COLUMBIA 8 N, SOUTH DAKOTA

Monthly Total Growing Degree Days

(391873)

Base Temperature = 40 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
1949 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 198.00 q 211.00 g 65.00 0.00 65.00
1950 0.00 0.00 4.50 60.56 c 417.98 a 778.97 a 856.93 c 827.70 a 604.00 278.45 c 16.61 b 0.00 a 3845.69
1951 0.00 a 0.00 a 0.00 a 139.82 b 560.00 615.54 b 906.00 823.64 b 505.00 c 240.77 a 1.00 0.00 e 3791.76
1952 0.00 e 0.00 b 0.00 b 282.00 504.86 c 864.11 b 983.98 b 943.00 717.00 169.98 a 33.62 a 0.00 f 4498.55
1953 0.00 a 0.00 b 14.98 a 83.04 b 478.50 695.00 f 947.50 985.00 625.00 437.10 a 60.00 c 0.00 a 3631.12
1954 0.00 b 3.77 b 0.00 d 215.00 349.30 c 745.86 a 1079.46 c 919.15 a 394.00 j 160.00 h 37.78 c 0.00 d 3350.33
1955 0.00 a 0.00 d 11.50 f 382.22 c 690.02 b 742.50 1098.43 a 1033.85 a 487.50 f 305.98 d 4.50 0.00 e 4257.50
1956 0.00 e 0.00 7.00 51.50 524.93 a 968.79 a 912.00 936.00 556.50 370.28 d 25.00 3.10 a 4355.10
1957 0.00 0.00 b 4.50 231.00 471.50 715.00 1124.78 a 939.82 a 525.00 a 268.15 a 6.00 0.00 4285.75
1958 0.00 20.50 11.50 210.00 e 596.20 c 620.69 a 878.85 a 1019.38 a 713.00 294.50 d 35.69 a 0.00 4400.31
1959 0.00 b 0.00 27.00 217.24 a 503.75 c 929.00 1024.00 1074.67 a 425.50 f 103.00 f 0.00 b 0.00 h 3775.66
1960 0.00 a 0.00 0.00 182.00 510.50 718.00 1032.50 973.00 639.00 282.00 6.50 0.00 d 4343.50
1961 0.00 b 0.00 32.50 92.07 a 412.50 871.50 914.00 1027.98 c 320.00 h 182.50 i 12.41 a 0.00 i 3362.96
1962 0.00 g 0.00 c 0.00 211.55 a 560.00 768.62 a 865.42 a 497.00 o 150.50 u 305.98 d 13.27 d 5.74 d 2730.58
1963 0.00 b 0.00 a 112.38 c 233.00 508.00 888.50 690.00 i 643.50 i 668.00 513.00 26.00 0.00 2948.88
1964 0.00 0.00 2.00 241.00 571.12 e 615.00 h 1077.50 872.00 563.50 287.27 a 61.50 0.00 3675.88
1965 0.00 0.00 0.00 149.50 538.00 769.00 980.00 944.50 335.36 b 344.00 37.00 0.00 4097.36
1966 0.00 a 0.00 58.00 67.76 a 439.50 775.00 1125.00 885.16 c 484.00 g 239.45 b 0.00 c 0.00 f 3589.87
1967 0.00 g 0.00 i 78.57 b 134.00 g 344.00 f 763.27 d 752.00 g 900.72 d 477.00 i 56.50 q 17.50 0.00 1760.06
1968 0.00 0.00 114.50 203.50 384.50 787.50 947.00 915.50 614.00 259.00 16.00 0.00 4241.50
1969 0.00 0.00 0.00 239.50 597.50 619.50 956.00 1052.00 683.00 162.00 43.50 1.50 4354.50
1970 0.00 0.00 0.00 152.00 557.50 904.00 1053.50 1014.00 686.50 266.00 0.00 0.00 4633.50
1971 0.00 0.00 27.00 282.00 460.00 871.50 889.50 639.50 k 623.50 316.00 9.00 0.00 3478.50
1972 0.00 0.00 7.00 129.00 614.00 798.00 913.00 983.50 607.00 229.00 2.50 0.00 4283.00
1973 0.00 0.00 25.00 191.00 530.00 852.50 996.00 1081.12 c 412.50 g 367.57 c 10.18 b 0.00 4053.37
1974 0.00 0.00 12.50 212.50 466.50 776.50 1140.00 873.68 a 550.00 339.50 28.00 0.00 z 4399.18
1975 0.00 n 0.00 k 5.00 i 57.00 g 380.00 i 777.12 d 1109.50 927.50 520.18 b 308.00 92.00 0.00 3734.29
1976 0.00 0.00 33.14 b 250.50 0.00 z 888.00 1092.75 a 1058.81 b 657.50 212.00 12.00 x 0.00 f 4192.70
1977 0.00 c 1.04 a 35.00 407.50 796.04 c 841.50 1078.80 a 800.32 a 390.00 j 124.50 q 24.50 k 0.00 m 3960.19
1978 0.00 r 0.00 n 22.00 m 82.00 n 370.50 m 504.50 k 988.42 e 1004.50 794.50 280.50 72.50 0.00 3140.42
1979 0.00 0.00 0.00 93.00 387.00 775.00 970.00 840.88 c 717.00 229.00 5.50 6.00 4023.38
1980 0.00 c 0.00 0.00 269.00 653.00 807.00 1033.50 918.78 b 635.50 240.00 41.90 a 0.00 4598.67
