IRON MTN KINGSFORD WWTP, MICHIGAN

Monthly Total Growing Degree Days

(204090)

Base Temperature = 50 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 78.50 161.00 377.50 528.00 522.50 159.50 75.50 1.00 0.00 1903.50
1900 0.00 0.00 0.00 111.50 210.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 322.00
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 116.50 i 72.50 0.00 0.00 c 72.50
1902 0.00 0.00 a 0.00 a 11.90 a 195.00 257.31 d 551.00 367.19 b 151.03 a 11.50 0.54 b 0.00 1545.46
1903 0.00 0.00 0.00 a 13.00 175.50 322.50 505.50 331.50 235.00 34.00 12.50 0.00 1629.50
1904 0.00 0.00 0.00 12.00 168.43 a 360.00 84.98 b 36.50 5.00 42.00 0.50 0.00 709.42
1905 0.00 0.00 6.50 12.00 95.00 333.00 454.50 481.00 283.00 108.00 0.00 a 0.00 a 1773.00
1906 0.00 0.00 0.00 31.50 136.00 373.00 505.50 528.00 357.00 75.00 0.00 c 0.00 e 2006.00
1907 0.00 0.00 0.00 0.00 22.22 a 443.50 509.50 443.00 250.00 33.07 a 0.00 0.00 1701.28
1908 0.00 0.00 0.00 34.50 216.50 397.80 e 592.62 a 496.50 483.50 106.84 c 0.00 0.00 2328.26
1909 0.00 0.00 0.00 0.00 180.46 c 497.14 b 526.50 555.23 c 252.50 75.84 c 5.17 a 0.00 f 2092.85
1910 0.00 e 0.00 62.52 a 10.50 f 95.58 a 382.00 j 307.00 r 496.00 235.50 132.78 a 0.00 a 0.00 b 1022.38
1911 0.00 0.00 0.00 g 57.32 b 335.83 a 561.00 577.00 433.50 238.00 22.00 0.00 0.00 2224.65
1912 0.00 0.00 0.00 24.50 174.50 359.00 542.00 351.50 307.50 74.50 0.00 0.00 a 1833.50
1913 0.00 a 0.00 0.00 85.50 148.00 512.00 516.15 a 555.00 228.62 a 86.00 0.50 0.00 a 2131.77
1914 0.00 0.00 0.00 13.50 278.50 371.00 632.50 475.33 a 255.52 a 163.30 c 0.00 0.00 2189.65
1915 0.00 0.00 0.00 165.50 95.50 256.00 470.17 a 353.50 287.50 37.50 0.00 0.00 1665.67
1916 0.00 0.00 0.00 6.00 141.50 281.50 760.00 566.50 236.50 82.50 0.00 0.00 b 2074.50
1917 0.00 0.00 0.00 a 4.50 96.00 272.50 595.00 369.00 185.50 7.00 1.00 0.00 1530.50
1918 0.00 0.00 5.50 4.50 220.00 336.50 541.50 525.00 125.00 55.00 0.00 0.00 e 1813.00
1919 0.00 c 0.00 0.00 11.00 195.50 589.50 682.00 478.50 302.50 56.00 0.00 f 0.00 2315.00
1920 0.00 0.00 0.00 0.00 150.50 483.50 484.00 468.00 350.50 242.00 0.00 z 0.00 2178.50
1921 0.00 0.00 0.00 135.00 313.00 627.00 807.00 519.50 378.00 33.00 0.00 0.00 2812.50
1922 0.00 0.00 0.00 10.00 324.00 429.00 502.00 511.00 350.50 103.50 0.00 0.00 d 2230.00
1923 0.00 0.00 0.00 41.50 181.00 515.50 582.00 405.00 280.50 52.00 0.00 0.00 2057.50
1924 0.00 b 0.00 0.00 6.00 40.00 320.50 441.50 417.50 149.00 101.50 8.00 0.00 1484.00
1925 0.00 0.00 2.50 64.00 140.50 483.50 533.00 550.00 330.00 5.00 0.00 0.00 2108.50
1926 0.00 0.00 0.00 29.50 216.00 284.50 529.00 448.50 170.50 36.50 0.00 0.00 1714.50
