PETALUMA AP, CALIFORNIA

Monthly Total Cooling Degree Days

(046826)

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
1893 0.00 z 0.00 z 1.50 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 1.50
1894 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
1895 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
1896 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
1897 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
1898 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
1899 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
1900 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
1901 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
1902 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
1903 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
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 z 0.00
1905 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
1906 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
1907 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
1908 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
1909 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
1910 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
1911 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
1912 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
1913 0.00 z 0.00 i 0.00 0.00 3.00 12.00 70.50 121.50 99.50 26.50 0.00 0.00 333.00
1914 0.00 0.00 14.00 2.00 0.00 16.50 15.50 15.50 14.50 4.00 0.00 0.00 82.00
1915 0.00 0.00 0.00 0.00 8.50 9.00 51.00 63.50 7.00 3.00 0.00 0.00 142.00
1916 0.00 0.00 0.00 0.00 0.00 4.00 56.00 19.50 45.00 0.00 0.00 0.00 124.50
1917 0.00 0.00 0.00 0.00 0.00 43.50 76.50 12.00 78.00 19.00 0.00 0.00 229.00
1918 0.00 0.00 0.00 1.50 0.00 29.50 16.00 0.50 2.00 10.00 0.00 0.00 59.50
1919 0.00 0.00 0.00 0.00 12.00 7.00 23.00 39.00 52.00 3.50 0.00 0.00 136.50
1920 0.00 0.00 0.00 22.50 46.00 66.00 77.50 109.00 38.00 1.00 0.00 0.00 360.00
1921 0.00 0.00 0.00 26.50 2.50 111.50 123.00 123.00 100.00 48.50 0.00 0.00 535.00
1922 0.00 0.00 0.00 1.50 35.50 63.50 56.50 25.00 99.00 1.50 0.00 0.00 282.50
1923 0.00 0.00 0.00 0.00 1.00 0.00 28.00 72.00 104.00 21.50 12.50 0.00 239.00
1924 0.00 0.00 0.00 12.00 47.00 38.50 23.50 32.50 48.50 6.00 0.00 0.00 208.00
1925 23.00 0.00 0.00 0.00 5.50 32.00 44.00 14.00 9.50 9.50 0.00 0.00 137.50
1926 0.00 0.00 0.00 16.00 14.00 39.50 72.50 47.50 16.50 36.50 0.00 0.00 242.50
1927 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 10.00 p 8.00 0.00 0.00 8.00
1928 0.00 0.00 0.00 3.89 c 6.00 52.00 28.00 34.50 70.00 14.00 0.00 0.00 208.39
1929 0.00 0.00 0.00 0.00 2.00 73.50 77.00 124.50 40.00 118.00 11.00 0.50 446.50
1930 0.00 8.50 9.00 16.50 0.00 18.00 25.50 17.50 4.50 24.00 0.00 0.00 123.50
1931 0.00 0.00 0.00 1.50 49.00 18.00 108.50 62.00 50.50 5.00 0.00 0.00 294.50
1932 0.00 0.00 0.00 0.00 6.00 27.00 30.50 43.00 70.50 3.50 6.50 0.00 187.00
1933 0.00 0.00 0.00 0.00 7.00 5.00 83.00 46.00 20.50 54.50 0.00 0.00 216.00
1934 0.00 0.00 0.00 0.00 11.50 40.00 48.50 56.50 49.50 13.50 1.00 0.00 220.50
1935 0.00 0.00 0.00 0.00 14.50 52.50 60.00 39.00 35.00 10.50 0.00 0.00 211.50
1936 0.00 0.00 0.00 2.50 21.50 45.00 84.50 68.00 86.50 39.00 0.00 0.00 347.00
1937 0.00 0.00 0.00 0.00 4.50 56.50 97.50 53.00 54.00 22.00 0.00 0.00 287.50
