SEDRO WOOLLEY, WASHINGTON

Monthly Total Cooling Degree Days

(457507)

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
1896 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 12.52 e 3.50 0.00 0.00 0.00 16.02
1897 0.00 0.00 0.00 1.50 12.50 29.50 12.50 79.00 3.10 a 0.00 0.00 0.00 138.10
1898 0.00 0.00 0.00 0.00 11.00 21.00 58.50 71.00 4.00 0.00 0.00 0.00 165.50
1899 0.00 0.00 0.00 0.00 0.00 0.00 0.00 z 17.50 h 23.00 0.00 g 0.00 0.00 23.00
1900 0.00 0.00 0.00 j 0.00 0.00 f 2.40 e 3.50 3.50 0.00 0.00 0.00 0.00 9.40
1901 0.00 0.00 0.00 0.00 4.50 1.50 0.00 b 68.20 a 11.50 0.00 0.00 0.00 85.70
1902 0.00 z 0.00 0.00 a 0.00 2.00 13.00 23.77 a 1.50 i 0.00 0.00 0.00 0.00 38.77
1903 0.00 0.00 0.00 0.00 2.50 15.00 3.00 3.50 1.00 0.00 0.00 0.00 25.00
1904 0.00 0.00 0.00 0.00 0.00 a 9.00 h 21.00 16.50 0.00 0.00 0.00 0.00 37.50
1905 0.00 0.00 0.00 1.00 0.00 0.00 z 23.00 13.00 0.00 0.00 0.00 0.00 37.00
1906 0.00 0.00 0.00 0.00 0.00 13.50 54.00 9.50 0.50 0.00 0.00 0.00 77.50
1907 0.00 0.00 0.00 0.00 4.13 a 3.33 c 24.00 4.65 a 1.00 0.00 0.00 0.00 z 37.12
1908 0.00 0.00 0.00 2.78 c 0.00 4.50 g 45.50 12.50 2.50 0.00 0.00 0.00 63.28
1909 0.00 0.00 0.00 z 0.00 0.00 6.00 7.50 0.00 5.50 0.50 0.00 0.00 c 19.50
1910 0.00 c 0.00 a 0.00 4.00 6.50 1.00 26.50 11.00 3.50 0.00 0.00 0.00 52.50
1911 0.00 0.00 0.00 0.00 0.00 4.50 48.50 5.50 0.00 a 0.50 0.00 0.00 59.00
1912 0.00 0.00 0.00 0.00 12.50 12.00 18.50 10.00 0.00 0.00 0.00 0.00 53.00
1913 0.00 0.00 0.00 0.00 0.00 0.00 20.00 23.50 2.00 0.00 0.00 0.00 45.50
1914 0.00 0.00 0.00 0.00 2.50 43.45 a 41.33 a 9.50 0.00 0.00 0.00 d 0.00 96.78
1915 0.00 0.00 0.00 0.00 a 0.00 39.50 80.00 0.00 z 0.50 0.00 0.00 0.00 120.00
1916 0.00 0.00 0.00 0.00 0.00 13.50 27.00 32.00 1.50 0.00 0.00 0.00 74.00
1917 0.00 0.00 0.00 0.00 0.00 10.50 49.00 17.50 3.50 2.50 0.00 0.00 83.00
1918 0.00 0.00 0.00 0.00 0.00 6.50 19.00 13.00 7.50 0.00 0.00 0.00 46.00
1919 0.00 0.00 0.00 0.00 0.00 0.00 2.00 4.50 2.50 0.00 0.00 0.00 9.00
1920 0.00 0.00 0.00 0.00 2.50 8.50 34.00 17.50 0.50 0.00 0.00 0.00 63.00
1921 0.00 0.00 0.00 0.00 0.00 4.00 1.50 3.00 0.00 0.00 0.00 0.00 8.50
1922 0.00 0.00 0.00 0.00 13.00 6.00 13.50 4.00 3.00 0.00 0.00 0.00 d 39.50
1923 0.00 0.00 0.00 0.00 0.50 14.50 43.50 37.00 4.50 0.00 0.00 0.00 100.00
1924 0.00 0.00 0.00 0.00 0.50 2.00 18.00 5.50 2.59 a 0.00 c 0.00 0.00 28.59
