FLANDREAU, SOUTH DAKOTA

Monthly Total Growing Degree Days

(392984)

Base Temperature = 50 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 0.00 14.50 184.50 577.50 650.00 548.50 388.45 a 53.22 a 7.50 0.00 2424.16
1894 0.00 0.00 11.50 120.00 309.50 679.50 839.50 684.50 394.00 75.50 0.00 0.00 3114.00
1895 0.00 0.00 8.50 191.00 274.50 442.00 612.00 597.00 464.50 42.50 0.00 0.00 2632.00
1896 0.00 0.00 0.00 138.00 368.50 469.00 578.50 614.00 240.00 55.59 b 0.00 0.00 2463.59
1897 0.00 0.00 0.00 55.50 251.50 405.50 648.50 428.00 571.50 148.00 5.50 0.00 2514.00
1898 0.00 0.00 0.00 42.00 222.50 511.00 642.50 623.50 399.50 67.00 0.00 0.00 2508.00
1899 0.00 0.00 0.00 111.00 259.50 496.00 661.00 690.00 326.50 128.50 3.00 0.00 2675.50
1900 0.00 0.00 z 0.00 141.00 355.50 527.50 576.60 a 739.00 322.00 212.00 3.00 0.00 2876.60
1901 0.00 a 0.00 0.00 a 121.50 256.50 464.00 824.50 668.50 274.50 116.50 0.00 0.00 2726.00
1902 0.00 0.00 9.00 51.00 286.00 326.50 595.00 487.50 185.00 84.00 3.50 0.00 2027.50
1903 0.00 0.00 0.00 31.50 223.00 341.00 538.00 468.50 257.00 70.00 4.00 0.00 1933.00
1904 0.00 0.00 0.00 20.50 222.00 390.00 485.67 a 481.50 258.00 105.00 7.00 0.00 1969.67
1905 0.00 0.00 17.50 48.00 150.00 448.00 499.50 644.50 413.00 116.50 0.00 0.00 2337.00
1906 0.00 0.00 0.00 72.50 274.00 374.50 511.00 598.50 387.00 97.50 0.00 0.00 2315.00
1907 0.00 a 0.00 a 24.00 3.50 55.00 401.50 555.00 557.50 263.50 40.82 a 0.00 0.00 c 1900.82
1908 0.00 c 0.00 0.00 c 131.50 209.00 367.00 573.00 479.00 516.00 114.50 0.50 0.00 2390.50
1909 0.00 0.00 0.00 10.00 219.50 429.50 564.50 739.19 b 291.00 115.00 27.50 0.00 f 2396.19
1910 0.00 0.00 106.50 170.50 157.30 d 500.69 a 673.06 e 543.00 340.00 225.00 0.00 z 0.00 2716.04
1911 0.00 0.00 10.00 52.76 a 400.33 b 710.00 644.50 501.00 315.00 b 37.50 0.00 0.00 2671.09
1912 0.00 0.00 b 0.00 73.97 a 232.50 399.00 636.50 549.00 271.50 109.50 0.50 0.00 2272.47
1913 0.00 0.00 0.00 103.00 187.50 568.00 612.25 a 703.50 402.00 0.00 z 0.00 z 0.00 z 2576.25
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 209.50 127.50 365.00 487.00 407.50 263.00 79.00 4.82 b 0.00 1943.32
1916 0.00 0.00 0.00 17.50 246.00 359.50 840.00 637.50 329.50 76.50 10.00 0.00 2516.50
1917 0.00 0.00 0.50 14.00 139.00 389.48 a 695.95 a 537.00 281.00 22.00 1.00 0.00 2079.93
1918 0.00 0.00 19.63 a 3.50 332.00 528.00 621.50 645.32 a 200.00 152.00 12.86 b 0.00 2514.81
1919 0.00 c 0.00 e 1.00 25.00 212.19 b 553.45 a 722.96 c 639.12 a 410.36 b 64.50 0.00 0.00 2628.58
1920 0.00 0.00 14.00 0.00 233.00 489.50 627.00 534.00 421.50 222.00 0.00 b 0.00 2541.00
1921 0.00 d 0.00 16.00 97.50 307.00 673.00 767.50 592.10 a 387.41 a 116.85 e 0.00 a 0.00 2957.36
1922 0.00 a 0.00 0.00 26.79 b 306.90 a 588.62 a 578.50 695.95 a 466.50 147.50 1.07 b 0.00 2811.83
