GANN VALLEY 4 NW, SOUTH DAKOTA

Monthly Total Growing Degree Days

(393217)

Base Temperature = 50 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 548.40 e 155.00 1.00 0.00 704.40
1898 0.00 0.00 1.00 61.00 225.00 553.00 679.00 688.00 384.00 37.00 h 9.00 o 0.00 2591.00
1899 0.00 0.00 0.00 z 0.00 z 229.50 h 576.00 765.50 760.50 350.00 114.00 8.00 0.00 2574.00
1900 0.00 z 0.00 z 0.00 z 0.00 z 436.00 396.00 j 700.50 839.87 d 232.00 i 198.40 a 0.00 a 0.00 2174.77
1901 0.00 0.00 a 0.00 z 0.00 z 242.00 o 565.50 967.50 766.00 333.60 e 118.83 d 5.00 f 0.00 a 2751.43
1902 0.00 0.00 b 6.00 68.50 374.87 d 413.00 743.50 631.50 303.50 98.50 2.00 0.00 2641.37
1903 0.00 l 0.00 0.00 77.00 333.00 499.14 a 735.73 a 660.09 b 227.00 n 132.50 17.00 0.00 2454.46
1904 0.00 a 0.00 0.00 a 40.50 249.50 482.50 636.00 649.00 447.00 153.00 6.50 0.00 2664.00
1905 0.00 0.00 20.00 54.50 166.50 453.00 607.50 727.50 480.50 124.00 0.50 0.00 2634.00
1906 0.00 0.00 0.00 119.00 305.00 451.00 642.00 0.00 z 427.50 0.00 z 0.00 z 0.00 a 1944.50
1907 0.00 0.00 a 34.62 a 14.48 a 101.86 c 412.50 d 658.00 682.00 a 299.00 108.00 0.00 d 0.00 z 2310.46
1908 0.00 z 0.00 8.50 156.00 191.50 0.00 z 832.00 603.90 e 601.03 a 126.00 1.50 0.00 b 2520.44
1909 0.00 a 0.00 b 0.00 a 18.50 258.00 579.50 734.00 842.00 382.50 141.50 33.00 0.00 2989.00
1910 0.00 0.00 a 105.00 182.00 171.00 571.50 780.00 639.00 420.50 273.00 0.00 z 0.00 a 3142.00
1911 0.00 0.00 13.00 101.38 a 431.42 a 754.50 746.00 597.00 409.00 44.95 a 0.00 0.00 c 3097.25
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 92.50 s 444.11 b 712.50 786.50 370.50 66.00 1.00 0.00 e 2380.61
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 46.07 b 245.50 388.00 864.50 651.00 388.50 84.00 6.00 0.00 a 2673.57
1917 0.00 0.00 5.00 17.50 170.00 441.50 788.00 601.50 340.00 54.00 8.50 0.00 2426.00
1918 0.00 0.00 21.00 36.11 c 322.00 582.32 b 639.50 698.53 a 235.00 182.00 5.00 0.00 2721.47
1919 0.00 0.00 2.00 52.50 287.50 579.00 804.50 672.18 a 432.00 74.00 0.00 0.00 2903.68
1920 0.00 0.00 3.50 k 7.00 311.00 545.50 726.50 601.50 283.50 i 218.00 0.00 0.00 2409.50
1921 0.00 0.00 18.50 96.72 a 303.00 757.50 827.50 668.00 332.00 90.00 0.00 c 0.00 3093.22
1922 0.00 0.00 e 0.00 36.00 284.00 573.00 615.50 771.00 512.07 a 142.50 2.00 0.00 2936.07
1923 0.00 0.00 0.00 z 61.67 c 285.00 544.00 835.00 478.50 f 444.00 141.00 0.00 g 0.00 2310.67
1924 0.00 0.00 0.00 85.00 144.50 439.00 703.50 685.50 374.50 300.00 0.00 0.00 2732.00
1925 0.00 0.00 31.50 222.00 298.00 598.00 781.00 901.50 620.69 a 11.00 0.00 h 0.00 a 3463.69
1926 0.00 0.00 a 13.50 117.86 b 500.00 583.50 858.50 855.50 422.50 169.50 2.00 0.00 3522.86
