DIABLO DAM, WASHINGTON

Monthly Total Cooling Degree Days

(452157)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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.
Months with 5 missing days or less use mean for missing day(s)
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 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1931 0.00 0.00 0.00 0.00 0.00 11.00 48.50 43.50 0.00 0.00 0.00 0.00 z 103.00
1932 0.00 e 0.00 0.00 0.00 0.00 0.00 z 17.50 m 48.00 0.00 z 0.00 z 0.00 z 0.00 z 48.00
1933 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 0.00 0.00 0.00 0.00 z 11.50 7.50 18.00 83.00 23.50 0.00 0.00 0.00 143.50
1935 0.00 0.00 0.00 0.00 0.00 15.00 86.50 46.50 44.00 0.00 0.00 0.00 192.00
1936 0.00 0.00 0.00 0.00 11.00 11.00 25.50 36.50 10.50 0.00 0.00 0.00 94.50
1937 0.00 0.00 0.00 0.00 0.00 22.50 59.50 48.50 17.00 0.00 0.00 0.00 147.50
1938 0.00 0.00 0.00 0.00 2.50 20.50 152.50 47.00 66.50 0.00 0.00 0.00 289.00
1939 0.00 0.00 0.00 0.00 13.00 15.00 111.50 150.00 12.50 0.00 0.00 0.00 302.00
1940 0.00 0.00 0.00 0.00 9.50 40.00 46.00 95.50 67.50 0.00 0.00 0.00 258.50
1941 0.00 0.00 0.00 0.00 7.00 16.00 179.50 85.50 0.00 0.00 0.00 0.00 288.00
1942 0.00 0.00 0.00 0.00 3.00 12.50 138.00 160.50 39.00 0.00 0.00 0.00 353.00
1943 0.00 m 0.00 z 0.00 s 0.00 a 0.00 8.28 a 37.00 31.00 28.97 a 3.10 a 0.00 f 0.00 a 108.34
1944 0.00 0.00 0.00 0.00 5.50 22.24 a 78.00 27.00 31.55 a 0.00 0.00 0.00 164.29
1945 0.00 0.00 0.00 0.00 1.50 17.00 70.50 79.00 8.79 a 0.00 0.00 a 0.00 176.79
1946 0.00 0.00 0.00 0.00 0.00 3.50 49.50 69.00 14.50 0.00 0.00 0.00 136.50
1947 0.00 0.00 0.00 0.00 8.50 4.00 14.50 31.53 b 9.50 0.00 z 0.00 0.00 68.03
1948 0.00 0.00 0.00 0.00 5.00 36.50 23.50 18.50 9.00 0.00 0.00 0.00 92.50
1949 0.00 0.00 0.00 0.00 2.00 6.50 38.50 42.50 30.00 0.00 a 0.00 a 0.00 119.50
1950 0.00 0.00 0.00 0.00 a 0.00 21.00 103.50 75.36 b 20.50 0.00 0.00 0.00 220.36
1951 0.00 0.00 0.00 0.00 4.13 a 30.00 96.00 66.50 38.50 0.00 0.00 0.00 235.13
1952 0.00 0.00 0.00 0.00 4.00 3.00 108.00 97.50 41.50 0.00 0.00 0.00 254.00
1953 0.00 0.00 0.00 0.00 2.50 0.00 88.50 63.50 35.00 0.00 0.00 0.00 g 189.50
1954 0.00 z 0.00 0.00 0.00 0.00 2.50 7.00 9.00 1.00 0.00 0.00 0.00 19.50
1955 0.00 0.00 0.00 0.00 0.00 a 31.50 26.50 51.50 40.50 0.00 0.00 0.00 150.00
1956 0.00 0.00 0.00 0.00 20.00 1.50 77.50 86.00 5.50 0.00 0.00 0.00 190.50
1957 0.00 0.00 0.00 0.50 15.50 17.00 21.50 14.50 52.50 2.50 0.00 0.00 124.00
1958 0.00 0.00 0.00 0.00 55.50 82.00 251.00 157.50 21.50 0.00 0.00 0.00 567.50
1959 0.00 0.00 0.00 0.00 3.50 22.50 114.50 27.50 2.00 0.00 0.00 0.00 170.00
1960 0.00 0.00 0.00 0.00 0.00 13.00 145.50 59.50 7.00 0.00 0.00 0.00 225.00
1961 0.00 0.00 0.00 s 0.00 e 8.50 43.00 106.50 178.00 1.00 0.00 0.00 0.00 337.00
1962 0.00 0.00 0.00 0.00 c 0.00 11.50 79.50 24.00 12.50 0.00 0.00 0.00 127.50
1963 0.00 0.00 0.00 0.00 17.50 27.50 15.00 84.00 43.00 0.00 0.00 0.00 187.00
1964 0.00 0.00 0.00 0.00 2.00 4.00 44.50 34.50 0.00 0.00 0.00 0.00 85.00
1965 0.00 0.00 0.00 0.00 1.00 14.00 0.00 z 107.00 2.50 0.00 0.00 0.00 124.50
1966 0.00 0.00 z 0.00 0.00 13.00 17.50 29.50 70.00 18.00 0.00 0.00 0.00 148.00
1967 0.00 0.00 0.00 0.00 0.50 34.50 38.50 179.05 b 36.50 0.00 0.00 0.00 289.05
1968 0.00 0.00 0.00 0.00 3.50 12.50 82.00 54.00 12.00 0.00 0.00 0.00 164.00
1969 0.00 0.00 0.00 0.00 18.50 82.00 42.00 21.50 27.00 0.00 0.00 0.00 191.00
