YELLOWSTONE PK MAMMOTH,

Monthly Total Snowfall (Inches)

(489905)

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
1893-94 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 18.60 y 11.30 22.70 u 0.00 z 0.00 z 0.00 z 11.30
1894-95 0.00 z 0.00 z 0.00 z 4.10 1.50 13.10 x 47.60 3.40 23.70 z 0.00 z 0.20 z 5.20 z 56.60
1895-96 0.00 z 0.00 z 2.20 4.30 z 13.00 13.20 z 21.90 u 21.20 u 20.90 a 11.40 9.90 x 0.00 z 47.50
1896-97 0.00 z 0.00 z 0.00 z 0.00 35.40 q 4.90 x 0.00 z 8.50 r 10.80 7.80 0.50 z 0.00 18.60
1897-98 0.00 z 0.00 z 0.00 z 5.50 z 20.50 8.00 3.10 12.10 v 14.00 6.50 1.00 0.00 z 53.10
1898-99 0.00 z 0.00 z 0.00 z 9.00 14.50 6.70 46.60 m 34.00 25.00 14.50 6.00 z 0.20 103.90
1899-00 0.00 z 0.00 z 0.00 z 12.80 0.40 19.20 v 9.50 x 16.60 o 25.30 7.50 0.00 x 0.00 z 46.00
1900-01 0.00 z 0.00 z 0.00 z 12.00 11.70 11.80 22.80 7.20 14.60 7.80 0.00 4.00 91.90
1901-02 0.00 z 0.00 z 6.00 1.00 8.00 18.50 l 9.60 6.10 24.60 14.40 2.40 0.00 z 72.10
1902-03 0.00 0.00 z 6.00 0.00 16.50 8.50 6.00 2.50 7.00 8.00 2.50 0.00 z 57.00
1903-04 0.00 z 0.00 z 5.00 0.00 11.00 9.40 w 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 16.00
1904-05 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
1905-06 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
1906-07 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
1907-08 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
1908-09 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
1909-10 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
1910-11 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
1911-12 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
1912-13 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
1913-14 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
1914-15 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
1915-16 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
1916-17 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
1917-18 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
1918-19 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
1919-20 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
1920-21 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
1921-22 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
1922-23 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
1923-24 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
1924-25 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
1925-26 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
1926-27 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
1927-28 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
1928-29 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
1929-30 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
1930-31 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
1931-32 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
1932-33 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
1933-34 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
1934-35 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
1935-36 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
1936-37 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
1937-38 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
