KNOXVILLE WSO AIRPORT, TENNESSEE

Monthly Total Snowfall (Inches)

(404950)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 201205
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
1909-10 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.00 0.00 b 0.00 0.70 0.00 0.00 2.70
1910-11 0.00 0.00 0.00 0.00 0.00 1.80 0.10 0.00 0.00 0.00 0.00 0.00 1.90
1911-12 0.00 0.00 0.00 0.00 1.00 0.00 3.50 2.30 1.60 0.00 0.00 0.00 8.40
1912-13 0.00 0.00 0.00 0.00 0.50 0.80 2.40 0.00 0.00 0.00 0.00 0.00 3.70
1913-14 0.00 0.00 0.00 0.00 0.20 0.10 5.10 2.00 9.40 0.00 0.00 0.00 16.80
1914-15 0.00 0.00 0.00 0.00 0.00 8.00 1.00 0.20 6.70 0.00 0.00 0.00 15.90
1915-16 0.00 0.00 0.00 0.00 0.00 2.50 1.00 4.10 1.00 0.10 0.00 0.00 8.70
1916-17 0.00 0.00 0.00 0.00 0.00 9.30 0.80 0.20 0.20 0.70 0.00 0.00 11.20
1917-18 0.00 0.00 0.00 0.00 0.00 8.00 7.60 0.50 0.00 0.00 0.00 0.00 16.10
1918-19 0.00 0.00 0.00 0.00 0.00 0.00 5.40 1.40 0.00 0.00 0.00 0.00 6.80
1919-20 0.00 0.00 0.00 0.00 0.00 0.00 0.10 0.50 0.50 0.00 0.00 0.00 1.10
1920-21 0.00 0.00 0.00 0.00 0.00 0.00 5.30 0.80 0.00 0.00 0.00 0.00 6.10
1921-22 0.00 0.00 0.00 0.00 0.00 0.00 1.90 1.60 0.00 0.00 a 0.00 0.00 3.50
1922-23 0.00 0.00 0.00 0.00 1.80 0.00 0.00 6.70 a 0.00 0.00 0.00 0.00 8.50
1923-24 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 2.00 0.00 0.00 0.00 4.00
1924-25 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
1925-26 0.00 0.00 0.00 0.00 0.00 0.50 3.60 0.00 0.10 0.00 0.00 0.00 4.20
1926-27 0.00 0.00 0.00 0.00 0.00 0.00 0.60 0.40 9.50 0.00 0.00 0.00 10.50
1927-28 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.20 2.70 0.00 0.00 0.00 2.90
1928-29 0.00 0.00 0.00 0.00 0.00 0.00 0.10 2.90 0.00 0.00 0.00 0.00 3.00
1929-30 0.00 0.00 0.00 0.00 3.40 6.30 5.30 0.00 0.00 0.00 0.00 0.00 15.00
1930-31 0.00 0.00 0.00 0.00 0.00 7.20 7.60 0.00 0.40 0.00 0.00 0.00 15.20
1931-32 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.80 0.00 0.00 0.00 0.80
1932-33 0.00 0.00 0.00 0.00 0.00 3.50 0.00 4.80 0.00 0.00 0.00 0.00 8.30
1933-34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 7.60 1.20 0.00 0.00 0.00 8.80
1934-35 0.00 0.00 0.00 0.00 0.00 0.30 7.10 0.20 1.60 0.00 0.00 0.00 9.20
1935-36 0.00 0.00 0.00 0.00 0.00 7.00 5.50 14.40 2.60 0.00 0.00 0.00 29.50
1936-37 0.00 0.00 0.00 0.00 0.60 0.60 0.00 6.60 0.90 0.00 0.00 0.00 8.70
1937-38 0.00 0.00 0.00 0.00 0.00 1.30 2.80 0.00 0.00 0.00 0.00 0.00 4.10
1938-39 0.00 0.00 0.00 0.00 1.30 0.30 0.30 0.00 0.50 a 0.00 0.00 0.00 2.40
1939-40 0.00 0.00 0.00 0.00 0.00 0.40 13.40 0.00 6.10 0.00 0.00 0.00 19.90
1940-41 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.80 0.20 0.00 0.00 0.00 1.00
1941-42 0.00 0.00 0.00 0.00 0.00 0.00 1.90 8.50 13.50 0.00 0.00 0.00 23.90
1942-43 0.00 0.00 0.00 0.00 0.00 6.10 0.10 0.00 5.90 0.00 0.00 0.00 12.10
