date! ,

Monthly Total Cooling Degree Days

(a vali)

Base Temperature = 65 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201210
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
1909 0.00 z 0.00 z 0.00 z 0.00 w 0.00 e 31.03 a 60.50 95.00 0.00 0.00 0.00 b 0.00 c 186.53
1910 0.00 b 0.00 d 0.00 b 0.00 0.00 136.61 b 132.50 51.50 7.76 a 0.00 a 0.00 b 0.00 328.37
1911 0.00 0.00 b 0.00 b 0.00 1.00 38.28 a 42.00 i 33.50 0.00 0.00 c 0.00 k 0.00 b 72.78
1912 0.00 d 0.00 b 0.00 e 0.00 a 0.00 a 37.24 a 56.66 b 6.00 6.35 d 1.19 e 0.00 d 0.00 p 107.44
1913 0.00 a 0.00 a 0.00 0.00 b 0.00 b 34.50 28.42 a 36.00 f 4.14 a 0.00 h 0.00 0.00 e 67.05
1914 0.00 j 0.00 0.00 b 0.00 31.50 12.50 69.00 47.00 15.50 1.00 0.00 0.00 176.50
1915 0.00 0.00 0.00 0.00 0.00 3.89 c 18.50 32.00 12.00 0.00 0.00 b 0.00 a 66.39
1916 0.00 a 0.00 a 0.00 0.00 0.00 0.00 167.40 a 96.10 a 2.00 0.00 0.00 0.00 b 265.50
1917 0.00 0.00 0.00 0.00 2.50 0.00 83.00 13.50 1.00 0.00 0.00 0.00 100.00
1918 0.00 a 0.00 b 0.00 a 0.00 4.50 3.50 41.50 62.00 0.00 0.00 0.00 0.00 111.50
1919 0.00 0.00 0.00 a 0.00 a 15.50 10.50 110.50 61.48 a 0.00 h 0.00 0.00 a 0.00 c 197.98
1920 0.00 a 0.00 0.00 0.00 0.00 20.50 72.00 54.50 30.00 1.00 0.00 0.00 a 178.00
1921 0.00 0.00 0.00 0.00 13.00 82.50 231.98 a 51.15 a 26.00 0.00 0.00 0.00 404.63
1922 0.00 0.00 0.00 0.00 0.00 37.50 66.00 79.57 a 17.50 2.50 0.00 c 0.00 203.07
1923 0.00 0.00 0.00 0.00 h 1.50 44.00 94.00 22.50 8.50 0.00 0.00 0.00 170.50
1924 0.00 0.00 0.00 0.00 0.50 17.50 79.00 61.50 2.07 a 0.00 0.00 0.00 160.57
1925 0.00 a 0.00 0.00 0.00 9.50 54.50 114.00 136.00 19.50 0.00 a 0.00 a 0.00 333.50
1926 0.00 d 0.00 0.00 0.00 a 5.00 23.50 38.50 66.50 0.00 0.00 0.00 0.00 133.50
1927 0.00 0.00 0.00 0.00 0.00 22.50 41.00 16.50 25.00 0.00 0.00 0.00 105.00
1928 0.00 0.00 0.00 0.00 0.00 10.50 70.00 82.50 3.00 0.00 0.00 0.00 a 166.00
1929 0.00 a 0.00 0.00 0.00 0.00 29.50 122.50 91.50 44.50 0.00 0.00 0.00 288.00
1930 0.00 a 0.00 a 0.00 0.00 0.00 66.50 116.00 166.50 17.00 0.00 0.00 a 0.00 366.00
1931 0.00 0.00 0.00 0.00 4.13 a 52.76 a 163.78 a 94.50 46.00 4.00 0.00 0.00 z 365.18
1932 0.00 b 0.00 a 0.00 0.00 10.85 a 26.50 101.50 115.50 8.00 0.00 0.00 0.00 a 262.35
1933 0.00 a 0.00 b 0.00 0.00 0.00 75.00 101.50 54.00 21.50 0.00 0.00 0.00 252.00