1938-39 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
1939-40 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
1940-41 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 0.00
1941-42 0.00 0.00 z 0.00 8.50 5.50 3.00 t 8.80 6.70 1.70 2.30 7.60 u 0.00 33.50
1942-43 0.00 0.00 0.00 0.00 23.00 12.80 0.00 z 17.00 24.00 5.00 13.70 1.00 96.50
1943-44 0.00 0.00 0.00 5.00 8.30 7.80 5.50 21.50 24.00 0.00 0.00 0.00 72.10
1944-45 0.00 0.00 3.50 0.00 13.30 6.00 7.50 4.70 8.00 6.10 4.00 1.00 54.10
1945-46 0.00 0.00 1.50 0.00 22.00 14.70 26.00 14.30 20.00 0.00 z 0.10 0.00 98.60
1946-47 0.00 0.00 0.00 17.80 19.00 18.00 9.80 10.80 12.60 4.50 1.00 0.00 z 93.50
1947-48 0.00 0.00 2.00 0.00 22.40 19.20 18.60 14.90 14.40 2.50 0.50 0.00 94.50
1948-49 0.00 0.00 0.00 z 0.00 z 12.20 n 24.30 i 16.30 11.00 a 11.60 5.50 0.00 0.00 a 44.40
1949-50 0.00 0.00 a 0.00 13.60 0.50 18.50 23.50 b 6.90 17.20 7.50 0.00 1.00 88.70
1950-51 0.00 0.00 5.50 0.00 11.20 10.80 16.70 7.50 26.00 2.00 e 0.00 0.50 80.20
1951-52 0.00 0.00 a 4.00 11.00 d 1.50 k 31.30 21.50 16.00 31.50 0.20 0.00 0.00 115.50
1952-53 0.00 0.00 0.00 0.00 9.00 14.50 10.50 17.50 12.50 11.50 0.50 0.00 76.00
1953-54 0.00 z 0.00 0.00 1.00 3.50 20.00 40.20 11.20 17.60 7.00 0.00 b 0.00 100.50
1954-55 0.00 a 0.00 4.00 7.00 b 1.20 18.50 13.60 17.90 23.10 2.80 0.00 0.00 88.10
1955-56 0.00 0.00 0.00 5.00 19.50 23.00 22.90 11.80 15.50 11.00 0.00 m 0.00 108.70
1956-57 0.00 0.00 0.00 6.00 14.50 24.60 24.70 17.90 11.30 3.00 0.00 0.00 102.00
1957-58 0.00 0.00 0.00 a 0.00 3.30 h 9.70 b 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 9.70
1958-59 0.00 0.00 0.50 0.00 b 0.00 z 12.00 5.00 o 13.20 m 7.40 h 0.00 p 0.00 h 0.00 12.50
1959-60 0.00 0.00 0.00 0.00 i 0.00 h 0.00 e 2.00 e 0.00 z 0.00 z 4.50 z 0.00 d 0.00 2.00
1960-61 0.00 0.00 0.00 0.50 8.30 4.10 1.50 18.50 6.00 0.50 h 0.00 0.00 38.90
1961-62 0.00 0.00 0.00 c 11.00 13.00 14.50 30.00 18.50 14.00 4.00 0.00 0.00 105.00
1962-63 0.00 0.00 0.10 0.00 5.80 a 6.00 0.00 z 0.00 8.00 7.00 0.00 0.00 26.90
1963-64 0.00 0.00 0.00 1.00 4.10 14.50 23.00 8.50 14.50 9.00 0.00 0.00 74.60
1964-65 0.00 2.00 0.00 0.00 b 12.00 26.50 0.00 z 0.00 z 17.00 a 0.00 z 0.00 z 0.00 57.50
1965-66 0.00 0.00 0.00 z 0.00 z 0.00 z 15.00 1.50 f 3.50 0.00 a 4.00 5.00 0.00 27.50
1966-67 0.00 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 0.00 z 0.00 0.00
1967-68 0.00 0.00 0.00 0.00 z 9.60 25.20 37.80 2.50 6.90 7.00 0.00 0.00 89.00
1968-69 0.00 0.00 0.00 0.00 z 10.00 10.70 21.00 19.00 0.50 0.30 0.00 0.00 61.50
1969-70 0.00 0.00 0.00 0.20 3.50 10.50 9.50 4.00 22.50 9.50 0.00 0.00 59.70
1970-71 0.00 0.00 6.20 0.00 7.00 20.60 16.40 a 20.60 6.50 1.20 0.00 z 0.00 78.50
1971-72 0.00 0.00 0.00 7.10 14.20 23.10 32.70 5.70 13.60 2.80 1.00 0.00 100.20
1972-73 0.00 0.00 0.00 7.50 5.50 14.50 8.50 8.00 6.00 3.00 0.00 1.00 54.00
1973-74 0.00 0.00 0.00 3.50 0.00 z 7.00 11.50 3.80 16.60 4.80 6.00 0.00 53.20
1974-75 0.00 0.00 0.00 0.00 1.70 12.40 21.10 12.20 19.10 18.40 3.00 0.00 87.90
1975-76 0.00 0.00 0.00 12.00 19.00 22.50 5.00 9.00 18.00 3.00 0.00 0.00 88.50
1976-77 0.00 0.00 0.00 4.00 10.40 7.20 13.50 2.50 9.60 1.80 0.00 z 0.00 z 49.00
1977-78 0.00 z 0.00 z 0.00 z 0.50 0.00 z 8.00 c 0.00 z 0.00 z 0.00 z 0.30 0.00 0.00 8.80
