MANITOWOC, WISCONSIN

Monthly Total Growing Degree Days

(475017)

Base Temperature = 40 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201210
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 7.50 54.50 258.00 686.00 273.00 t 735.50 565.00 81.50 t 34.00 0.50 2341.00
1894 0.00 0.00 26.50 134.00 307.50 768.00 911.92 a 785.50 638.50 231.47 a 10.50 5.50 3819.38
1895 0.00 7.00 13.50 125.00 351.00 665.50 755.00 806.00 613.00 143.50 27.00 0.00 3506.50
1896 0.00 7.00 7.50 220.50 551.50 720.00 869.00 899.50 459.00 181.50 30.00 2.00 3947.50
1897 9.00 0.00 5.00 111.50 346.50 548.00 917.50 780.50 682.00 405.50 39.00 0.00 3844.50
1898 0.00 0.00 12.50 123.00 397.00 662.00 824.50 820.50 640.50 265.00 46.00 0.00 3791.00
1899 0.00 0.50 0.00 189.00 398.00 653.50 821.50 849.50 540.50 350.00 63.00 6.00 3871.50
1900 0.00 0.00 0.00 191.00 448.00 627.00 760.50 981.00 637.00 440.00 32.50 0.50 4117.50
1901 0.00 0.00 0.00 132.50 373.50 663.50 935.50 902.00 557.00 301.00 19.00 0.00 3884.00
1902 0.00 1.50 37.00 130.50 496.00 576.11 c 900.50 763.00 440.17 a 277.00 129.50 0.00 3751.28
1903 0.00 0.00 28.50 63.50 g 375.21 b 648.50 873.00 738.00 552.50 281.00 65.50 0.00 3562.21
1904 0.00 0.00 0.00 b 63.50 411.50 630.00 808.00 707.00 538.50 283.50 82.00 0.00 3524.00
1905 0.00 a 0.00 40.00 118.00 317.50 595.00 805.50 848.00 665.50 268.50 28.00 1.07 b 3687.07
1906 5.17 a 0.00 0.00 k 139.50 178.00 m 420.00 j 838.00 929.50 733.00 286.50 40.00 0.00 k 2971.67
1907 1.50 0.00 59.50 24.50 200.50 624.00 865.00 740.50 559.00 245.93 a 25.86 a 0.00 y 3346.30
1908 0.00 d 0.00 o 19.00 184.00 440.50 708.10 a 963.00 227.50 w 727.50 264.65 d 64.00 0.00 3370.75
1909 0.00 0.00 0.00 30.00 348.00 645.50 840.50 907.00 576.50 203.00 128.50 5.50 3684.50
1910 0.00 0.00 145.50 146.00 278.00 754.50 957.00 864.00 567.00 411.00 5.00 0.00 4128.00
1911 0.00 0.50 31.50 98.50 490.00 792.00 870.67 b 794.00 609.50 223.50 f 24.50 0.00 c 3711.17
1912 0.00 a 0.00 0.00 136.00 380.00 633.50 789.50 733.50 629.00 314.00 59.00 2.50 3677.00
1913 0.00 1.50 15.00 126.50 345.65 a 680.00 810.00 862.50 593.00 293.50 88.00 21.50 3837.15
1914 0.00 0.00 23.50 87.50 476.00 646.00 908.00 838.00 573.00 461.00 99.00 6.50 4118.50
1915 0.00 0.00 1.00 297.50 297.50 533.00 762.50 697.50 611.00 343.50 81.00 0.00 3624.50
1916 0.00 0.00 0.50 121.00 393.00 540.00 1021.00 915.50 517.50 234.00 56.50 6.50 3805.50
1917 0.00 0.00 9.00 56.00 279.50 517.50 861.00 736.00 497.00 124.00 54.00 0.00 3134.00
1918 0.00 0.00 64.00 71.00 430.50 616.50 780.50 913.00 479.00 380.00 92.50 5.50 3832.50
1919 0.00 0.00 17.50 95.17 a 383.50 827.50 964.50 842.00 689.50 300.50 23.50 0.00 4143.67
1920 0.00 0.00 31.00 47.50 342.50 677.00 768.50 755.00 668.50 476.50 32.50 14.00 3813.00
1921 3.00 1.50 52.50 230.00 500.00 803.00 1097.00 838.00 744.50 0.00 z 19.00 1.00 4289.50
1922 0.00 0.00 20.50 106.00 487.50 740.00 853.50 870.50 680.00 358.00 121.50 3.00 4240.50
