STEPHAN 2 NW, SOUTH DAKOTA

Monthly Total Growing Degree Days

(397992)

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
1903 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 392.50 g 331.50 45.00 a 0.00 376.50
1904 0.00 0.00 8.00 128.00 564.50 792.00 906.50 939.50 655.00 c 411.27 a 82.00 0.00 4486.77
1905 0.00 6.00 120.00 181.50 390.50 305.50 r 909.50 1041.08 a 750.50 236.00 58.00 0.00 3693.08
1906 0.00 9.50 6.00 297.50 520.00 699.50 903.02 d 891.00 681.50 292.50 26.50 0.00 4327.02
1907 0.00 4.15 a 96.00 63.62 a 281.50 719.00 643.50 j 920.70 a 542.07 a 251.00 34.00 0.00 b 2912.04
1908 14.00 1.00 30.00 319.50 434.00 672.00 926.50 824.50 798.50 287.00 67.00 0.00 4374.00
1909 0.00 0.00 6.00 103.45 a 470.50 806.00 984.50 1104.50 637.50 298.00 99.00 0.00 4509.45
1910 0.00 0.00 230.50 342.50 375.00 814.50 1015.50 866.00 620.50 445.50 0.00 z 0.00 4710.00
1911 0.00 0.00 89.00 227.50 623.62 a 993.50 935.00 833.00 595.50 201.50 3.62 a 1.50 4503.74
1912 0.00 0.00 10.00 254.00 554.00 732.00 977.05 c 876.50 463.50 294.00 33.50 0.00 4194.55
1913 0.00 a 4.67 a 13.00 248.00 422.63 a 937.00 954.00 1069.50 a 677.50 253.00 65.00 0.00 4644.30
1914 12.00 0.00 30.50 269.50 532.00 791.00 1098.50 967.00 705.00 354.50 80.50 0.00 4840.50
1915 0.00 0.00 0.00 418.00 378.00 642.00 838.50 767.00 555.50 361.50 71.00 0.00 4031.50
1916 0.00 0.00 56.00 173.50 439.00 630.00 1132.50 627.00 l 562.50 199.43 a 27.00 j 0.00 3192.93
1917 0.00 0.00 11.50 92.50 393.50 661.00 1039.00 862.00 618.50 160.00 115.00 0.00 b 3953.00
1918 0.00 1.00 136.50 119.00 366.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 256.50
1919 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
1920 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
1921 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
1922 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
1923 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
1924 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
1925 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
1926 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
1927 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
1928 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
1929 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
1930 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
1931 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
1932 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
1933 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
1934 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
1935 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
1936 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
1937 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
1938 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
1939 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
1940 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
1941 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
1942 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
1943 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
1944 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
1945 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
1946 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
1947 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
1948 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
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1950 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
1951 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
1952 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
1953 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
1954 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
1955 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
1956 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
1957 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
1958 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
1959 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1011.11 c 1041.00 1079.66 b 572.22 c 135.92 e 6.67 c 0.00 a 3846.58
1960 0.00 c 0.00 c 0.57 d 189.64 b 457.25 c 706.50 1043.50 971.69 b 661.00 342.55 a 18.50 f 0.00 c 4372.71
1961 0.00 c 0.00 b 47.50 48.00 i 415.40 a 823.00 961.53 b 1017.83 a 518.28 a 302.50 33.00 e 0.00 4119.04
1962 3.44 d 7.00 4.13 a 178.50 g 577.50 725.50 898.00 879.33 e 370.50 i 315.17 a 32.50 11.00 3453.57
1963 2.50 7.00 b 108.50 199.50 487.00 889.50 1067.00 985.00 702.00 0.00 z 0.00 z 1.60 b 4449.60
1964 0.00 0.00 2.07 a 284.50 602.50 813.50 1110.50 847.00 561.60 e 251.50 68.50 0.00 4541.67
1965 0.00 4.50 0.00 160.50 531.00 746.00 993.00 953.00 312.41 a 369.00 45.50 2.07 a 4116.98
1966 0.00 0.00 100.48 b 90.50 451.57 a 812.00 1154.50 831.50 571.50 234.50 4.82 b 0.00 a 4251.37