1925 0.00 0.00 0.00 0.00 2.00 12.00 10.00 6.00 0.00 0.00 0.00 0.00 30.00
1926 0.00 0.00 0.00 0.00 8.00 12.00 21.00 3.50 0.00 0.00 0.00 0.00 44.50
1927 0.00 0.00 0.00 0.00 0.00 3.50 20.00 19.67 e 4.50 1.50 0.00 0.00 49.17
1928 0.00 0.00 0.00 0.00 5.50 5.00 27.50 0.00 1.50 0.00 0.00 0.00 a 39.50
1929 0.00 0.00 0.00 0.00 z 0.00 0.00 6.00 2.50 0.50 3.50 0.00 0.00 12.50
1930 0.00 0.00 0.00 m 0.00 b 0.00 0.00 8.00 7.50 0.00 0.00 a 0.00 n 0.00 15.50
1931 0.00 0.00 0.00 0.00 1.50 3.50 14.50 9.00 0.50 0.00 0.00 0.00 29.00
1932 0.00 0.00 0.00 0.00 0.00 19.66 a 1.50 3.50 0.00 0.00 0.00 0.00 24.66
1933 0.00 0.00 0.00 0.00 0.00 0.00 0.50 21.24 d 0.00 0.00 0.00 0.00 21.74
1934 0.00 0.00 0.00 0.00 3.00 0.00 8.00 20.50 4.50 7.75 c 0.00 c 0.00 43.75
1935 0.00 0.00 0.00 d 0.00 0.00 7.00 22.50 11.50 1.00 0.00 0.00 0.00 42.00
1936 0.00 0.00 0.00 0.00 0.00 5.50 0.00 16.00 0.00 0.00 0.00 0.00 21.50
1937 0.00 0.00 0.00 0.00 0.00 6.00 21.00 8.00 2.50 0.00 0.00 0.00 37.50
1938 0.00 0.00 0.00 0.00 0.50 3.50 25.00 0.00 4.00 0.00 0.00 0.00 33.00
1939 0.00 0.00 0.00 0.00 1.50 0.00 12.50 21.00 0.00 0.00 0.00 0.00 35.00
1940 0.00 0.00 0.00 0.00 0.00 1.00 2.50 6.50 0.50 3.00 0.00 0.00 13.50
1941 0.00 0.00 0.00 0.00 0.00 1.00 77.50 12.50 0.00 0.00 0.00 0.00 91.00
1942 0.00 0.00 0.00 0.00 0.00 7.00 60.50 59.50 0.00 1.00 0.00 0.00 128.00
1943 0.00 d 0.00 b 0.00 0.00 0.00 0.00 5.50 14.00 3.50 0.00 0.00 0.00 23.00
1944 0.00 0.00 0.00 0.00 12.00 30.50 106.50 31.00 8.00 0.00 0.00 0.00 188.00
1945 0.00 0.00 0.00 0.00 0.00 10.00 30.00 23.00 1.00 0.00 0.00 0.00 64.00
1946 0.00 0.00 0.00 0.00 0.00 5.50 20.00 2.50 7.50 0.00 0.00 0.00 35.50
1947 0.00 0.00 0.00 0.00 3.50 2.50 6.00 4.00 1.00 0.00 0.00 0.00 17.00
1948 0.00 0.00 0.00 0.00 0.00 10.50 6.00 10.50 0.00 0.00 0.00 0.00 27.00
1949 0.00 0.00 0.00 0.00 0.00 0.00 3.00 15.00 18.00 0.00 0.00 g 0.00 36.00
1950 0.00 0.00 0.00 0.00 0.00 19.00 12.00 18.50 3.00 0.00 0.00 0.00 52.50
1951 0.00 0.00 0.00 0.00 0.00 13.50 31.50 5.00 7.00 3.00 0.00 0.00 60.00
1952 0.00 0.00 a 0.00 0.00 0.50 0.00 13.00 29.50 5.50 0.00 0.00 0.00 48.50
1953 0.00 0.00 0.00 0.00 11.00 0.00 16.50 9.50 3.00 0.00 0.00 0.00 b 40.00
1954 0.00 0.00 0.00 0.00 0.00 0.00 2.00 3.50 1.00 0.00 0.00 0.00 6.50
1955 0.00 0.00 0.00 0.00 0.00 11.00 1.50 3.50 2.00 0.00 0.00 0.00 18.00
1956 0.00 0.00 0.00 0.00 9.00 0.50 34.00 13.50 0.50 0.00 0.00 0.00 57.50
