GANN VALLEY 4 NW, SOUTH DAKOTA

Monthly Total Cooling Degree Days

(393217)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200905
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
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 153.60 e 18.00 0.00 0.00 171.60
1898 0.00 0.00 0.00 0.00 27.00 145.00 227.00 229.00 77.00 3.00 h 0.00 o 0.00 705.00
1899 0.00 0.00 0.00 z 0.00 z 37.00 h 155.00 304.50 301.50 60.00 4.00 0.00 0.00 825.00
1900 0.00 z 0.00 z 0.00 z 0.00 z 86.00 112.00 j 243.00 374.87 d 45.00 i 0.00 a 0.00 a 0.00 703.87
1901 0.00 0.00 a 0.00 z 0.00 z 45.50 o 157.50 502.50 302.00 55.20 e 0.00 d 0.00 f 0.00 a 1017.20
1902 0.00 0.00 b 0.00 6.00 34.44 d 62.00 279.50 189.00 24.50 0.00 0.00 0.00 595.44
1903 0.00 l 0.00 0.00 0.00 30.50 107.07 a 279.00 a 213.26 b 40.00 n 3.50 0.00 0.00 633.33
1904 0.00 a 0.00 0.00 a 0.00 17.00 103.00 183.50 190.50 98.00 1.00 0.00 0.00 593.00
1905 0.00 0.00 0.00 0.00 3.00 89.00 151.00 262.50 102.00 13.00 0.00 0.00 620.50
1906 0.00 0.00 0.00 3.00 52.00 69.50 191.00 0.00 z 93.00 0.00 z 0.00 z 0.00 a 408.50
1907 0.00 0.00 a 0.00 a 0.00 a 1.11 c 57.12 d 199.50 232.50 a 31.50 0.50 0.00 d 0.00 z 522.22
1908 0.00 z 0.00 0.00 9.50 8.00 0.00 z 367.00 179.44 e 220.86 a 4.00 0.00 0.00 b 788.80
1909 0.00 a 0.00 b 0.00 a 0.00 12.00 166.50 278.00 379.00 49.50 20.00 0.00 0.00 905.00
1910 0.00 0.00 a 3.50 13.50 5.50 207.00 315.00 190.00 91.50 40.00 0.00 z 0.00 a 866.00
1911 0.00 0.00 0.00 1.03 a 97.65 a 306.00 286.00 176.00 75.50 0.00 a 0.00 0.00 c 942.18
1912 0.00 c 0.00 h 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 j 0.00 z 0.00 z 0.00 z 4.50 s 87.86 b 252.50 321.50 78.50 0.00 0.00 0.00 e 740.36
1914 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
1915 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
1916 0.00 z 0.00 z 0.00 z 0.00 b 28.00 43.50 399.50 216.50 71.00 0.00 0.00 0.00 a 758.50
1917 0.00 0.00 0.00 0.00 15.00 91.50 332.00 164.50 34.50 0.00 0.00 0.00 637.50
1918 0.00 0.00 0.00 0.00 c 40.50 174.64 b 187.50 240.25 a 13.00 5.00 0.00 0.00 660.89
1919 0.00 0.00 0.00 0.50 33.00 212.00 339.50 212.87 a 106.50 4.00 0.00 0.00 908.37
1920 0.00 0.00 0.00 k 0.00 21.00 159.50 262.00 164.00 69.00 i 18.00 0.00 0.00 624.50
1921 0.00 0.00 0.00 0.00 a 43.50 327.50 369.50 235.50 47.50 0.00 0.00 c 0.00 1023.50
1922 0.00 0.00 e 0.00 0.00 13.50 145.50 169.00 307.50 130.34 a 27.50 0.00 0.00 793.34
1923 0.00 0.00 0.00 z 6.67 c 37.00 170.50 370.00 119.00 f 88.50 6.00 0.00 g 0.00 678.67
1924 0.00 0.00 0.00 8.50 8.00 80.50 240.50 228.00 52.00 40.00 0.00 0.00 657.50
