HEADWORKS PORTLAND W, OREGON

Monthly Total Cooling Degree Days

(353770)

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
1899 0.00 z 0.00 z 0.00 z 0.00 d 0.00 0.00 74.00 2.00 8.50 0.00 0.00 0.00 84.50
1900 0.00 0.00 0.00 0.00 0.00 20.00 46.50 0.00 0.00 0.00 0.00 0.00 a 66.50
1901 0.00 0.00 a 0.00 g 0.00 0.00 a 4.00 5.00 31.50 0.00 z 0.00 0.00 0.00 40.50
1902 0.00 0.00 0.00 b 0.00 z 0.00 z 8.50 45.00 49.50 2.50 0.00 0.00 0.00 a 105.50
1903 0.00 0.00 0.00 z 0.00 z 0.00 z 21.50 30.50 14.00 0.00 0.00 z 0.00 z 0.00 66.00
1904 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 0.00
1905 0.00 z 0.00 z 0.00 z 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
1906 0.00 z 0.00 z 0.00 z 0.00 z 2.00 9.00 188.50 75.50 7.00 0.50 0.00 0.00 282.50
1907 0.00 0.00 g 0.00 0.00 5.00 23.00 56.50 16.00 24.50 0.00 0.00 0.00 125.00
1908 0.00 0.00 0.00 0.00 0.00 14.00 108.00 67.50 9.00 0.00 0.00 0.00 198.50
1909 0.00 0.00 0.00 0.00 1.50 4.00 0.00 7.50 19.00 0.00 0.00 0.00 32.00
1910 0.00 0.00 0.00 1.50 1.00 16.55 a 57.00 88.00 11.50 0.00 0.00 0.00 175.55
1911 0.00 0.00 0.00 1.50 14.00 12.50 159.00 22.50 1.00 0.00 0.00 0.00 210.50
1912 0.00 0.00 0.00 0.00 3.00 31.50 68.00 1.00 25.50 0.00 d 0.00 0.00 129.00
1913 0.00 0.00 0.00 0.00 b 0.00 z 9.50 56.50 64.50 11.50 0.00 0.00 0.00 142.00
1914 0.00 0.00 0.00 0.00 3.00 11.50 44.50 77.50 1.50 0.00 0.00 0.00 138.00
1915 0.00 0.00 0.00 0.00 a 0.00 16.07 b 48.00 95.50 4.00 0.00 0.00 0.00 163.57
1916 0.00 0.00 0.00 0.00 0.00 0.00 a 6.00 63.03 a 1.50 0.00 0.00 0.00 70.53
1917 0.00 c 0.00 0.00 0.00 0.00 7.00 81.50 0.00 z 7.00 0.00 0.00 0.00 95.50
1918 0.00 0.00 0.00 0.00 0.00 54.50 31.50 45.50 45.00 0.00 0.00 0.00 176.50
1919 0.00 0.00 0.00 0.00 1.50 0.00 97.50 85.00 5.00 0.00 0.00 0.00 189.00
1920 0.00 0.00 0.00 0.00 0.00 15.50 50.00 103.50 2.00 0.00 z 0.00 0.00 171.00
1921 0.00 0.00 0.00 0.00 0.00 141.50 20.00 38.00 0.00 0.00 0.00 0.00 a 199.50
1922 0.00 0.00 0.00 0.00 18.00 20.00 112.00 46.00 28.50 0.00 0.00 0.00 224.50
1923 0.00 0.00 0.00 0.00 1.00 27.00 64.50 99.00 40.50 4.50 0.00 0.00 236.50
1924 0.00 0.00 0.00 0.00 15.50 33.50 60.00 38.23 a 35.50 0.00 0.00 0.00 182.73
1925 0.00 0.00 0.00 0.00 7.00 51.00 97.50 59.50 9.50 0.00 0.00 0.00 224.50
1926 0.00 0.00 0.00 14.00 3.50 47.50 99.50 83.00 9.50 0.00 0.00 0.00 257.00
1927 0.00 0.00 0.00 0.00 0.00 31.00 68.00 90.00 0.00 0.00 0.00 0.00 189.00