1978-79 0.00 0.00 0.00 1.00 0.00 t 0.00 z 10.00 d 10.00 23.00 0.00 0.00 0.00 a 44.00
1979-80 0.00 0.00 0.00 0.50 13.00 9.00 13.50 21.10 15.30 4.60 0.00 z 0.00 77.00
1980-81 0.00 0.00 0.00 1.50 2.50 5.60 1.90 5.80 2.50 1.90 6.00 c 0.00 27.70
1981-82 0.00 z 0.00 z 0.00 z 2.50 1.30 10.00 19.00 2.50 b 23.00 8.00 3.00 0.00 69.30
1982-83 0.00 0.00 0.00 0.00 z 18.70 10.50 5.00 8.80 5.80 2.00 c 0.60 0.00 51.40
1983-84 0.00 0.00 z 0.00 b 0.00 z 14.50 10.50 c 3.30 7.80 6.00 11.50 4.00 0.00 57.60
1984-85 0.00 0.00 0.00 z 0.00 z 7.60 0.00 z 7.00 14.00 17.20 4.50 0.00 0.00 50.30
1985-86 0.00 0.00 z 0.00 3.20 27.10 4.00 10.50 11.10 b 2.60 8.80 0.00 b 0.00 67.30
1986-87 0.00 0.00 2.00 0.00 13.00 0.50 4.10 4.10 7.80 0.80 a 0.00 a 0.00 32.30
1987-88 0.00 0.00 0.00 0.00 2.60 7.10 7.30 10.10 7.40 8.30 11.00 0.00 53.80
1988-89 0.00 0.00 0.00 0.00 14.80 6.70 20.80 10.70 19.00 4.60 3.50 0.00 80.10
1989-90 0.00 0.00 0.00 4.40 6.30 13.00 11.00 8.50 5.00 0.40 7.30 0.00 55.90
1990-91 0.00 0.00 0.00 7.50 6.60 9.30 8.00 3.00 12.50 20.00 10.00 a 0.00 76.90
1991-92 0.00 0.00 0.00 25.00 10.50 8.80 2.00 3.50 3.00 8.00 b 0.00 0.00 60.80
1992-93 0.00 0.00 0.00 1.50 5.60 15.80 19.50 11.50 3.00 13.50 0.00 0.00 70.40
1993-94 0.00 0.00 0.00 a 0.80 9.80 8.50 6.00 17.80 10.00 7.00 0.00 0.00 59.90
1994-95 0.00 0.00 0.00 0.00 7.60 20.30 b 6.10 10.00 16.80 12.00 0.50 0.00 73.30
1995-96 0.00 0.00 0.00 2.00 10.00 3.20 a 22.30 5.20 a 39.50 6.00 0.20 a 0.00 88.40
1996-97 0.00 0.00 1.00 10.50 9.00 21.80 12.50 b 5.50 11.70 4.40 2.00 0.00 78.40
1997-98 0.00 0.00 0.00 1.00 b 8.50 5.50 27.90 6.20 a 3.10 5.00 0.00 2.00 59.20
1998-99 0.00 0.00 0.00 0.30 16.40 9.00 15.60 18.20 5.60 12.80 6.00 0.00 83.90
1999-00 0.00 0.00 0.00 0.00 a 1.20 17.30 14.20 6.00 21.00 1.50 0.00 a 0.00 61.20
2000-01 0.00 0.00 4.50 0.00 a 7.10 17.10 3.10 4.70 7.00 15.00 0.00 a 5.50 64.00
2001-02 0.00 0.00 0.00 0.40 7.50 14.80 a 12.00 8.00 12.50 3.60 2.80 0.00 61.60
2002-03 0.00 0.00 0.00 6.00 a 13.80 2.30 b 7.90 a 14.80 20.10 4.20 2.00 0.00 71.10
2003-04 0.00 0.00 0.00 2.50 0.00 z 14.20 a 12.00 4.90 a 6.30 2.00 0.60 0.00 42.50
2004-05 0.00 0.00 0.00 4.50 1.70 7.60 27.70 5.60 8.10 6.90 a 1.00 0.00 63.10
2005-06 0.00 0.00 0.00 0.30 22.20 c 14.00 11.90 0.00 z 7.20 2.80 0.00 0.00 58.40
2006-07 0.00 0.00 0.00 3.90 8.40 6.90 b 12.00 16.50 0.00 8.20 0.00 a 0.00 i 55.90
2007-08 0.00 0.00 0.00 7.10 5.40 17.60 b 14.90 9.50 a 16.20 a 7.20 2.00 0.00 79.90
2008-09 0.00 0.00 0.00 9.30 6.20 a 19.90 8.50 a 6.70 10.20 22.90 0.10 0.00 83.80
2009-10 0.00 0.00 0.00 5.70 c 4.10 2.50 b 7.90 a 0.90 3.10 a 8.30 1.90 0.00 a 34.40
2010-11 0.00 0.00 0.00 0.00 45.50 20.80 b 8.40 a 11.20 7.30 10.90 a 1.60 0.00 105.70
2011-12 0.00 0.00 0.00 0.00 16.10 a 5.10 a 8.40 12.20 7.00 a 13.80 9.80 0.00 72.40
2012-13 0.00 0.00 0.00 3.40 10.60 a 16.00 b 12.10 8.70 9.10 a 0.00 z 0.00 z 0.00 z 59.90
Period of Record Statistics
MEAN 0.00 0.03 0.77 3.75 10.70 12.59 14.25 10.05 12.89 6.62 1.74 0.23 72.41
S.D. 0.00 0.24 1.72 4.99 7.56 6.77 9.64 6.21 8.03 4.91 3.00 0.85 18.82
SKEW 0.00 8.00 2.14 1.78 1.57 0.42 1.17 1.00 0.63 1.00 2.19 4.85 -0.36
MAX 0.00 2.00 6.20 25.00 45.50 31.30 47.60 34.00 39.50 22.90 13.70 5.50 105.70
MIN 0.00 0.00 0.00 0.00 0.40 0.00 1.50 0.00 0.00 0.00 0.00 0.00 27.70
NO YRS 70 67 70 71 70 71 69 71 75 72 67 72 39