1967 0.00 0.00 83.00 187.00 368.00 712.50 920.50 869.00 672.50 267.50 29.00 0.55 c 4109.55
1968 0.00 a 0.00 149.50 186.50 370.50 0.00 z 983.73 a 919.50 601.03 a 0.00 z 16.55 a 0.00 3227.32
1969 0.00 0.00 0.00 283.50 626.50 612.50 1010.50 1074.67 a 716.00 107.31 e 41.50 4.00 4476.47
1970 0.00 a 1.50 0.00 170.00 608.00 857.59 a 1064.00 1023.00 a 653.50 233.00 4.00 0.00 4614.59
1971 0.00 0.00 41.00 281.00 450.00 944.50 942.00 1075.50 623.50 345.50 28.45 a 0.00 4731.45
1972 0.00 0.00 30.50 168.00 0.00 z 804.00 904.00 980.50 654.50 238.00 0.00 z 0.00 3779.50
1973 0.00 0.00 z 0.00 z 192.00 503.00 854.50 1037.00 1123.23 a 562.50 413.50 0.00 z 0.00 a 4685.73
1974 7.50 2.00 60.00 261.50 459.83 a 789.50 1210.00 906.50 573.50 395.50 25.00 0.00 c 4690.83
1975 0.00 a 0.00 23.00 164.00 582.50 795.50 1162.50 1047.00 577.50 373.00 114.50 3.50 4843.00
1976 0.00 a 24.50 70.00 310.50 521.50 917.00 1173.50 1178.50 699.00 229.00 8.57 b 0.00 5132.07
1977 0.00 1.50 36.00 395.00 763.50 876.00 1090.68 a 845.27 a 660.50 256.00 46.50 0.00 4970.95
1978 0.00 0.00 64.50 156.00 523.26 b 811.00 980.00 986.12 b 836.00 280.50 87.50 0.00 4724.88
1979 0.00 0.00 25.00 188.50 424.00 814.14 a 982.50 931.50 791.50 204.50 h 10.18 b 4.50 4171.82
1980 0.50 0.00 6.50 258.21 b 627.48 b 880.50 1119.50 1015.25 c 681.72 a 250.14 b 74.48 a 0.00 4914.29
1981 7.20 c 21.50 60.93 b 347.59 a 444.52 c 760.71 b 1008.03 b 907.50 722.68 b 259.88 a 96.35 d 0.00 4636.89
1982 0.00 5.50 17.50 176.00 553.50 632.50 1014.00 944.50 552.00 210.50 3.00 0.50 4109.50
1983 0.00 6.50 33.00 86.50 334.00 745.00 1112.00 1202.00 651.50 259.00 40.50 0.00 4470.00
1984 0.00 1.00 11.00 135.50 496.50 798.00 1024.00 1066.50 505.00 271.50 32.50 0.00 4341.50
1985 0.00 0.00 43.50 326.00 685.00 603.00 974.50 754.00 530.00 227.50 21.21 a 0.00 4164.71
1986 0.00 0.00 116.52 b 182.00 558.00 852.50 1036.00 873.50 511.50 316.50 15.50 0.00 4462.02
1987 10.00 16.50 50.50 380.00 719.50 921.50 1141.00 889.00 643.50 210.50 83.50 1.00 5066.50
1988 0.00 7.50 70.00 228.50 676.50 1080.00 1117.50 1090.50 661.00 232.00 34.50 4.00 5202.00
1989 0.00 0.00 50.50 281.00 557.00 817.00 1149.50 1064.00 652.50 332.00 32.50 0.50 4936.50
1990 2.00 1.00 59.50 253.50 466.50 843.00 997.50 994.50 802.00 289.50 77.50 5.50 4792.00
1991 0.00 6.00 54.00 258.00 606.00 914.00 1019.50 1059.50 686.50 308.00 10.50 0.00 4922.00
1992 1.00 27.00 51.00 192.00 623.50 752.50 780.00 820.50 610.00 308.00 0.00 0.00 4165.50
1993 0.50 0.00 56.50 151.50 511.50 701.50 878.50 917.50 510.00 250.50 8.00 0.00 3986.00
1994 0.00 0.00 66.50 220.50 673.50 869.00 942.50 923.50 730.00 341.50 36.00 0.00 4803.00
1995 0.00 11.00 87.50 49.50 425.50 793.50 1025.00 1072.00 643.00 265.00 6.50 0.00 4378.50
1996 4.00 8.50 13.50 176.00 433.50 835.00 921.50 998.50 630.50 286.50 2.50 0.00 4310.00
1997 0.00 0.00 59.00 163.00 446.50 845.50 990.00 925.00 696.00 384.50 1.50 0.00 4511.00
1998 4.50 17.50 47.50 255.50 624.00 693.00 1043.50 1029.00 872.00 283.00 40.50 27.50 4937.50
1999 0.00 17.00 78.00 197.50 511.50 785.50 1064.33 a 988.50 0.00 z 0.00 z 108.75 b 5.68 a 3756.77
2000 0.00 34.00 98.00 192.50 570.50 727.50 1032.50 1051.00 663.50 325.00 24.00 0.00 a 4718.50
2001 0.00 0.00 0.00 202.50 543.00 758.00 1074.50 1027.50 666.50 244.50 163.50 0.00 4680.00
2002 3.50 11.50 10.50 213.00 381.50 904.50 1133.50 930.50 652.00 103.00 33.50 3.00 4380.00
2003 5.50 3.00 86.00 284.00 458.00 732.00 1036.50 1038.50 618.00 359.50 f 19.50 0.00 4281.00
2004 0.00 4.50 93.50 239.50 487.00 635.50 941.50 809.50 688.00 260.50 47.00 0.50 4207.00
2005 3.74 b 11.00 49.50 248.50 423.50 827.00 1051.50 1012.00 759.00 287.50 77.00 0.00 c 4750.24
2006 2.00 0.00 24.50 244.00 g 549.00 873.00 1204.50 1022.50 489.00 208.00 61.00 0.00 4433.50
2007 0.00 a 0.00 143.00 213.00 603.00 809.00 1111.50 945.00 670.50 286.50 45.00 0.00 4826.50
2008 0.00 a 0.00 z 12.00 129.00 395.50 0.00 z 1002.50 966.00 617.00 217.00 58.00 0.00 3397.00
2009 0.00 2.00 61.50 176.00 439.00 713.00 846.50 839.00 651.00 69.50 63.50 0.00 x 3861.00
2010 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
2011 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
2012 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
2013 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
Period of Record Statistics
MEAN 1.29 4.55 51.57 214.88 506.75 795.29 1017.87 963.51 637.30 274.66 45.01 1.18 4547.67
S.D. 2.96 7.46 45.44 79.70 100.63 100.05 92.49 98.76 94.15 74.62 34.86 3.82 321.48
SKEW 2.71 2.09 1.26 0.32 0.28 0.28 -0.07 0.06 -0.32 -0.28 0.94 5.47 0.01
MAX 14.00 34.00 230.50 418.00 763.50 1080.00 1210.00 1202.00 872.00 445.50 163.50 27.50 5202.00
MIN 0.00 0.00 0.00 49.50 281.50 603.00 780.00 754.00 312.41 69.50 0.00 0.00 3953.00
NO YRS 65 63 64 62 63 62 64 64 63 61 60 65 47