1928 0.00 0.00 c 0.00 0.00 9.50 2.50 77.50 13.90 b 26.00 2.00 0.00 0.00 131.40
1929 0.00 0.00 0.00 0.00 4.50 15.00 67.00 68.20 a 25.00 0.00 0.00 0.00 179.70
1930 0.00 0.00 0.00 0.00 0.00 9.00 36.00 78.50 24.00 0.00 0.00 0.00 147.50
1931 0.00 0.00 0.00 1.50 18.50 10.50 60.97 a 57.50 19.50 0.00 0.00 0.00 168.47
1932 0.00 0.00 0.00 0.00 0.00 56.00 11.50 50.50 27.00 8.00 0.00 0.00 153.00
1933 0.00 0.00 0.00 0.00 0.00 6.00 52.00 85.00 0.00 1.00 0.00 0.00 144.00
1934 0.00 0.00 0.00 1.50 3.00 10.00 10.00 70.00 23.00 6.95 b 0.00 0.00 124.45
1935 0.00 a 0.00 0.00 0.00 0.00 19.50 94.00 60.50 45.00 0.00 0.00 0.00 219.00
1936 0.00 0.00 0.00 0.50 20.15 a 16.50 21.50 39.50 11.00 4.00 0.00 0.00 113.15
1937 0.00 0.00 0.00 0.00 0.00 33.00 58.00 39.00 25.50 0.00 0.00 0.00 155.50
1938 0.00 0.00 0.00 0.00 9.00 20.50 136.50 4.00 31.50 1.50 0.00 a 0.00 203.00
1939 0.00 0.00 0.00 0.00 11.50 0.00 80.00 75.00 19.00 0.00 0.00 0.00 185.50
1940 0.00 a 0.00 0.00 0.00 8.50 43.00 28.50 78.00 15.50 4.50 0.00 0.00 178.00
1941 0.00 0.00 0.00 0.00 15.50 13.00 162.00 76.50 1.50 0.00 0.00 0.00 268.50
1942 0.00 0.00 0.00 0.00 11.50 18.50 102.00 101.00 19.00 0.00 0.00 0.00 252.00
1943 0.00 0.00 0.00 0.00 0.00 8.00 53.22 a 13.00 39.50 2.50 0.00 0.00 116.22
1944 0.00 0.00 0.00 0.00 6.50 7.00 61.50 57.00 60.00 0.00 0.00 0.00 192.00
1945 0.00 0.00 0.00 0.00 4.00 27.50 84.00 42.50 4.50 0.00 0.00 0.00 162.50
1946 0.00 0.00 0.00 0.00 3.50 8.50 74.50 48.00 2.00 0.00 0.00 0.00 136.50
1947 0.00 0.00 0.00 0.00 20.00 1.03 a 10.50 7.00 16.03 a 0.00 0.00 0.00 54.57
1948 0.00 0.00 0.00 0.00 0.00 49.50 20.00 5.00 18.10 a 0.00 0.00 0.00 92.60
1949 0.00 a 0.00 0.00 b 0.00 2.50 5.69 a 33.07 a 26.35 a 23.79 a 0.00 a 0.00 0.00 a 91.40
1950 0.00 0.00 0.00 0.00 0.00 10.50 45.47 a 81.00 17.50 0.00 0.00 0.00 154.47
1951 0.00 b 0.00 0.00 b 0.00 0.00 a 29.00 32.03 a 33.14 b 26.50 0.00 a 0.00 a 0.00 a 120.67
1952 0.00 a 0.00 b 0.00 0.00 a 1.00 3.00 80.00 76.50 54.83 a 11.00 0.00 0.00 a 226.33
1953 0.00 a 0.00 0.00 a 0.00 3.00 0.00 38.50 39.00 22.50 0.00 0.00 0.00 103.00
1954 0.00 a 0.00 0.00 0.00 2.07 a 0.00 9.62 b 1.55 a 10.50 0.00 c 0.00 a 0.00 a 23.74
1955 0.00 0.00 0.00 0.00 a 0.00 a 21.50 21.04 c 27.90 a 31.03 a 0.00 b 0.00 a 0.00 a 101.47
1956 0.00 a 0.00 0.00 0.00 a 16.02 a 0.00 a 86.28 a 32.50 1.00 0.00 0.00 0.00 135.80
1957 0.00 0.00 0.00 2.50 1.00 1.50 4.50 2.58 a 31.50 0.00 a 0.00 0.00 43.58