1923 0.00 0.00 3.00 134.50 330.00 703.50 863.50 795.50 570.00 257.50 62.00 14.50 3734.00
1924 0.00 0.00 a 2.50 99.00 255.00 583.00 770.00 712.50 430.50 388.50 69.00 0.00 3310.00
1925 0.00 0.00 35.50 202.50 320.50 691.50 848.50 879.50 721.50 147.00 41.50 0.00 3888.00
1926 0.00 0.00 5.50 106.50 404.00 591.00 818.00 801.50 555.00 241.00 35.00 0.00 3557.50
1927 0.00 0.50 28.00 103.50 340.50 577.00 806.00 700.00 716.00 395.50 59.50 0.00 h 3726.50
1928 0.00 0.00 a 21.00 72.00 382.50 560.69 a 876.00 853.00 502.00 320.50 56.50 8.00 3652.19
1929 0.00 0.00 40.50 164.50 307.00 576.50 893.32 a 847.00 587.00 319.00 35.00 0.00 3769.82
1930 0.52 a 27.50 22.00 105.50 405.50 774.64 b 888.67 a 926.50 630.00 254.50 138.00 1.50 4174.83
1931 0.00 0.00 0.52 a 180.50 383.37 a 755.50 1060.00 870.50 784.00 435.00 173.00 12.50 4654.88
1932 4.00 15.00 12.00 93.00 418.00 756.50 925.50 929.50 598.00 274.00 44.50 6.50 4076.50
1933 2.00 0.00 0.00 79.50 387.50 852.50 982.00 824.00 731.50 288.50 25.00 4.50 4177.00
1934 7.23 a 0.00 4.00 135.50 563.50 826.50 938.50 843.50 593.00 366.00 90.00 0.00 a 4367.73
1935 0.00 0.00 16.50 92.50 365.00 619.50 1067.00 942.00 625.50 297.50 31.50 0.00 4057.00
1936 0.00 0.00 17.00 98.50 572.00 681.00 1049.00 936.50 728.00 262.98 a 35.50 12.00 4392.48
1937 0.00 a 0.00 a 2.00 81.72 a 475.50 716.00 1006.00 1016.50 632.50 231.00 46.50 0.00 4207.72
1938 0.00 a 0.00 68.50 211.50 377.50 694.00 929.50 980.00 632.50 449.50 98.00 0.00 4441.00
1939 0.00 0.00 56.50 100.00 460.50 744.00 981.00 933.00 721.50 305.50 40.50 12.50 4355.00
1940 0.00 0.00 4.50 63.00 372.00 706.00 964.00 880.00 679.50 400.50 56.50 0.00 4126.00
1941 0.00 a 0.00 0.50 267.00 560.50 825.00 a 1023.00 965.50 725.50 376.00 94.50 19.00 4856.50
1942 0.00 0.00 9.00 254.50 416.50 740.50 983.50 0.00 z 582.00 355.00 54.50 0.00 3395.50
1943 0.00 2.50 57.50 125.00 399.00 822.50 1013.50 953.00 529.00 328.00 20.50 2.00 4252.50
1944 17.00 2.00 6.00 82.00 534.50 770.00 960.50 963.00 648.50 337.50 124.00 0.00 4445.00
1945 0.00 0.00 149.50 152.00 330.50 631.50 846.00 933.62 a 620.50 282.00 58.00 0.00 a 4003.62
1946 0.00 0.00 94.00 243.00 395.50 685.50 945.50 854.50 609.00 414.00 77.50 33.50 4352.00
1947 0.00 0.00 7.00 90.00 295.50 573.50 927.00 1042.63 a 674.00 519.00 71.00 0.00 4199.63
1948 0.00 0.00 20.50 178.00 410.50 705.00 962.00 938.00 753.00 298.12 a 96.50 0.00 4361.62
1949 0.00 a 0.00 12.50 173.00 455.50 830.50 1048.50 969.00 548.50 376.00 74.50 2.00 4490.00
1950 1.00 0.00 0.00 51.50 406.50 749.00 824.50 754.50 599.00 424.50 53.79 a 0.00 3864.29
1951 0.00 0.00 7.50 113.50 545.94 d 655.50 931.50 829.77 a 564.50 313.00 18.00 19.63 a 3998.84
1952 0.00 0.00 6.50 273.50 478.00 764.00 968.00 864.50 637.76 a 234.64 b 82.00 2.00 4310.90
1953 3.00 0.00 21.50 89.50 439.50 786.50 988.00 1014.00 674.00 461.50 160.50 8.00 4646.00
1954 0.00 8.50 9.00 228.50 349.50 769.50 936.50 895.00 685.00 362.00 79.00 0.00 4322.50
