PORTLAND INTL AP, OREGON

Monthly Total Cooling Degree Days

(356751)

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
1941 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 0.00 0.00
1942 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 0.00 0.00
1943 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 0.00 0.00
1944 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 0.00 0.00
1945 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 0.00 0.00
1946 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 0.00 0.00
1947 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 0.00 0.00
1948 0.00 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 46.50 0.00 a 0.00 0.00 46.50
1949 0.00 0.00 0.00 0.00 9.00 15.00 73.00 74.50 44.00 0.00 0.00 0.00 215.50
1950 0.00 0.00 0.00 0.00 0.00 24.50 80.50 135.50 30.50 0.00 0.00 0.00 271.00
1951 0.00 0.00 0.00 0.00 3.50 52.50 85.50 66.50 36.00 0.00 0.00 0.00 244.00
1952 0.00 0.00 0.00 0.00 4.50 7.50 111.00 105.50 63.50 7.00 0.00 0.00 299.00
1953 0.00 0.00 0.00 0.00 5.50 2.00 72.50 60.50 20.00 0.00 0.00 0.00 160.50
1954 0.00 0.00 0.00 0.00 1.00 0.50 9.50 11.50 3.50 0.00 0.00 0.00 26.00
1955 0.00 0.00 0.00 0.00 1.50 29.00 34.00 52.50 38.50 0.00 0.00 0.00 155.50
1956 0.00 0.00 0.00 0.00 22.00 2.50 120.50 62.00 2.00 0.00 0.00 0.00 209.00
1957 0.00 a 0.00 0.00 5.50 5.50 12.00 46.00 21.50 56.00 0.00 0.00 0.00 146.50
1958 0.00 0.00 0.00 0.00 33.00 74.50 176.00 169.50 29.00 0.00 0.00 0.00 482.00
1959 0.00 0.00 0.00 0.00 0.50 26.50 140.50 48.50 8.00 0.00 0.00 0.00 224.00
1960 0.00 0.00 0.00 0.00 0.00 23.50 146.50 69.00 15.50 0.00 0.00 0.00 254.50
1961 0.00 0.00 b 0.00 0.00 6.00 77.50 146.00 168.50 10.00 3.50 0.00 0.00 411.50
1962 0.00 0.00 0.00 0.00 0.00 22.00 96.00 55.50 25.50 0.00 0.00 0.00 199.00
1963 0.00 0.00 0.00 0.00 16.50 21.50 16.00 62.00 49.00 0.00 0.00 0.00 165.00
1964 0.00 0.00 0.00 0.00 1.50 0.50 54.50 46.00 0.00 0.00 0.00 0.00 102.50
1965 0.00 0.00 0.00 0.00 0.00 22.00 169.00 126.00 7.00 0.00 0.00 0.00 324.00
1966 0.00 0.00 0.00 0.00 6.00 27.00 72.00 95.50 42.00 0.00 0.00 0.00 242.50
1967 0.00 0.00 0.00 0.00 4.50 80.50 136.50 245.50 73.50 0.00 0.00 0.00 540.50
1968 0.00 0.00 0.00 0.00 0.50 30.50 132.00 69.50 24.50 0.00 0.00 0.00 257.00
1969 0.00 0.00 0.00 0.00 11.50 98.50 69.00 58.50 41.50 0.00 0.00 0.00 279.00
1970 0.00 0.00 0.00 0.00 6.50 101.50 143.50 114.00 6.50 2.00 0.00 0.00 374.00
1971 0.00 0.00 0.00 0.00 5.00 13.00 163.50 210.00 5.50 2.50 0.00 0.00 399.50
1972 0.00 0.00 0.00 0.00 26.00 36.00 192.00 214.50 41.00 0.00 0.00 0.00 509.50
1973 0.00 0.00 0.00 0.00 32.50 61.50 170.50 79.50 43.50 0.00 0.00 0.00 387.50
1974 0.00 0.00 0.00 0.00 0.50 56.50 99.00 137.50 98.50 0.00 0.00 0.00 392.00
1975 0.00 0.00 0.00 0.00 11.00 37.00 149.00 53.00 71.50 2.00 0.00 0.00 323.50
1976 0.00 0.00 0.00 0.00 3.00 21.50 83.50 61.00 27.50 4.00 0.00 0.00 200.50
1977 0.00 0.00 0.00 0.00 0.00 39.00 83.00 228.00 9.00 0.00 0.00 0.00 359.00
1978 0.00 0.00 0.00 0.00 3.00 64.00 134.50 109.00 16.50 0.00 0.00 0.00 327.00
1979 0.00 0.00 0.00 0.00 15.00 62.50 178.00 116.50 60.00 5.00 0.00 0.00 437.00