1943-44 0.00 0.00 0.00 0.00 0.00 0.00 1.80 0.90 0.00 0.00 0.00 0.00 2.70
1944-45 0.00 0.00 0.00 0.00 0.00 0.30 0.00 0.00 0.00 0.00 0.00 0.00 0.30
1945-46 0.00 0.00 0.00 0.00 0.00 1.30 0.00 0.00 0.00 0.00 0.00 0.00 1.30
1946-47 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.20 1.20 0.00 0.00 0.00 3.40
1947-48 0.00 0.00 g 0.00 a 0.00 0.00 0.00 7.80 2.80 0.00 0.00 0.00 0.00 10.60
1948-49 0.00 0.00 0.00 0.00 0.00 0.00 2.00 0.00 0.00 0.00 0.00 0.00 2.00
1949-50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
1950-51 0.00 0.00 0.00 0.00 5.50 2.40 0.00 1.80 1.20 0.00 0.00 0.00 10.90
1951-52 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
1952-53 0.00 0.00 0.00 0.00 18.20 0.00 2.00 8.10 0.00 0.00 0.00 0.00 28.30
1953-54 0.00 0.00 0.00 0.00 0.00 0.00 2.10 4.90 2.70 0.00 0.00 0.00 9.70
1954-55 0.00 0.00 0.00 0.00 0.00 0.00 3.40 2.80 0.00 0.00 0.00 0.00 6.20
1955-56 0.00 0.00 0.00 0.00 0.00 0.00 7.00 0.00 0.00 0.00 0.00 0.00 7.00
1956-57 0.00 0.00 0.00 0.00 0.60 0.40 0.00 0.00 3.10 0.00 0.00 0.00 4.10
1957-58 0.00 0.00 0.00 0.00 0.00 0.60 0.30 10.30 0.00 0.00 0.00 0.00 11.20
1958-59 0.00 0.00 0.00 0.00 0.00 4.30 2.50 0.00 0.30 0.00 0.00 0.00 7.10
1959-60 0.00 0.00 0.00 0.00 0.60 3.70 8.90 23.30 20.20 0.00 0.00 0.00 56.70
1960-61 0.00 0.00 0.00 0.00 0.00 2.00 5.40 3.40 0.10 0.00 0.00 0.00 10.90
1961-62 0.00 0.00 0.00 0.00 0.00 4.50 15.10 0.00 1.90 0.00 0.00 0.00 21.50
1962-63 0.00 0.00 0.00 0.00 0.00 6.90 4.20 7.20 0.00 0.00 0.00 0.00 18.30
1963-64 0.00 0.00 0.00 0.00 5.90 13.20 8.50 5.20 0.00 0.00 0.00 0.00 32.80
1964-65 0.00 0.00 0.00 0.00 0.00 0.00 6.30 6.90 4.40 0.00 0.00 0.00 17.60
1965-66 0.00 0.00 0.00 0.00 0.00 0.00 14.20 0.00 0.50 0.00 0.00 0.00 14.70
1966-67 0.00 0.00 0.00 0.00 0.00 3.10 2.20 5.70 0.00 0.00 0.00 0.00 11.00
1967-68 0.00 0.00 0.00 0.00 0.00 0.00 5.90 4.70 1.90 0.00 0.00 0.00 12.50
1968-69 0.00 0.00 0.00 0.00 0.30 0.00 0.50 7.70 5.20 0.00 0.00 0.00 13.70
1969-70 0.00 0.00 0.00 0.00 0.00 8.90 13.10 4.60 0.00 0.00 0.00 0.00 26.60
1970-71 0.00 0.00 0.00 0.00 0.00 6.30 1.30 6.40 3.60 7.00 0.00 0.00 24.60
1971-72 0.00 0.00 0.00 0.00 0.00 0.00 0.40 4.20 6.70 0.00 0.00 0.00 11.30
1972-73 0.00 0.00 0.00 0.00 0.00 0.00 9.00 0.00 1.90 0.00 0.00 0.00 10.90
1973-74 0.00 0.00 0.00 0.00 0.00 2.00 0.00 0.00 1.80 0.00 0.00 0.00 3.80
1974-75 0.00 0.00 0.00 0.00 0.00 1.60 1.30 0.00 2.50 0.00 0.00 0.00 5.40
1975-76 0.00 0.00 0.00 0.00 0.00 0.00 0.30 2.80 0.00 0.00 0.00 0.00 3.10
1976-77 0.00 0.00 0.00 0.00 1.00 2.10 7.90 0.20 0.00 0.00 0.00 0.00 11.20
1977-78 0.00 0.00 0.00 0.00 0.10 0.60 13.10 5.50 1.80 0.00 0.00 0.00 21.10
1978-79 0.00 0.00 0.00 0.00 0.00 0.00 4.70 18.40 0.00 0.00 0.00 0.00 23.10
1979-80 0.00 0.00 0.00 0.00 0.00 0.00 0.50 11.00 3.50 0.00 0.00 0.00 15.00
1980-81 0.00 0.00 0.00 0.00 0.00 0.00 5.00 2.50 0.00 0.00 0.00 0.00 7.50
