FORT COLLINS, COLORADO

Monthly Total Cooling Degree Days

(053005)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200602
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
1900 0.00 0.00 0.00 0.00 3.50 110.50 110.00 106.00 27.50 0.00 0.00 0.00 357.50
1901 0.00 0.00 0.00 0.00 0.50 50.50 232.00 125.50 19.50 0.00 0.00 0.00 428.00
1902 0.00 0.00 0.00 0.00 0.00 48.00 80.00 128.00 9.00 f 0.00 0.00 0.00 256.00
1903 0.00 0.00 0.00 0.00 0.00 23.50 134.50 111.00 22.00 0.00 0.00 0.00 291.00
1904 0.00 0.00 0.00 0.00 0.00 2.00 66.00 88.50 2.00 0.00 0.00 0.00 158.50
1905 0.00 0.00 0.00 0.00 0.00 48.00 58.00 105.50 1.00 0.00 0.00 0.00 212.50
1906 0.00 0.00 0.00 0.00 0.50 27.00 55.00 86.50 12.00 0.00 0.00 0.00 181.00
1907 0.00 0.00 0.00 a 0.00 0.00 7.50 101.00 83.50 3.50 0.00 0.00 0.00 195.50
1908 0.00 0.00 e 0.00 0.00 0.00 17.50 113.50 62.00 34.50 2.00 0.00 0.00 229.50
1909 0.00 0.00 0.00 0.00 0.00 55.50 170.00 170.00 11.50 0.00 0.00 0.00 407.00
1910 0.00 0.00 a 0.00 0.00 2.00 54.50 191.50 114.50 30.00 0.00 0.00 0.00 392.50
1911 0.00 0.00 0.00 0.00 2.00 64.50 63.50 85.00 17.50 0.00 0.00 0.00 232.50
1912 0.00 0.00 0.00 0.00 0.00 9.50 61.50 59.00 5.00 0.00 0.00 0.00 a 135.00
1913 0.00 a 0.00 0.00 0.00 5.50 37.50 93.00 145.00 9.50 0.00 0.00 0.00 290.50
1914 0.00 0.00 0.00 0.00 0.00 30.00 114.50 91.00 14.50 0.00 0.00 0.00 250.00
1915 0.00 0.00 0.00 0.00 0.00 7.00 50.00 12.50 3.00 0.00 0.00 0.00 72.50
1916 0.00 0.00 0.00 0.00 0.00 41.50 142.00 61.50 7.00 0.00 0.00 0.00 252.00
1917 0.00 0.00 0.00 a 0.00 0.00 46.00 161.50 45.00 3.00 0.00 0.00 0.00 255.50
1918 0.00 0.00 0.00 0.00 0.00 120.50 79.00 76.50 4.50 0.00 0.00 0.00 280.50
1919 0.00 0.00 0.00 0.00 0.00 83.50 197.00 111.00 36.00 0.00 0.00 a 0.00 427.50
1920 0.00 0.00 0.00 a 0.00 0.50 19.00 127.00 77.50 11.50 0.00 0.00 0.00 235.50
1921 0.00 0.00 0.00 0.00 0.00 67.50 156.00 95.50 11.00 0.00 0.00 0.00 a 330.00
1922 0.00 0.00 0.00 0.00 1.00 98.50 122.50 194.50 22.50 1.00 0.00 0.00 440.00
1923 0.00 0.00 0.00 0.00 2.50 21.00 157.00 75.50 0.00 b 0.00 0.00 0.00 256.00
1924 0.00 0.00 0.00 0.00 0.00 57.50 115.50 117.50 12.50 0.00 0.00 0.00 303.00
1925 0.00 0.00 0.00 0.00 13.00 83.00 192.00 70.50 39.00 0.00 0.00 0.00 397.50
1926 0.00 0.00 0.00 0.00 0.00 43.00 86.50 110.00 6.50 3.50 0.00 0.00 249.50