1927 0.00 0.00 4.50 29.00 44.00 296.50 448.00 339.50 371.00 68.50 0.00 0.00 1601.00
1928 0.00 0.00 0.00 11.50 170.00 267.00 534.00 485.00 79.00 97.00 0.00 0.00 1643.50
1929 0.00 0.00 3.50 21.50 141.50 317.00 525.00 443.00 262.50 56.00 0.00 0.00 1770.00
1930 0.00 0.00 0.00 37.00 235.00 448.50 522.87 a 544.50 307.50 103.00 4.66 a 0.00 2203.02
1931 0.00 0.00 0.00 52.00 189.00 484.00 634.98 a 427.00 436.00 113.50 12.50 0.00 z 2348.98
1932 0.00 i 0.00 0.00 15.00 186.50 451.00 575.50 535.00 231.00 27.00 0.00 0.00 2021.00
1933 0.00 0.00 0.00 13.00 214.00 595.00 611.50 479.00 371.00 20.00 5.50 0.00 2309.00
1934 0.00 0.00 0.00 25.00 321.50 500.00 574.50 394.50 213.00 95.00 0.00 0.00 2123.50
1935 0.00 0.00 0.00 22.50 79.50 263.00 682.00 499.00 179.50 62.50 0.00 0.00 a 1788.00
1936 0.00 0.00 0.00 12.50 252.00 332.00 652.50 506.50 340.50 52.91 b 0.00 0.00 2148.91
1937 0.00 0.00 0.00 1.50 176.00 361.00 574.00 592.00 212.50 40.50 0.00 0.00 1957.50
1938 0.00 0.00 7.50 71.50 172.00 374.00 557.50 548.50 175.50 116.00 24.00 0.00 2046.50
1939 0.00 0.00 0.00 34.50 238.50 422.50 560.50 479.00 298.00 63.50 0.00 0.00 2096.50
1940 0.00 0.00 0.00 2.50 99.50 377.50 529.00 433.50 301.00 74.50 0.00 0.00 1817.50
1941 0.00 0.00 0.00 88.00 278.50 489.50 576.00 425.50 295.00 31.50 6.50 0.00 2190.50
1942 0.00 0.00 0.00 136.50 115.50 359.00 465.00 443.50 229.50 50.50 1.00 0.00 1800.50
1943 0.00 0.00 0.00 18.00 129.50 450.50 601.50 480.50 135.50 71.50 0.00 a 0.00 1887.00
1944 0.00 0.00 0.00 2.00 264.00 397.50 508.50 506.00 225.52 a 52.00 13.50 0.00 1969.02
1945 0.00 a 0.00 22.00 39.50 44.50 289.00 416.50 444.50 219.00 52.00 2.50 0.00 1529.50
1946 0.00 a 0.00 26.50 36.00 118.50 359.50 499.00 381.50 203.50 106.50 0.00 0.00 1731.00
1947 0.00 0.00 0.00 18.00 79.00 306.00 571.50 694.00 320.50 228.00 0.00 0.00 2217.00
1948 0.00 0.00 0.00 50.50 120.50 365.50 562.50 518.00 336.50 19.00 0.50 0.00 1973.00
1949 0.00 0.00 0.00 62.50 198.00 559.50 604.00 540.50 188.00 106.50 0.00 0.00 2259.00
1950 0.00 0.00 0.00 0.00 126.50 386.00 443.00 321.00 205.50 111.50 0.00 0.00 1593.50
1951 0.00 0.00 x 0.00 23.50 204.00 f 302.50 519.50 354.00 168.50 59.42 a 0.00 0.00 1427.42
1952 0.00 0.00 0.00 108.62 a 128.00 418.50 561.50 447.50 259.00 4.50 0.00 0.00 1927.62
1953 0.00 0.00 0.00 6.50 166.00 408.00 518.50 524.00 235.50 140.50 12.00 0.00 2011.00
1954 0.00 0.00 0.00 14.50 86.50 452.50 490.00 406.50 149.50 32.50 0.00 0.00 1632.00
1955 0.00 0.00 0.00 52.00 234.50 392.50 692.50 586.00 237.00 77.00 0.00 0.00 2271.50
1956 0.00 0.00 0.00 0.00 139.50 430.00 401.00 432.50 143.00 115.50 22.00 i 0.00 1661.50