1958 0.00 0.00 0.00 0.00 26.00 79.00 163.50 118.50 35.50 1.50 0.00 0.00 424.00
1959 0.00 0.00 0.00 0.00 0.00 13.00 98.00 22.50 2.00 2.00 0.00 0.00 137.50
1960 0.00 0.00 0.00 0.00 0.00 8.50 100.50 42.50 32.00 3.50 0.00 0.00 187.00
1961 0.00 0.00 0.00 0.00 6.50 87.00 107.00 129.50 4.50 9.50 0.00 0.00 344.00
1962 0.00 0.00 0.00 0.00 0.00 4.50 60.00 23.50 13.00 1.00 0.00 a 0.00 102.00
1963 0.00 0.00 0.00 0.00 12.50 22.00 7.50 36.00 57.00 2.00 0.00 0.00 137.00
1964 0.00 0.00 0.00 0.00 0.00 0.00 41.50 38.00 3.00 6.50 0.00 0.00 89.00
1965 0.00 0.00 0.00 0.00 0.00 13.50 109.00 72.50 4.00 2.50 0.00 0.00 a 201.50
1966 0.00 0.00 0.00 0.00 0.50 13.50 22.00 65.00 23.50 2.50 0.00 0.00 127.00
1967 0.00 0.00 0.00 0.00 3.00 36.50 63.00 209.50 65.00 0.00 0.00 0.00 377.00
1968 0.00 0.00 0.00 0.00 0.00 15.00 79.50 43.00 25.00 0.00 0.00 0.00 162.50
1969 0.00 0.00 0.00 0.00 7.00 17.50 28.50 10.00 23.00 0.00 0.00 0.00 86.00
1970 0.00 0.00 0.00 0.00 2.00 71.00 63.50 66.50 10.00 2.50 0.00 0.00 215.50
1971 0.00 0.00 0.00 0.00 5.00 3.00 85.50 82.50 1.50 4.50 0.00 0.00 182.00
1972 0.00 0.00 0.00 0.00 7.50 4.00 78.00 102.00 23.50 0.00 0.00 0.00 215.00
1973 0.00 0.00 0.00 0.00 19.00 25.50 99.50 26.50 35.00 0.00 0.00 0.00 205.50
1974 0.00 0.00 0.00 0.00 0.00 16.50 43.00 69.00 78.00 1.50 0.00 0.00 208.00
1975 0.00 0.00 0.00 0.00 3.00 15.50 58.50 10.50 64.50 5.50 0.00 0.00 157.50
1976 0.00 0.00 0.00 0.00 0.50 11.50 29.00 11.88 a 22.50 4.50 0.00 0.00 79.88
1977 0.00 0.00 0.00 0.00 0.00 17.00 41.00 172.00 3.00 0.00 a 0.00 0.00 233.00
1978 0.00 c 0.00 0.00 0.00 1.00 33.00 84.50 62.00 8.00 5.00 0.00 0.00 193.50
1979 0.00 0.00 0.00 0.00 2.00 14.00 79.50 17.50 54.50 0.00 0.00 0.00 167.50
1980 0.00 0.00 0.00 0.00 0.00 0.00 67.00 30.50 21.00 38.50 0.00 0.00 a 157.00
1981 0.00 a 0.00 0.00 6.00 1.50 3.50 52.00 146.50 56.50 0.00 0.00 0.00 266.00
1982 0.00 0.00 0.00 0.00 2.00 48.00 38.50 72.50 23.50 0.00 0.00 0.00 184.50
1983 0.00 0.00 0.00 0.00 41.50 5.00 26.50 30.50 6.50 0.00 0.00 0.00 110.00
1984 0.00 0.00 0.00 0.00 7.50 23.00 90.50 64.50 14.00 2.50 0.00 0.00 202.00
1985 0.00 0.00 0.00 0.00 0.00 30.00 151.00 72.50 0.00 0.00 0.00 0.00 a 253.50
1986 0.00 0.00 0.00 0.00 27.00 55.00 15.50 142.50 27.50 0.00 0.00 0.00 267.50
1987 0.00 0.00 0.00 3.50 33.50 57.00 47.50 137.00 0.00 z 21.00 0.00 0.00 299.50
1988 0.00 0.00 0.00 0.00 8.50 23.00 82.50 84.50 64.00 19.00 0.00 0.00 281.50
