FLANDREAU, SOUTH DAKOTA

Monthly Total Growing Degree Days

(392984)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1893 0.00 0.00 39.00 95.50 434.00 877.50 960.00 858.50 655.86 a 218.03 a 65.00 0.00 4203.40
1894 0.00 0.00 74.50 282.50 613.50 979.50 1149.50 994.50 687.50 280.00 4.00 1.50 5067.00
1895 0.00 12.00 42.50 456.00 550.50 742.00 922.00 907.00 730.00 196.50 27.50 0.00 4586.00
1896 0.00 9.50 3.00 310.00 678.50 769.00 888.50 924.00 519.50 211.12 b 0.00 0.00 4313.12
1897 0.00 0.00 19.00 184.00 534.00 691.50 958.50 738.00 871.00 344.00 45.00 0.00 4385.00
1898 0.00 0.00 39.00 215.50 514.00 811.00 952.50 933.50 697.00 201.50 25.50 0.00 4389.50
1899 0.00 2.00 0.00 275.00 543.50 796.00 971.00 1000.00 604.00 358.00 94.50 2.00 4646.00
1900 7.00 0.00 z 31.50 349.00 655.00 827.50 886.60 a 1049.00 601.50 490.50 21.00 0.00 4918.60
1901 0.00 a 0.00 10.33 a 281.00 535.00 756.50 1134.50 978.50 545.00 334.00 13.00 0.00 4587.83
1902 1.00 3.00 86.00 200.00 581.50 624.00 905.00 797.50 465.50 311.00 24.50 0.00 3999.00
1903 0.00 0.00 16.00 200.50 507.50 640.50 848.00 778.50 514.50 314.00 57.00 0.00 3876.50
1904 0.00 0.00 9.50 115.50 511.50 690.00 791.02 a 791.50 542.00 313.50 103.50 0.00 3868.02
1905 0.00 0.00 95.50 171.00 412.50 748.00 809.50 954.50 713.00 241.50 35.00 0.00 4180.50
1906 0.00 10.50 3.50 275.00 530.50 674.50 821.00 908.50 687.00 277.50 31.00 0.00 4219.00
1907 0.00 a 0.00 a 84.50 52.00 249.50 699.50 865.00 867.50 537.00 231.47 a 20.50 0.00 c 3606.97
1908 0.00 c 0.00 11.62 c 283.00 466.50 664.00 883.00 789.00 788.50 271.50 54.50 0.00 4211.62
1909 0.00 0.00 4.50 52.50 487.50 729.50 874.50 1049.19 b 590.50 261.50 102.00 1.00 f 4151.69
1910 0.00 0.00 282.00 375.50 438.02 d 797.59 a 983.06 e 853.00 626.00 459.00 0.00 z 0.00 4814.16
1911 0.00 0.00 100.00 216.72 a 675.59 b 1010.00 954.50 811.00 612.32 b 201.50 1.00 0.00 4582.63
1912 0.00 0.00 b 6.00 281.90 a 529.00 698.00 946.50 859.00 518.00 336.50 51.00 0.00 4225.90
1913 0.00 6.00 27.00 263.50 464.00 868.00 922.25 a 1013.50 678.00 0.00 z 0.00 z 0.00 z 4242.25
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 k 443.50 363.50 657.00 797.00 717.50 554.50 328.00 77.14 b 0.00 3938.14
1916 0.00 0.00 26.50 160.00 507.50 659.50 1150.00 947.50 595.50 234.50 54.50 1.50 4337.00
1917 0.00 0.00 14.00 78.50 383.50 689.48 a 1005.95 a 847.00 572.00 123.50 101.50 0.00 3815.43
1918 0.00 0.50 120.38 a 107.00 631.50 828.00 931.50 955.32 a 460.00 366.00 90.00 b 0.00 4490.20
1919 0.00 c 0.00 e 34.00 167.00 487.45 b 853.45 a 1032.96 c 949.12 a 706.07 b 187.50 4.50 0.00 4422.05
1920 0.00 0.00 77.00 52.50 521.00 789.50 937.00 844.00 701.50 458.00 3.75 b 0.00 4384.25
1921 0.00 d 19.50 87.50 299.50 552.50 973.00 1077.50 902.10 a 687.41 a 381.54 e 13.97 a 6.00 5000.52
1922 0.00 a 0.00 13.50 211.61 b 615.35 a 888.62 a 888.50 1005.95 a 766.50 371.50 51.43 b 9.00 4821.96
1923 0.00 a 0.00 a 9.50 215.00 540.50 843.46 d 0.00 z 839.07 a 0.00 z 274.50 g 108.89 c 0.00 z 2556.42