1934 0.00 0.00 0.00 a 0.00 b 23.00 30.00 94.00 77.00 0.00 0.00 0.00 0.00 b 224.00
1935 0.00 a 0.00 0.00 0.00 0.00 12.50 152.00 92.50 0.00 0.00 0.00 0.00 257.00
1936 0.00 0.00 0.00 0.00 5.00 48.50 213.00 152.50 20.50 0.00 0.00 0.00 b 439.50
1937 0.00 0.00 0.00 0.00 0.00 33.00 114.00 202.00 28.50 0.00 0.00 0.00 377.50
1938 0.00 0.00 0.00 a 0.00 0.00 41.79 b 98.00 170.50 13.00 4.50 0.00 0.00 327.79
1939 0.00 0.00 c 0.00 0.00 6.00 9.00 141.00 85.00 16.50 0.00 0.00 0.00 257.50
1940 0.00 0.00 0.00 0.00 3.00 14.00 113.50 84.50 38.00 0.00 0.00 0.00 253.00
1941 0.00 0.00 0.00 0.00 15.00 90.50 217.00 120.50 26.50 0.00 0.00 0.00 469.50
1942 0.00 0.00 0.00 3.50 6.00 11.50 72.00 82.50 12.00 0.00 0.00 a 0.00 187.50
1943 0.00 0.00 0.00 0.00 3.50 30.00 173.00 104.00 11.50 2.50 0.00 0.00 324.50
1944 0.00 0.00 0.00 0.00 28.50 38.50 104.00 99.00 4.50 0.00 0.00 a 0.00 274.50
1945 0.00 0.00 0.00 0.00 0.00 42.00 79.00 102.00 18.50 0.00 0.00 0.00 241.50
1946 0.00 a 0.00 0.00 0.00 0.00 24.00 105.00 83.00 5.00 0.00 0.00 0.00 j 217.00
1947 0.00 f 0.00 b 0.00 c 0.00 a 1.00 g 0.00 z 84.00 127.00 59.50 f 2.00 0.00 0.00 a 213.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 48.00 117.00 113.00 88.00 0.00 0.00 0.00 366.00
1949 0.00 0.00 0.00 0.50 0.00 70.34 a 130.00 133.50 2.50 0.00 0.00 0.00 336.84
1950 0.00 0.00 0.00 0.00 0.00 10.00 43.50 23.50 1.00 0.00 0.00 0.00 78.00
1951 0.00 0.00 0.00 a 0.00 a 4.00 12.50 98.00 22.50 0.00 0.00 0.00 0.00 137.00
1952 0.00 a 0.00 b 0.00 0.00 0.00 g 41.00 114.38 b 59.00 14.50 0.00 a 0.00 0.00 228.88
1953 0.00 0.00 0.00 0.00 11.37 a 22.24 a 60.00 149.00 19.80 e 1.55 a 0.00 0.00 263.96
1954 0.00 0.00 0.00 0.00 0.00 a 34.00 107.50 67.50 7.00 0.00 0.00 0.00 216.00
1955 0.00 d 0.00 0.00 0.00 0.00 a 36.50 175.67 a 168.50 10.50 0.00 0.00 0.00 391.17
1956 0.00 0.00 0.00 0.00 b 0.00 52.00 31.50 27.00 5.50 0.00 0.00 0.00 a 116.00
1957 0.00 0.00 a 0.00 1.00 6.50 1.50 96.50 79.57 a 9.00 0.00 0.00 0.00 194.07
1958 0.00 0.00 0.00 0.00 a 0.00 a 2.50 49.00 79.00 19.00 0.00 0.00 0.00 a 149.50
1959 0.00 0.00 0.00 0.00 0.00 50.00 114.18 a 103.50 30.50 0.00 0.00 0.00 298.18
1960 0.00 0.00 0.00 0.00 0.00 15.50 88.50 107.50 44.00 0.00 0.00 0.00 255.50
1961 0.00 0.00 0.00 0.00 10.50 61.50 79.50 139.00 58.00 6.50 0.00 0.00 355.00