1981-82 0.00 0.00 0.00 0.00 0.00 0.10 4.40 0.10 1.10 0.00 0.00 0.00 5.70
1982-83 0.00 0.00 0.00 0.00 0.00 3.00 1.10 3.40 0.70 2.00 0.00 0.00 10.20
1983-84 0.00 0.00 0.00 0.00 0.00 0.70 2.80 3.50 0.00 0.00 0.00 0.00 7.00
1984-85 0.00 0.00 0.00 0.00 0.00 0.00 14.20 8.30 0.00 0.00 0.00 0.00 22.50
1985-86 0.00 0.00 0.00 0.00 0.00 0.40 3.60 5.00 0.00 0.00 0.00 0.00 9.00
1986-87 0.00 0.00 0.00 0.00 0.00 0.00 7.50 0.00 1.60 10.70 0.00 0.00 19.80
1987-88 0.00 0.00 0.00 0.00 0.00 0.00 9.20 0.90 0.00 0.00 0.00 0.00 10.10
1988-89 0.00 0.00 0.00 0.00 0.00 2.60 1.80 2.80 0.00 0.00 0.00 0.00 7.20
1989-90 0.00 0.00 0.00 0.00 0.00 1.10 0.00 0.00 0.00 0.00 0.00 0.00 1.10
1990-91 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.20 0.70 0.00 0.00 0.00 1.90
1991-92 0.00 0.00 0.00 0.00 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.20
1992-93 0.00 0.00 0.00 0.00 0.00 0.30 0.00 1.00 15.10 0.00 0.00 0.00 16.40
1993-94 0.00 0.00 0.00 0.00 0.00 0.30 3.30 0.00 0.60 0.00 0.00 0.00 4.20
1994-95 0.00 0.00 0.00 0.00 0.00 0.00 2.00 1.10 0.60 0.00 0.00 0.00 3.70
1995-96 0.00 0.00 0.00 0.00 0.00 b 0.00 10.00 0.90 w 0.20 z 0.00 z 0.00 z 0.00 z 10.00
1996-97 0.00 z 0.00 z 0.00 z 0.00 z 0.90 z 0.00 z 1.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.50
1997-98 0.00 z 0.00 z 0.00 z 0.00 z 0.00 3.30 0.40 0.10 0.00 0.00 0.00 0.00 3.80
1998-99 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.10 a 0.00 a 0.00 0.00 0.00 1.10
1999-00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 a 0.00 0.00 0.00 0.00 0.00 0.00
2000-01 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
2001-02 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
2002-03 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
2003-04 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 0.00 0.00 0.00 0.00
2004-05 0.00 0.00 0.00 0.00 0.00 0.10 0.00 0.00 0.40 0.00 0.00 0.00 0.50
2005-06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.70 0.00 0.00 0.00 0.00 2.70
2006-07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.30 0.00 0.00 0.00 0.00 0.30
2007-08 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
2008-09 0.00 0.00 0.00 0.00 0.00 0.00 1.00 5.00 0.00 0.00 0.00 0.00 6.00
2009-10 0.00 0.00 0.00 0.00 0.00 2.00 3.10 0.00 1.00 0.00 0.00 0.00 6.10
2010-11 0.00 0.00 0.00 0.00 0.00 5.00 6.50 0.80 0.00 0.00 0.00 0.00 a 12.30
2011-12 0.00 a 0.00 0.00 z 0.00 0.00 0.10 0.00 0.00 0.00 a 0.00 0.00 u 0.00 z 0.10
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.00 0.42 1.52 3.17 2.65 1.57 0.22 0.00 0.00 9.76
S.D. 0.00 0.00 0.00 0.00 2.04 2.66 3.90 4.02 3.32 1.30 0.00 0.00 9.15
SKEW 0.00 0.00 0.00 0.00 7.34 2.10 1.38 2.52 3.39 6.93 0.00 0.00 1.93
MAX 0.00 0.00 0.00 0.00 18.20 13.20 15.10 23.30 20.20 10.70 0.00 0.00 56.70
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 0.00
NO YRS 96 95 95 96 97 97 99 98 98 98 97 97 93