DIABLO DAM, WA

Total of Snowfall (Inches)

(452157)

File last updated on March 29, 2024
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)JULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNANN
1914-15-----z-----z-----z-----z-----z2.50w0.50 1.00 0.00 0.00 0.00u0.00 1.50g
1915-16-----z0.00 -----z-----z16.00 25.70 23.30 52.00 37.00 2.80 -----z-----z156.80e
1916-17-----z0.00 -----z-----z-----z39.60 45.00 -----z48.50 0.10 -----z0.00 133.20f
1917-180.00 0.00 0.00 0.00 -----z38.20l15.80q33.60m12.30 0.00 0.00 -----z12.30e
1918-190.00 -----z-----z-----z4.50 17.20 15.40q74.20m36.30v0.00 -----z-----z21.70h
1919-200.00 -----z0.00 2.50 1.50 4.50 16.50 -----z22.50 -----z0.00 -----z47.50d
1920-21-----z-----z0.00 0.50 0.00 22.00 50.10k8.10s18.30v1.30y0.00 0.00 22.50f
1921-220.00 -----z0.00 0.00 27.70v-----z55.50 45.00 43.00 2.50 0.00 0.00 146.00c
1922-230.00 0.00 0.00 0.00 0.00 -----z64.80 35.00 30.50 0.00 0.00 0.00 130.30a
1923-24-----z-----z-----z-----z0.00 11.00u-----z0.00 -----z0.00 -----z0.00 0.00h
1924-25-----z-----z-----z-----z5.80 33.70t-----z-----z-----z-----z-----z-----z5.80k
1925-26-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
1926-27-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
1927-28-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
1928-29-----z-----z0.00 0.00 0.00 6.90 29.80 19.60 2.70 2.60 0.00 0.00 61.60b
1929-300.00 0.00 0.00 0.00 0.00 31.50a7.30 4.20 1.20 0.00 0.00 0.00 44.20
1930-310.00 0.00 0.00 0.00 10.90 0.50 0.00 0.00 0.00 0.00 0.00 0.00 11.40
1931-320.00 0.00 0.00 0.00 20.00 12.00a25.80 16.10 15.20 0.00 0.00 0.00 89.10
1932-330.00 0.00 -----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00j
1933-34-----z-----z-----z-----z-----z-----z9.60 0.00 3.00 -----z0.00 0.00 12.60g
1934-350.00 0.00 0.00 0.00 0.00 16.00b81.00b0.00 20.00 0.00 0.00 0.00 117.00
1935-360.00 0.00 0.00 0.00 6.50 0.00 46.00 67.80 15.00 0.00 0.00 0.00 135.30
1936-370.00 0.00 0.00 0.00 0.00 5.00 48.50 69.00 0.00a0.00 0.00 0.00 122.50
1937-380.00 0.00 0.00 0.00 17.50 56.00 14.50a9.50 29.00 0.00 0.00 0.00 126.50
1938-390.00 0.00 0.00 0.00 8.00 39.30 17.20 26.00b19.50 0.00 0.00 0.00 110.00
1939-400.00 0.00 0.00 1.00 0.00 0.00 6.00 4.50 0.00 0.00 0.00 0.00 11.50