1927 0.00 0.00 0.00 0.00 1.50 51.50 94.50 26.00 32.50 0.00 0.00 0.00 206.00
1928 0.00 0.00 0.00 0.00 a 6.00 8.50 96.50 81.50 10.00 0.00 0.00 0.00 202.50
1929 0.00 0.00 0.00 0.00 0.00 43.00 183.00 156.00 13.50 0.00 0.00 0.00 a 395.50
1930 0.00 0.00 0.00 0.00 1.50 60.00 178.00 111.50 6.00 0.00 0.00 0.00 357.00
1931 0.00 0.00 0.00 a 0.00 1.50 121.50 226.00 113.00 48.50 0.00 0.00 a 0.00 510.50
1932 0.00 0.00 0.00 0.00 8.00 43.50 212.50 156.50 8.50 0.00 0.00 0.00 429.00
1933 0.00 0.00 0.00 0.00 c 4.00 130.50 219.50 94.00 39.00 0.00 0.00 0.00 487.00
1934 0.00 0.00 0.00 0.00 22.00 f 71.00 265.05 a 177.50 4.00 1.50 0.00 0.00 519.05
1935 0.00 0.00 0.00 0.00 0.00 45.50 214.50 150.50 3.00 0.00 0.00 0.00 413.50
1936 0.00 0.00 0.00 0.00 6.50 136.00 267.00 164.00 33.00 0.00 0.00 0.00 606.50
1937 0.00 0.00 0.00 a 0.00 2.50 79.50 204.08 a 223.00 45.50 0.00 0.00 0.00 554.58
1938 0.00 0.00 0.00 0.00 4.00 43.00 152.50 188.50 12.50 0.00 c 0.00 0.00 400.50
1939 0.00 0.00 0.00 0.00 14.50 62.50 269.50 144.00 57.50 0.00 0.00 0.00 548.00
1940 0.00 0.00 0.00 d 0.00 13.50 137.00 238.59 c 138.00 43.00 0.00 0.00 0.00 570.09
1941 0.00 0.00 0.00 0.00 a 6.50 48.50 136.00 111.50 3.00 0.00 0.00 0.00 305.50
1942 0.00 0.00 0.00 0.00 5.50 28.97 a 156.50 90.00 2.50 0.50 0.00 0.00 a 283.97
1943 0.00 0.00 0.00 0.00 4.00 64.50 191.00 176.00 0.00 0.00 0.00 0.00 435.50
1944 0.00 0.00 0.00 0.00 1.50 44.50 126.00 173.00 4.50 0.00 0.00 0.00 349.50
1945 0.00 0.00 0.00 0.00 0.00 16.00 159.50 127.00 40.50 0.00 0.00 0.00 343.00
1946 0.00 0.00 0.00 a 0.00 0.00 75.50 181.00 127.10 a 7.50 0.00 0.00 0.00 391.10
1947 0.00 0.00 0.00 0.00 0.50 19.50 153.50 163.00 56.50 1.50 0.00 0.00 394.50
1948 0.00 0.00 0.00 0.00 4.65 a 51.50 159.50 117.50 47.50 0.00 0.00 0.00 380.65
1949 0.00 0.00 0.00 0.00 0.50 50.50 166.50 135.50 8.00 0.00 0.00 0.00 361.00
1950 0.00 0.00 0.00 0.00 0.00 66.00 70.00 39.00 20.00 0.00 0.00 0.00 195.00
1951 0.00 0.00 0.00 0.00 8.50 10.00 192.00 87.00 9.50 0.00 0.00 0.00 307.00
1952 0.00 0.00 0.00 0.00 0.00 128.50 173.50 127.50 28.00 0.00 0.00 0.00 457.50
1953 0.00 0.00 0.00 0.00 1.00 117.50 198.00 111.50 24.00 0.00 0.00 0.00 452.00
1954 0.00 0.00 0.00 0.50 7.50 120.00 301.00 150.00 29.50 3.00 0.00 0.00 611.50
1955 0.00 0.00 0.00 0.00 6.00 43.00 248.50 194.00 39.50 0.00 0.00 0.00 531.00