1980 0.00 0.00 0.00 0.50 0.00 1.00 136.50 70.50 31.50 11.50 0.00 0.00 251.50
1981 0.00 0.00 0.00 2.50 3.00 15.00 101.50 227.00 77.00 0.00 0.00 0.00 426.00
1982 0.00 0.00 0.00 0.00 4.00 103.00 99.00 122.50 47.50 0.00 0.00 0.00 376.00
1983 0.00 0.00 0.00 0.00 46.50 21.50 76.00 129.00 9.50 0.00 0.00 0.00 282.50
1984 0.00 0.00 0.00 0.00 10.00 32.00 135.00 138.00 44.50 6.00 0.00 0.00 365.50
1985 0.00 0.00 0.00 0.00 9.50 48.50 283.00 138.50 3.00 0.00 0.00 0.00 482.50
1986 0.00 0.00 0.00 0.00 38.50 85.50 48.50 226.00 48.00 0.00 0.00 0.00 446.50
1987 0.00 0.00 0.00 3.50 36.00 98.50 91.00 174.00 71.50 11.00 0.00 0.00 485.50
1988 0.00 0.00 0.00 0.00 9.50 36.00 140.50 108.50 63.00 7.50 0.00 0.00 365.00
1989 0.00 0.00 0.00 0.00 8.50 58.50 49.50 61.50 55.50 0.00 0.00 0.00 233.50
1990 0.00 0.00 0.00 2.00 3.00 41.00 201.50 187.00 77.00 0.00 0.00 0.00 511.50
1991 0.00 0.00 0.00 0.00 0.00 7.00 155.00 171.50 98.50 1.50 0.00 0.00 433.50
1992 0.00 0.00 0.00 0.50 53.50 108.50 166.50 158.50 28.50 0.00 0.00 0.00 516.00
1993 0.00 0.00 0.00 0.00 19.50 22.50 20.00 126.00 77.50 2.50 0.00 0.00 268.00
1994 0.00 0.00 0.00 0.00 14.00 28.50 203.50 160.00 103.00 0.00 0.00 0.00 509.00
1995 0.00 0.00 0.00 0.00 21.50 60.00 176.50 87.00 86.00 0.00 0.00 0.00 431.00
1996 0.00 0.00 0.00 0.00 0.50 34.50 234.00 175.50 22.00 6.50 0.00 0.00 473.00
1997 0.00 0.00 0.00 0.00 34.00 15.00 128.50 202.00 71.00 0.00 0.00 0.00 450.50
1998 0.00 0.00 0.00 13.50 4.00 27.00 198.50 190.00 91.50 0.00 0.00 0.00 524.50
1999 0.00 0.00 0.00 0.00 8.00 38.50 106.00 142.00 64.00 0.00 0.00 0.00 358.50
2000 0.00 0.00 0.00 0.00 2.00 77.07 a 108.00 100.50 46.00 0.00 a 0.00 0.00 333.57
2001 0.00 0.00 0.00 0.50 16.03 b 25.50 71.50 137.50 55.34 a 0.00 0.00 0.00 306.38
2002 0.00 0.00 0.00 0.00 1.00 65.50 158.50 143.50 53.50 0.00 0.00 0.00 422.00
2003 0.00 0.00 0.00 a 0.00 14.00 105.00 205.50 157.50 95.00 14.00 0.00 0.00 591.00
2004 0.00 0.00 0.00 5.50 6.00 78.00 204.00 204.00 12.00 2.50 0.00 0.00 512.00
2005 0.00 0.00 0.00 0.00 25.00 20.50 168.50 181.00 23.50 0.00 0.00 0.00 418.50
2006 0.00 0.00 0.00 0.50 29.50 79.50 191.50 142.00 70.00 0.00 0.50 0.00 513.50
2007 0.00 0.00 0.00 0.00 21.50 32.00 177.00 109.00 44.00 0.00 0.00 0.00 383.50
2008 0.00 0.00 0.00 0.00 38.50 56.00 126.00 161.50 69.00 0.00 0.00 0.00 451.00
2009 0.00 0.00 0.00 0.00 32.50 51.50 273.50 164.50 81.50 0.00 0.00 0.00 603.50
2010 0.00 0.00 0.00 0.00 0.00 15.50 117.50 126.00 42.00 0.00 0.00 0.00 301.00
2011 0.00 0.00 0.00 0.00 0.00 14.50 67.50 153.50 111.00 0.00 0.00 0.00 346.50
2012 0.00 0.00 0.00 4.00 10.50 21.50 108.00 192.50 75.00 0.50 0.00 0.00 412.00
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 0.60 11.80 41.67 126.73 126.48 46.05 1.38 0.01 0.00 354.73
S.D. 0.00 0.00 0.00 2.03 13.26 29.98 59.34 57.14 29.16 3.04 0.06 0.00 126.38
SKEW 0.00 0.00 0.00 4.69 1.28 0.68 0.26 0.07 0.25 2.54 8.31 0.00 -0.25
MAX 0.00 0.00 0.00 13.50 53.50 108.50 283.00 245.50 111.00 14.00 0.50 0.00 603.50
MIN 0.00 0.00 0.00 0.00 0.00 0.50 9.50 11.50 0.00 0.00 0.00 0.00 26.00
NO YRS 72 72 72 64 64 64 64 64 65 65 72 72 64