1925 0.00 0.00 0.00 5.00 83.50 169.00 320.00 436.50 224.48 a 0.00 0.00 h 0.00 a 1238.48
1926 0.00 0.00 a 0.00 7.50 b 147.50 175.00 393.50 391.00 103.00 9.00 0.00 0.00 1226.50
1927 0.00 0.00 0.00 12.50 24.00 172.00 318.00 256.50 244.50 2.00 0.00 a 0.00 1029.50
1928 0.00 0.00 0.00 0.00 a 56.50 42.50 313.50 343.00 56.90 a 32.50 0.00 b 0.00 844.90
1929 0.00 0.00 a 0.00 0.00 36.50 154.50 412.00 389.00 74.00 0.50 0.00 0.00 1066.50
1930 0.00 0.00 0.00 5.00 20.15 a 134.50 f 514.00 373.50 112.00 23.50 0.00 0.00 a 1048.15
1931 0.00 0.00 0.00 a 5.50 68.00 384.50 479.50 368.50 260.50 13.00 0.00 0.00 1579.50
1932 0.00 a 0.00 0.00 0.00 68.00 182.50 424.50 382.00 101.50 5.17 a 0.00 0.00 a 1163.67
1933 0.00 0.00 0.00 0.00 28.00 486.50 501.00 258.50 207.93 a 6.50 0.00 0.00 1488.43
1934 0.00 0.00 a 0.00 17.00 263.50 290.50 495.50 340.50 43.00 12.50 0.00 0.00 1462.50
1935 0.00 0.00 0.00 0.00 0.00 129.50 570.00 424.00 158.50 3.00 0.00 0.00 1285.00
1936 0.00 0.00 0.00 1.50 84.50 285.50 694.00 506.50 175.50 0.00 0.00 0.00 1747.50
1937 0.00 0.00 0.00 0.00 33.50 192.00 455.50 457.50 133.00 5.00 0.00 0.00 1276.50
1938 0.00 0.00 0.00 0.00 6.00 73.00 371.50 512.00 112.00 33.50 0.00 a 0.00 1108.00
1939 0.00 0.00 0.00 8.00 70.00 196.00 426.00 301.50 154.14 a 0.00 0.00 0.00 1155.64
1940 0.00 0.00 0.00 0.00 31.50 253.00 504.35 e 274.00 148.50 4.50 0.00 0.00 1215.85
1941 0.00 0.00 0.00 e 0.00 86.00 195.50 399.90 a 324.50 88.50 0.00 0.00 0.00 1094.40
1942 0.00 z 0.00 0.00 16.00 17.50 91.00 235.50 232.00 53.00 10.00 0.00 0.00 655.00
1943 0.00 0.00 2.00 0.00 33.00 151.50 358.50 319.50 44.50 4.00 0.00 0.00 913.00
1944 0.00 0.00 0.00 0.00 100.50 105.00 181.00 185.50 24.00 1.00 0.00 0.00 597.00
1945 0.00 0.00 0.00 0.00 3.50 41.50 221.00 202.00 81.50 0.00 0.00 0.00 549.50
1946 0.00 0.00 4.00 2.50 11.50 181.50 275.00 157.50 46.00 0.00 0.00 0.00 678.00
1947 0.00 0.00 0.00 0.00 1.50 32.50 224.50 427.50 114.50 33.50 0.00 0.00 834.00
1948 0.00 0.00 0.00 8.00 42.00 122.50 306.38 a 251.50 111.50 0.50 0.00 0.00 842.38
1949 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 13.00 n 6.50 0.00 0.00 6.50
1950 0.00 0.00 0.00 0.00 9.00 133.00 128.50 109.50 33.00 0.00 0.00 0.00 413.00
1951 0.00 0.00 0.00 2.50 1.00 24.50 204.60 a 169.39 c 6.00 7.00 0.00 a 0.00 414.99
1952 0.00 0.00 0.00 0.00 k 17.05 a 194.50 315.00 232.00 147.50 0.00 0.00 0.00 906.05
1953 0.00 0.00 0.00 0.00 23.50 184.50 229.00 278.00 80.00 21.50 0.00 0.00 816.50
1954 0.00 0.00 0.00 a 2.00 24.50 105.50 354.00 225.00 42.00 0.00 0.00 0.00 753.00
