IRON MTN KINGSFORD WWTP, MICHIGAN

Monthly Total Growing Degree Days

(204090)

Base Temperature = 40 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201209
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
1899 0.00 z 0.00 0.00 230.00 414.00 676.00 838.00 832.50 386.00 302.50 51.50 0.00 3730.50
1900 4.50 0.00 0.00 272.50 472.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 749.00
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 303.00 i 259.50 6.00 0.00 c 265.50
1902 0.00 0.00 a 37.20 a 116.90 a 437.00 552.69 d 861.00 677.19 b 427.24 a 163.50 32.68 b 0.00 3305.40
1903 0.00 0.00 14.98 a 94.50 444.00 614.50 815.50 641.50 492.00 222.00 52.00 0.00 3390.98
1904 0.00 0.00 0.00 70.50 417.98 a 660.00 338.33 b 231.50 117.50 177.00 48.00 0.00 2060.81
1905 0.00 0.00 34.00 93.00 335.00 633.00 764.50 791.00 579.50 237.50 17.07 a 0.00 a 3484.57
1906 2.50 1.00 0.00 174.00 341.50 673.00 815.50 838.00 655.00 217.50 16.11 c 0.00 e 3734.11
1907 0.00 0.00 18.00 11.50 156.55 a 743.50 819.50 753.00 516.00 152.42 a 7.50 0.00 3177.97
1908 0.00 0.00 5.00 163.50 440.00 696.60 e 902.62 a 806.50 763.50 312.21 c 18.50 0.00 4108.43
1909 0.00 0.00 0.00 9.50 469.98 c 797.14 b 836.50 865.23 c 546.00 203.71 c 61.55 a 5.00 f 3789.62
1910 0.00 e 0.00 177.22 a 126.00 f 323.95 a 579.00 j 437.00 r 806.00 528.50 362.18 a 0.52 a 0.00 b 2198.37
1911 4.00 0.00 2.00 g 185.36 b 606.57 a 861.00 887.00 743.50 520.50 186.50 1.00 0.00 3995.42
1912 0.00 0.00 3.00 130.00 436.00 659.00 852.00 661.50 563.50 268.00 27.50 0.00 a 3600.50
1913 0.00 a 0.00 6.50 208.00 395.00 808.50 826.15 a 865.00 499.14 a 234.00 57.50 20.67 a 3920.45
1914 0.00 0.00 1.00 117.50 560.00 669.50 942.50 785.33 a 544.66 a 389.71 c 34.50 1.50 4046.20
1915 0.00 0.00 0.00 361.50 319.50 550.50 780.17 a 655.50 570.50 250.00 40.00 0.00 3527.67
1916 0.00 0.00 3.50 96.50 404.50 581.00 1070.00 876.50 491.00 237.00 25.50 0.00 b 3785.50
1917 0.00 0.00 0.00 a 42.00 271.00 570.00 905.00 679.00 471.00 54.50 42.50 0.00 3035.00
1918 0.00 1.00 74.00 86.50 499.50 636.50 851.50 835.00 369.50 254.50 47.00 0.00 e 3655.00
1919 0.00 c 0.00 9.00 118.00 429.50 889.50 992.00 788.50 573.50 180.00 7.50 f 0.00 3980.00
1920 0.00 0.00 24.50 49.00 376.50 783.50 794.00 778.00 650.00 507.50 0.00 z 3.50 3966.50
1921 0.00 1.50 1.00 357.00 587.00 927.00 1117.00 829.50 676.50 237.00 0.00 0.00 4733.50
1922 0.00 0.00 0.00 93.00 634.00 729.00 812.00 821.00 643.00 251.50 53.00 0.00 d 4036.50
1923 0.00 0.00 2.00 155.50 445.50 815.50 892.00 715.00 561.50 214.50 25.50 0.00 3827.00
1924 0.00 b 0.00 0.50 85.00 201.00 617.50 751.50 727.50 420.00 379.00 56.50 0.00 3238.50
1925 0.00 0.50 30.00 234.00 338.50 783.50 843.00 860.00 621.00 84.00 23.00 0.00 3817.50
