COULEE DAM 1 SW, WASHINGTON

Monthly Total Cooling Degree Days

(451767)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1934 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 304.50 h 81.50 8.78 a 0.00 b 0.00 o 90.28
1935 0.00 d 0.00 0.00 l 0.00 z 0.00 z 72.50 j 323.84 c 290.50 155.69 a 8.50 0.00 a 0.00 a 778.53
1936 0.00 0.00 b 0.00 b 12.86 b 104.88 a 136.61 b 342.50 188.00 l 78.33 c 1.50 0.00 0.00 676.68
1937 0.00 a 0.00 0.00 0.00 30.00 112.50 384.92 a 199.84 c 132.41 a 0.00 b 0.00 e 0.00 m 859.67
1938 0.00 a 0.00 a 0.00 a 0.00 a 47.53 a 229.50 460.72 b 240.54 d 201.21 a 3.62 a 0.00 a 0.00 d 1183.12
1939 0.00 0.00 0.00 a 2.14 b 45.00 79.66 a 360.12 a 383.88 a 109.82 b 1.03 a 0.00 a 0.00 981.65
1940 0.00 0.00 0.00 a 0.00 63.00 203.00 327.50 303.28 a 157.00 5.00 0.00 0.00 1058.78
1941 0.00 a 0.00 0.00 3.50 21.50 85.50 363.50 227.00 2.50 0.00 a 0.00 a 0.00 703.50
1942 0.00 0.00 0.00 0.00 1.50 13.50 120.38 a 304.32 a 82.76 a 2.00 0.00 a 0.00 524.46
1943 0.00 0.00 z 0.00 0.00 6.00 32.00 256.50 156.50 78.00 13.50 0.00 0.00 542.50
1944 0.00 0.00 0.00 0.00 31.00 115.50 306.00 197.50 95.50 0.00 0.00 0.00 745.50
1945 0.00 0.00 0.00 0.00 14.50 78.50 301.00 281.50 38.00 0.00 a 0.00 0.00 a 713.50
1946 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
1947 0.00 0.00 0.00 1.50 47.00 39.50 203.50 136.00 38.50 4.00 0.00 0.00 470.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 108.00 103.00 79.05 a 46.50 0.00 0.00 0.00 336.55
1949 0.00 0.00 0.00 0.00 a 59.00 69.50 192.50 181.50 76.03 a 0.00 0.00 0.00 578.53
1950 0.00 0.00 0.00 0.00 f 0.50 47.00 238.00 0.00 z 227.50 0.00 0.00 0.00 513.00
1951 0.00 0.00 0.00 0.00 3.50 49.00 217.50 221.65 a 38.00 0.00 0.00 0.00 529.65
1952 0.00 0.00 0.00 2.50 6.50 66.00 250.50 225.27 a 95.50 1.00 0.00 0.00 647.27
1953 0.00 0.00 0.00 0.00 1.50 5.50 182.00 176.00 71.00 0.00 0.00 0.00 436.00
1954 0.00 0.00 0.00 0.00 11.00 19.00 146.00 91.50 20.00 0.00 0.00 0.00 287.50
1955 0.00 0.00 0.00 0.00 0.00 85.50 158.50 174.50 98.50 0.00 0.00 0.00 517.00
1956 0.00 0.00 0.00 0.00 46.50 20.00 286.50 192.50 45.50 0.00 0.00 0.00 a 591.00
1957 0.00 0.00 0.00 3.00 18.00 67.00 151.00 82.50 83.50 0.00 0.00 0.00 a 405.00
1958 0.00 0.00 0.00 0.00 93.00 170.00 339.50 341.50 44.50 0.00 0.00 0.00 988.50
1959 0.00 0.00 0.00 0.00 5.00 53.00 258.50 98.50 20.00 0.00 0.00 0.00 435.00
