WILMINGTON PORTER RSVR, DELAWARE

Monthly Total Snowfall (Inches)

(079605)

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
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 1.00 0.00 7.00 0.00 0.00 z 0.00 z 8.00
1932-33 0.00 z 0.00 z 0.00 z 0.00 z 0.00 15.00 z 0.00 13.00 4.00 0.00 0.00 z 0.00 z 17.00
1933-34 0.00 z 0.00 z 0.00 z 0.00 z 0.50 5.50 0.00 26.30 r 12.60 0.00 0.00 z 0.00 z 18.60
1934-35 0.80 z 0.00 z 0.00 z 0.00 0.00 0.80 w 27.00 11.90 s 1.00 0.00 0.00 z 0.00 z 28.00
1935-36 0.00 z 0.00 z 0.00 z 0.00 z 0.80 14.50 16.00 v 11.00 0.00 0.00 0.00 z 0.00 z 26.30
1936-37 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.50 0.00 5.00 7.50 y 0.00 0.00 z 0.00 z 5.50
1937-38 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00 0.90 x 3.50 3.00 0.00 0.00 z 0.00 z 6.50
1938-39 0.00 z 0.00 z 0.00 z 0.00 z 8.50 0.30 15.70 u 0.00 2.50 0.00 0.00 z 0.00 z 11.30
1939-40 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.50 4.70 9.60 v 2.40 w 2.50 0.00 z 0.00 z 8.70
1940-41 0.00 z 0.00 z 0.00 z 2.00 0.00 5.00 5.50 6.60 9.00 w 0.00 z 0.00 z 0.00 z 19.10
1941-42 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 4.00 2.30 2.20 0.00 0.00 z 0.00 z 8.50
1942-43 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.00 5.10 1.00 8.00 0.00 0.00 0.00 19.10
1943-44 0.00 0.00 0.00 0.00 0.00 0.00 2.50 3.70 9.50 1.00 0.00 0.00 z 16.70
1944-45 0.00 0.00 0.00 0.00 0.00 4.90 7.00 6.50 0.00 0.00 0.00 z 0.00 18.40
1945-46 0.00 0.00 0.00 0.00 0.00 10.50 1.00 2.00 0.00 0.00 0.00 0.00 13.50
1946-47 0.00 0.00 0.00 0.00 0.00 0.50 3.50 z 14.40 u 2.30 y 0.00 0.00 0.00 0.50
1947-48 0.00 0.00 0.00 0.00 0.00 6.00 6.80 o 8.80 w 1.10 0.00 0.00 0.00 z 7.10
1948-49 0.00 z 0.00 z 0.00 z 0.00 z 0.00 5.00 4.70 7.50 1.00 0.00 0.00 0.00 18.20
1949-50 0.00 0.00 0.00 b 0.00 0.00 0.00 0.60 0.40 0.20 0.00 0.00 0.00 1.20
1950-51 0.00 0.00 0.00 0.00 1.00 0.60 2.40 1.80 0.10 0.00 0.00 0.00 5.90
1951-52 0.00 0.00 0.00 0.00 0.00 6.10 3.50 a 0.00 f 6.50 0.00 0.00 0.00 16.10
1952-53 0.00 0.00 0.00 0.00 1.80 3.50 2.10 1.20 5.00 0.00 0.00 0.00 13.60
1953-54 0.00 0.00 0.00 0.00 10.50 0.00 10.30 0.30 0.00 0.00 0.00 0.00 a 21.10
1954-55 0.00 0.00 0.00 0.00 0.00 0.00 4.30 6.20 0.00 a 0.00 0.00 0.00 10.50
1955-56 0.00 0.00 0.00 0.00 4.00 1.30 9.30 0.00 9.50 0.00 0.00 0.00 24.10
1956-57 0.00 0.00 0.00 0.00 0.00 0.00 4.50 0.30 1.50 0.00 0.00 0.00 6.30