1957 0.00 0.00 0.00 90.00 150.50 383.50 578.50 454.00 178.00 22.50 0.00 g 0.00 1857.00
1958 0.00 0.00 0.00 45.50 112.00 231.50 470.00 447.50 221.50 49.00 0.00 0.00 1577.00
1959 0.00 0.00 0.00 11.00 j 120.50 t 441.00 535.50 578.00 261.50 20.50 0.00 0.00 1836.50
1960 0.00 0.00 0.00 30.50 173.50 305.50 457.50 469.50 236.00 50.50 0.00 0.00 1723.00
1961 0.00 0.00 0.00 10.50 114.50 365.50 507.88 a 486.50 268.00 94.00 0.00 0.00 1846.88
1962 0.00 0.00 0.00 34.00 285.50 343.50 427.50 444.00 150.00 98.00 0.00 0.00 1782.50
1963 0.00 0.00 3.00 29.00 137.00 431.00 547.50 403.50 208.50 203.00 2.00 0.00 1964.50
1964 0.00 0.00 0.00 29.00 261.50 402.00 585.00 367.00 196.50 68.50 20.50 0.00 1930.00
1965 0.00 0.00 0.00 18.00 227.50 327.00 416.50 431.00 145.50 74.00 3.00 0.00 1642.50
1966 0.00 0.00 1.00 0.00 115.00 466.00 658.00 433.00 229.50 48.50 0.00 0.00 1951.00
1967 0.00 0.00 4.00 20.50 79.00 404.50 470.50 391.50 238.00 58.00 2.00 0.00 1668.00
1968 0.00 0.00 3.00 25.50 84.50 372.50 517.00 453.00 278.50 127.00 0.00 0.00 1861.00
1969 0.00 0.00 0.00 19.00 189.50 193.50 501.50 585.50 244.50 47.00 0.00 0.00 1780.50
1970 0.00 0.00 0.00 75.50 141.50 428.50 604.50 482.50 269.00 59.00 0.00 0.00 2060.50
1971 0.00 0.00 0.00 11.50 81.50 492.50 442.50 413.00 280.50 136.00 0.00 0.00 1857.50
1972 0.00 0.00 0.00 4.00 260.50 326.50 478.50 474.50 170.00 30.50 0.00 0.00 1744.50
1973 0.00 0.00 0.00 34.50 76.00 401.50 559.50 562.00 229.50 135.50 0.00 0.00 1998.50
1974 0.00 0.00 0.00 52.50 102.00 298.50 580.00 450.00 108.00 44.00 1.50 0.00 1636.50
1975 0.00 0.00 0.00 4.50 291.50 424.00 625.50 493.50 134.50 72.50 19.00 0.00 2065.00
1976 0.00 0.00 0.00 64.00 130.50 493.00 553.50 488.50 237.50 53.00 0.00 0.00 2020.00
1977 0.00 0.00 0.00 116.50 406.50 350.00 626.00 382.50 206.00 14.00 4.50 0.00 2106.00
1978 0.00 0.00 0.00 2.50 263.00 373.00 492.50 502.50 301.50 41.50 6.50 0.00 1983.00
1979 0.00 0.00 0.00 14.00 105.50 350.50 564.00 432.00 273.00 31.50 0.00 0.00 1770.50
1980 0.00 0.00 0.00 43.00 284.00 361.50 589.50 533.00 224.00 24.00 0.00 0.00 2059.00
1981 0.00 0.00 2.50 19.50 126.00 397.00 539.50 497.50 180.00 15.00 0.00 0.00 1777.00
1982 0.00 0.00 0.00 29.00 308.50 210.50 569.50 411.50 199.00 54.00 3.50 0.00 1785.50
1983 0.00 0.00 0.00 17.00 63.00 397.50 702.00 629.50 301.50 43.92 a 0.00 b 0.00 b 2154.42
1984 0.00 0.00 0.00 b 22.24 a 106.00 443.00 517.18 a 563.50 179.00 74.29 b 0.00 a 0.00 1905.22
1985 0.00 0.00 0.00 98.00 195.50 275.69 a 489.50 422.00 211.00 9.00 0.00 0.00 1700.69
1986 0.00 0.00 0.00 71.50 245.50 340.50 594.00 381.50 236.00 28.50 0.00 0.00 1897.50
1987 0.00 z 0.00 1.00 73.50 229.50 502.00 617.50 479.00 243.50 7.50 5.50 0.00 2159.00