1938 0.00 0.00 0.00 0.50 7.00 19.00 73.50 65.50 51.50 3.50 0.00 0.00 220.50
1939 0.00 0.00 0.00 3.00 18.00 38.00 41.00 45.50 151.50 22.50 0.00 0.00 319.50
1940 0.00 0.00 0.00 4.00 0.00 22.76 a 50.00 67.50 43.50 38.50 0.00 0.00 226.26
1941 0.00 0.00 0.00 0.00 25.50 27.50 91.00 53.50 61.00 29.50 2.00 0.00 290.00
1942 0.00 0.00 0.00 0.00 22.00 37.00 92.50 56.50 45.50 19.50 0.00 0.00 273.00
1943 0.00 a 0.00 0.00 0.00 a 27.38 a 34.50 75.43 a 69.75 a 109.50 28.00 0.00 0.00 344.57
1944 0.00 0.00 0.00 0.00 6.50 24.50 26.00 67.00 96.00 19.50 0.00 0.00 239.50
1945 0.00 0.00 0.00 0.00 0.00 109.82 b 78.00 51.50 67.00 13.00 3.00 0.00 322.32
1946 0.00 0.00 0.00 0.00 0.00 16.50 64.50 48.50 61.00 12.29 b 0.00 0.00 202.79
1947 0.00 0.00 b 0.00 a 10.00 o 1.11 c 72.50 42.00 45.43 b 62.78 c 29.50 0.00 0.00 253.32
1948 0.00 0.00 d 0.00 0.00 0.00 a 28.00 81.50 70.00 55.50 6.50 0.00 0.00 241.50
1949 0.00 0.00 0.00 0.00 15.50 57.50 46.50 b 41.69 b 95.50 9.00 0.00 0.00 265.69
1950 0.00 0.00 0.00 1.50 26.50 32.50 56.00 125.50 88.50 23.50 8.00 0.00 362.00
1951 0.00 0.00 0.00 0.00 17.00 12.00 49.00 56.50 42.00 16.00 0.00 0.00 192.50
1952 0.00 0.00 8.00 0.00 24.00 5.00 83.00 53.00 118.00 26.00 0.00 0.00 317.00
1953 0.00 0.00 0.00 0.00 3.50 29.00 75.00 56.00 99.50 21.00 0.00 h 0.00 e 284.00
1954 0.00 e 0.00 0.00 0.00 3.00 46.50 117.50 24.00 49.50 9.50 0.00 0.00 250.00
1955 0.00 0.00 0.00 0.00 14.00 23.00 41.00 69.50 76.00 6.72 a 1.00 0.00 231.22
1956 0.00 0.00 0.00 0.00 13.00 55.50 46.00 54.50 60.50 2.00 0.00 0.00 231.50
1957 0.00 0.00 0.00 3.50 0.00 81.50 91.50 62.00 106.50 0.50 0.00 0.00 345.50
1958 0.00 0.00 0.00 0.00 9.00 57.00 96.00 177.73 a 183.00 51.00 0.50 0.00 574.23
1959 0.00 0.00 0.00 a 2.22 c 9.50 87.00 134.00 111.00 83.50 54.25 a 0.00 0.00 481.47
1960 0.00 0.00 0.50 1.00 6.50 122.50 84.50 68.50 69.50 11.50 0.00 0.00 364.50
1961 0.00 0.00 0.00 0.50 0.00 90.00 153.50 139.00 89.50 50.00 0.00 0.00 522.50
1962 0.00 0.00 0.00 1.00 1.50 38.50 33.50 99.00 47.00 15.00 0.00 0.00 235.50
1963 0.00 0.00 0.00 0.00 1.50 12.50 52.00 77.50 128.00 12.00 0.00 0.00 283.50
1964 0.00 0.00 0.50 0.00 0.00 36.50 66.00 74.00 89.50 36.00 0.00 0.00 302.50
1965 0.00 0.00 0.00 8.50 0.00 a 3.00 41.00 116.50 35.50 47.00 0.00 0.00 251.50
1966 0.00 0.00 0.00 6.50 1.00 70.50 40.00 93.50 78.00 10.50 0.00 0.00 300.00
1967 0.00 0.00 0.00 0.00 13.50 14.00 87.50 0.00 z 118.50 18.50 0.50 0.00 252.50
1968 0.00 0.00 0.00 10.00 3.00 70.00 86.50 96.50 87.50 1.50 0.00 0.00 355.00
1969 0.00 0.00 0.00 0.00 21.50 16.50 79.50 136.00 107.07 a 10.00 0.00 0.00 c 370.57
1970 0.00 0.00 1.50 0.00 48.50 20.00 84.50 76.00 117.50 14.00 0.00 0.00 362.00
1971 0.00 0.00 0.00 0.00 0.00 35.50 66.50 153.00 155.50 34.00 0.00 0.00 444.50
1972 0.00 0.00 0.00 0.00 10.50 38.00 113.00 111.00 32.00 13.50 0.00 0.00 318.00
1973 0.00 0.00 0.00 0.00 22.00 129.50 96.50 27.50 64.50 2.50 0.00 0.00 342.50
1974 0.00 0.00 0.00 0.00 14.00 53.50 98.50 102.50 83.50 45.50 0.00 0.00 397.50
1975 0.00 0.00 0.00 0.00 37.00 27.50 80.50 77.50 56.50 4.00 0.00 0.00 283.00
1976 0.00 0.00 0.00 0.00 30.00 144.50 83.50 96.00 64.50 30.50 0.00 0.00 449.00
1977 0.00 0.00 0.00 0.00 1.50 66.00 71.50 82.50 47.50 14.50 0.00 0.00 283.50
1978 0.00 0.00 0.00 0.00 30.50 21.00 73.00 90.50 98.50 40.50 0.00 0.00 a 354.00