1927 0.00 0.00 9.50 114.00 230.00 570.50 778.00 717.50 544.00 197.50 0.00 a 0.00 3161.00
1928 0.00 0.00 38.00 43.97 a 416.50 439.00 778.50 800.50 384.31 a 188.50 4.29 b 0.00 3093.56
1929 0.00 0.00 a 1.50 77.00 276.50 547.00 877.00 853.50 301.00 176.00 0.00 0.00 3109.50
1930 0.00 8.00 1.50 136.50 225.27 a 469.50 f 979.00 838.50 467.00 159.00 5.50 0.00 a 2820.27
1931 0.00 0.00 0.00 a 160.50 304.50 826.50 942.00 825.50 654.00 203.00 33.00 0.00 3949.00
1932 0.00 a 3.50 1.00 107.50 392.00 632.00 888.50 847.00 482.50 105.40 a 4.50 0.00 a 3463.90
1933 0.00 0.00 11.00 86.00 290.50 936.50 966.00 722.00 639.83 a 157.00 2.50 0.00 3811.33
1934 0.00 0.00 a 7.50 115.50 675.00 740.00 960.50 789.00 330.50 234.50 15.00 0.00 3867.50
1935 0.00 0.00 38.50 73.00 151.00 503.50 1035.00 860.50 544.00 131.00 0.00 0.00 3336.50
1936 0.00 0.00 0.00 68.00 438.50 695.00 1159.00 971.50 557.00 113.50 0.00 0.00 4002.50
1937 0.00 0.00 6.00 61.00 384.50 573.00 920.50 922.50 485.00 135.50 16.00 0.00 3504.00
1938 0.00 0.00 0.00 114.00 174.00 461.50 836.50 977.00 484.50 245.50 11.38 a 0.00 3304.38
1939 0.00 0.00 48.00 148.50 425.50 625.50 891.00 761.00 507.93 a 156.50 12.50 1.00 3577.43
1940 0.00 0.00 0.00 14.50 243.50 675.50 969.35 e 738.00 492.50 261.50 2.50 0.00 3397.35
1941 0.00 0.00 0.00 e 40.50 451.50 575.50 851.98 a 788.00 454.00 111.50 0.50 0.00 3273.48
1942 0.00 z 0.00 1.00 214.50 109.50 476.00 690.00 688.00 309.00 180.50 3.00 0.00 2671.50
1943 0.00 0.00 39.50 135.50 220.50 517.00 823.50 773.50 343.50 159.00 0.00 0.00 3012.00
1944 0.00 0.00 0.00 11.50 443.50 471.00 639.00 625.00 332.50 108.50 9.50 0.00 2640.50
1945 0.00 0.00 39.50 25.50 149.50 304.00 667.00 660.00 327.50 112.50 0.00 0.00 2285.50
1946 0.00 0.00 45.50 152.50 172.50 549.00 739.50 580.50 321.00 66.50 0.00 0.00 2627.00
1947 0.00 0.00 2.00 44.50 130.00 366.50 678.50 892.50 426.00 303.50 0.00 0.00 2843.50
1948 0.00 0.00 0.00 142.50 284.50 519.00 771.38 a 697.00 507.50 137.00 4.00 0.00 3062.88
1949 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 145.00 n 99.50 5.00 0.00 104.50
1950 0.00 0.00 0.00 23.50 191.00 517.00 583.50 538.50 298.00 141.50 1.50 0.00 2294.50
1951 0.00 0.00 0.00 60.00 235.00 339.50 634.47 a 609.48 c 238.50 115.50 0.00 a 0.00 2232.45
1952 0.00 0.00 0.00 41.50 k 252.13 a 632.00 776.00 692.00 488.50 54.00 0.00 0.00 2894.63
1953 0.00 0.00 3.50 33.50 254.50 590.50 689.00 739.00 417.50 255.00 20.00 0.00 3002.50
1954 0.00 0.00 0.00 a 113.50 217.50 481.00 818.50 690.00 383.00 61.50 9.00 0.00 2774.00
1955 0.00 0.00 3.50 176.50 401.50 464.00 899.00 a 854.50 433.00 133.00 0.00 0.00 b 3365.00