1962 0.00 0.00 0.00 b 0.00 4.00 35.00 19.50 46.50 4.50 1.00 0.00 0.00 110.50
1963 0.00 0.00 0.00 0.00 0.00 32.50 148.00 64.00 10.00 5.00 0.00 0.00 259.50
1964 0.00 0.00 0.00 0.00 10.00 46.50 105.50 40.50 0.00 z 1.00 0.00 0.00 203.50
1965 0.00 0.00 0.00 1.00 2.21 c 6.00 34.00 49.50 1.50 0.00 0.00 0.00 94.21
1966 0.00 0.00 z 0.00 0.00 1.00 46.00 148.00 56.00 2.50 0.00 a 0.00 0.00 253.50
1967 0.00 a 0.00 b 0.00 a 0.00 0.00 0.00 z 0.00 z 11.50 t 12.00 0.00 0.00 0.00 12.00
1968 0.00 0.00 0.00 0.00 0.00 1.50 78.50 0.00 z 9.00 2.50 0.00 0.00 91.50
1969 0.00 0.00 0.00 0.00 13.00 0.00 54.50 165.50 14.50 0.00 0.00 0.00 247.50
1970 0.00 0.00 0.00 z 0.00 4.00 38.00 161.50 120.00 17.50 0.00 0.00 0.00 341.00
1971 0.00 0.00 0.00 0.00 0.00 16.50 51.00 78.00 31.00 0.00 0.00 0.00 176.50
1972 0.00 0.00 0.00 0.00 0.00 10.00 41.00 58.50 0.00 0.00 0.00 0.00 109.50
1973 0.00 0.00 0.00 0.00 1.00 4.50 100.00 78.50 22.00 0.00 0.00 0.00 206.00
1974 0.00 0.00 l 0.00 0.00 0.00 25.00 121.50 32.50 0.00 0.00 0.00 0.00 179.00
1975 0.00 0.00 0.00 0.00 3.50 9.50 231.50 85.50 2.00 1.00 0.00 0.00 333.00
1976 0.00 0.00 0.00 z 0.00 0.00 56.50 119.50 128.50 29.00 0.00 0.00 0.00 333.50
1977 0.00 0.00 0.00 0.00 14.50 13.39 b 68.00 6.00 0.00 0.00 0.00 0.00 101.89
1978 0.00 b 0.00 0.00 0.00 2.00 40.00 74.29 b 66.65 a 43.00 0.00 0.00 0.00 225.94
1979 0.00 0.00 0.00 0.00 0.00 2.50 69.00 25.50 14.00 0.00 0.00 0.00 111.00
1980 0.00 a 0.00 0.00 0.00 14.00 25.50 121.00 44.00 3.00 0.00 0.00 0.00 207.50
1981 0.00 0.00 0.00 0.00 1.00 2.50 0.00 z 0.00 z 14.00 0.00 0.00 0.00 17.50
1982 0.00 0.00 0.00 0.00 0.00 2.50 84.50 f 43.00 16.50 0.00 0.00 0.00 62.00
1983 0.00 0.00 0.00 0.00 0.00 19.00 158.50 213.00 49.00 0.00 0.00 0.00 439.50
1984 0.00 0.00 0.00 0.00 8.00 14.00 96.50 106.00 15.50 0.00 a 0.00 0.00 240.00
1985 0.00 0.00 0.00 0.00 h 5.00 f 6.50 88.50 49.00 18.50 0.00 0.00 0.00 a 162.50
1986 0.00 0.00 0.00 0.00 b 17.50 24.00 100.00 67.00 0.00 0.00 0.00 0.00 208.50
1987 0.00 0.00 0.00 a 0.00 a 7.50 52.00 134.50 105.00 7.00 0.00 0.00 0.00 306.00
1988 0.00 0.00 0.00 0.00 5.00 107.07 a 239.50 111.60 a 7.00 0.00 0.00 0.00 470.17
1989 0.00 0.00 0.00 0.00 1.50 7.00 120.50 108.00 15.00 1.00 0.00 0.00 253.00
1990 0.00 0.00 0.00 0.00 0.00 35.50 0.00 z 91.00 34.00 0.00 0.00 0.00 160.50