1956 0.00 0.00 0.00 0.00 1.00 145.00 159.50 85.50 37.50 3.00 0.00 0.00 431.50
1957 0.00 0.00 0.00 0.00 0.00 67.00 206.00 150.00 3.50 0.50 0.00 0.00 427.00
1958 0.00 0.00 0.00 0.00 23.50 96.00 108.50 206.50 51.00 1.50 0.00 0.00 487.00
1959 0.00 0.00 0.00 0.00 0.00 120.50 190.00 196.00 23.50 0.00 0.00 0.00 530.00
1960 0.00 0.00 0.00 0.00 0.50 88.00 190.00 165.50 69.50 0.00 0.00 0.00 a 513.50
1961 0.00 0.00 0.00 0.00 15.50 73.00 154.00 155.50 5.50 0.00 0.00 0.00 z 403.50
1962 0.00 0.00 0.00 a 0.00 4.00 41.50 118.00 127.00 3.00 0.00 0.00 0.00 293.50
1963 0.00 0.00 0.00 0.00 1.00 100.00 260.50 130.00 26.00 0.00 0.00 0.00 517.50
1964 0.00 0.00 0.00 0.00 34.00 60.00 275.00 116.00 13.50 0.00 0.00 0.00 498.50
1965 0.00 0.00 0.00 0.00 0.50 25.50 178.00 86.00 1.00 0.00 0.00 0.00 291.00
1966 0.00 0.00 0.00 0.00 10.00 74.50 303.50 108.00 11.50 0.00 0.00 0.00 507.50
1967 0.00 0.00 0.00 0.00 9.50 9.50 156.50 110.50 3.50 4.00 0.00 0.00 293.50
1968 0.00 0.00 0.00 0.00 0.00 103.00 186.50 97.50 1.50 0.00 0.00 0.00 388.50
1969 0.00 0.00 0.00 0.00 12.00 25.00 231.00 204.50 11.00 0.00 0.00 0.00 483.50
1970 0.00 0.00 0.00 0.00 1.00 z 78.00 193.00 202.50 13.50 0.00 0.00 0.00 487.00
1971 0.00 0.00 0.00 0.00 0.00 119.50 149.50 168.00 23.50 0.00 0.00 0.00 460.50
1972 0.00 0.00 0.00 0.00 0.50 87.00 150.50 134.50 7.00 0.00 0.00 0.00 379.50
1973 0.00 0.00 0.00 0.00 z 6.00 107.50 144.50 192.50 4.00 0.00 0.00 0.00 454.50
1974 0.00 0.00 0.00 0.00 17.00 116.50 228.00 75.00 17.00 0.00 0.00 0.00 453.50
1975 0.00 0.00 0.00 0.00 0.00 52.00 206.50 144.50 21.00 0.00 0.00 0.00 424.00
1976 0.00 0.00 0.00 0.00 0.00 56.50 232.50 111.00 18.50 0.00 0.00 0.00 418.50
1977 0.00 0.00 0.00 0.00 4.00 187.00 246.50 115.00 49.00 0.00 0.00 0.00 601.50
1978 0.00 0.00 0.00 0.00 7.50 119.50 232.00 117.50 63.00 0.00 0.00 0.00 539.50
1979 0.00 0.00 0.00 0.00 a 1.00 81.50 214.00 101.50 51.50 0.00 0.00 0.00 449.50
1980 0.00 0.00 0.00 0.00 0.00 149.50 265.00 147.50 29.50 0.00 0.00 0.00 591.50
1981 0.00 0.00 0.00 0.50 1.50 149.50 227.50 121.00 34.50 0.00 0.00 0.00 534.50
1982 0.00 0.00 0.00 0.00 1.00 26.00 190.50 210.00 22.50 0.00 0.00 0.00 450.00
1983 0.00 0.00 0.00 0.00 7.50 54.00 214.00 272.00 46.50 0.00 0.00 0.00 594.00
1984 0.00 0.00 0.00 0.00 14.00 62.00 231.00 180.50 37.50 0.00 0.00 0.00 525.00