1955 0.00 0.00 10.50 303.00 544.00 738.00 1082.00 1099.00 660.50 378.00 23.50 0.00 4838.50
1956 0.00 0.00 a 0.50 66.72 a 388.00 801.00 845.00 898.50 547.50 444.00 114.00 3.50 4108.72
1957 0.00 2.50 5.00 207.00 418.50 a 733.50 960.00 925.00 622.00 312.00 63.50 3.00 4252.00
1958 0.00 0.00 0.00 214.00 501.00 635.50 896.00 936.50 643.00 362.00 125.00 0.00 4313.00
1959 0.00 0.00 3.50 187.50 535.50 804.83 a 928.00 1046.00 700.50 261.50 15.00 1.00 4483.33
1960 0.00 0.00 3.00 201.50 377.50 680.00 840.00 885.50 685.00 307.50 49.50 7.00 4036.50
1961 0.00 0.00 11.00 79.00 328.50 720.00 869.50 893.00 688.50 357.00 44.00 10.00 4000.50
1962 0.00 0.00 2.50 172.00 525.00 674.50 824.50 868.50 552.50 381.50 19.00 22.50 4042.50
1963 0.00 0.00 44.50 162.41 a 367.50 712.50 915.00 811.00 601.00 550.50 100.50 0.00 4264.91
1964 0.00 0.00 11.00 174.50 544.50 746.50 959.50 807.55 a 575.00 257.00 170.50 0.00 4246.05
1965 0.00 0.00 0.00 78.00 476.00 652.50 843.50 847.00 582.00 310.00 71.90 a 7.00 3867.90
1966 0.00 0.00 17.00 87.00 344.50 777.00 1016.50 870.00 622.00 291.00 40.00 1.50 4066.50
1967 0.00 0.00 23.00 141.00 291.00 727.50 834.50 766.00 602.00 288.00 30.00 0.00 3703.00
1968 0.00 0.00 78.50 168.50 359.50 713.50 877.50 885.50 669.00 331.00 47.00 5.00 4135.00
1969 0.00 0.00 9.00 81.50 o 433.50 527.00 883.50 a 966.00 575.00 246.45 a 25.00 0.00 3665.45
1970 0.00 0.00 0.00 176.00 440.50 749.50 980.50 948.00 635.50 323.50 40.00 7.50 4301.00
1971 0.00 0.00 c 0.00 114.00 378.41 b 811.00 856.50 826.67 a 680.50 491.50 48.50 0.00 a 4207.08
1972 0.00 0.00 b 1.00 89.50 511.00 623.00 888.15 a 832.00 565.00 213.38 a 39.50 0.00 z 3762.53
1973 0.00 b 0.00 27.00 93.50 332.73 a 797.50 968.23 a 967.95 b 633.00 457.00 40.50 1.60 b 4319.02
1974 0.00 0.00 b 11.50 169.82 b 366.83 a 654.50 0.00 z 852.00 521.90 a 269.70 a 59.00 0.00 b 2905.25
1975 1.03 a 0.00 a 2.07 a 80.50 563.17 a 748.50 991.50 923.44 e 525.00 c 370.45 a 165.50 15.00 4386.16
1976 0.00 a 0.00 a 40.00 165.50 374.00 830.50 982.50 877.09 b 600.00 c 198.83 b 12.50 0.00 a 4080.91
1977 0.00 0.50 52.00 266.50 640.50 662.00 954.50 773.45 a 630.00 291.06 d 124.50 1.79 e 4396.79
1978 0.00 b 0.00 13.00 94.66 a 504.30 c 664.04 d 818.29 b 878.33 a 753.00 293.00 112.00 0.00 4130.62
1979 0.00 0.00 2.14 b 104.00 346.34 b 666.00 912.50 838.55 a 679.50 262.00 47.31 d 10.00 3868.34
1980 0.00 0.00 0.00 187.50 b 545.50 684.00 941.37 a 924.83 a 636.96 b 207.50 26.90 a 1.50 4156.06
1981 0.00 11.00 36.00 177.50 406.62 a 723.21 b 911.50 882.00 595.00 198.29 b 80.00 0.00 4021.12
1982 0.00 0.00 16.00 129.50 515.50 568.50 891.00 830.00 554.00 334.00 47.50 32.50 3918.50
1983 0.00 0.00 21.50 61.00 k 8.00 z 754.50 1036.50 977.00 646.00 338.00 81.00 0.00 3854.50
1984 0.00 6.00 0.00 117.50 365.50 751.00 917.00 966.50 563.50 349.50 27.50 15.50 4079.50
1985 0.00 a 0.00 25.00 229.50 549.00 638.00 908.00 824.00 623.50 288.50 39.50 0.00 4125.00
1986 0.00 0.00 77.50 206.00 519.00 662.50 935.00 806.50 617.50 311.00 26.00 0.00 z 4161.00