1923 0.00 a 0.00 a 0.00 72.50 259.00 544.62 d 0.00 z 529.07 a 0.00 z 117.00 g 15.56 c 0.00 z 1420.74
1924 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 529.00 560.98 e 134.00 i 275.00 13.45 a 0.00 1378.43
1925 0.00 0.00 9.50 151.55 a 224.00 476.00 611.50 681.00 488.50 2.50 0.00 0.00 2644.55
1926 0.00 0.00 a 3.00 86.50 421.00 421.00 690.00 623.50 291.50 97.50 0.00 0.00 2634.00
1927 0.00 0.00 0.00 64.00 141.50 397.00 511.50 498.67 b 397.00 111.50 5.50 0.00 2126.67
1928 0.00 0.00 a 11.00 13.00 226.50 197.50 497.50 605.53 a 349.00 147.00 0.00 0.00 e 2047.03
1929 0.00 0.00 b 0.00 56.50 199.50 447.00 692.00 668.00 235.86 a 105.00 0.00 e 0.00 a 2403.86
1930 0.00 a 2.50 5.50 111.00 262.00 468.00 856.50 754.00 388.50 151.00 13.00 0.00 3012.00
1931 0.00 z 0.00 z 0.00 z 141.50 273.50 706.00 778.50 658.50 546.00 133.50 11.00 0.00 3248.50
1932 0.00 0.00 0.00 45.00 303.00 567.50 722.00 621.00 286.50 68.50 0.00 0.00 2613.50
1933 0.00 0.00 0.00 52.00 222.50 752.50 713.50 565.50 471.50 82.00 2.50 0.00 2862.00
1934 0.00 0.00 0.00 68.50 590.50 616.55 a 763.00 584.50 198.00 173.50 2.50 0.00 2997.05
1935 0.00 0.00 9.00 51.00 118.00 389.00 868.00 615.00 362.00 63.50 0.00 0.00 2475.50
1936 0.00 0.00 0.00 39.50 375.50 479.50 931.50 744.00 469.50 85.50 0.00 0.00 3125.00
1937 0.00 0.00 a 0.00 33.50 302.77 a 437.50 766.50 832.50 396.00 82.50 0.00 0.00 2851.27
1938 0.00 0.00 6.50 113.00 206.00 531.50 730.50 771.38 a 418.50 23.00 z 20.00 0.00 2797.38
1939 0.00 0.00 47.50 85.50 462.00 548.00 750.50 625.50 507.00 99.50 0.00 0.00 3125.50
1940 0.00 0.00 0.00 32.50 230.00 540.50 814.50 572.00 505.50 222.50 2.00 0.00 2919.50
1941 0.00 0.00 0.00 107.00 430.50 529.50 746.58 a 742.00 443.50 110.50 2.50 0.00 3112.08
1942 0.00 0.00 0.00 170.50 186.00 485.89 b 650.00 631.00 276.00 157.50 0.00 0.00 2556.89
1943 0.00 0.00 39.50 57.50 180.50 540.00 717.00 654.50 240.00 116.50 0.00 0.00 2545.50
1944 0.00 0.00 0.00 12.50 421.50 528.50 614.00 586.50 316.50 91.00 8.50 0.00 2579.00
1945 0.00 0.00 29.00 32.00 149.50 330.00 625.00 633.50 300.50 106.50 0.00 0.00 2206.00
1946 0.00 0.00 48.00 136.00 184.00 531.50 672.00 534.50 285.00 56.50 0.00 0.00 2447.50
1947 0.00 0.00 0.00 34.50 134.00 396.72 a 654.00 828.50 399.00 247.50 0.00 0.00 2694.22
1948 0.00 0.00 4.00 102.00 224.50 439.00 670.50 626.00 474.00 63.50 3.50 0.00 2607.00
1949 0.00 0.00 0.00 71.00 350.00 555.50 737.00 693.00 239.50 109.00 7.00 0.00 2762.00
1950 0.00 0.00 0.00 4.50 170.00 499.50 542.50 509.50 334.50 145.00 0.00 0.00 2205.50
1951 0.00 a 0.00 0.00 51.00 203.00 g 364.14 a 612.50 557.50 215.00 120.00 0.00 0.00 1920.14
1952 0.00 0.00 0.00 120.50 230.50 595.50 702.50 606.50 393.00 43.50 4.00 0.00 e 2696.00
1953 0.00 0.00 0.52 a 27.50 253.50 575.50 670.00 677.00 329.50 215.50 15.00 0.00 b 2764.02
1954 0.00 a 0.00 0.00 90.00 181.50 539.00 775.50 629.50 347.50 59.00 8.50 0.00 2630.50