1940-410.00 0.00 0.00 0.00 0.00 4.80 5.10 4.50 0.00 0.00 0.00 0.00 14.40
1941-420.00 0.00 0.00 0.00 0.00 12.00 1.00a0.70 2.50 0.00 0.00 0.00 16.20
1942-430.00 0.00 0.00 0.00 5.30 29.60a62.30b19.50 4.00 0.00 0.00 0.00 120.70
1943-440.00 0.00 0.00 0.00 0.00 0.00 17.00 3.50 14.00 0.00 0.00 0.00 34.50
1944-450.00 0.00 0.00a0.00 0.00 1.00 2.80 0.00 3.00 9.50 0.00 0.00 16.30
1945-460.00 0.00 0.00 0.00 6.00 3.00 28.40 14.80 0.20 1.50 0.00 0.00 53.90
1946-470.00 0.00 0.00 0.00 25.00 12.50 38.50a18.00a0.00 0.00 0.00 0.00 94.00
1947-480.00 0.00b0.00 0.00 0.00 9.00 8.50 22.00 3.30 0.00 0.00 0.00 42.80
1948-490.00 0.00 0.00 0.00 20.50 39.00 9.50 66.90 1.00 0.00 0.00 0.00 136.90
1949-500.00 0.00 0.00 0.00 1.20 16.50b48.00 5.00f1.00b0.00 0.00 0.00 66.70a
1950-510.00 0.00 0.00 0.00 0.00d3.50 3.00j4.00a21.50 0.00 0.00 0.00 29.00a
1951-520.00 0.00 0.00 0.00 0.00 57.50a43.40 0.50 0.00 0.00 0.00 0.00 101.40
1952-530.00 0.00 0.00 0.00 0.00 0.00s20.00 3.50 0.00 0.00 0.00 0.00 23.50a
1953-540.00 0.00 0.00 0.00 0.00 -----z44.00w25.00 0.00c0.00 0.00 0.00 25.00b
1954-550.00 0.00 0.00 0.00 0.00 7.00 3.50d18.30 33.50 0.00 0.00 0.00 62.30
1955-560.00 0.00 0.00 0.00 -----z16.00m11.50 13.00d8.00e0.00 0.00 0.00 32.50b
1956-570.00 0.00 0.00 0.00a2.00 0.00k27.50c32.00 7.50 0.00 0.00 0.00 69.00a
1957-580.00 0.00 0.00 0.00 0.00a0.00m1.00 0.00 0.00a0.00 0.00 0.00 1.00a
1958-590.00 0.00 0.00 0.00 0.00s18.00 0.00g6.00 0.00c0.00 0.00 0.00 24.00b
1959-600.00 0.00 0.00 0.00 8.00 0.50 20.00 3.00 18.00 2.50 0.00 0.00 52.00
1960-610.00 0.00 0.00 0.00 3.00 1.00 16.30 0.00 2.00a0.00 0.00 0.00 22.30
1961-620.00 0.00 0.00 0.00a7.00 12.00j19.00 0.00 14.70 0.00 0.00 0.00 40.70a
1962-630.00 0.00 0.00 0.00 0.00d0.00 -----z0.00b0.00 0.00 0.00 0.00 0.00a
1963-640.00 0.00 0.00 0.00 5.00 -----z35.00 0.00 1.00 0.00 0.00 0.00 41.00a
1964-650.00 0.00 0.00 0.00 8.00 47.00 24.50 -----z0.00 0.00 0.00 0.00 79.50a
1965-66-----z0.00 0.00 0.00 0.00 39.00 14.00 -----z7.00 0.00 0.00 0.00 60.00b
1966-670.00 0.00 0.00 0.00 1.50 3.30 -----z4.50 -----z0.00 0.00 0.00 9.30b
1967-680.00 0.00 0.00 0.00 4.00 25.00 26.40b0.00 0.70 0.00 0.00 0.00 56.10
1968-690.00 0.00 0.00 0.00 0.00 -----z-----z8.60 2.00 0.00 0.00 0.00 10.60b
1969-700.00 0.00 0.00 0.00 0.00 1.00 42.00 0.00a0.00 0.00 0.00 0.00 43.00