1957 0.00 0.00 0.00 0.00 0.00 0.00 2.50 2.00 4.00 0.00 0.00 0.00 8.50
1958 0.00 0.00 0.00 0.00 3.50 40.00 103.00 34.50 7.50 0.00 0.00 0.00 188.50
1959 0.00 0.00 0.00 0.00 9.50 9.50 33.50 2.00 0.00 0.00 0.00 0.00 54.50
1960 0.00 0.00 0.00 0.00 0.50 0.00 42.00 32.00 0.00 0.00 0.00 0.00 74.50
1961 0.00 0.00 0.00 0.00 3.00 13.50 44.00 26.00 3.50 1.50 0.00 0.00 91.50
1962 0.00 0.00 0.00 0.00 0.00 0.50 15.00 7.00 0.00 0.00 0.00 0.00 22.50
1963 0.00 0.00 a 0.00 0.00 15.00 0.50 0.50 7.00 10.50 0.00 0.00 0.00 33.50
1964 0.00 0.00 0.00 0.00 6.00 0.00 8.00 7.00 0.00 0.00 0.00 z 0.00 k 21.00
1965 0.00 a 0.00 0.00 0.00 0.00 0.00 a 30.00 26.72 b 0.00 0.00 0.00 0.00 56.72
1966 0.00 0.00 0.00 0.00 0.00 7.50 b 1.00 9.30 a 2.50 0.00 a 0.00 0.00 a 20.30
1967 0.00 0.00 0.00 0.00 0.00 c 11.50 4.13 a 69.50 11.90 a 0.00 0.00 0.00 97.03
1968 0.00 0.00 0.00 0.00 0.00 a 5.69 a 33.67 b 10.00 1.55 a 0.00 0.00 0.00 50.91
1969 0.00 0.00 0.00 0.00 16.53 a 32.00 6.72 a 3.62 a 1.55 a 0.00 0.00 0.00 60.42
1970 0.00 0.00 0.00 0.00 a 0.00 b 28.00 18.00 4.13 a 0.00 0.00 0.00 a 0.00 50.13
1971 0.00 0.00 0.00 0.00 5.68 a 0.52 a 41.50 45.00 0.00 0.00 0.00 0.00 92.70
1972 0.00 0.00 0.00 0.00 8.86 c 1.03 a 27.00 24.00 1.00 0.00 0.00 0.00 61.89
1973 0.00 0.00 0.00 0.00 5.68 a 4.00 13.00 7.48 b 7.50 0.00 0.00 0.00 a 37.67
1974 0.00 a 0.00 0.00 0.00 a 0.00 1.00 10.00 20.00 24.50 0.00 0.00 0.00 55.50
1975 0.00 a 0.00 0.00 a 0.00 2.67 b 4.50 25.00 3.50 6.00 0.00 0.00 0.00 41.67
1976 0.00 0.00 z 0.00 0.00 1.00 0.52 a 12.00 0.50 3.00 0.00 0.00 0.00 17.02
1977 0.00 0.00 0.00 0.00 a 0.00 3.50 2.50 79.50 0.00 0.00 a 0.00 0.00 85.50
1978 0.00 0.00 0.00 0.00 0.00 26.50 39.00 27.50 0.00 0.00 0.00 0.00 93.00
1979 0.00 0.00 b 0.00 0.00 3.00 2.00 51.50 20.50 17.50 0.00 0.00 0.00 b 94.50
1980 0.00 0.00 0.00 0.00 0.00 0.00 11.50 10.50 0.00 0.50 0.00 0.00 22.50
1981 0.00 0.00 0.00 0.00 4.00 0.00 18.00 66.50 14.50 0.00 0.00 0.00 103.00
1982 0.00 0.00 0.00 0.00 0.00 29.50 0.00 z 12.00 6.50 0.00 0.00 0.00 48.00
1983 0.00 0.00 0.00 0.00 21.50 2.50 5.50 18.50 0.50 0.00 0.00 0.00 48.50
1984 0.00 0.00 0.00 2.00 0.00 6.50 23.50 17.00 4.50 4.00 0.00 0.00 57.50
1985 0.00 0.00 0.00 0.00 1.50 9.50 61.50 31.00 0.00 0.00 0.00 0.00 103.50
1986 0.00 0.00 0.00 0.00 3.00 6.50 1.00 40.00 6.00 0.00 0.00 0.00 56.50
1987 0.00 0.00 0.00 0.00 0.00 12.50 24.50 21.50 11.50 4.00 0.00 0.00 74.00