1987 0.00 0.00 69.00 278.00 552.00 873.00 0.00 z 888.50 656.00 192.50 95.50 2.58 a 3607.08
1988 0.00 0.00 21.00 0.00 z 569.50 880.00 1000.50 992.50 655.50 191.50 32.00 1.00 4343.50
1989 4.00 0.00 21.00 107.50 396.50 676.00 924.00 898.50 588.00 280.50 26.50 0.00 3922.50
1990 0.00 0.00 0.00 z 209.50 362.00 695.00 883.50 844.00 695.00 248.50 108.00 1.00 4046.50
1991 0.00 1.00 31.50 212.50 580.00 834.50 926.00 927.00 590.50 251.00 26.00 0.00 4380.00
1992 0.00 0.00 7.50 64.50 437.00 617.50 774.50 753.50 0.00 z 260.50 16.50 0.00 2931.50
1993 0.00 0.00 13.00 0.00 z 386.50 634.50 898.00 949.00 480.00 230.50 25.00 1.00 3617.50
1994 0.00 0.00 20.50 197.00 426.00 741.00 879.00 781.00 711.00 342.50 81.50 7.50 4187.00
1995 0.00 0.00 37.50 74.00 418.50 834.00 967.50 1040.50 575.00 322.50 10.00 0.00 4279.50
1996 0.00 2.00 1.50 81.50 329.00 678.00 828.00 897.50 634.00 285.00 18.00 0.00 3754.50
1997 0.00 1.50 17.00 124.50 262.50 738.00 873.00 805.00 653.00 309.50 13.00 0.00 3797.00
1998 5.00 3.00 60.50 181.50 649.00 747.00 963.00 923.00 784.50 357.50 78.50 50.00 4802.50
1999 0.00 1.50 41.50 185.00 534.48 b 772.76 a 1061.50 883.00 630.00 a 303.50 125.69 a 17.57 a 4556.50
2000 0.00 a 7.50 75.95 a 129.31 a 477.00 712.00 870.77 c 888.09 d 626.79 b 367.98 d 72.86 b 0.00 a 4228.25
2001 0.00 0.00 a 0.00 a 238.97 a 510.97 b 716.40 e 966.34 b 991.43 d 602.50 237.00 i 160.38 d 43.92 a 4230.90
2002 6.00 0.00 5.00 176.00 308.00 739.50 1044.00 880.50 718.00 192.50 31.00 1.00 4101.50
2003 2.00 0.00 40.00 119.00 307.23 c 642.50 893.83 d 948.00 618.50 257.50 54.50 0.00 c 3883.07
2004 0.00 0.50 42.00 201.35 d 373.50 653.50 821.00 768.50 711.50 360.00 95.50 0.50 4027.85
2005 0.00 d 0.00 20.50 185.50 395.00 867.00 983.00 973.50 787.00 387.00 89.50 0.00 4688.00
2006 0.00 0.00 17.00 267.00 511.00 789.50 1045.50 940.50 620.00 219.00 82.00 8.00 4499.50
2007 11.00 0.00 140.53 a 211.00 581.50 851.50 959.50 980.50 749.50 507.50 52.50 0.00 5045.03
2008 0.50 0.00 3.50 194.00 420.50 792.50 960.50 916.00 713.50 328.50 92.50 1.00 4423.00
2009 0.00 6.00 33.50 150.50 383.00 652.00 802.00 765.00 666.50 195.00 123.00 0.00 3776.50
2010 0.00 0.00 53.00 224.00 502.00 742.50 957.00 972.00 565.00 399.50 62.00 0.00 4477.00
2011 0.00 1.50 9.50 86.50 335.00 637.00 976.50 941.50 618.00 335.50 83.50 1.00 4025.50
2012 1.50 0.00 177.22 a 126.50 514.50 743.50 1046.00 893.00 625.00 195.00 i 0.00 z 0.00 z 4127.22
Period of Record Statistics
MEAN 0.70 1.01 24.67 145.24 419.97 704.13 913.93 876.06 624.64 315.13 62.47 4.58 4101.33
S.D. 2.31 3.35 32.11 62.97 91.10 83.12 80.25 83.18 73.36 83.11 39.07 8.70 335.52
SKEW 4.54 5.34 2.47 0.43 0.27 -0.06 0.07 -0.05 -0.09 0.36 0.90 2.97 0.08
MAX 17.00 27.50 177.22 303.00 649.00 880.00 1097.00 1099.00 787.00 550.50 173.00 50.00 5045.03
MIN 0.00 0.00 0.00 24.50 200.50 517.50 755.00 697.50 430.50 124.00 5.00 0.00 3134.00
NO YRS 120 119 118 115 118 119 117 118 119 115 119 114 99