PORCUPINE 11 N, SOUTH DAKOTA

Monthly Total Growing Degree Days

(396736)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201204
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
1963 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 407.00 n 0.00 z 108.50 28.50 137.00
1964 16.00 1.00 51.00 270.50 645.00 775.00 1108.50 0.00 z 632.50 313.00 99.81 d 7.48 b 3919.79
1965 0.53 b 35.78 a 9.96 c 225.50 i 536.00 225.50 u 980.78 b 924.83 a 379.50 420.50 89.50 29.85 d 3407.24
1966 0.50 0.00 a 136.63 d 128.50 580.22 a 868.45 a 1240.50 909.00 671.25 b 330.00 61.00 19.50 4945.54
1967 15.50 23.50 143.50 278.00 379.75 a 669.50 974.50 939.00 679.50 362.50 55.50 3.10 a 4523.85
1968 3.00 1.50 157.67 b 193.00 379.00 765.50 987.50 906.75 a 621.00 373.50 34.50 7.50 4430.42
1969 0.00 0.00 42.88 a 386.50 630.00 659.50 1047.00 1152.50 834.50 174.50 96.00 7.00 5030.38
1970 15.50 27.48 a 10.50 170.00 610.18 a 856.50 1097.50 1143.00 623.00 210.00 58.50 23.00 4845.17
1971 7.00 2.00 74.50 281.50 478.00 867.50 949.50 1129.50 577.50 305.00 56.38 a 2.07 a 4730.45
1972 5.00 26.00 120.00 205.00 524.50 830.00 887.00 925.00 670.50 252.50 22.50 9.00 4477.00
1973 18.00 13.00 48.00 211.00 475.85 a 811.50 1011.50 1160.43 a 573.50 394.00 42.00 8.00 4766.78
1974 28.50 25.50 132.00 281.90 a 522.00 858.50 1227.00 917.00 535.86 a 390.00 67.00 3.50 4988.76
1975 1.50 0.00 47.00 198.00 530.50 768.00 1174.50 1039.02 a 629.00 374.00 111.00 23.00 4895.52
1976 3.00 79.00 91.00 311.00 547.67 a 858.10 a 1146.00 1051.00 743.00 262.00 72.50 13.00 5177.27
1977 0.00 16.50 93.00 355.86 a 727.00 950.00 1166.12 a 877.00 759.00 325.50 86.38 a 12.00 5368.36
1978 0.00 0.00 153.50 232.00 575.50 859.50 1085.00 1017.50 838.50 335.50 109.00 0.00 5206.00
1979 0.00 0.00 a 62.00 270.50 539.00 833.00 1055.50 951.50 835.86 a 369.50 24.50 43.00 4984.36
1980 14.97 b 24.00 32.00 287.07 a 589.50 932.00 1216.50 1050.00 0.00 z 318.00 117.50 38.23 a 4619.77
1981 15.50 45.00 80.50 428.50 530.50 874.00 1108.00 1016.50 763.50 360.00 126.00 9.50 5357.50
1982 0.00 45.50 83.00 219.50 500.50 685.50 1062.50 1053.00 657.50 251.50 19.00 10.00 4587.50
1983 12.50 50.00 81.00 103.00 373.00 740.00 1129.00 1233.50 737.00 328.50 92.50 0.00 4880.00
1984 5.00 14.00 38.00 169.00 505.50 837.00 1119.50 1196.00 625.00 330.50 70.50 15.50 4925.50
1985 0.00 13.00 84.50 410.00 764.00 815.50 1169.00 1008.50 623.50 327.50 37.00 0.00 5252.50
1986 0.00 17.50 220.50 257.00 555.50 941.50 1075.00 1006.00 573.00 311.00 51.50 0.00 5008.50
1987 29.00 28.50 47.00 395.50 703.50 908.00 1178.00 1003.50 671.00 279.50 121.50 31.00 5396.00
1988 11.50 27.50 118.00 273.50 671.00 1094.00 1146.50 1080.00 666.00 0.00 z 0.00 z 0.00 z 5088.00