1926 0.00 0.00 1.00 101.50 475.00 582.00 839.00 758.50 429.50 171.50 8.00 0.00 3366.00
1927 0.00 0.00 33.50 117.00 280.50 595.00 758.00 649.50 664.00 294.50 14.00 0.00 3406.00
1928 0.00 0.00 22.00 82.00 462.50 567.00 844.00 793.50 313.50 259.00 27.00 0.00 3370.50
1929 0.00 0.00 26.50 144.50 337.50 605.50 835.00 753.00 536.00 243.50 15.00 0.00 3496.50
1930 0.00 20.50 10.00 162.50 484.50 748.50 832.87 a 854.50 578.00 267.00 95.17 a 0.00 4053.54
1931 0.00 0.00 5.00 181.00 433.50 784.00 944.98 a 736.50 735.00 348.50 97.50 0.00 z 4265.98
1932 0.00 i 1.00 0.00 105.00 434.50 751.00 885.50 845.00 515.00 156.00 18.00 3.00 3714.00
1933 0.00 0.00 0.00 102.00 469.00 894.50 921.50 789.00 671.00 173.50 22.00 0.00 4042.50
1934 0.00 0.00 0.00 71.50 604.00 795.50 884.50 699.00 488.50 308.00 32.00 0.00 3883.00
1935 0.00 0.00 0.00 102.50 298.00 552.00 992.00 784.00 441.00 234.50 3.50 0.00 a 3407.50
1936 0.00 0.00 5.00 54.50 532.50 627.50 962.50 816.50 630.50 190.81 b 4.50 0.00 3824.31
1937 0.00 0.00 0.00 51.00 443.00 660.00 884.00 902.00 450.00 186.00 55.50 0.00 3631.50
1938 0.00 0.00 70.00 220.50 448.00 674.00 867.50 858.50 467.50 317.50 74.50 0.00 3998.00
1939 0.00 0.00 13.00 108.50 496.00 720.50 870.50 789.00 552.00 223.00 15.50 3.50 3791.50
1940 0.00 0.00 0.50 38.00 333.00 677.50 839.00 742.00 579.00 254.00 32.00 0.00 3495.00
1941 0.00 0.00 0.00 237.00 556.50 789.50 886.00 735.50 580.00 226.00 41.00 7.00 4058.50
1942 2.50 0.00 0.50 295.50 367.50 659.00 775.00 753.50 450.50 273.50 23.00 0.00 3600.50
1943 0.00 0.00 12.50 77.00 372.50 750.00 911.50 790.50 361.00 210.00 2.07 a 0.00 3487.07
1944 8.00 0.00 0.00 58.00 517.00 695.00 818.50 816.00 503.79 a 210.50 81.00 0.00 3707.79
1945 0.00 a 0.00 120.50 133.00 235.00 548.50 726.50 754.50 475.00 160.00 21.00 0.00 3174.00
1946 0.00 a 0.00 84.50 153.50 357.00 647.00 809.00 691.00 464.00 309.50 34.50 5.00 3555.00
1947 0.00 0.00 0.50 48.00 273.50 596.50 881.50 1004.00 559.50 491.50 31.50 0.00 3886.50
1948 0.00 0.00 10.00 187.00 376.00 665.50 872.50 828.00 634.00 194.00 57.50 1.00 3825.50
1949 0.00 0.00 2.50 191.50 456.00 853.00 914.00 850.50 457.00 347.00 28.00 0.00 4099.50
1950 0.00 0.00 0.00 22.50 364.00 683.00 753.00 630.00 490.00 327.50 10.00 0.00 3280.00
1951 0.00 0.00 x 4.50 100.50 431.50 f 600.50 829.50 664.00 440.00 210.28 a 1.50 8.50 2859.28
1952 0.00 0.00 0.50 254.48 a 406.50 718.50 871.50 757.50 537.00 100.00 22.50 0.00 3668.48
1953 0.00 0.00 10.50 45.50 429.50 705.50 828.50 834.00 515.50 355.00 94.00 0.50 3818.50
1954 0.00 0.00 0.00 143.00 274.50 752.50 800.00 716.50 428.50 197.50 30.00 0.00 3342.50
1955 0.00 0.00 6.00 245.50 525.00 689.00 1002.50 896.00 504.50 247.50 2.50 0.00 4118.50
1956 0.00 0.00 0.00 41.50 364.00 727.00 711.00 742.50 387.50 376.00 81.50 i 0.00 3349.50