1955 0.00 a 0.00 0.00 156.00 402.00 454.00 856.50 804.00 401.50 147.25 a 0.00 0.00 3221.25
1956 0.00 0.00 0.00 3.00 321.00 689.50 606.00 632.50 333.50 237.50 3.00 0.00 2826.00
1957 0.00 0.00 0.00 a 98.50 207.50 452.00 851.00 639.00 256.50 95.00 0.00 0.00 2599.50
1958 0.00 0.00 0.00 41.50 352.00 335.50 f 593.00 718.00 419.50 167.50 3.00 0.00 2294.50
1959 0.00 0.00 0.00 44.50 269.00 632.00 694.50 765.00 335.69 a 21.50 0.00 0.00 2762.19
1960 0.00 0.00 a 0.00 90.00 235.71 b 445.50 706.50 256.50 t 349.50 100.50 0.50 0.00 1928.21
1961 0.00 0.00 4.50 29.46 b 171.00 425.50 f 637.50 702.50 308.50 106.00 0.00 0.00 1959.46
1962 0.00 0.00 0.00 93.50 337.79 b 493.00 617.50 651.00 262.00 149.50 0.56 c 3.10 a 2607.95
1963 0.00 0.00 38.50 95.00 276.00 653.50 731.00 637.50 409.50 288.50 0.00 0.00 3129.50
1964 0.00 0.00 0.00 94.66 a 247.00 j 582.00 807.50 530.00 302.50 82.50 12.00 0.00 2411.16
1965 0.00 0.00 0.00 47.00 326.50 514.50 673.50 601.50 146.00 114.50 1.50 0.00 2425.00
1966 0.00 0.00 12.50 17.50 233.50 538.00 851.00 556.50 307.00 65.00 0.00 0.00 2581.00
1967 0.00 0.00 30.48 a 49.00 177.50 444.00 601.50 536.00 282.00 88.00 0.00 0.00 2208.48
1968 0.00 0.00 31.50 53.28 a 132.50 512.00 605.50 593.00 248.50 82.50 3.50 0.00 a 2262.28
1969 0.00 0.00 0.00 42.86 b 299.50 302.50 655.50 647.50 317.00 43.00 0.00 0.00 2307.86
1970 0.00 0.00 0.00 67.50 273.00 547.00 690.50 623.00 321.50 77.00 0.00 0.00 2599.50
1971 0.00 0.00 0.50 83.50 182.00 602.00 529.50 602.50 301.00 102.50 0.00 0.00 2403.50
1972 0.00 0.00 0.00 7.50 299.00 471.50 569.50 586.50 248.00 50.50 0.00 0.00 2232.50
1973 0.00 0.00 a 6.00 40.50 185.50 527.00 642.00 704.50 260.50 135.00 1.00 0.00 2502.00
1974 0.00 0.00 0.50 68.50 159.00 441.00 796.50 496.00 207.00 77.50 3.50 0.00 2249.50
1975 0.00 0.00 0.00 12.00 298.00 461.50 760.00 633.50 203.50 115.50 14.48 a 0.00 2498.48
1976 0.00 0.00 10.00 94.50 212.50 586.50 748.50 697.00 333.50 75.00 0.00 0.00 2757.50
1977 0.00 0.00 5.68 a 0.00 z 477.50 532.50 710.00 455.18 a 307.00 22.50 7.00 0.00 2517.37
1978 0.00 0.00 13.50 24.50 276.50 482.50 616.50 628.00 481.67 c 48.00 10.34 a 0.00 2581.51
1979 0.00 0.00 a 0.00 41.50 147.00 475.00 668.00 519.50 351.50 24.00 0.00 0.00 2226.50
1980 0.00 0.00 a 0.00 93.00 295.02 a 541.50 696.00 602.50 332.50 83.50 1.00 0.00 a 2645.02
1981 0.00 0.00 5.00 125.00 190.00 498.00 674.00 576.50 317.00 41.00 6.00 0.00 2432.50
1982 0.00 0.00 0.00 48.50 280.00 348.00 705.00 587.00 277.00 59.50 0.00 0.00 2305.00
1983 0.00 0.00 0.00 15.50 145.00 444.00 788.43 a 796.00 342.00 52.50 7.50 0.00 2590.93
1984 0.00 0.00 0.00 15.00 182.50 525.00 653.50 673.00 225.50 111.50 0.00 0.00 2386.00
1985 0.00 0.00 0.00 138.50 308.50 362.00 592.00 440.00 277.50 16.50 0.00 0.00 2135.00