1957-58 0.00 0.00 0.00 0.00 0.00 8.80 3.00 13.50 21.00 0.00 0.00 0.00 46.30
1958-59 0.00 0.00 0.00 0.00 0.00 0.30 2.30 0.00 0.50 b 0.00 0.00 0.00 3.10
1959-60 0.00 0.00 0.00 0.00 0.00 4.00 0.00 z 2.60 11.00 0.00 0.00 0.00 17.60
1960-61 0.00 0.00 0.00 0.00 0.00 14.50 16.00 13.00 0.00 0.00 0.00 0.00 43.50
1961-62 0.00 0.00 0.00 0.00 3.00 4.00 1.60 10.90 4.00 0.00 0.00 0.00 23.50
1962-63 0.00 0.00 0.00 0.00 0.00 6.50 4.50 5.50 0.00 0.00 0.00 0.00 16.50
1963-64 0.00 0.00 0.00 0.00 0.00 7.50 6.00 16.00 7.10 0.00 0.00 0.00 36.60
1964-65 0.00 0.00 0.00 0.00 0.00 1.00 10.40 1.50 6.00 0.00 0.00 0.00 18.90
1965-66 0.00 0.00 0.00 0.00 0.00 0.00 15.70 8.90 0.00 0.00 0.00 0.00 24.60
1966-67 0.00 0.00 0.00 0.00 0.00 18.40 0.30 19.00 1.00 0.00 0.00 0.00 38.70
1967-68 0.00 0.00 0.00 0.00 6.30 3.50 0.90 0.80 0.00 b 0.00 0.00 0.00 11.50
1968-69 0.00 0.00 0.00 0.00 0.00 0.10 3.50 6.50 12.10 0.00 0.00 0.00 22.20
1969-70 0.00 0.00 0.00 0.00 0.10 7.00 10.90 1.80 0.00 0.00 0.00 0.00 19.80
1970-71 0.00 0.00 0.00 0.00 0.00 0.00 7.30 0.00 1.80 0.70 0.00 0.00 9.80
1971-72 0.00 0.00 0.00 0.00 0.00 0.00 2.50 8.30 0.00 0.00 0.00 0.00 10.80
1972-73 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
1973-74 0.00 0.00 0.00 0.00 0.00 4.00 1.00 10.00 0.00 0.00 0.00 0.00 15.00
1974-75 0.00 0.00 0.00 0.00 0.00 0.00 2.80 3.30 0.50 0.00 0.00 0.00 6.60
1975-76 0.00 0.00 0.00 0.00 0.00 0.00 1.50 c 0.00 z 4.00 0.00 0.00 0.00 5.50
1976-77 0.00 0.00 0.00 0.00 0.00 0.00 z 15.50 0.00 0.00 0.00 0.00 0.00 15.50
1977-78 0.00 0.00 0.00 0.00 0.00 0.00 11.00 19.50 3.50 a 0.00 0.00 0.00 34.00
1978-79 0.00 0.00 0.00 0.00 5.00 0.00 9.00 28.00 0.00 0.00 0.00 0.00 42.00
1979-80 0.00 0.00 0.00 0.00 0.00 2.00 5.50 0.50 2.00 0.00 0.00 0.00 10.00
1980-81 0.00 0.00 0.00 0.00 0.00 1.00 7.60 0.00 4.00 0.00 0.00 0.00 12.60
1981-82 0.00 0.00 0.00 0.00 0.00 0.00 z 11.60 b 3.20 0.00 0.00 0.00 0.00 14.80
1982-83 0.00 0.00 0.00 z 0.00 0.00 5.00 0.00 16.00 0.00 0.50 0.00 0.00 21.50
1983-84 0.00 0.00 0.00 0.00 0.00 0.00 9.00 0.00 5.50 0.00 0.00 0.00 14.50
1984-85 0.00 0.00 0.00 0.00 0.00 0.00 8.40 1.10 a 0.00 0.00 0.00 0.00 9.50
1985-86 0.00 0.00 0.00 0.00 0.00 2.00 0.00 b 9.50 0.00 0.00 0.00 0.00 11.50
1986-87 0.00 0.00 0.00 0.00 0.00 0.00 16.00 0.00 a 0.00 0.50 0.00 0.00 16.50
1987-88 0.00 0.00 0.00 0.00 1.00 0.00 6.50 0.00 z 0.00 0.00 0.00 0.00 7.50