1979 0.00 0.00 0.00 0.00 23.50 36.50 116.00 58.00 156.00 28.00 0.00 0.00 418.00
1980 0.00 0.00 0.00 0.00 3.50 35.50 114.00 35.50 61.00 66.50 0.50 0.00 316.50
1981 0.00 0.00 0.00 a 25.50 9.50 154.00 58.00 81.00 34.00 1.50 0.00 0.00 363.50
1982 0.00 0.00 0.00 10.00 15.50 6.50 59.00 68.00 60.50 7.00 0.00 0.00 226.50
1983 0.00 z 0.00 0.00 0.00 17.00 29.50 106.50 132.50 132.50 34.00 0.00 0.00 452.00
1984 0.00 0.00 0.00 0.00 46.00 37.00 185.00 115.00 155.00 13.50 0.00 0.00 551.50
1985 0.00 0.00 0.00 5.50 0.00 99.00 124.50 66.00 28.00 30.50 1.00 0.00 354.50
1986 0.00 0.00 1.00 1.00 5.50 42.00 79.50 58.50 18.00 16.00 2.00 0.00 223.50
1987 0.00 0.00 0.00 1.00 70.00 51.00 45.50 87.00 67.50 47.00 0.00 0.00 369.00
1988 0.00 0.00 0.00 3.00 23.50 72.00 148.00 94.00 55.50 26.00 2.00 0.00 424.00
1989 0.00 0.00 0.00 28.50 13.00 19.50 97.00 73.50 37.50 9.00 0.00 0.00 278.00
1990 0.00 0.00 0.00 0.50 23.50 51.50 104.00 0.00 z 95.00 0.00 z 0.00 z 0.00 z 274.50
1991 0.00 0.00 0.00 0.00 2.00 17.00 39.00 r 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 19.00
1992 0.00 0.00 0.00 1.03 a 14.50 16.50 61.00 67.00 49.50 30.00 1.00 0.00 240.53
1993 0.00 0.00 0.00 0.00 8.00 84.50 50.50 109.50 41.50 7.00 0.00 0.00 301.00
1994 0.00 0.00 0.00 1.00 4.00 34.00 18.50 51.00 35.00 9.00 0.00 0.00 152.50
1995 0.00 0.00 0.00 0.00 0.00 41.00 98.00 94.50 43.00 30.00 0.00 0.00 306.50
1996 0.00 0.00 0.00 8.50 14.00 42.50 75.00 83.50 33.50 40.00 0.00 0.00 297.00
1997 0.00 0.00 0.00 0.00 67.50 35.00 78.00 111.50 138.00 22.00 9.50 0.00 461.50
1998 0.00 0.00 0.00 4.00 0.00 n 21.00 81.50 119.00 27.00 m 4.50 0.00 0.00 230.00
1999 0.00 d 0.00 0.00 5.00 0.00 0.00 z 53.00 74.00 63.00 39.00 0.00 0.00 234.00
2000 0.00 0.00 0.00 z 8.50 35.00 g 64.50 37.50 61.50 99.50 6.20 a 0.00 0.00 277.70
2001 0.00 0.00 z 0.00 0.00 40.00 76.50 48.50 61.45 c 40.34 a 51.50 0.00 0.00 318.29
2002 0.00 0.00 0.00 3.50 9.00 58.00 108.00 84.50 98.00 24.00 0.00 0.00 385.00
2003 0.00 0.00 0.00 0.00 8.50 60.00 111.00 97.00 90.50 19.00 0.00 0.00 386.00
2004 0.00 0.00 9.00 16.00 6.50 36.50 77.00 144.00 126.00 26.50 0.00 0.00 441.50
2005 0.00 0.00 1.00 0.00 4.00 15.00 71.00 f 71.00 26.00 13.00 0.00 0.00 130.00
2006 0.00 0.00 0.00 0.00 11.00 85.50 160.00 44.00 55.18 b 0.50 0.00 0.00 356.18
2007 0.00 0.00 0.00 a 1.00 25.50 45.00 98.00 105.00 48.50 0.50 0.00 0.00 323.50
2008 0.00 a 0.00 0.00 0.50 50.00 80.50 79.50 111.00 81.00 11.00 1.50 0.00 415.00
2009 0.00 0.00 0.00 10.50 22.00 35.50 52.50 101.50 131.00 9.30 a 0.00 0.00 362.30
2010 0.00 0.00 0.00 0.00 0.00 40.50 11.50 n 54.50 83.00 34.00 6.00 0.00 218.00
2011 0.00 a 0.00 b 0.00 b 0.00 c 0.00 b 29.42 d 51.31 b 29.45 a 106.03 a 22.14 c 0.00 0.00 238.36
2012 0.00 0.00 0.00 9.50 0.00 43.50 58.00 44.50 20.00 50.00 0.00 0.00 225.50
2013 0.00 0.00 v 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
Period of Record Statistics
MEAN 0.23 0.09 0.46 2.99 13.60 44.71 73.47 73.08 70.94 21.26 0.72 0.01 301.03
S.D. 2.32 0.86 2.04 6.06 15.57 31.32 33.04 34.88 38.20 18.50 2.25 0.05 104.33
SKEW 9.75 9.70 5.01 2.63 1.56 1.25 0.66 0.43 0.55 1.83 3.76 9.75 0.29
MAX 23.00 8.50 14.00 28.50 70.00 154.00 185.00 177.73 183.00 118.00 12.50 0.50 574.23
MIN 0.00 0.00 0.00 0.00 0.00 0.00 15.50 0.50 2.00 0.00 0.00 0.00 59.50
NO YRS 98 97 99 98 97 98 96 96 97 98 97 98 86