1955 0.00 0.00 0.00 6.00 62.50 108.50 434.00 a 392.00 115.50 2.50 0.00 0.00 b 1121.00
1956 0.00 0.00 0.00 0.00 21.50 311.38 a 207.00 170.50 55.50 12.83 b 0.00 0.00 778.71
1957 0.00 0.00 0.00 a 0.00 8.50 51.50 357.57 b 270.00 23.50 3.21 b 0.00 0.00 714.28
1958 0.00 0.00 c 0.00 7.00 38.00 79.66 a 159.65 a 322.50 133.45 a 12.00 0.00 0.00 752.25
1959 0.00 0.00 0.00 0.00 38.50 261.50 304.00 355.50 62.50 0.00 0.00 0.00 1022.00
1960 0.00 0.00 0.00 0.50 10.69 b 51.50 331.00 263.50 128.50 4.00 0.00 0.00 789.69
1961 0.00 a 0.00 0.00 0.00 a 15.50 162.00 233.00 298.50 73.50 1.03 a 0.00 l 0.00 783.53
1962 0.00 0.00 0.00 5.00 14.00 71.50 160.50 166.50 14.00 4.28 b 0.00 0.00 c 435.78
1963 0.00 0.00 0.00 0.00 b 30.50 208.50 306.38 a 221.00 66.96 b 16.00 0.00 a 0.00 849.35
1964 0.00 0.00 0.00 0.50 66.50 151.50 401.50 193.50 61.55 a 3.00 0.00 0.00 878.05
1965 0.00 0.00 0.00 9.50 30.00 96.00 285.64 c 240.50 11.50 0.00 0.00 0.00 673.14
1966 0.00 0.00 0.00 0.00 19.50 173.50 440.00 169.50 43.50 0.00 0.00 0.00 846.00
1967 0.00 0.00 0.00 0.00 48.00 57.00 215.50 192.00 46.00 12.00 0.00 0.00 570.50
1968 0.00 0.00 0.00 0.00 14.43 b 161.25 b 269.50 203.50 39.50 7.50 0.00 0.00 a 695.68
1969 0.00 0.00 0.00 0.00 70.78 a 47.00 271.52 b 312.07 a 54.50 0.00 0.00 0.00 755.87
1970 0.00 0.00 0.00 0.00 29.50 190.00 356.50 318.50 160.00 7.00 0.00 0.00 1061.50
1971 0.00 0.00 0.00 1.50 0.00 244.50 219.50 336.00 98.50 2.00 0.00 0.00 902.00
1972 0.00 0.00 0.00 0.00 52.50 117.50 211.50 241.50 67.50 0.00 0.00 0.00 690.50
1973 0.00 0.00 0.00 0.00 11.00 134.50 283.50 389.00 32.50 4.00 0.00 0.00 854.50
1974 0.00 0.00 0.00 0.50 14.00 122.00 447.50 180.50 46.00 2.00 0.00 0.00 812.50
1975 0.00 0.00 0.00 7.00 33.00 125.00 423.00 305.00 47.00 26.50 0.00 0.00 966.50
1976 0.00 0.00 0.00 0.00 15.50 225.00 434.50 410.50 118.00 7.50 0.00 0.00 1211.00
1977 0.00 0.00 0.00 6.00 77.50 182.50 388.00 150.50 59.50 0.00 0.00 0.00 864.00
1978 0.00 0.00 0.00 0.00 21.00 181.00 292.50 297.00 204.00 0.00 0.00 0.00 995.50
1979 0.00 0.00 0.00 1.00 23.50 142.00 265.00 214.50 157.00 0.00 0.00 0.00 803.00
1980 0.00 0.00 0.00 31.00 67.00 220.50 417.00 308.00 102.00 10.50 0.00 0.00 1156.00
1981 0.00 0.00 0.00 5.00 12.00 145.00 350.50 255.00 105.50 0.00 0.00 0.00 873.00
1982 0.00 0.00 0.00 0.00 27.00 48.50 303.00 244.00 60.00 0.00 0.00 0.00 682.50
1983 0.00 0.00 0.00 0.00 11.00 97.50 333.00 429.50 128.50 2.00 0.00 0.00 1001.50
1984 0.00 0.00 0.00 0.00 23.50 132.00 272.50 329.00 60.50 4.50 0.00 0.00 822.00