1991 0.00 0.00 0.00 0.00 0.00 20.00 108.00 164.50 15.00 0.00 0.00 0.00 307.50
1992 0.00 0.00 0.00 0.00 5.00 31.50 18.00 46.50 7.50 6.00 0.00 0.00 114.50
1993 0.00 0.00 0.00 0.00 0.00 6.00 45.00 90.50 0.00 0.00 0.00 0.00 141.50
1994 0.00 0.00 0.00 0.00 2.50 31.00 69.50 50.00 7.50 0.00 0.00 0.00 160.50
1995 0.00 0.00 0.00 0.00 9.00 51.50 84.50 90.00 27.50 1.50 0.00 0.00 264.00
1996 0.00 a 0.00 0.00 0.00 1.00 0.00 z 38.50 78.50 23.50 0.00 0.00 0.00 141.50
1997 0.00 0.00 0.00 0.00 0.00 41.00 73.50 63.00 22.00 0.00 0.00 0.00 199.50
1998 0.00 0.00 0.00 0.00 10.50 17.50 143.63 a 140.50 51.00 0.00 0.00 0.00 363.13
1999 0.00 0.00 0.00 0.00 12.73 c 23.50 175.15 a 60.93 b 0.00 z 0.00 q 0.00 c 0.00 272.31
2000 0.00 0.00 0.00 0.00 0.00 7.00 81.50 96.00 14.00 0.00 0.00 0.00 b 198.50
2001 0.00 0.00 0.00 0.00 0.00 36.00 108.50 a 146.50 32.50 0.00 0.00 b 0.00 323.50
2002 0.00 0.00 0.00 0.00 12.50 56.00 197.50 73.50 40.00 0.00 0.00 0.00 379.50
2003 0.00 0.00 0.00 0.00 0.00 0.00 150.00 122.00 f 26.00 8.00 0.00 0.00 184.00
2004 0.00 0.00 0.00 0.00 0.00 4.00 87.00 28.00 17.50 0.00 0.00 0.00 136.50
2005 0.00 0.00 0.00 0.00 b 0.00 19.50 126.00 77.00 41.50 0.00 0.00 0.00 264.00
2006 0.00 0.00 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 118.00 15.00 0.00 z 0.00 0.00 133.00
2007 0.00 0.00 0.00 0.00 z 0.00 z 28.00 159.50 0.00 z 33.00 0.50 0.00 0.00 221.00
2008 0.00 z 0.00 z 0.00 0.00 0.00 39.50 93.50 92.50 0.00 z 0.00 0.00 0.00 a 225.50
2009 0.00 0.00 0.00 0.00 0.00 35.50 0.00 z 43.00 12.50 0.00 0.00 0.00 91.00
2010 0.00 0.00 0.00 0.00 z 5.50 23.50 183.00 141.00 1.50 0.00 0.00 0.00 354.50
2011 0.00 0.00 0.00 0.00 0.00 2.31 d 188.50 151.50 28.50 9.50 0.00 0.00 380.31
2012 0.00 f 0.00 0.00 a 0.00 0.50 39.50 218.00 0.00 z 0.00 t 0.00 z 0.00 z 0.00 z 258.00
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.06 3.99 29.46 105.95 84.90 16.62 0.64 0.00 0.00 242.81
S.D. 0.00 0.00 0.00 0.38 6.31 24.03 51.58 44.15 15.64 1.71 0.00 0.00 101.87
SKEW 0.00 0.00 0.00 7.85 2.11 1.47 0.61 0.54 1.51 3.34 0.00 0.00 0.28
MAX 0.00 0.00 0.00 3.50 31.50 136.61 239.50 213.00 88.00 9.50 0.00 0.00 470.17
MIN 0.00 0.00 0.00 0.00 0.00 0.00 18.00 6.00 0.00 0.00 0.00 0.00 66.39
NO YRS 98 99 99 97 98 100 97 97 98 100 102 100 72