1956 0.00 0.00 0.00 17.00 292.50 750.52 a 670.00 609.50 361.00 227.69 b 0.00 0.00 2928.21
1957 0.00 0.00 0.00 a 79.00 188.00 441.50 822.57 b 721.50 305.00 108.50 b 0.00 0.00 2666.07
1958 0.00 1.68 c 0.00 58.00 353.00 415.86 a 613.80 a 778.50 511.55 a 171.00 0.50 0.00 2903.89
1959 0.00 0.00 2.50 80.00 259.50 686.00 764.00 820.00 344.00 26.50 0.00 0.00 2982.50
1960 0.00 0.00 0.00 67.00 208.98 b 432.00 789.50 723.00 414.50 139.00 3.00 0.00 2776.98
1961 0.00 a 0.00 9.50 31.55 a 197.00 565.50 695.50 763.50 285.00 116.77 a 0.00 l 0.00 2664.32
1962 0.00 0.00 0.00 87.00 307.50 458.00 599.50 609.00 267.00 126.14 b 4.50 0.00 c 2458.64
1963 0.00 0.00 35.50 54.64 b 284.50 648.00 771.38 a 673.00 446.79 b 306.50 1.03 a 0.00 3221.35
1964 0.00 0.00 0.00 91.50 366.50 546.00 866.50 601.50 341.38 a 112.00 10.50 0.00 2935.88
1965 0.00 0.00 0.00 76.50 302.00 524.50 750.64 c 688.00 135.00 128.50 3.00 0.00 2608.14
1966 0.00 0.00 13.50 32.00 236.00 557.50 905.00 596.00 312.00 66.00 1.00 0.00 2719.00
1967 0.00 0.00 33.00 68.50 217.50 456.00 647.00 636.00 402.50 121.00 0.00 0.00 2581.50
1968 0.00 0.00 34.50 52.00 155.00 b 553.93 b 721.00 647.00 334.00 106.50 0.00 0.00 a 2603.93
1969 0.00 0.00 0.00 99.00 358.05 a 398.50 736.52 b 777.07 a 414.50 37.50 2.50 0.00 2823.63
1970 0.00 0.00 0.00 62.00 333.50 615.00 816.00 783.50 455.50 118.50 0.00 0.00 3184.00
1971 0.00 0.00 5.00 120.00 202.00 680.50 662.00 799.00 389.50 127.00 0.00 0.00 2985.00
1972 0.00 0.00 0.00 25.50 302.50 532.50 660.00 679.00 397.00 78.00 0.00 0.00 2674.50
1973 0.00 0.00 0.00 62.00 249.50 565.50 748.50 854.00 326.00 179.00 2.50 0.00 2987.00
1974 0.00 0.00 7.00 96.00 216.50 506.50 912.50 614.50 319.50 152.00 0.00 0.00 2824.50
1975 0.00 0.00 0.00 60.00 322.00 521.00 884.00 769.00 323.00 181.50 21.00 0.00 3081.50
1976 0.00 0.00 31.00 107.50 315.00 656.50 899.50 875.50 455.50 112.00 0.00 0.00 3452.50
1977 0.00 0.00 11.00 185.50 485.00 632.00 853.00 606.00 400.00 61.50 3.00 0.00 3237.00
1978 0.00 0.00 21.50 45.00 280.50 580.50 755.00 748.00 590.50 129.00 24.50 0.00 3174.50
1979 0.00 0.00 8.50 77.50 215.00 550.00 728.50 659.50 554.50 113.00 0.00 0.00 2906.50
1980 0.00 0.00 0.50 150.50 384.50 658.50 882.00 765.00 472.50 129.50 7.50 0.00 3450.50
1981 0.00 0.00 8.00 175.00 234.50 573.50 808.50 718.50 487.00 91.50 15.00 0.00 3111.50
1982 0.00 0.00 0.00 73.50 328.00 415.50 768.00 689.50 338.00 65.00 0.00 0.00 2677.50
1983 0.00 0.00 0.00 20.50 161.00 456.50 792.00 894.50 447.50 97.00 4.00 0.00 2873.00
1984 0.00 0.00 0.00 2.50 239.50 550.00 733.50 794.00 330.50 147.50 3.50 0.00 2801.00
1985 0.00 0.00 1.00 162.50 439.00 426.50 764.00 550.50 340.50 63.50 6.00 0.00 2753.50