1988 0.00 0.00 0.00 6.50 240.50 494.00 605.00 592.00 208.50 21.00 0.00 0.00 2167.50
1989 0.00 0.00 2.00 17.50 187.50 335.50 596.00 511.50 224.50 83.50 0.00 0.00 1958.00
1990 0.00 0.00 0.00 117.00 81.50 394.50 492.50 462.50 220.00 17.50 9.50 0.00 1795.00
1991 0.00 0.00 2.00 72.00 357.50 520.50 539.00 583.50 233.00 15.00 0.00 0.00 2322.50
1992 0.00 0.00 0.00 17.00 0.00 z 330.50 379.00 394.00 200.50 53.50 0.00 0.00 1374.50
1993 0.00 0.00 0.00 4.50 153.00 321.00 552.50 539.00 105.00 15.00 0.00 0.00 1690.00
1994 0.00 0.00 a 0.00 22.00 193.00 468.00 505.50 427.00 288.00 60.00 0.00 0.00 1963.50
1995 0.00 a 0.00 0.50 0.00 114.00 571.00 570.50 622.00 218.50 65.00 0.00 0.00 2161.50
1996 0.00 0.00 0.00 5.50 116.50 419.00 447.50 521.00 276.00 33.50 0.00 0.00 1819.00
1997 0.00 0.00 0.00 11.50 51.00 479.00 516.50 393.00 272.50 94.00 1.50 0.00 1819.00
1998 0.00 0.00 6.00 27.50 332.50 403.50 585.50 580.50 364.50 55.50 0.00 0.00 2355.50
1999 0.00 0.00 0.00 23.00 239.50 452.50 657.00 483.00 250.50 10.00 12.00 0.00 2127.50
2000 0.00 0.00 6.00 10.00 228.00 364.50 489.00 491.35 a 212.07 a 81.50 6.50 0.00 1888.92
2001 0.00 0.00 0.00 34.00 218.00 434.50 555.00 625.00 234.00 40.50 8.50 0.00 2149.50
2002 0.00 0.00 0.00 0.00 z 97.00 459.50 715.00 531.00 338.50 39.00 0.00 0.00 2180.00
2003 0.00 0.00 0.00 z 30.50 115.00 370.00 569.00 582.50 290.00 64.00 0.00 0.00 2021.00
2004 0.00 0.00 0.00 34.50 113.00 326.50 481.50 361.50 369.00 44.00 0.00 0.00 1730.00
2005 0.00 0.00 0.50 34.50 154.00 573.50 633.50 560.50 378.00 108.00 0.00 0.00 2442.50
2006 0.00 0.00 0.00 37.00 222.00 430.00 684.00 515.50 197.50 44.00 0.00 0.00 2130.00
2007 0.00 0.00 6.50 38.00 240.00 501.50 587.50 0.00 z 341.50 159.00 0.00 0.00 1874.00
2008 0.00 0.00 0.00 28.50 86.00 417.00 583.50 511.50 295.00 34.50 k 17.00 0.00 1938.50
2009 0.00 0.00 0.00 22.00 128.50 361.50 407.50 440.00 352.00 4.00 0.00 0.00 1715.50
2010 0.00 0.00 0.50 52.00 295.00 406.00 638.00 610.00 160.50 57.50 0.00 0.00 2219.50
2011 0.00 0.00 0.00 2.78 c 150.50 372.50 684.50 576.00 227.00 116.00 0.00 0.00 2129.28
2012 0.00 0.00 75.00 17.50 275.00 489.50 713.50 519.50 8.00 z 0.00 z 0.00 z 0.00 z 2090.00
Period of Record Statistics
MEAN 0.00 0.00 2.29 33.99 174.45 397.54 548.39 476.33 243.36 65.66 2.17 0.00 1921.16
S.D. 0.00 0.00 9.76 33.74 79.34 86.63 90.14 85.57 75.93 45.21 4.78 0.00 272.45
SKEW 0.00 0.00 6.14 1.61 0.48 0.23 -0.84 -1.06 0.18 1.34 2.63 0.00 -0.49
MAX 0.00 0.00 75.00 165.50 406.50 627.00 807.00 694.00 483.50 242.00 24.00 0.00 2812.50
MIN 0.00 0.00 0.00 0.00 22.22 193.50 84.98 36.50 5.00 4.00 0.00 0.00 709.42
NO YRS 110 112 111 110 110 111 111 111 111 111 108 110 93