BONNEVILLE DAM, OREGON

Monthly Total Cooling Degree Days

(350897)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1937 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 o 0.00 e 0.00
1938 0.00 a 0.00 b 0.00 0.00 a 5.00 f 65.50 f 230.00 74.92 a 88.45 a 2.07 a 0.00 a 0.00 e 395.43
1939 0.00 g 0.00 a 0.00 0.00 16.00 10.00 132.50 188.00 55.00 0.00 0.00 0.00 a 401.50
1940 0.00 a 0.00 0.00 0.00 21.50 105.50 127.50 190.00 47.00 2.50 0.00 0.00 494.00
1941 0.00 0.00 0.00 0.00 26.50 28.00 219.50 116.00 3.00 0.00 0.00 0.00 393.00
1942 0.00 a 0.00 0.00 0.00 11.00 27.50 189.50 172.50 70.50 4.00 0.00 0.00 475.00
1943 0.00 0.00 0.00 0.00 4.00 17.50 94.00 50.50 96.00 18.00 0.00 0.00 280.00
1944 0.00 0.00 0.00 0.00 9.00 20.00 112.50 96.00 76.50 0.00 0.00 0.00 314.00
1945 0.00 0.00 0.00 0.00 4.50 39.50 130.00 102.00 14.50 4.50 0.00 0.00 295.00
1946 0.00 0.00 0.00 0.00 2.00 11.50 106.50 102.00 22.00 0.00 0.00 0.00 244.00
1947 0.00 0.00 0.00 0.00 20.00 5.50 52.00 39.00 37.50 0.00 0.00 0.00 154.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 51.00 43.00 49.50 0.00 0.00 0.00 143.50
1949 0.00 a 0.00 0.00 0.00 12.00 12.50 67.50 77.50 53.00 0.00 0.00 0.00 222.50
1950 0.00 0.00 0.00 0.00 4.00 40.00 69.50 144.00 41.00 0.00 0.00 0.00 298.50
1951 0.00 0.00 0.00 0.00 6.50 39.50 133.00 69.00 73.00 0.50 0.00 0.00 321.50
1952 0.00 0.00 0.00 a 0.00 14.50 9.50 143.00 118.00 80.50 20.00 0.00 0.00 385.50
1953 0.00 0.00 0.00 0.00 7.00 2.50 110.00 97.00 63.00 0.00 0.00 0.00 279.50
1954 0.00 0.00 0.00 0.00 6.50 10.00 16.00 21.50 23.50 0.00 0.00 0.00 77.50
1955 0.00 0.00 0.00 0.00 0.50 47.00 18.50 68.00 57.00 0.00 0.00 0.00 191.00
1956 0.00 0.00 0.00 0.00 b 39.00 7.00 148.50 86.00 26.00 0.00 0.00 0.00 306.50
1957 0.00 0.00 0.00 0.00 12.50 16.00 61.00 26.50 92.50 2.00 0.00 0.00 210.50
1958 0.00 0.00 0.00 0.00 17.50 89.00 213.50 194.50 47.50 3.50 0.00 0.00 565.50
1959 0.00 0.00 0.00 0.00 6.50 27.00 136.50 75.00 12.50 0.00 0.00 0.00 257.50
1960 0.00 0.00 0.00 0.50 0.00 d 29.50 157.50 78.00 32.50 0.00 0.00 0.00 298.00
1961 0.00 0.00 0.00 0.00 8.00 108.50 163.50 200.50 15.00 0.00 0.00 a 0.00 495.50
1962 0.00 0.00 a 0.00 0.00 0.00 26.00 98.50 67.00 47.00 0.00 0.00 0.00 238.50
1963 0.00 0.00 0.00 0.00 35.50 35.00 20.00 80.00 104.00 0.00 0.00 0.00 274.50
1964 0.00 0.00 0.00 0.00 4.50 16.00 86.00 65.50 1.50 0.00 0.00 0.00 173.50
1965 0.00 0.00 0.00 0.00 0.00 11.00 146.00 56.00 k 8.50 2.50 0.00 a 0.00 168.00
1966 0.00 g 0.00 0.00 0.00 8.50 29.48 a 65.50 91.00 38.00 0.00 0.00 0.00 232.48
1967 0.00 0.00 0.00 0.00 8.50 69.50 159.00 256.50 104.50 0.00 0.00 0.00 598.00
1968 0.00 0.00 0.00 0.50 0.00 38.50 117.00 62.50 41.00 0.00 0.00 0.00 259.50
1969 0.00 0.00 0.00 0.00 24.00 79.00 57.00 38.00 49.00 0.00 0.00 0.00 247.00
1970 0.00 0.00 0.00 0.00 7.50 89.00 105.50 85.00 6.00 6.50 0.00 0.00 299.50
1971 0.00 0.00 0.00 0.00 7.50 9.50 112.50 145.50 6.00 2.50 0.00 0.00 283.50
1972 0.00 0.00 0.00 0.00 27.00 8.50 125.00 152.50 34.00 0.00 0.00 0.00 347.00
1973 0.00 0.00 0.00 0.00 26.50 47.50 111.50 54.50 33.00 0.00 0.00 0.00 273.00
1974 0.00 0.00 0.00 0.00 0.00 39.00 74.50 106.00 88.00 1.00 0.00 0.00 308.50
1975 0.00 0.00 0.00 0.00 4.00 35.00 110.50 39.00 103.50 7.50 0.00 0.00 299.50
1976 0.00 0.00 0.00 0.00 8.00 19.50 73.50 42.50 45.00 0.00 0.00 0.00 188.50
1977 0.00 0.00 0.00 0.00 0.00 38.50 85.00 230.50 10.00 0.00 0.00 0.00 364.00