1957 0.00 0.00 0.00 228.50 403.50 679.50 888.50 764.00 435.50 190.00 19.50 g 0.00 3589.50
1958 0.00 0.50 0.00 146.00 358.50 527.00 780.00 757.50 511.00 251.00 45.00 0.00 3376.50
1959 0.00 0.00 4.50 57.50 j 230.50 t 741.00 845.50 888.00 528.00 135.00 0.00 0.00 3142.00
1960 0.00 0.00 1.50 158.00 403.50 605.50 767.50 779.50 506.00 227.00 19.50 4.50 3472.50
1961 0.00 0.50 8.50 52.50 338.50 665.50 817.88 a 796.50 530.00 274.50 29.50 4.00 3517.88
1962 0.00 0.00 9.00 125.00 559.00 642.00 737.50 754.00 404.00 292.00 1.50 21.00 3545.00
1963 0.00 0.00 31.50 143.00 372.00 724.00 857.50 713.50 475.50 470.50 50.50 0.00 3838.00
1964 0.00 0.00 1.00 153.00 559.50 691.50 895.00 677.00 450.50 230.00 120.50 0.00 3778.00
1965 0.00 0.00 0.00 50.00 517.50 627.00 726.50 739.00 390.00 258.50 33.00 0.00 3341.50
1966 0.00 0.00 22.00 64.50 300.00 766.00 968.00 743.00 499.00 191.00 4.50 0.00 3558.00
1967 0.00 0.00 24.50 122.50 266.50 704.50 780.50 701.50 496.00 202.00 22.00 0.00 3320.00
1968 0.00 0.00 76.00 174.50 343.50 672.00 827.00 763.00 571.50 315.00 14.50 0.00 3757.00
1969 0.00 0.00 0.00 136.50 433.50 478.00 811.50 895.50 518.00 185.50 14.50 0.00 3473.00
1970 0.00 0.00 0.00 179.50 390.50 728.00 914.50 792.50 537.50 271.50 19.50 0.00 3833.50
1971 0.00 0.00 0.00 100.50 328.00 791.50 752.50 723.00 575.00 401.50 30.00 0.00 3702.00
1972 0.00 0.00 0.00 63.50 523.00 624.00 788.50 784.50 446.50 166.50 6.00 0.00 3402.50
1973 1.00 0.00 21.50 127.50 313.50 701.50 869.50 872.00 505.50 369.50 8.00 0.00 3789.50
1974 0.00 0.00 6.50 168.00 330.50 593.00 890.00 760.00 355.50 210.50 43.00 0.00 3357.00
1975 0.00 0.00 2.50 58.00 591.00 724.00 935.50 803.50 393.50 286.50 120.00 0.00 3914.50
1976 0.00 4.00 16.00 191.00 376.50 793.00 863.50 798.50 488.50 156.50 4.00 0.00 3691.50
1977 0.00 0.00 17.00 304.00 695.00 650.00 936.00 692.50 498.00 194.50 56.00 0.00 4043.00
1978 0.00 0.00 0.00 48.50 520.50 670.00 802.50 812.50 596.50 211.50 63.50 0.00 3725.50
1979 0.00 0.00 0.00 86.00 337.50 650.50 874.00 742.00 565.00 145.00 13.00 0.00 3413.00
1980 0.00 0.00 2.50 178.50 559.50 655.00 899.50 843.00 492.00 115.00 19.50 0.00 3764.50
1981 0.00 13.00 32.00 150.00 374.50 697.00 849.50 807.50 447.50 143.50 55.50 0.00 3570.00
1982 0.00 1.00 5.50 86.50 607.00 506.00 879.50 721.00 488.00 274.50 34.50 13.00 3616.50
1983 0.00 0.50 4.50 83.00 276.00 697.50 1012.00 939.50 576.00 161.20 a 23.04 b 0.00 b 3773.24
1984 0.00 1.50 0.00 b 141.21 a 325.50 743.00 827.18 a 873.50 431.50 291.29 b 2.07 a 0.00 3636.75
1985 0.00 0.00 11.00 215.50 497.00 575.17 a 799.50 732.00 471.00 164.00 13.50 0.00 3478.67
1986 0.00 0.00 26.00 207.50 523.00 633.00 904.00 688.50 510.00 152.50 6.50 0.00 3651.00
1987 0.00 z 0.00 34.00 255.00 494.00 802.00 927.50 789.00 539.50 78.50 44.50 0.00 3964.00