1986 0.00 0.00 42.50 56.50 312.50 638.00 786.50 622.50 293.50 88.00 0.00 0.00 2840.00
1987 0.00 a 0.00 8.00 148.50 395.50 636.50 818.50 582.50 382.50 54.00 9.50 0.00 3035.50
1988 0.00 0.00 10.00 62.00 361.00 759.50 789.00 790.50 382.50 56.00 0.00 0.00 3210.50
1989 0.00 0.00 5.00 128.00 291.50 496.50 831.50 749.50 394.00 147.50 4.50 0.00 3048.00
1990 0.00 0.00 4.00 131.50 206.00 529.00 671.00 689.00 515.00 85.50 20.50 0.00 2851.50
1991 0.00 0.00 4.00 76.00 322.00 602.00 708.50 714.00 352.50 78.50 0.00 0.00 2857.50
1992 0.00 0.00 0.00 44.00 260.00 396.00 418.00 440.50 268.00 111.00 0.00 0.00 1937.50
1993 0.00 0.00 7.00 16.00 173.50 341.50 515.00 563.00 156.50 51.00 0.00 0.00 1823.50
1994 0.00 0.00 6.00 58.50 313.50 505.50 576.50 558.00 362.00 81.00 2.00 0.00 a 2463.00
1995 0.00 0.00 7.00 0.00 102.50 488.00 678.50 724.00 319.50 54.50 0.00 0.00 2374.00
1996 0.00 0.00 0.00 26.00 169.50 522.50 603.00 681.00 307.50 82.00 0.00 0.00 2391.50
1997 0.00 0.00 13.50 31.00 156.50 540.50 683.00 601.50 380.00 161.00 0.00 0.00 2567.00
1998 0.00 0.00 11.00 57.50 326.50 383.50 734.00 693.00 527.50 55.50 0.00 0.00 2788.50
1999 0.00 a 0.00 11.00 42.00 224.50 459.83 a 751.48 b 662.50 243.10 a 54.00 23.50 0.00 2471.91
2000 0.00 0.00 18.00 64.50 301.50 452.00 747.50 764.50 421.00 116.00 4.50 0.00 2889.50
2001 0.00 0.00 0.00 80.36 b 265.50 513.50 790.00 754.00 381.00 72.00 30.50 0.00 2886.86
2002 0.00 0.00 0.00 73.50 170.00 654.50 892.50 688.00 417.00 33.00 0.00 0.00 2928.50
2003 0.00 0.00 20.00 112.50 195.00 469.00 775.00 776.50 392.50 187.00 1.50 0.00 2929.00
2004 0.00 0.00 23.00 69.50 263.50 390.50 677.50 508.50 443.50 90.00 1.00 0.00 2467.00
2005 0.00 0.00 7.50 82.00 219.50 574.00 845.55 b 730.50 216.50 m 109.00 16.00 0.00 2584.05
2006 0.00 0.00 2.00 127.50 275.50 624.50 927.50 748.00 238.00 111.50 14.50 0.00 3069.00
2007 0.00 0.00 31.00 86.50 344.00 578.00 820.50 0.00 z 412.00 92.50 1.50 0.00 2366.00
2008 0.00 0.00 1.00 23.50 160.50 445.50 731.50 688.50 356.50 71.00 25.50 0.00 2503.50
2009 0.00 0.00 2.50 51.50 254.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 308.50
Period of Record Statistics
MEAN 0.00 0.13 10.22 78.96 276.51 540.08 770.26 717.35 398.64 126.20 5.11 0.01 2920.34
S.D. 0.00 0.86 15.98 49.16 97.65 108.61 114.47 101.52 97.98 61.10 7.86 0.10 404.67
SKEW 0.00 7.98 2.76 0.73 0.85 0.65 0.19 0.15 0.22 0.89 1.93 10.25 0.23
MAX 0.00 8.00 105.00 222.00 675.00 936.50 1159.00 977.00 654.00 306.50 33.00 1.00 4002.50
MIN 0.00 0.00 0.00 0.00 101.86 304.00 418.00 440.50 135.00 11.00 0.00 0.00 1823.50
NO YRS 104 105 101 103 105 104 107 104 104 107 102 108 87