1986 0.00 0.00 15.50 29.00 237.00 542.50 690.50 430.50 242.00 53.50 0.00 0.00 2240.50
1987 0.00 0.00 5.00 128.50 371.50 581.50 727.50 502.00 290.00 29.00 7.00 0.00 2642.00
1988 0.00 0.00 1.50 41.50 401.00 705.50 710.50 636.00 274.00 18.00 0.00 0.00 a 2788.00
1989 0.00 0.00 12.50 97.50 243.50 460.50 722.00 573.50 290.00 108.50 0.00 0.00 2508.00
1990 0.00 0.00 6.00 106.50 155.00 528.00 569.50 564.50 408.00 47.00 13.00 0.00 2397.50
1991 0.00 0.00 2.00 91.00 361.00 643.50 634.50 620.50 305.50 61.00 0.00 0.00 2719.00
1992 0.00 0.00 0.00 33.00 289.50 409.50 397.50 396.00 236.00 93.50 0.00 0.00 1855.00
1993 0.00 0.00 0.00 13.50 185.00 368.00 582.50 571.50 167.50 53.50 0.00 0.00 1941.50
1994 0.00 a 0.00 3.50 54.50 346.00 532.50 540.00 496.50 345.00 74.00 3.50 0.00 2395.50
1995 0.00 0.00 2.00 0.00 122.50 521.50 652.50 675.50 249.50 52.00 0.00 0.00 2275.50
1996 0.00 0.00 0.00 14.50 165.50 510.00 0.00 z 569.50 237.00 84.00 0.00 0.00 1580.50
1997 0.00 0.00 0.00 21.00 120.00 548.50 639.50 552.50 349.50 154.50 0.00 0.00 2385.50
1998 0.00 0.00 8.50 48.50 363.00 404.00 651.50 619.50 458.50 60.00 0.00 0.00 2613.50
1999 0.00 0.00 8.00 34.00 246.50 457.50 729.00 577.50 270.00 46.50 14.50 0.00 2383.50
2000 0.00 0.00 9.00 32.50 267.00 432.00 636.00 617.50 310.50 117.00 11.50 0.00 2433.00
2001 0.00 0.00 0.00 76.50 265.00 494.50 712.50 640.50 299.00 0.00 z 34.50 0.00 2522.50
2002 0.00 0.00 0.00 78.50 158.50 582.50 781.00 572.50 374.00 28.50 0.00 0.00 2575.50
2003 0.00 0.00 8.00 91.50 158.50 443.50 658.00 658.50 258.00 129.50 1.00 0.00 2406.50
2004 0.00 0.00 9.50 66.50 197.50 369.50 557.00 398.50 408.00 73.50 2.00 0.00 2082.00
2005 0.00 0.00 5.50 103.00 225.00 569.50 674.00 548.50 439.00 110.50 5.50 0.00 2680.50
2006 0.00 0.00 0.00 81.50 255.50 503.50 705.50 577.50 174.00 90.50 8.50 0.00 2396.50
2007 0.00 0.00 4.50 67.00 349.00 541.00 694.00 594.00 352.50 111.00 0.00 0.00 2713.00
2008 0.00 0.00 0.00 19.50 138.50 441.50 640.50 564.50 300.00 70.50 20.50 0.00 2195.50
2009 0.00 0.00 1.00 32.00 0.00 z 401.00 484.50 469.00 354.50 3.00 3.00 0.00 1748.00
2010 0.00 0.00 12.00 103.00 238.50 472.00 647.00 685.50 233.50 100.50 6.50 0.00 2498.50
2011 0.00 0.00 0.00 9.00 202.00 435.00 807.50 581.50 264.50 155.50 0.00 0.00 a 2455.00
2012 0.00 0.00 82.00 79.50 316.00 582.00 849.00 543.50 272.00 21.00 0.00 0.00 2745.00
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 0.00 0.02 6.95 65.94 251.70 493.47 669.22 604.46 329.67 97.94 3.69 0.03 2518.52
S.D. 0.00 0.23 15.30 45.88 89.22 95.67 98.51 89.52 86.85 56.64 6.04 0.29 292.23
SKEW 0.00 10.63 3.99 0.71 0.78 0.12 0.11 0.07 0.46 1.06 2.36 10.63 0.08
MAX 0.00 2.50 106.50 209.50 590.50 752.50 931.50 832.50 571.50 288.50 34.50 3.10 3221.25
MIN 0.00 0.00 0.00 0.00 55.00 197.50 397.50 396.00 146.00 2.50 0.00 0.00 1855.00
NO YRS 117 116 116 117 115 116 117 118 117 115 117 116 101