1988 0.00 0.00 2.50 105.50 526.50 791.00 915.00 902.00 502.50 95.50 9.00 0.00 3849.50
1989 0.00 0.00 20.00 82.00 420.50 631.00 906.00 821.50 496.50 244.00 0.00 0.00 3621.50
1990 0.00 0.00 30.50 258.00 311.00 685.50 802.50 772.50 498.50 126.50 49.00 0.00 3534.00
1991 0.00 0.00 16.00 201.50 592.50 820.50 849.00 893.50 477.00 145.50 2.00 0.00 3997.50
1992 0.00 0.00 0.00 88.50 0.00 z 622.00 688.00 704.00 464.50 197.50 0.50 0.00 2765.00
1993 0.00 0.00 27.00 62.00 407.50 610.00 862.50 849.00 367.00 126.00 5.50 0.00 3316.50
1994 0.00 0.00 a 6.50 102.50 438.50 768.00 815.50 737.00 583.00 262.50 35.50 0.00 3749.00
1995 0.00 a 0.00 32.50 21.50 378.50 869.00 880.50 932.00 472.00 244.00 0.00 0.00 3830.00
1996 0.00 0.00 2.00 60.50 343.00 716.50 757.50 831.00 569.50 184.50 10.50 0.00 3475.00
1997 0.00 1.00 5.00 102.00 228.00 779.00 826.50 703.00 568.50 245.50 15.50 4.00 3478.00
1998 0.00 1.00 42.50 183.00 642.50 689.00 895.50 890.50 657.50 249.00 30.00 21.50 4302.00
1999 0.00 0.00 21.50 161.50 524.50 748.50 967.00 793.00 529.50 126.00 75.00 0.00 3946.50
2000 0.00 6.00 69.00 110.50 511.50 662.00 799.00 801.35 a 481.55 a 283.50 53.00 0.00 3777.40
2001 0.00 0.00 1.00 175.50 516.00 725.50 865.00 935.00 516.50 182.00 111.00 10.50 4038.00
2002 3.50 0.00 0.50 0.00 z 272.00 757.50 1025.00 841.00 627.00 130.50 7.00 0.00 3664.00
2003 0.00 0.00 0.00 z 122.50 371.50 666.00 879.00 892.50 568.50 181.00 4.00 0.00 3685.00
2004 0.00 0.00 7.00 112.50 352.50 626.50 791.50 671.50 666.00 224.50 19.00 0.00 3471.00
2005 0.00 0.00 28.50 160.50 369.00 873.50 943.50 870.50 675.50 289.00 26.00 0.00 4236.00
2006 0.00 0.00 15.00 229.50 485.00 730.00 994.00 825.50 468.00 140.00 21.50 0.00 3908.50
2007 0.00 0.00 61.00 150.50 527.00 801.50 897.50 0.00 z 626.50 359.50 15.50 0.00 3439.00
2008 0.00 0.00 0.00 131.50 344.00 717.00 893.50 821.50 595.00 155.50 k 58.00 0.00 3560.50
2009 0.00 0.00 8.00 100.00 387.00 653.00 717.50 749.00 640.50 88.50 35.50 0.00 3379.00
2010 0.00 0.00 36.50 240.50 561.00 706.00 948.00 920.00 447.50 260.50 26.00 0.00 4146.00
2011 0.00 1.50 10.00 56.11 c 400.00 671.00 994.50 886.00 508.00 278.50 19.00 0.00 3824.61
2012 0.00 0.00 208.50 114.00 564.00 789.50 1023.50 829.50 28.00 z 0.00 z 0.00 z 0.00 z 3529.00
Period of Record Statistics
MEAN 0.24 0.50 17.02 134.18 423.21 694.68 857.87 784.84 515.89 233.16 30.41 1.21 3667.68
S.D. 1.05 2.38 31.84 73.02 105.75 88.48 92.93 91.62 92.44 85.11 26.95 3.93 334.21
SKEW 5.24 6.84 3.72 0.75 0.13 0.19 -1.22 -1.84 -0.41 0.68 1.33 4.02 -0.79
MAX 8.00 20.50 208.50 361.50 695.00 927.00 1117.00 1004.00 763.50 507.50 120.50 21.50 4733.50
MIN 0.00 0.00 0.00 9.50 156.55 478.00 338.33 231.50 117.50 54.50 0.00 0.00 2060.81
NO YRS 110 112 111 110 110 111 111 111 111 111 108 110 93