1970-710.00 0.00 0.00 0.00 11.60 34.80 31.90b-----z9.00b0.00 0.00 0.00 87.30a
1971-720.00 0.00 0.00 0.00a0.00 15.30f36.50 7.00 9.50 0.00 0.00 0.00 53.00a
1972-730.00 0.00 0.00 0.00 0.00 19.50 -----z6.00 0.00 0.00 0.00 0.00 25.50a
1973-740.00 0.00 0.00 0.00 14.00 2.00 18.00 4.30 3.50 0.00 0.00 0.00 41.80
1974-750.00 0.00 0.00 0.00 0.00 4.00e33.50 24.40 0.30 0.00 0.00 0.00 62.20
1975-760.00 0.00 0.00 0.00 -----z-----z34.00 -----z-----z0.00a0.00 0.00 34.00d
1976-770.00 0.00 0.00 0.00 0.00 0.00 10.00 1.00 0.50 0.00 0.00 0.00 11.50
1977-780.00 0.00 0.00 0.00 -----z26.60b19.00b19.00 0.00 0.00 0.00 0.00 64.60a
1978-790.00 0.00 0.00 0.00 2.00 8.40b13.10d20.60 0.00 0.00a0.00 0.00 44.10
1979-800.00 0.00 0.00 0.00 0.00 8.00 11.00b12.30 3.50 0.00 0.00 0.00 34.80
1980-810.00 0.00 0.00 0.00 0.00 15.30 0.50 7.00 0.00 0.00 0.00 0.00 22.80
1981-820.00 0.00 0.00 0.00 0.00 5.50 57.00 31.30 -----z0.00a0.00 0.00 93.80a
1982-830.00 0.00 0.00 0.00 1.00 1.00 7.00 1.00 0.40 0.00 0.00 0.00 10.40
1983-840.00 0.00 0.00 0.00 0.00 17.50 1.00 0.40 0.00 0.00 0.00 0.00 18.90
1984-850.00 0.00 0.00 1.00 9.00a-----z-----z37.00 -----z0.00 0.00 0.00 47.00c
1985-860.00 0.00 0.00 0.00 14.00a6.70 3.50 9.50a0.00 0.00 0.00 0.00 33.70
1986-870.00 0.00 0.00 0.00 0.00 0.00a3.50b2.00 5.00 0.00 0.00 0.00 10.50
1987-88-----z0.00 0.00 0.00 0.00 6.00d9.00 9.00a2.00 0.00 0.00 0.00 26.00a
1988-890.00 0.00 0.00 0.00 4.00 0.00 23.50b7.00 4.00 0.00b0.00 0.00 38.50
1989-900.00 0.00 0.00 0.00 0.00 0.00 10.80a51.50 2.00 0.00 0.00 0.00 64.30
1990-910.00 0.00 0.00 0.00 0.00 37.00 30.00 0.00 14.00 0.00 0.00 0.00 81.00
1991-920.00 0.00 0.00 0.00 0.00 0.00 0.00b0.00a0.00 0.00 0.00 0.00 0.00
1992-930.00 0.00 0.00 0.00 0.00b17.00d25.00 0.20 0.00 0.00 0.00 0.00 42.20
1993-940.00 0.00 0.00 0.00 0.00a0.00 0.00 25.00 1.00 0.00 0.00 0.00 26.00
1994-950.00 0.00 0.00 0.00 15.00 20.50 0.00 27.00 4.00 0.00 0.00 0.00 66.50
1995-960.00 0.00 0.00 0.00 0.00 5.00 35.00a12.00 1.30 0.00 0.00 0.00 53.30
1996-970.00 0.00 0.00 0.00 11.00a72.00b16.00a1.00 -----z0.00 0.00 0.00 100.00a
1997-980.00 0.00 -----z0.00 0.00a2.50 23.50 0.00b0.00a0.00 0.00 0.00 26.00a
1998-990.00 0.00 0.00 0.00 0.00 25.00a0.00d2.50a0.00a0.00a0.00 0.00 27.50
1999-000.00 0.00 0.00 0.00 0.00 4.30a32.00 4.50 0.00a0.00 0.00 0.00 40.80