1924 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 839.00 870.98 e 331.50 i 582.50 83.79 a 0.00 2376.27
1925 0.00 0.00 96.50 417.41 a 479.00 776.00 921.50 991.00 783.50 70.50 14.00 0.50 4549.91
1926 0.00 0.00 a 46.50 253.50 725.00 721.00 1000.00 933.50 568.00 290.00 19.00 0.00 4556.50
1927 0.00 0.00 30.00 196.50 407.50 694.00 821.50 808.67 b 653.00 351.50 18.50 0.00 3981.17
1928 0.00 0.00 a 50.00 79.50 517.50 489.50 807.50 915.53 a 630.50 338.00 25.50 0.00 e 3853.53
1929 0.00 0.00 b 44.00 230.50 431.00 747.00 1002.00 978.00 512.59 a 327.00 5.40 e 0.00 a 4277.49
1930 0.00 a 39.50 35.00 311.50 533.00 768.00 1166.50 1064.00 674.00 324.50 95.00 0.00 5011.00
1931 0.00 z 0.00 z 0.00 z 309.50 509.00 1006.00 1088.50 968.50 838.50 368.50 92.00 0.00 5180.50
1932 0.00 10.00 10.00 226.00 596.00 867.50 1032.00 931.00 580.00 197.50 22.00 0.00 4472.00
1933 0.00 4.00 34.00 190.50 478.50 1052.50 1023.50 875.50 771.50 253.50 23.00 1.50 4708.00
1934 2.00 0.00 31.00 209.00 900.50 916.55 a 1073.00 894.50 461.00 408.00 48.50 0.00 4944.05
1935 0.00 0.00 78.00 166.50 376.00 680.50 1178.00 925.00 648.00 217.50 6.50 0.00 4276.00
1936 0.00 0.00 15.00 156.50 675.50 779.50 1241.50 1054.00 765.50 269.50 16.00 0.00 4973.00
1937 0.00 0.00 a 12.50 168.50 606.57 a 732.50 1076.50 1142.50 683.50 248.00 56.50 0.00 4727.07
1938 0.00 0.00 75.00 310.00 487.50 831.50 1040.50 1081.38 a 704.00 33.00 z 51.00 0.00 4580.88
1939 0.00 0.00 111.50 224.50 767.50 848.00 1060.50 935.50 778.00 289.00 42.50 20.00 5077.00
1940 0.00 0.00 4.00 150.00 523.00 840.50 1124.50 882.00 798.00 504.50 32.50 0.00 4859.00
1941 0.00 0.00 10.50 307.50 729.50 829.50 1056.58 a 1052.00 721.50 360.50 50.50 23.00 5141.08
1942 2.00 0.00 28.50 397.00 439.50 785.89 b 960.00 941.00 509.00 361.00 44.00 0.00 4467.89
1943 0.00 4.50 91.50 248.00 440.00 839.50 1027.00 964.50 531.00 324.00 6.50 0.00 4476.50
1944 7.00 0.00 0.00 102.00 697.00 828.00 924.00 896.50 615.50 331.00 62.00 0.00 4463.00
1945 0.00 0.00 162.50 162.50 380.50 616.00 935.00 943.50 575.50 327.50 26.50 0.00 4129.50
1946 0.00 0.00 195.50 360.00 446.00 821.50 982.00 844.50 549.00 239.50 10.00 1.00 4449.00
1947 5.00 0.00 14.50 112.50 392.50 696.72 a 964.00 1138.50 672.50 506.50 28.00 0.00 4530.72
1948 0.00 0.00 35.00 336.00 516.50 739.00 980.50 936.00 774.00 293.50 56.00 0.00 4666.50
1949 0.00 0.00 4.00 237.00 654.00 855.50 1047.00 1003.00 521.00 332.00 91.00 0.00 4744.50
1950 0.00 0.00 13.00 73.00 407.50 799.50 852.50 819.50 631.50 383.50 32.50 0.00 4012.50
1951 0.00 a 6.00 0.00 117.00 431.00 g 659.48 a 922.50 867.50 467.50 281.50 8.00 2.50 3331.98
1952 0.00 0.00 0.00 289.50 524.50 895.50 1012.50 916.50 690.50 210.50 65.50 0.00 e 4605.00
1953 0.00 0.00 27.38 a 98.50 515.50 871.50 980.00 987.00 626.50 462.50 90.00 0.00 b 4658.88
1954 0.00 a 8.50 0.50 291.50 407.00 839.00 1085.50 939.50 643.50 220.00 99.50 0.00 4534.50