1970 0.00 0.00 0.00 0.00 1.00 89.50 89.50 64.00 2.00 0.00 0.00 0.00 246.00
1971 0.00 0.00 0.00 0.00 1.00 0.00 106.50 111.50 0.00 0.00 0.00 0.00 219.00
1972 0.00 0.00 0.00 0.00 6.00 2.00 25.00 82.50 21.50 0.00 0.00 0.00 137.00
1973 0.00 0.00 0.00 0.00 12.00 33.50 90.50 49.50 26.00 0.00 0.00 0.00 211.50
1974 0.00 0.00 0.00 0.00 0.00 24.50 35.50 103.50 38.00 0.00 0.00 0.00 201.50
1975 0.00 0.00 e 0.00 0.00 0.00 4.50 78.50 f 22.65 e 35.50 0.00 0.00 0.00 62.65
1976 0.00 0.00 0.00 0.00 0.00 13.50 19.00 15.00 10.50 0.00 0.00 0.00 58.00
1977 0.00 0.00 0.00 6.00 0.00 20.50 32.60 b 208.50 3.50 0.00 0.00 m 0.00 271.10
1978 0.00 0.00 0.00 0.00 b 3.00 63.50 96.00 76.00 1.00 0.00 0.00 0.00 239.50
1979 0.00 0.00 0.00 0.00 10.00 20.50 96.00 66.00 13.00 0.00 0.00 0.00 205.50
1980 0.00 0.00 0.00 0.00 a 1.50 0.50 55.50 37.00 2.00 0.00 0.00 0.00 96.50
1981 0.00 0.00 0.00 0.00 7.00 1.50 58.00 173.00 25.00 0.00 0.00 0.00 264.50
1982 0.00 0.00 0.00 0.00 0.00 34.50 50.00 56.50 7.00 0.00 0.00 0.00 148.00
1983 0.00 0.00 0.00 0.00 39.50 11.50 26.00 44.50 3.50 0.00 0.00 0.00 125.00
1984 0.00 0.00 0.00 0.00 0.00 9.00 68.50 63.50 4.00 0.00 0.00 0.00 z 145.00
1985 0.00 z 0.00 0.00 z 0.00 5.00 17.50 149.00 46.00 0.00 0.00 0.00 0.00 217.50
1986 0.00 0.00 0.00 0.00 18.50 46.00 14.00 159.50 17.50 0.00 0.00 0.00 255.50
1987 0.00 0.00 0.00 1.00 17.00 62.50 0.00 z 87.50 55.50 0.00 0.00 0.00 223.50
1988 0.00 0.00 0.00 0.00 10.50 18.50 69.00 75.00 59.50 0.00 0.00 0.00 232.50
1989 0.00 0.00 0.00 0.00 0.00 52.50 37.00 31.00 19.50 0.00 0.00 0.00 140.00
1990 0.00 0.00 0.00 0.00 0.50 22.00 147.50 124.50 20.50 0.00 0.00 0.00 315.00
1991 0.00 0.00 0.00 0.00 0.00 6.00 50.50 111.50 20.00 2.00 0.00 0.00 190.00
1992 0.00 0.00 0.00 0.00 27.50 79.00 74.00 116.50 1.50 0.00 0.00 0.00 a 298.50
1993 0.00 0.00 0.00 0.00 35.00 6.50 5.00 70.50 46.50 0.00 0.00 0.00 163.50
1994 0.00 0.00 0.00 0.00 3.00 4.50 114.50 58.50 16.00 0.00 0.00 0.00 196.50
1995 0.00 0.00 0.00 0.00 7.50 28.00 102.50 15.00 55.00 0.00 0.00 0.00 208.00
1996 0.00 0.00 0.00 0.00 0.00 10.50 155.50 101.50 1.00 0.00 0.00 0.00 268.50
1997 0.00 0.00 0.00 z 0.00 1.00 3.50 38.00 107.50 0.00 z 0.00 0.00 0.00 150.00
1998 0.00 0.00 0.00 1.50 9.00 25.50 147.00 118.50 53.50 0.00 0.00 0.00 355.00
1999 0.00 0.00 0.00 0.00 4.00 12.00 40.00 60.50 8.50 0.00 0.00 0.00 125.00
2000 0.00 0.00 0.00 0.00 0.00 37.00 39.00 50.50 5.50 0.00 0.00 0.00 132.00
2001 0.00 0.00 0.00 0.00 14.47 a 12.50 37.00 79.00 11.00 0.00 0.00 0.00 153.97
2002 0.00 0.00 0.00 0.00 0.00 34.50 77.00 71.00 12.50 0.00 0.00 0.00 195.00
2003 0.00 0.00 0.00 0.00 6.50 64.50 129.50 103.50 53.00 0.00 0.00 0.00 357.00
2004 0.00 0.00 0.00 0.00 2.00 61.00 143.50 144.00 4.00 0.00 0.00 0.00 354.50
2005 0.00 0.00 0.00 0.00 29.00 1.00 57.00 108.00 1.00 0.00 0.00 0.00 196.00
2006 0.00 0.00 0.00 0.00 15.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 15.50
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.12 7.15 22.92 73.27 75.90 20.62 0.11 0.00 0.00 208.32
S.D. 0.00 0.00 0.00 0.73 10.20 21.64 48.63 45.10 18.74 0.52 0.00 0.00 87.61
SKEW 0.00 0.00 0.00 7.46 2.38 1.42 0.99 0.87 0.81 4.82 0.00 0.00 1.28
MAX 0.00 0.00 0.00 6.00 55.50 89.50 251.00 208.50 67.50 3.10 0.00 0.00 567.50
MIN 0.00 0.00 0.00 0.00 0.00 0.00 5.00 9.00 0.00 0.00 0.00 0.00 58.00
NO YRS 72 73 71 74 75 73 70 74 72 72 71 70 58