1988 0.00 0.00 0.00 0.00 4.00 6.50 31.00 16.00 9.50 0.00 0.00 0.00 67.00
1989 0.00 0.00 0.00 0.00 2.00 19.00 6.00 6.00 6.00 0.00 0.00 0.00 39.00
1990 0.00 0.00 0.00 0.00 0.00 8.50 57.50 64.50 3.50 0.00 0.00 0.00 134.00
1991 0.00 z 0.00 0.00 0.00 0.00 0.00 27.00 43.50 3.00 0.00 0.00 0.00 73.50
1992 0.00 0.00 0.00 0.00 2.50 35.50 22.50 34.50 1.00 0.00 0.00 0.00 96.00
1993 0.00 0.00 0.00 0.00 10.00 0.00 0.00 35.50 8.50 0.00 0.00 0.00 54.00
1994 0.00 0.00 0.00 0.00 0.00 1.50 45.00 37.50 1.50 0.00 0.00 0.00 85.50
1995 0.00 0.00 0.00 0.00 0.00 27.50 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00 27.50
1996 0.00 0.00 0.00 0.00 0.00 2.50 55.00 35.00 0.00 0.00 0.00 0.00 92.50
1997 0.00 0.00 0.00 0.00 3.00 0.00 10.00 66.00 9.00 0.00 0.00 0.00 88.00
1998 0.00 z 0.00 0.00 0.00 0.50 0.00 47.50 19.50 8.00 0.00 0.00 0.00 75.50
1999 0.00 0.00 0.00 0.00 1.00 10.00 2.00 18.17 b 0.00 0.00 0.00 0.00 31.17
2000 0.00 0.00 0.00 a 0.00 0.00 22.00 13.90 b 11.50 3.00 0.00 0.00 0.00 50.40
2001 0.00 0.00 0.00 0.00 0.00 2.59 a 3.00 17.00 0.00 0.00 0.00 0.00 22.59
2002 0.00 0.00 0.00 0.00 0.50 13.00 33.50 19.67 e 0.50 0.00 0.00 0.00 67.17
2003 0.00 0.00 0.00 0.00 0.00 35.50 74.50 25.00 9.50 0.00 0.00 0.00 144.50
2004 0.00 0.00 0.50 1.00 3.50 25.00 73.50 71.00 1.50 0.00 0.00 0.00 176.00
2005 0.00 0.00 0.00 0.00 15.50 1.50 26.00 45.50 0.00 0.00 0.00 0.00 88.50
2006 0.00 0.00 0.00 0.00 1.50 13.00 56.00 11.00 4.50 0.00 0.00 0.00 86.00
2007 0.00 0.00 0.00 0.00 1.00 6.50 39.50 11.50 0.00 0.00 0.00 0.00 58.50
2008 0.00 0.00 0.00 0.00 13.00 16.50 13.50 42.00 0.00 0.00 0.00 0.00 85.00
2009 0.00 0.00 0.00 0.00 0.00 z 23.50 109.02 a 47.00 28.00 0.00 0.00 0.00 207.52
2010 0.00 0.00 0.00 0.00 0.00 1.50 38.00 51.50 10.00 0.00 0.00 0.00 101.00
2011 0.00 a 0.00 0.00 0.00 0.00 0.00 7.50 16.50 25.71 b 0.00 g 0.00 a 0.00 g 49.71
2012 0.00 f 0.00 i 0.00 s 0.00 i 0.00 z 5.50 k 4.50 j 0.00 z 0.00 z 0.00 0.00 0.00 0.00
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 0.11 2.67 8.85 25.40 20.80 3.88 0.29 0.00 0.00 62.90
S.D. 0.00 0.00 0.05 0.52 4.46 10.50 23.60 19.47 5.62 1.05 0.00 0.00 39.36
SKEW 0.00 0.00 10.49 5.59 2.00 1.46 1.42 1.41 2.34 4.61 0.00 0.00 1.18
MAX 0.00 0.00 0.50 4.00 21.50 43.45 109.02 79.50 28.00 7.75 0.00 0.00 188.50
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 6.50
NO YRS 113 115 113 114 113 112 112 112 115 115 114 114 95