1955 0.00 a 0.00 33.50 429.00 707.50 754.00 1166.50 1114.00 681.00 373.03 a 10.00 0.00 5268.53
1956 0.00 0.00 12.00 89.50 593.50 989.50 916.00 942.50 624.00 512.00 44.00 0.00 4723.00
1957 0.00 0.00 9.30 a 258.50 491.00 752.00 1161.00 949.00 549.50 280.50 17.50 0.00 4468.30
1958 0.00 19.00 13.00 193.00 659.50 573.00 f 903.00 1028.00 713.00 370.50 55.00 0.00 3954.00
1959 0.00 0.00 30.50 216.50 558.00 932.00 1004.50 1075.00 613.97 a 143.50 6.50 6.00 4586.47
1960 0.00 0.00 a 0.00 232.00 528.60 b 745.50 1016.50 366.50 t 645.50 317.00 45.00 0.00 3530.10
1961 0.00 0.00 32.00 108.21 b 433.00 665.50 f 947.50 1012.50 583.50 333.50 19.50 0.50 3470.21
1962 0.00 1.00 0.00 226.50 647.79 b 793.00 927.50 961.00 558.00 391.50 55.00 c 33.58 a 4594.88
1963 0.00 0.50 128.50 289.50 563.50 953.50 1041.00 947.50 709.50 571.00 46.50 0.00 5251.00
1964 0.00 0.00 4.00 268.97 a 453.00 j 879.00 1117.50 839.50 594.50 293.00 105.50 0.00 4101.97
1965 0.00 0.00 0.00 173.50 622.00 814.50 983.50 911.50 387.00 362.50 45.50 0.00 4300.00
1966 0.00 0.00 95.50 99.50 481.00 838.00 1161.00 866.50 601.50 240.00 11.00 0.00 4394.00
1967 0.00 0.00 98.68 a 186.00 399.50 744.00 911.50 846.00 566.00 243.50 14.00 0.00 4009.18
1968 0.00 0.00 135.00 222.93 a 366.50 812.00 915.50 903.00 543.50 268.50 31.50 0.00 a 4198.43
1969 0.00 0.00 0.00 196.07 b 580.50 585.50 965.50 957.50 613.50 161.00 31.00 0.00 4090.57
1970 0.00 0.00 0.00 173.50 553.00 847.00 1000.50 933.00 593.00 235.00 4.50 2.50 4342.00
1971 0.00 0.00 25.00 257.00 437.50 902.00 839.50 912.50 574.00 340.50 26.50 0.00 4314.50
1972 0.00 0.00 8.00 106.50 586.00 771.50 879.50 896.50 520.50 176.00 10.00 0.00 3954.50
1973 0.00 0.00 a 43.00 165.00 448.50 827.00 952.00 1014.50 548.50 376.00 23.00 0.00 4397.50
1974 0.00 0.00 18.50 206.50 434.00 741.00 1106.50 806.00 462.00 280.50 28.00 0.00 4083.00
1975 0.00 0.00 6.50 95.50 595.50 761.50 1070.00 943.50 480.50 322.00 112.24 a 0.00 4387.24
1976 0.00 8.00 68.00 308.50 471.00 885.50 1058.50 1007.00 614.00 190.00 10.50 0.00 4621.00
1977 0.00 0.00 48.05 a 0.00 z 787.50 832.50 1020.00 765.18 a 607.00 188.50 53.50 0.00 4302.23
1978 0.00 0.00 45.00 166.00 559.00 780.50 926.50 938.00 777.78 c 217.00 57.93 a 0.00 4467.71
1979 0.00 0.00 a 0.00 146.00 381.50 775.00 978.00 829.50 650.50 215.50 17.00 0.00 3993.00
1980 0.00 0.00 a 15.50 259.50 576.08 a 841.50 1006.00 912.50 617.00 219.50 46.00 0.00 a 4493.58
1981 2.00 35.50 67.00 337.50 476.00 798.00 984.00 886.50 608.50 226.00 87.00 0.00 4508.00
1982 0.00 0.00 8.50 193.50 589.50 647.50 1015.00 897.00 565.00 244.50 12.00 6.00 4178.50
1983 0.00 0.00 27.00 105.00 427.00 744.00 1098.43 a 1106.00 602.00 234.50 61.50 0.00 4405.43
1984 0.00 0.00 0.00 145.00 440.00 825.00 963.50 983.00 456.00 283.00 34.00 0.00 4129.50
1985 0.00 0.00 38.50 318.00 616.50 657.50 902.00 750.00 511.00 154.50 6.50 0.00 3954.50
1986 0.00 0.00 61.50 199.50 522.00 842.50 1000.50 740.00 535.50 243.00 6.50 0.00 4151.00
