10 0.00 0.00 58.20
1949-50 0.00 0.00 0.00 7.90 0.00 4.40 11.80 3.70 4.20 9.00 13.70 0.00 54.70
1950-51 0.00 0.00 0.00 0.00 20.40 3.20 13.30 9.20 30.70 17.90 0.00 2.20 96.90
1951-52 0.00 0.00 1.50 3.90 17.80 18.00 1.00 5.00 a 26.80 9.30 0.00 0.00 83.30
1952-53 0.00 0.00 0.00 2.50 26.70 3.50 5.30 11.80 11.80 24.40 3.00 0.00 89.00
1953-54 0.00 0.00 0.00 0.00 10.30 15.70 6.70 3.40 14.20 6.80 6.50 0.00 63.60
1954-55 0.00 0.00 0.00 4.20 c 4.00 7.50 6.50 21.30 26.00 2.50 0.00 b 0.00 72.00
1955-56 0.00 0.00 0.00 2.00 14.70 9.20 5.10 25.30 18.80 9.60 0.00 0.00 84.70
1956-57 0.00 0.00 0.00 2.00 20.50 8.50 15.20 4.00 5.00 44.00 4.00 0.00 103.20
1957-58 0.00 0.00 0.00 1.60 4.60 1.00 11.90 6.40 28.80 16.10 0.00 0.00 70.40
1958-59 0.00 0.00 0.20 3.50 12.30 12.20 16.50 15.90 19.90 32.00 0.00 0.00 112.50
1959-60 0.00 0.00 10.90 14.50 13.60 0.50 10.40 21.40 10.50 7.70 1.50 0.00 91.00
1960-61 0.00 0.00 0.00 4.50 5.50 18.10 9.70 10.60 a 30.30 6.40 0.00 0.00 85.10
1961-62 0.00 0.00 0.00 10.70 13.70 8.60 25.10 12.50 6.60 4.30 0.00 0.00 81.50
1962-63 0.00 0.00 0.00 0.00 6.90 1.50 15.40 5.60 28.60 1.50 0.00 0.00 59.50
1963-64 0.00 0.00 0.00 0.70 4.50 11.20 7.50 12.00 22.10 16.00 0.00 0.00 74.00
1964-65 0.00 0.00 0.00 0.00 11.00 12.50 12.00 25.60 31.70 6.10 0.00 0.00 98.90
1965-66 0.00 0.00 4.20 0.00 2.50 10.20 7.30 23.90 3.80 9.00 2.60 0.00 63.50
1966-67 0.00 0.00 0.00 6.10 8.40 5.20 13.30 7.30 9.80 0.00 6.30 0.00 56.40
1967-68 0.00 0.00 0.00 3.10 13.80 31.40 0.80 19.90 13.00 15.70 0.00 0.00 97.70
1968-69 0.00 0.00 0.00 0.50 7.50 9.50 6.60 5.30 17.50 0.00 0.00 0.00 46.90
1969-70 0.00 0.00 0.00 49.30 10.80 8.20 2.00 0.00 56.70 7.50 0.00 0.00 134.50
1970-71 0.00 0.00 1.50 6.20 8.00 4.00 8.00 18.70 11.50 9.30 0.00 0.00 67.20
1971-72 0.00 0.00 21.00 10.20 3.20 11.70 13.50 6.10 9.90 0.70 0.00 0.00 76.30
1972-73 0.00 0.00 0.00 10.40 26.80 19.50 18.50 2.00 14.70 29.80 6.60 0.00 128.30
1973-74 0.00 0.00 0.00 0.00 21.10 16.60 8.00 8.40 18.30 11.40 0.00 0.00 83.80
1974-75 0.00 0.00 2.70 1.20 8.40 7.90 6.60 12.30 16.20 28.70 0.00 0.00 84.00
1975-76 0.00 0.00 0.00 5.80 11.30 10.80 8.30 6.20 16.50 0.00 0.00 0.00 58.90
1976-77 0.00 0.00 0.00 2.10 1.00 7.00 3.80 7.40 5.90 12.60 0.00 0.00 39.80
1977-78 0.00 0.00 0.00 0.00 4.60 2.50 19.60 10.50 9.90 5.90 23.00 0.00 76.00
1978-79 0.00 0.00 0.00 0.00 2.50 0.00 z 13.00 2.00 14.50 10.20 0.00 z 0.00 z 42.20
1979-80 0.00 0.00 0.00 z 1.00 39.30 23.50 14.30 13.80 18.00 5.50 0.00 0.00 115.40
1980-81 0.00 z 0.00 0.00 2.00 a 9.50 0.50 5.00 7.00 16.00 0.00 a 0.00 0.00 40.00
1981-82 0.00 0.00 0.00 3.00 2.00 7.30 1.00 4.00 a 3.50 0.00 0.00 0.00 20.80
1982-83 0.00 0.00 0.00 1.50 0.00 z 23.50 1.00 2.30 22.50 17.50 0.00 0.00 68.30
1983-84 0.00 0.00 0.00 0.00 30.10 11.00 6.40 9.10 19.20 12.70 0.00 0.00 88.50