1985 0.00 0.00 0.00 0.00 5.50 94.00 196.00 150.00 26.50 0.00 0.00 0.00 472.00
1986 0.00 0.00 0.00 0.00 0.00 124.00 188.00 133.00 0.50 0.00 0.00 0.00 445.50
1987 0.00 0.00 0.00 0.00 4.00 87.00 220.50 137.50 10.50 0.00 0.00 0.00 459.50
1988 0.00 0.00 0.00 0.00 18.00 165.50 209.00 183.00 21.50 0.00 0.00 0.00 597.00
1989 0.00 0.00 0.00 3.50 15.50 66.00 242.50 108.00 29.50 2.00 0.00 0.00 467.00
1990 0.00 0.00 0.00 0.00 4.50 154.50 146.00 131.00 71.50 0.00 0.00 0.00 507.50
1991 0.00 0.00 0.00 0.00 10.00 78.00 183.00 145.50 22.00 2.00 0.00 0.00 440.50
1992 0.00 0.00 0.00 3.00 10.00 35.00 112.50 85.00 25.50 0.00 0.00 0.00 271.00
1993 0.00 0.00 0.00 0.00 2.00 59.50 151.00 96.00 7.50 0.00 0.00 0.00 316.00
1994 0.00 0.00 0.00 0.00 19.50 152.50 174.00 167.00 40.50 0.00 0.00 0.00 553.50
1995 0.00 0.00 0.00 0.00 0.00 44.00 169.00 253.50 56.50 0.00 0.00 0.00 523.00
1996 0.00 0.00 0.00 0.50 24.00 81.00 205.00 127.50 26.00 0.00 0.00 0.00 464.00
1997 0.00 0.00 0.00 0.00 3.50 96.00 200.00 135.50 49.50 2.50 0.00 0.00 487.00
1998 0.00 0.00 0.00 0.00 15.00 67.00 248.50 189.50 102.00 0.00 0.00 0.00 622.00
1999 0.00 0.00 0.00 0.00 0.00 68.00 256.50 169.50 9.00 0.00 0.00 0.00 503.00
2000 0.00 0.00 0.00 0.00 50.00 102.00 294.50 234.50 76.50 4.50 0.00 0.00 762.00
2001 0.00 0.00 0.00 0.00 2.50 138.50 296.00 212.00 50.00 2.00 0.00 0.00 701.00
2002 0.00 0.00 0.00 1.00 14.50 206.50 345.50 173.00 50.50 0.00 0.00 0.00 791.00
2003 0.00 0.00 0.00 0.00 29.00 34.50 364.50 253.00 16.50 0.00 0.00 0.00 697.50
2004 0.00 0.00 0.00 0.00 22.00 53.50 189.00 102.00 26.50 0.00 0.00 0.00 393.00
2005 0.00 0.00 0.00 0.00 27.00 109.00 321.50 164.00 59.00 0.50 0.00 0.00 681.00
2006 0.00 0.00 0.00 z 0.00 39.00 203.28 a 170.50 m 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 242.28
Period of Record Statistics
MEAN 0.00 0.00 0.00 0.08 5.98 73.69 181.30 132.49 24.01 0.33 0.00 0.00 415.62
S.D. 0.00 0.00 0.00 0.46 9.10 45.06 66.07 49.32 20.37 0.90 0.00 0.00 141.18
SKEW 0.00 0.00 0.00 6.43 2.33 0.73 0.18 0.35 1.07 2.89 0.00 0.00 0.10
MAX 0.00 0.00 0.00 3.50 50.00 206.50 364.50 272.00 102.00 4.50 0.00 0.00 791.00
MIN 0.00 0.00 0.00 0.00 0.00 2.00 50.00 12.50 0.00 0.00 0.00 0.00 72.50
NO YRS 107 107 106 106 105 107 106 106 105 106 106 105 101