1960 0.00 0.00 0.00 0.00 1.50 56.00 359.00 150.00 33.50 0.00 0.00 0.00 600.00
1961 0.00 0.00 0.00 0.00 8.50 173.00 306.50 350.00 14.00 0.00 0.00 0.00 852.00
1962 0.00 0.00 0.00 0.00 0.00 67.50 238.00 119.00 64.50 0.00 0.00 0.00 489.00
1963 0.00 0.00 0.00 0.00 25.00 82.00 151.50 229.50 137.00 2.00 0.00 0.00 627.00
1964 0.00 0.00 0.00 0.00 12.00 47.00 214.00 110.50 7.50 0.00 0.00 0.00 391.00
1965 0.00 0.00 0.00 0.00 4.50 57.00 249.00 226.50 2.50 0.50 0.00 0.00 540.00
1966 0.00 0.00 0.00 0.00 26.00 33.00 175.50 214.00 72.50 0.00 0.00 0.00 521.00
1967 0.00 0.00 0.00 0.00 4.50 114.00 262.50 371.50 142.50 0.00 0.00 0.00 895.00
1968 0.00 0.00 0.00 0.00 12.00 88.50 336.00 143.50 58.00 0.00 0.00 0.00 638.00
1969 0.00 0.00 0.00 0.00 24.50 207.50 206.00 197.50 75.00 0.00 a 0.00 0.00 710.50
1970 0.00 0.00 0.00 0.00 16.50 206.50 295.00 238.50 13.00 0.00 0.00 0.00 769.50
1971 0.00 0.00 0.00 0.00 19.00 27.00 281.00 386.50 10.50 0.00 0.00 0.00 724.00
1972 0.00 0.00 0.00 0.00 38.50 73.50 183.50 279.00 28.00 0.00 0.00 0.00 602.50
1973 0.00 0.00 0.00 0.00 48.00 98.50 281.00 238.50 65.00 0.00 0.00 0.00 731.00
1974 0.00 0.00 0.00 0.00 1.50 171.00 187.50 234.00 90.50 0.00 0.00 0.00 c 684.50
1975 0.00 0.00 0.00 0.00 6.50 34.50 347.50 117.00 49.00 4.50 0.00 0.00 559.00
1976 0.00 0.00 0.00 0.00 0.00 43.50 168.00 100.50 69.00 1.00 0.00 0.00 382.00
1977 0.00 0.00 0.00 16.00 2.00 152.59 a 202.00 351.00 15.00 0.00 0.00 0.00 738.59
1978 0.00 0.00 0.00 0.00 0.53 b 121.03 a 236.63 a 191.00 22.50 b 0.00 0.00 0.00 h 571.70
1979 0.00 0.00 0.00 0.00 22.00 150.00 339.00 273.50 76.50 2.77 c 0.00 0.00 a 863.77
1980 0.00 0.00 a 0.00 1.50 3.74 b 22.00 241.50 133.00 35.50 6.20 a 0.00 0.00 b 443.44
1981 0.00 0.00 0.00 2.59 a 4.50 20.00 182.50 331.00 77.00 0.00 0.00 0.00 617.59
1982 0.00 0.00 0.00 0.00 0.50 178.00 201.00 218.50 62.00 0.00 0.00 0.00 660.00
1983 0.00 0.00 0.00 0.00 71.50 37.00 i 115.50 248.00 29.50 0.00 0.00 0.00 464.50
1984 0.00 0.00 0.00 0.00 10.50 51.50 236.50 249.00 44.00 2.50 0.00 0.00 594.00
1985 0.00 0.00 0.00 0.00 48.50 109.00 495.50 185.50 17.50 0.00 0.00 0.00 856.00
1986 0.00 0.00 0.00 0.00 85.00 216.00 163.50 367.00 13.00 0.00 0.00 0.00 844.50
1987 0.00 0.00 0.00 15.50 51.00 175.00 0.00 z 0.00 z 148.45 a 3.50 0.00 0.00 393.45
1988 0.00 0.00 0.00 0.50 16.00 108.50 269.50 260.50 105.52 a 13.50 0.00 0.00 774.02
1989 0.00 0.00 0.00 0.00 2.00 128.00 251.00 161.50 42.00 0.00 0.00 0.00 584.50