1985 0.00 0.00 0.00 6.50 79.00 82.00 304.50 125.50 96.50 0.00 0.00 0.00 694.00
1986 0.00 0.00 0.00 2.50 27.00 197.00 321.50 188.00 18.50 0.00 0.00 0.00 754.50
1987 0.00 a 0.00 0.00 12.50 54.00 211.50 360.50 186.00 47.50 1.50 0.00 0.00 873.50
1988 0.00 0.00 0.00 0.50 55.50 313.00 335.00 337.50 66.50 0.00 0.00 0.00 1108.00
1989 0.00 0.00 0.00 11.00 25.00 122.50 372.50 291.00 91.50 15.50 0.00 0.00 929.00
1990 0.00 0.00 0.00 28.50 4.00 125.50 221.50 232.50 182.50 2.00 0.00 0.00 796.50
1991 0.00 0.00 0.00 3.00 37.00 164.50 248.00 251.00 79.00 2.00 0.00 0.00 784.50
1992 0.00 0.00 0.00 3.50 31.50 39.00 37.50 78.50 15.00 2.00 0.00 0.00 207.00
1993 0.00 0.00 0.00 0.00 2.50 34.00 81.50 144.00 9.50 1.00 0.00 0.00 272.50
1994 0.00 0.00 0.00 4.50 43.00 100.50 140.50 134.00 76.00 0.00 0.00 0.00 a 498.50
1995 0.00 0.00 0.00 0.00 0.00 123.50 231.00 270.50 61.00 0.00 0.00 0.00 686.00
1996 0.00 0.00 0.00 0.00 14.00 131.00 155.00 217.00 69.50 0.00 0.00 0.00 586.50
1997 0.00 0.00 0.00 0.00 7.50 116.00 246.50 159.00 61.00 17.50 0.00 0.00 607.50
1998 0.00 0.00 0.00 1.00 32.50 64.50 271.50 228.00 139.00 0.00 0.00 0.00 736.50
1999 0.00 a 0.00 0.00 0.00 16.00 86.90 a 296.64 b 209.00 19.14 a 0.00 0.00 0.00 627.67
2000 0.00 0.00 0.00 0.00 35.00 104.00 297.00 306.00 95.50 3.00 0.00 0.00 840.50
2001 0.00 0.00 0.00 9.64 b 16.00 147.50 337.00 297.00 80.00 2.00 0.00 0.00 889.14
2002 0.00 0.00 0.00 1.00 22.00 232.50 431.00 249.50 128.00 2.50 0.00 0.00 1066.50
2003 0.00 0.00 0.00 1.00 9.50 105.00 310.00 325.50 94.00 3.50 0.00 0.00 848.50
2004 0.00 0.00 0.00 0.00 27.00 57.50 235.00 114.50 117.00 0.00 0.00 0.00 551.00
2005 0.00 0.00 0.00 0.00 17.00 165.00 384.83 b 276.00 18.50 m 11.00 0.00 0.00 853.83
2006 0.00 0.00 0.00 3.00 51.50 201.50 462.50 288.50 26.50 11.00 0.00 0.00 1044.50
2007 0.00 0.00 0.00 4.50 28.50 160.50 358.50 0.00 z 113.00 8.00 0.00 0.00 673.00
2008 0.00 0.00 0.00 0.00 3.00 50.00 275.00 224.50 44.50 0.00 0.00 0.00 597.00
2009 0.00 0.00 0.00 0.00 29.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 29.50
Period of Record Statistics
MEAN 0.00 0.00 0.09 3.06 34.09 147.13 312.55 266.84 86.95 6.22 0.00 0.00 855.98
S.D. 0.00 0.00 0.56 5.46 34.82 80.32 107.35 89.03 53.89 9.16 0.00 0.00 272.23
SKEW 0.00 0.00 6.06 2.82 3.30 1.18 0.42 0.48 0.99 2.00 0.00 0.00 0.59
MAX 0.00 0.00 4.00 31.00 263.50 486.50 694.00 512.00 260.50 40.00 0.00 0.00 1747.50
MIN 0.00 0.00 0.00 0.00 0.00 24.50 37.50 78.50 6.00 0.00 0.00 0.00 207.00
NO YRS 104 105 101 103 105 104 107 104 104 107 102 108 87