1978 0.00 0.00 0.00 0.00 7.00 73.50 125.50 111.00 23.50 1.50 0.00 0.00 342.00
1979 0.00 0.00 0.00 0.00 8.50 47.50 133.50 77.50 63.00 3.50 0.00 0.00 333.50
1980 0.00 e 0.00 0.00 2.00 3.50 2.00 110.50 64.00 37.50 9.76 d 0.00 0.00 229.26
1981 0.00 0.00 a 0.00 3.50 2.50 14.00 73.37 a 195.50 56.00 0.00 0.00 0.00 344.87
1982 0.00 0.00 0.00 0.00 8.50 88.00 80.50 103.50 42.00 0.00 0.00 0.00 322.50
1983 0.00 0.00 0.00 0.00 42.50 12.00 53.00 90.50 5.50 0.00 0.00 0.00 203.50
1984 0.00 0.00 0.00 0.00 4.50 21.00 102.50 100.00 15.00 0.00 0.00 0.00 243.00
1985 0.00 0.00 0.00 1.00 9.50 55.50 244.00 100.50 0.50 0.00 0.00 0.00 411.00
1986 0.00 0.00 a 0.00 0.00 29.50 83.50 42.50 215.00 39.50 2.00 0.00 0.00 412.00
1987 0.00 0.00 0.00 8.00 41.00 80.50 94.50 138.50 97.76 a 21.00 0.00 0.00 481.26
1988 0.00 0.00 0.00 0.00 15.50 54.50 151.50 126.00 78.00 24.50 0.00 0.00 450.00
1989 0.00 0.00 0.00 0.00 5.50 69.50 56.00 75.00 78.50 1.00 0.00 0.00 285.50
1990 0.00 0.00 0.00 1.50 4.50 43.50 187.50 178.00 78.50 0.00 0.00 0.00 493.50
1991 0.00 0.00 0.00 0.00 0.00 7.00 145.50 162.50 100.00 19.50 0.00 0.00 434.50
1992 0.00 0.00 0.00 0.50 51.50 123.00 180.50 180.00 44.00 4.00 0.00 0.00 583.50
1993 0.00 0.00 0.00 0.00 13.00 14.00 10.00 101.50 91.50 14.50 0.00 0.00 244.50
1994 0.00 0.00 0.00 0.00 11.00 17.50 181.50 149.50 84.00 0.50 0.00 0.00 444.00
1995 0.00 0.00 0.00 0.00 17.00 43.00 141.50 70.00 79.00 0.00 0.00 0.00 350.50
1996 0.00 0.00 0.00 1.50 0.00 a 19.00 192.00 106.50 9.00 10.00 0.00 0.00 338.00
1997 0.00 a 0.00 0.00 z 0.00 28.00 12.50 132.50 180.50 82.50 0.00 0.00 0.00 436.00
1998 0.00 0.00 0.00 7.00 12.50 19.50 151.50 118.00 88.00 3.00 0.00 0.00 399.50
1999 0.00 0.00 0.00 0.00 9.50 37.50 89.50 136.00 66.50 0.00 0.00 0.00 339.00
2000 0.00 0.00 a 0.00 0.00 2.58 a 78.10 a 87.00 106.50 43.00 0.00 0.00 a 0.00 317.19
2001 0.00 a 0.00 0.00 d 0.50 29.00 27.50 66.00 123.00 59.50 7.00 0.00 0.00 312.50
2002 0.00 0.00 0.00 0.00 2.50 54.83 a 156.50 106.00 44.50 0.00 0.00 0.00 364.33
2003 0.00 0.00 0.00 0.00 8.50 93.00 179.00 147.00 104.50 4.00 0.00 0.00 536.00
2004 0.00 0.00 0.00 2.00 6.00 76.50 204.50 179.50 13.50 0.00 0.00 0.00 482.00
2005 0.00 0.00 0.00 0.00 29.50 13.00 161.50 166.00 15.00 0.00 0.00 0.00 385.00
2006 0.00 0.00 0.00 0.00 26.50 75.00 181.00 118.00 52.50 0.00 0.00 0.00 453.00
2007 0.00 0.00 0.00 0.00 21.00 51.00 205.00 102.50 38.00 0.00 0.00 0.00 417.50
2008 0.00 0.00 0.00 0.00 29.50 34.00 j 109.00 132.00 56.00 4.50 0.00 0.00 331.00
2009 0.00 0.00 0.00 0.00 11.00 31.50 170.50 a 134.00 75.50 0.00 0.00 0.00 422.50
2010 0.00 0.00 0.00 0.00 0.00 13.50 112.50 117.50 33.50 6.50 0.00 0.00 283.50
2011 0.00 0.00 0.00 0.00 0.00 5.50 35.50 105.00 80.50 0.00 0.00 0.00 226.50
2012 0.00 0.00 0.00 0.00 8.50 8.00 67.50 163.00 52.00 0.00 0.00 0.00 299.00
2013 0.00 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
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.39 12.47 38.33 117.93 113.85 50.98 2.85 0.00 0.00 336.73
S.D. 0.00 0.00 0.00 1.33 11.91 29.95 54.19 51.41 30.19 5.56 0.00 0.00 107.55
SKEW 0.00 0.00 0.00 4.53 1.21 0.91 0.13 0.50 0.09 2.43 0.00 0.00 0.38
MAX 0.00 0.00 0.00 8.00 51.50 123.00 244.00 256.50 104.50 24.50 0.00 0.00 598.00
MIN 0.00 0.00 0.00 0.00 0.00 2.00 10.00 21.50 0.50 0.00 0.00 0.00 77.50
NO YRS 73 75 74 74 73 72 75 74 75 75 75 76 68