1989 0.00 z 0.00 z 0.00 z 223.00 492.90 a 690.00 1092.50 1021.00 555.00 263.50 39.00 7.00 4383.90
1990 3.00 11.00 50.50 211.50 394.00 812.50 960.50 975.00 718.50 220.50 82.00 1.50 4440.50
1991 0.00 3.00 71.50 209.50 528.50 828.00 944.00 1008.00 612.50 241.50 9.00 0.00 4455.50
1992 0.00 21.50 88.00 219.50 550.00 662.00 750.00 791.00 576.50 248.00 3.50 0.00 3910.00
1993 0.00 0.00 79.50 147.50 470.50 631.00 815.00 825.00 413.50 201.00 8.00 7.00 3598.00
1994 0.00 4.67 a 78.00 223.00 601.00 775.00 853.50 970.50 638.00 244.00 40.00 14.50 4442.17
1995 5.50 38.50 126.50 63.00 329.50 667.00 923.50 1046.00 569.50 185.00 35.50 11.00 4000.50
1996 3.50 34.00 28.50 172.50 373.00 785.50 909.50 977.50 538.50 248.50 2.00 3.50 4076.50
1997 6.50 5.50 96.50 149.50 377.50 798.00 945.50 879.50 653.50 296.50 23.50 1.00 4233.00
1998 8.50 12.00 52.50 159.50 515.63 a 581.50 698.50 k 979.50 775.00 235.00 93.00 27.50 3439.63
1999 1.00 58.00 118.12 b 188.00 465.50 723.00 964.62 a 930.53 b 490.00 256.50 150.00 23.80 c 4369.08
2000 8.00 46.40 d 90.13 d 214.04 d 523.79 b 698.50 1045.45 b 1067.84 c 0.00 z 0.00 z 0.00 z 0.00 z 3694.15
2001 0.00 z 0.00 27.38 a 262.80 e 506.50 713.65 d 1094.00 1011.78 b 710.36 b 275.00 136.03 a 0.00 e 4737.50
2002 18.50 21.50 16.50 231.50 374.00 884.50 0.00 z 968.00 665.00 149.00 88.00 25.50 3442.00
2003 15.50 10.50 111.00 314.00 481.00 655.00 1148.50 1137.00 565.50 385.50 27.50 15.50 e 4866.50
2004 4.00 31.00 150.00 295.50 536.50 667.50 1019.00 832.50 676.00 333.00 71.00 12.50 4628.50
2005 19.00 21.50 62.00 248.00 445.50 827.00 1070.00 959.00 727.00 297.50 96.50 19.52 d 4792.52
2006 38.00 8.50 67.50 328.50 548.00 865.50 1197.00 990.50 486.00 251.50 89.50 1.15 d 4871.65
2007 7.50 2.50 212.00 226.00 612.00 861.50 1215.00 1048.50 681.00 332.65 e 0.00 z 0.00 z 5198.65
2008 0.00 z 0.00 z 0.00 z 0.00 z 419.50 684.00 1042.00 912.50 530.00 220.50 95.00 4.77 e 3908.27
2009 8.00 15.00 120.50 159.00 464.00 656.50 888.50 0.00 z 699.50 90.50 115.00 0.00 3216.50
2010 2.50 0.00 62.00 174.00 405.50 705.00 1028.00 1059.50 619.50 400.50 92.00 0.00 4548.50
2011 2.50 21.00 68.72 a 166.50 359.00 723.00 1129.50 1060.41 b 625.86 a 336.00 52.00 1.00 4545.49
2012 20.00 0.00 a 293.00 310.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 623.00
Period of Record Statistics
MEAN 8.13 18.77 89.96 238.57 513.47 786.24 1051.69 1003.07 640.15 291.53 69.09 11.31 4709.88
S.D. 9.08 18.14 56.31 79.43 100.08 103.37 115.63 96.82 100.07 71.99 38.40 11.37 422.49
SKEW 1.30 1.09 1.34 0.41 0.30 0.34 -0.48 0.16 -0.22 -0.45 0.00 0.97 -0.52
MAX 38.00 79.00 293.00 428.50 764.00 1094.00 1240.50 1233.50 838.50 420.50 150.00 43.00 5396.00
MIN 0.00 0.00 9.96 63.00 329.50 581.50 750.00 791.00 379.50 90.50 2.00 0.00 3598.00
NO YRS 46 47 47 47 48 47 46 46 46 46 46 46 36