1984-85 0.00 0.00 4.20 11.00 0.00 4.80 16.30 14.60 20.40 0.90 0.00 0.00 72.20
1985-86 0.00 0.00 11.00 a 6.00 22.80 16.00 2.00 17.80 3.00 13.50 0.00 0.00 92.10
1986-87 0.00 0.00 0.00 7.00 20.30 13.00 21.40 23.70 23.00 16.30 0.00 0.00 124.70
1987-88 0.00 0.00 0.00 0.00 13.50 27.50 6.50 16.70 24.90 4.70 1.00 0.00 94.80
1988-89 0.00 0.00 0.00 0.00 5.70 31.50 14.20 14.80 10.50 15.80 0.00 0.00 92.50
1989-90 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 7.60 0.10 0.00 7.70
1990-91 0.00 0.00 0.00 6.10 17.10 12.70 17.00 2.80 2.00 19.10 0.40 0.00 77.20
1991-92 0.00 0.00 0.00 13.60 28.90 0.20 10.90 0.00 19.70 b 0.00 0.00 0.00 73.30
1992-93 0.00 0.00 0.00 0.00 44.70 18.80 5.80 9.30 11.90 4.70 0.00 0.00 95.20
1993-94 0.00 0.00 z 1.30 b 10.50 27.00 9.00 11.50 15.40 14.90 22.80 0.00 0.00 112.40
1994-95 0.00 0.00 0.40 0.00 23.70 10.30 12.00 16.30 16.40 24.10 0.80 0.00 104.00
1995-96 0.00 0.00 8.60 3.10 17.80 3.40 29.10 5.90 17.70 7.60 0.00 0.00 93.20
1996-97 0.00 0.00 6.10 0.10 16.60 6.10 19.00 28.80 14.10 38.60 0.00 0.00 129.40
1997-98 0.00 0.00 0.00 30.10 0.00 z 0.00 z 10.40 1.70 42.90 19.40 0.00 0.00 104.50
1998-99 0.00 0.00 z 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00
1999-00 0.00 0.00 1.60 6.10 10.50 8.80 4.00 a 5.40 26.60 8.90 0.00 0.00 71.90
2000-01 0.00 0.00 6.50 0.90 10.90 8.50 a 10.30 13.10 16.60 10.50 6.50 0.00 83.80
2001-02 0.00 0.00 0.00 0.30 7.30 4.70 18.50 8.30 22.60 0.10 1.60 0.00 63.40
2002-03 0.00 0.00 0.00 16.10 13.00 0.50 0.50 22.80 34.70 6.20 5.20 0.00 99.00
2003-04 0.00 0.00 0.00 0.40 7.50 9.90 12.00 18.00 7.90 14.90 0.00 0.00 70.60
2004-05 0.00 0.00 0.00 0.00 17.60 6.70 15.90 3.30 11.20 21.80 0.20 0.00 76.70
2005-06 0.00 0.00 0.00 0.00 1.90 6.30 5.50 11.40 23.30 2.90 0.10 0.00 51.40
2006-07 0.00 0.00 0.00 15.20 12.00 45.50 27.50 15.30 4.50 2.20 0.00 0.00 122.20
2007-08 0.00 0.00 0.00 0.10 5.90 30.00 10.30 10.40 17.60 7.90 0.70 0.00 82.90
2008-09 0.00 0.00 0.00 0.20 1.30 20.90 13.00 a 3.90 21.40 20.40 0.00 z 0.00 81.10
2009-10 0.00 0.00 0.00 30.10 8.90 27.80 4.60 23.00 28.70 5.80 5.60 0.00 134.50
2010-11 0.00 0.00 0.00 0.00 2.00 9.50 18.20 13.20 0.70 3.50 0.20 0.00 47.30
2011-12 0.00 0.00 0.00 11.50 8.60 33.10 7.80 32.10 0.00 1.60 0.00 0.00 94.70
2012-13 0.00 0.00 0.00 3.00 b 0.60 b 11.70 a 3.50 f 17.50 e 17.50 d 0.00 z 0.00 z 0.00 z 50.30
Period of Record Statistics
MEAN 0.00 0.00 1.11 5.12 11.53 10.80 9.65 11.45 16.15 11.23 2.28 0.03 82.46
S.D. 0.00 0.00 3.05 7.51 9.82 8.53 7.14 7.45 10.14 10.11 4.78 0.24 22.85
SKEW 0.00 0.00 3.99 2.87 1.30 1.36 0.97 0.56 0.80 1.08 2.94 7.99 0.16
MAX 0.00 0.00 21.00 49.30 46.70 45.50 35.00 32.10 56.70 44.00 26.70 2.20 134.50
MIN 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20.80
NO YRS 97 96 100 108 98 102 102 97 101 111 99 98 65