1990 0.00 0.00 0.00 0.00 3.00 77.50 338.00 275.00 127.00 0.00 0.00 0.00 820.50
1991 0.00 0.00 0.00 0.00 0.00 19.50 250.00 290.50 94.50 3.50 0.00 0.00 658.00
1992 0.00 0.00 0.00 0.00 56.00 240.00 204.00 281.50 43.50 6.50 0.00 0.00 831.50
1993 0.00 0.00 0.00 0.00 0.00 z 60.00 49.00 142.00 86.50 0.00 0.00 0.00 337.50
1994 0.00 0.00 0.00 0.00 35.00 72.50 380.00 264.00 102.50 0.00 0.00 0.00 854.00
1995 0.00 0.00 0.00 0.00 29.50 76.50 248.50 111.50 101.00 0.00 0.00 0.00 567.00
1996 0.00 0.00 a 0.00 0.00 0.00 44.00 326.00 249.50 22.00 0.00 0.00 0.00 641.50
1997 0.00 0.00 0.00 0.00 20.50 40.00 186.50 286.50 51.50 0.00 0.00 0.00 585.00
1998 0.00 z 0.00 0.00 1.00 19.50 0.00 z 397.50 331.00 151.00 1.00 0.00 0.00 901.00
1999 0.00 0.00 0.00 a 0.00 17.00 58.50 183.50 301.22 a 44.00 0.00 0.00 0.00 604.22
2000 0.00 0.00 b 0.00 0.00 3.50 0.00 z 208.22 a 215.50 38.28 a 0.00 a 0.00 a 0.00 b 465.49
2001 0.00 0.00 0.00 0.00 51.50 24.83 a 209.50 235.08 a 67.50 0.00 a 0.00 0.00 588.41
2002 0.00 0.00 0.00 0.00 0.50 107.50 291.50 140.00 35.00 0.00 0.00 0.00 574.50
2003 0.00 0.00 0.00 0.00 26.50 156.00 379.00 246.00 133.50 11.00 0.00 0.00 z 952.00
2004 0.00 z 0.00 z 0.00 z 0.00 d 2.00 163.50 357.00 318.50 20.00 1.00 0.00 0.00 862.00
2005 0.00 0.00 0.00 2.50 32.50 86.00 0.00 z 296.50 28.50 0.00 0.00 z 0.00 446.00
2006 0.00 0.00 0.00 0.00 35.00 78.50 351.50 220.50 94.50 0.00 0.00 0.00 780.00
2007 0.00 0.00 0.00 0.00 7.50 0.00 z 382.50 223.00 68.00 0.00 0.00 0.00 681.00
2008 0.00 0.00 0.00 0.00 34.00 70.00 269.00 232.50 44.50 8.00 0.00 0.00 658.00
2009 0.00 0.00 0.00 0.00 33.00 104.50 319.50 265.50 112.50 0.00 0.00 0.00 835.00
2010 0.00 0.00 0.00 0.00 4.00 38.00 246.50 189.00 17.50 3.00 0.00 0.00 498.00
2011 0.00 0.00 0.00 0.00 0.00 25.00 111.50 249.00 116.38 a 0.00 0.00 0.00 501.88
2012 0.00 0.00 0.00 4.00 12.00 33.00 284.00 290.00 47.07 a 0.00 a 0.00 0.00 670.07
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 0.93 22.23 89.89 258.96 228.58 69.04 1.53 0.00 0.00 658.29
S.D. 0.00 0.00 0.00 3.02 23.89 59.23 86.90 77.29 47.08 3.09 0.00 0.00 174.30
SKEW 0.00 0.00 0.00 4.14 1.37 0.80 0.17 -0.01 0.94 2.41 0.00 0.00 0.56
MAX 0.00 0.00 0.00 16.00 104.88 240.00 495.50 386.50 227.50 13.50 0.00 0.00 1183.12
MIN 0.00 0.00 0.00 0.00 0.00 5.50 49.00 79.05 2.50 0.00 0.00 0.00 287.50
NO YRS 75 75 75 74 74 72 75 74 78 78 77 74 61