1988-89 0.00 0.00 0.00 0.00 0.00 0.00 5.50 3.00 2.00 0.00 0.00 0.00 10.50
1989-90 0.00 0.00 0.00 0.00 4.50 4.50 a 0.60 1.00 2.00 0.00 0.00 0.00 12.60
1990-91 0.00 0.00 0.00 0.00 0.00 6.00 5.00 b 1.00 0.00 0.00 0.00 0.00 12.00
1991-92 0.00 0.00 0.00 0.00 0.00 0.00 1.00 0.30 2.00 0.00 0.00 0.00 3.30
1992-93 0.00 0.00 0.00 0.00 0.00 0.00 2.00 9.00 9.00 0.00 0.00 0.00 20.00
1993-94 0.00 0.00 0.00 0.00 0.00 1.00 1.50 a 11.50 a 3.00 0.00 0.00 0.00 17.00
1994-95 0.00 0.00 0.00 0.00 0.00 0.00 0.00 8.50 a 0.00 0.00 0.00 0.00 8.50
1995-96 0.00 0.00 0.00 0.00 3.00 2.00 a 24.50 b 13.00 c 6.00 b 0.00 0.00 0.00 48.50
1996-97 0.00 0.00 0.00 0.00 0.00 a 0.00 2.60 5.00 4.30 b 0.00 a 0.00 0.00 11.90
1997-98 0.00 0.00 0.00 0.00 0.00 0.00 b 0.00 0.00 b 0.00 0.00 0.00 0.00 0.00
1998-99 0.00 0.00 0.00 0.00 0.00 4.00 a 6.00 b 0.00 b 5.20 0.00 0.00 0.00 15.20
1999-00 0.00 0.00 0.00 0.00 0.00 0.00 19.00 a 0.00 0.00 1.10 0.00 0.00 20.10
2000-01 0.00 0.00 0.00 0.00 0.00 3.10 a 5.00 7.50 0.20 0.00 0.00 0.00 15.80
2001-02 0.00 0.00 0.00 0.00 0.00 0.00 6.00 b 0.00 0.00 0.00 0.00 0.00 6.00
2002-03 0.00 0.00 0.00 0.00 0.00 6.00 c 9.00 a 27.50 b 0.00 0.00 0.00 0.00 42.50
2003-04 0.00 0.00 0.00 0.00 0.00 11.40 a 11.30 c 0.00 b 2.40 0.00 0.00 0.00 25.10
2004-05 0.00 0.00 0.00 0.00 0.00 0.00 z 9.40 b 9.60 1.00 0.00 0.00 0.00 20.00
2005-06 0.00 0.00 0.00 0.00 0.00 b 5.00 b 0.00 c 10.40 0.00 0.00 0.00 0.00 15.40
2006-07 0.00 0.00 0.00 0.00 0.00 0.00 0.30 a 3.00 a 2.50 a 0.00 0.00 0.00 5.80
2007-08 0.00 0.00 0.00 0.00 0.00 1.80 0.10 2.00 0.00 0.00 0.00 0.00 3.90
2008-09 0.00 0.00 0.00 0.00 0.00 0.00 b 0.80 b 1.00 7.50 0.00 0.00 0.00 9.30
2009-10 0.00 0.00 a 0.00 0.00 0.00 0.00 1.00 b 2.00 0.00 0.00 0.00 a 0.00 3.00
2010-11 0.00 0.00 0.00 0.00 0.00 3.00 a 26.00 5.00 x 0.00 z 0.00 z 0.00 z 0.00 z 29.00
2011-12 0.00 z 0.00 z 0.00 z 1.30 0.00 z 0.00 z 0.80 z 0.60 z 0.00 z 0.00 z 0.00 z 0.00 z 1.30
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.05 0.66 2.81 5.76 5.45 2.74 0.08 0.00 0.00 16.68
S.D. 0.00 0.00 0.00 0.28 1.91 3.91 6.20 6.44 3.93 0.34 0.00 0.00 12.31
SKEW 0.00 0.00 0.00 6.09 3.45 1.84 1.62 1.54 2.05 5.40 0.00 0.00 1.07
MAX 0.00 0.00 0.00 2.00 10.50 18.40 27.00 28.00 21.00 2.50 0.00 0.00 48.50
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 0.00
NO YRS 67 67 66 71 76 74 74 71 75 78 67 66 54