1981 1.00 19.00 53.00 285.50 490.50 735.50 1008.00 936.00 593.50 232.50 86.50 0.00 4441.00
1982 0.00 0.00 7.50 182.50 528.50 655.50 1058.00 926.50 551.00 197.50 3.50 2.50 4113.00
1983 0.00 1.00 7.50 110.00 395.50 760.00 1082.00 1098.50 560.00 175.00 31.00 0.00 4220.50
1984 0.00 0.00 1.00 121.00 414.50 749.00 958.50 981.50 406.00 273.50 9.00 0.00 a 3914.00
1985 0.00 2.00 20.50 286.00 647.00 637.50 944.00 759.00 417.50 169.00 2.00 0.00 3884.50
1986 0.00 f 0.00 67.00 136.50 543.00 796.50 952.50 805.47 b 469.50 239.50 5.00 0.00 4014.97
1987 2.00 0.00 25.32 a 400.86 a 687.68 a 894.00 1069.00 807.50 594.50 151.50 35.00 0.00 4667.36
1988 0.00 0.00 20.50 215.50 700.50 1036.50 1071.00 946.00 517.00 148.50 2.50 0.00 4658.00
1989 0.00 0.00 3.50 175.50 564.00 769.50 1090.00 946.00 537.50 246.00 8.50 0.00 4340.50
1990 0.00 0.00 24.50 209.50 435.00 767.50 906.50 897.50 644.00 160.00 45.50 0.00 4090.00
1991 0.00 0.52 a 20.50 267.00 602.00 866.50 932.00 965.50 564.50 220.50 2.00 0.00 4441.02
1992 0.00 5.00 19.50 141.50 584.50 685.50 724.50 763.00 506.50 220.50 0.00 a 0.00 3650.50
1993 0.00 0.00 23.00 106.00 468.50 617.00 798.00 844.00 399.50 166.00 0.00 0.00 3422.00
1994 0.00 0.00 12.00 166.00 634.00 816.50 855.00 795.50 600.50 263.50 28.00 0.00 4171.00
1995 0.00 0.00 20.00 56.00 413.00 839.00 944.50 983.00 532.50 172.50 4.50 0.00 3965.00
1996 0.00 0.00 a 0.00 74.00 391.50 804.00 872.00 931.00 569.50 189.50 1.00 0.00 3832.50
1997 0.00 0.00 4.00 128.50 396.00 844.50 944.00 880.00 647.00 311.50 6.50 0.00 4162.00
1998 0.00 0.00 13.50 272.50 619.00 685.00 1004.00 945.00 708.50 211.00 7.50 3.00 4469.00
1999 0.00 5.50 36.00 204.50 546.50 756.50 985.50 896.50 473.00 174.50 93.00 5.50 4177.00
2000 0.00 2.50 81.50 159.50 540.50 728.50 958.50 909.00 561.00 299.50 21.50 0.00 4262.00
2001 0.00 a 0.00 0.00 193.00 604.00 814.00 1029.50 972.50 605.00 0.00 z 125.00 0.00 4343.00
2002 0.00 0.50 0.00 166.50 388.50 933.50 1086.00 900.00 661.00 78.50 11.00 0.00 4225.50
2003 0.00 0.00 55.50 221.50 462.00 742.50 970.50 1004.00 537.00 326.00 13.50 0.00 4332.50
2004 0.00 0.00 43.00 172.00 413.00 646.50 881.50 714.00 624.00 237.00 23.50 0.00 3754.50
2005 0.00 0.00 30.50 247.00 424.50 837.50 971.50 851.00 698.00 263.50 49.00 0.00 4372.50
2006 0.00 0.00 19.50 279.00 518.00 792.00 1093.50 944.00 464.00 191.50 46.50 0.00 4348.00
2007 0.00 0.00 62.00 234.50 644.00 854.50 1056.50 861.00 607.00 285.00 35.00 0.00 4639.50
2008 0.00 0.00 1.50 98.00 429.50 737.00 1007.50 943.50 605.50 211.00 59.50 0.00 4093.00
2009 0.00 0.00 18.50 162.00 475.00 699.00 837.00 832.50 701.50 84.00 50.00 0.00 3859.50
2010 0.00 0.00 27.00 334.00 515.50 821.50 1015.50 1022.00 527.00 338.00 51.50 0.00 4652.00
2011 0.00 0.00 0.00 125.50 445.50 766.00 1119.50 944.00 586.00 345.50 17.50 0.00 4349.50
2012 4.00 0.00 208.96 d 232.80 e 585.50 874.00 1130.50 879.00 567.50 177.00 7.50 0.00 4666.76
2013 0.00 0.00 0.00 m 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 0.12 1.01 25.56 194.05 518.46 786.58 989.03 924.34 584.75 250.96 26.81 0.48 4219.26
S.D. 0.59 3.66 36.01 82.39 96.00 89.52 92.11 84.38 90.51 79.55 27.60 1.42 299.40
SKEW 5.57 4.60 2.82 0.44 0.46 0.12 -0.39 -0.18 -0.36 0.53 1.36 3.00 -0.47
MAX 4.00 20.50 208.96 407.50 796.04 1036.50 1140.00 1098.50 794.50 513.00 125.00 6.00 4667.36
MIN 0.00 0.00 0.00 51.50 349.30 615.54 724.50 714.00 335.36 78.50 0.00 0.00 3422.00
NO YRS 59 61 60 60 59 60 61 60 54 57 62 57 43