1987 0.00 1.50 44.00 340.50 670.00 881.50 1037.50 812.00 590.00 143.00 71.00 0.00 4591.00
1988 0.00 0.00 39.00 156.50 711.00 1005.50 1020.50 946.00 572.50 142.50 23.50 0.00 a 4617.00
1989 0.00 0.00 42.50 221.50 508.50 758.50 1032.00 883.50 558.00 286.50 6.50 0.00 4297.50
1990 2.00 0.00 42.00 218.00 433.50 823.00 879.50 874.50 694.00 184.00 60.00 0.00 4210.50
1991 0.00 2.00 47.50 258.00 601.00 943.50 944.50 930.50 573.50 235.50 0.00 0.00 4536.00
1992 0.00 1.50 31.50 107.50 578.50 709.50 707.50 702.50 521.50 240.50 0.50 0.00 3601.00
1993 0.00 0.00 6.00 109.00 460.00 665.00 892.50 881.50 429.50 219.50 2.50 0.00 3665.50
1994 0.00 a 0.00 34.00 191.00 623.00 832.50 850.00 806.50 642.50 300.50 31.00 0.00 4311.00
1995 0.00 0.00 63.00 64.00 399.50 817.00 962.50 985.50 512.50 203.50 0.00 0.00 4007.50
1996 0.00 3.50 14.00 96.50 385.50 810.00 0.00 z 879.50 529.00 258.50 14.00 0.00 2990.50
1997 0.00 0.00 14.00 159.00 349.00 848.50 949.50 862.50 640.50 331.50 6.00 0.00 4160.50
1998 0.00 12.50 44.50 203.00 673.00 703.50 961.50 929.50 751.50 286.50 34.00 25.50 4625.00
1999 0.00 1.50 34.00 196.50 546.00 757.50 1039.00 887.50 552.50 231.00 112.00 0.00 4357.50
2000 0.00 33.00 96.00 165.00 565.50 729.50 946.00 927.50 570.00 343.00 38.50 0.00 4414.00
2001 0.00 0.00 0.00 210.00 565.00 794.50 1022.50 950.50 587.00 0.00 z 186.50 0.00 4316.00
2002 0.00 6.50 1.50 197.50 377.50 882.50 1091.00 882.50 651.00 112.50 25.00 0.00 4227.50
2003 2.00 0.00 63.50 250.50 441.50 743.00 968.00 968.50 523.50 319.50 20.00 0.00 4300.00
2004 0.00 0.00 66.50 222.00 447.50 669.50 867.00 708.50 708.00 275.00 47.00 0.00 4011.00
2005 0.00 5.00 33.50 291.00 464.00 869.50 984.00 858.50 731.50 298.00 62.00 0.00 4597.00
2006 0.00 0.00 14.50 265.00 534.50 803.50 1015.50 887.50 438.00 219.50 46.00 0.00 4224.00
2007 0.00 0.00 84.00 203.50 649.50 841.00 1004.00 904.00 634.50 356.50 30.50 0.00 4707.50
2008 0.00 0.00 0.00 103.00 406.50 741.50 950.50 874.50 593.50 241.50 71.00 0.00 3982.00
2009 0.00 0.00 38.00 144.00 0.00 z 696.00 794.50 779.00 648.50 79.50 73.00 0.00 3252.50
2010 0.00 0.00 37.50 332.50 473.00 772.00 957.00 995.50 527.50 330.50 55.00 0.00 4480.50
2011 0.00 0.00 7.00 109.50 455.00 735.00 1117.50 891.50 536.50 350.50 24.00 0.00 a 4226.50
2012 3.50 0.00 278.50 285.00 622.00 882.00 1159.00 853.50 546.00 128.50 22.00 0.00 4780.00
2013 0.00 0.00 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
Period of Record Statistics
MEAN 0.29 2.30 42.00 212.60 526.52 792.16 979.18 914.42 611.75 287.84 41.01 1.23 4401.58
S.D. 1.12 6.59 49.21 90.00 107.55 96.98 98.59 89.60 94.40 96.21 33.28 4.89 343.38
SKEW 4.67 3.96 2.50 0.39 0.51 0.08 0.10 0.07 0.29 0.54 1.19 4.92 0.15
MAX 7.00 39.50 282.00 456.00 900.50 1052.50 1241.50 1142.50 871.00 582.50 186.50 33.58 5268.53
MIN 0.00 0.00 0.00 52.00 249.50 489.50 707.50 702.50 387.00 70.50 0.00 0.00 3601.00
NO YRS 117 116 116 117 115 116 117 118 117 115 117 116 101