2000-010.00 0.00 0.00 0.00 4.50 23.00 0.00 3.50 1.00 0.00 0.00a0.00 32.00
2001-020.00 0.00 0.00 0.00 2.00 18.80 27.30 0.30a30.00a0.00 0.00 0.00 78.40
2002-030.00 0.00 0.00 0.00 0.00 7.00 0.00 0.00 10.00 0.00 0.00 0.00 17.00
2003-040.00 0.00 0.00 0.00 6.50 24.00 16.50 0.00 0.00 0.00 0.00 0.00 47.00
2004-050.00 0.00 0.00 0.00 0.00 1.00 11.30 0.00 2.00 0.00 0.00 0.00 14.30
2005-060.00 0.00 0.00 0.00 1.00 4.50 3.00 4.50 5.00 0.00 0.00 0.00 18.00
2006-070.00 0.00 0.00 0.00 20.80 2.50 12.60 1.80 1.00 0.00 0.00 0.00 38.70
2007-080.00 0.00 0.00 0.00 2.00 70.80 61.50a33.00 10.00 0.00 0.00 0.00 177.30
2008-090.00 0.00 0.00 0.00 0.00 70.50 46.50a0.50 13.00 6.50 0.00 0.00 137.00
2009-100.00b0.00 0.00 0.00 2.50 11.30 0.00 0.00 2.50 0.00 0.00 0.00 16.30
2010-110.00 0.00 0.00 0.00 9.50 15.00 12.00 13.00 5.00 4.00l0.00l0.00 54.50b
2011-120.00 0.00l0.00h0.00f3.00b1.00e27.50 4.50 7.00 0.00 0.00a0.00 43.00c
2012-130.00 0.00 0.00 0.00 0.00a17.00 7.50 1.00 2.00 0.00 0.00 0.00 27.50
2013-140.00 0.00 0.00b0.00a0.00 3.00 0.00 27.80 20.00a0.00 0.00a0.00 50.80
2014-150.00a0.00 0.00a0.00a0.30 1.00a4.00 0.00a0.00b0.00a0.00c0.00b5.30
2015-160.00 0.00d0.00 0.00a2.50 11.00 0.20 1.00 0.00 0.00 0.00 0.00 14.70
2016-170.00 0.00 0.00 0.00a0.00a38.60 13.50 46.50 15.00 0.00 0.00 0.00 113.60
2017-180.00 0.00 0.00 0.00 0.00b17.00 4.00 22.20 0.00 0.50 0.00 0.00 43.70
2018-190.00 0.00 0.00 0.00a0.00 5.20 3.80 18.00a0.50 0.00c0.00 0.00 27.50
2019-200.00 0.00 0.00a0.00 0.00 11.00 40.10 8.00 1.50 0.00 0.00 0.00 60.60
2020-210.00 0.00 0.00 0.00 1.50 5.00 1.00 7.20 1.00 0.00 0.00 0.00 15.70
2021-220.00 0.00 0.00 0.00a0.00 37.00 40.50 6.00 0.50 0.00 0.00 0.00 84.00
2022-230.00 0.00b0.00 0.00b11.00a39.70b0.00 12.00 6.50 0.00 0.00 0.00a69.20
2023-240.00 0.00 0.00a0.00h0.00 4.50 21.20 9.50 1.90c-----z-----z-----z37.10d
Period of Record Statistics
MEAN0.00 0.00 0.00 0.05 3.46 15.73 19.94 12.22 6.59 0.28 0.00 0.00 53.13
S.D.0.00 0.00 0.00 0.29 5.72 17.55 18.22 16.21 10.26 1.25 0.00 0.00 40.59
SKEW0.00 0.00 0.00 6.85 1.88 1.48 0.98 1.81 2.08 5.61 0.00 0.00 1.02
MAX0.00 0.00 0.00 2.50 25.00 72.00 81.00 69.00 48.50 9.50 0.00 0.00 177.30
MIN0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
YRS97 97 97 97 97 88 93 95 97 100 98 100 65