1989 0.00 0.00 0.00 0.00 3.00 42.50 22.50 33.00 50.00 0.00 0.00 0.00 151.00
1990 0.00 0.00 0.00 3.50 4.50 23.00 149.50 139.50 56.00 0.00 0.00 0.00 376.00
1991 0.00 0.00 0.00 0.00 0.00 2.50 128.50 122.50 78.00 16.50 0.00 0.00 348.00
1992 0.00 0.00 0.00 0.00 52.50 82.50 127.50 130.00 38.00 0.00 0.00 0.00 430.50
1993 0.00 0.00 0.00 0.00 20.00 10.00 9.00 97.00 67.50 11.50 0.00 0.00 215.00
1994 0.00 0.00 0.00 0.00 9.00 2.50 147.50 91.00 67.00 0.00 0.00 0.00 317.00
1995 0.00 0.00 0.00 0.00 11.00 31.50 120.50 51.00 43.50 0.00 0.00 0.00 257.50
1996 0.00 0.00 0.00 0.00 0.00 17.50 192.50 167.50 18.50 20.50 0.00 0.00 416.50
1997 0.00 0.00 0.00 0.00 13.00 0.00 z 68.00 121.00 56.00 0.00 0.00 0.00 258.00
1998 0.00 0.00 0.00 8.00 3.50 16.50 142.00 122.50 47.00 0.00 0.00 0.00 339.50
1999 0.00 0.00 0.00 0.00 2.50 16.50 69.50 104.00 64.50 1.50 0.00 0.00 258.50
2000 0.00 0.00 0.00 0.00 0.00 35.00 52.50 49.00 25.00 1.00 0.00 0.00 162.50
2001 0.00 0.00 0.00 0.00 22.50 8.50 22.50 59.00 19.00 2.00 0.00 0.00 133.50
2002 0.00 0.00 0.00 0.00 0.00 30.00 89.50 68.00 22.50 0.00 0.00 0.00 210.00
2003 0.00 0.00 0.00 0.00 10.00 68.00 106.00 84.00 61.00 3.50 0.00 0.00 332.50
2004 0.00 0.00 0.00 3.00 0.00 23.00 125.00 90.50 5.50 0.00 0.00 0.00 247.00
2005 0.00 0.00 0.00 0.00 26.00 0.00 73.50 78.50 1.50 0.00 0.00 0.00 179.50
2006 0.00 0.00 0.00 0.00 16.50 50.50 111.00 67.00 32.50 0.00 0.00 0.00 277.50
2007 0.00 0.00 0.00 0.00 4.00 f 7.50 g 60.00 h 47.00 9.00 0.00 0.00 0.00 m 56.00
2008 0.00 0.00 0.00 0.00 11.00 29.50 51.15 a 89.00 26.00 0.00 0.00 0.00 206.65
2009 0.00 0.00 0.00 0.00 8.50 10.50 156.00 73.00 39.50 0.00 0.00 0.00 287.50
2010 0.00 0.00 0.00 0.00 0.00 0.00 57.50 67.50 17.50 0.00 0.00 0.00 142.50
2011 0.00 0.00 0.00 0.00 0.00 0.00 5.50 49.50 57.50 0.00 0.00 b 0.00 112.50
2012 0.00 0.00 0.00 0.00 7.00 1.00 21.00 97.00 43.45 a 0.00 0.00 0.00 169.45
2013 0.00 0.00 0.00 a 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 0.43 6.34 21.29 68.36 63.63 24.80 2.17 0.00 0.00 189.66
S.D. 0.00 0.00 0.00 1.73 9.31 22.56 43.79 41.00 20.62 5.41 0.00 0.00 84.06
SKEW 0.00 0.00 0.00 5.71 2.28 2.19 0.68 0.74 0.76 4.08 0.00 0.00 0.75
MAX 0.00 0.00 0.00 14.00 52.50 141.50 192.50 209.50 78.00 38.50 0.00 0.00 430.50
MIN 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23.74
NO YRS 111 110 109 110 108 110 111 111 110 110 111 112 100