GRAND RAPIDS FRS LAB, MINNESOTA

Monthly Total Growing Degree Days

(213303)

Base Temperature = 50 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1915 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 199.82 b 361.50 361.50 190.34 a 26.00 0.00 0.00 1139.17
1916 0.00 0.00 0.00 10.50 104.88 a 260.00 712.50 494.00 191.50 32.00 0.00 0.00 1805.38
1917 0.00 0.00 0.00 0.00 97.00 281.90 a 603.00 364.00 165.00 0.00 0.00 0.00 a 1510.90
1918 0.00 g 0.00 0.00 5.00 95.00 323.50 473.50 430.50 37.76 a 12.50 0.00 0.00 1377.76
1919 0.00 0.00 0.00 9.00 174.50 512.00 527.00 417.50 219.50 27.00 0.00 0.00 1886.50
1920 0.00 0.00 0.00 0.00 140.00 385.00 454.00 439.00 319.00 88.50 0.00 0.00 1825.50
1921 0.00 0.00 0.00 42.00 264.00 527.50 721.50 489.50 257.50 22.00 0.00 0.00 2324.00
1922 0.00 0.00 0.00 8.50 294.50 444.00 497.00 538.37 a 270.50 81.63 a 0.00 0.00 2134.50
1923 0.00 0.00 0.00 34.00 197.50 515.00 638.00 347.50 226.00 50.00 0.00 0.00 2008.00
1924 0.00 0.00 0.00 19.00 19.00 273.00 456.00 367.00 114.50 48.50 0.00 0.00 1297.00
1925 0.00 0.00 2.00 31.00 167.00 362.00 499.00 564.00 249.00 0.00 0.00 0.00 1874.00
1926 0.00 0.00 0.00 38.50 246.50 270.00 561.00 484.50 120.00 a 18.00 0.00 0.00 1738.50
1927 0.00 0.00 0.00 9.00 53.50 347.00 490.00 334.80 a 305.89 b 19.00 0.00 a 0.00 1559.19
1928 0.00 0.00 0.00 8.28 a 197.00 257.50 516.00 445.00 147.93 a 41.50 0.00 a 0.00 1613.21
1929 0.00 0.00 0.00 4.00 126.50 287.00 529.00 422.50 182.00 28.00 0.00 0.00 1579.00
1930 0.00 0.00 a 0.00 b 12.41 a 134.00 365.69 a 551.00 539.00 207.50 90.50 3.75 b 0.00 a 1903.85
1931 0.00 0.00 a 0.00 a 30.00 127.50 461.00 565.50 418.50 340.50 90.50 0.50 0.00 b 2034.00
1932 0.00 0.00 0.00 14.00 189.00 469.50 536.82 a 480.50 169.00 14.00 0.00 0.00 1872.82
1933 0.00 0.00 0.00 6.21 a 190.50 554.50 595.20 a 420.57 a 311.00 13.00 0.00 a 0.00 2090.97
1934 0.00 0.00 0.00 34.00 304.32 a 395.50 508.00 383.00 147.50 87.32 a 0.00 0.00 1859.63
1935 0.00 0.00 0.00 8.50 67.00 260.50 667.50 472.50 140.50 26.35 a 0.00 u 0.00 a 1642.85
1936 0.00 0.00 0.00 0.00 244.38 a 308.50 696.00 504.50 278.50 29.50 0.00 0.00 2061.38
1937 0.00 0.00 0.00 0.00 a 167.50 346.50 566.78 a 624.50 218.00 37.72 a 0.00 a 0.00 1961.00
1938 0.00 0.00 5.00 0.00 u 98.00 369.00 515.50 589.50 182.00 96.00 8.00 0.00 1863.00
1939 0.00 0.00 b 0.00 16.00 219.50 370.50 566.86 c 500.00 266.50 36.50 0.00 0.00 1975.86
1940 0.00 a 0.00 0.00 10.86 a 105.50 300.50 538.50 410.50 300.50 55.50 0.00 0.00 1721.86
1941 0.00 0.00 0.00 a 76.00 263.50 424.50 593.00 432.93 b 251.50 28.00 0.00 0.00 2069.43
1942 0.00 0.00 0.00 112.50 94.50 309.83 a 439.50 451.57 a 179.00 58.50 0.00 0.00 b 1645.39
1943 0.00 0.00 0.00 10.50 104.50 389.50 600.00 452.60 a 134.50 66.00 0.00 0.00 1757.60
1944 0.00 0.00 0.00 3.50 227.50 378.00 494.50 464.50 171.50 37.20 a 0.00 0.00 1776.70
1945 0.00 0.00 4.13 a 6.00 30.48 a 227.50 447.50 447.50 170.50 36.00 0.00 0.00 1369.62
1946 0.00 0.00 27.50 36.50 99.00 344.00 514.00 379.23 a 178.00 30.50 0.00 0.00 1608.73
1947 0.00 0.00 0.00 11.50 58.50 269.00 565.50 633.00 232.00 157.07 a 0.00 0.00 1926.57
1948 0.00 0.00 0.00 a 56.50 144.00 335.50 555.50 506.00 347.50 19.00 0.00 0.00 1964.00
1949 0.00 0.00 0.00 56.00 173.00 437.00 540.00 574.53 a 136.50 50.50 0.00 0.00 1967.53
1950 0.00 0.00 0.00 0.00 122.50 337.00 456.00 326.50 231.00 28.93 a 0.00 0.00 1501.93
1951 0.00 0.00 0.00 16.00 241.50 291.00 502.72 a 349.30 c 141.00 50.00 0.00 0.00 1591.52
1952 0.00 0.00 0.00 116.00 142.00 452.50 528.50 393.70 a 230.50 3.50 0.00 0.00 1866.70
1953 0.00 0.00 0.00 0.00 117.00 398.50 476.00 514.00 173.28 a 138.50 1.00 0.00 1818.28
1954 0.00 0.00 0.00 7.00 81.50 397.00 519.50 425.50 163.00 25.00 0.00 0.00 1618.50
1955 0.00 0.00 0.00 65.50 233.00 394.50 649.50 572.47 a 186.00 58.50 0.00 0.00 a 2159.47
1956 0.00 0.00 0.00 0.00 107.00 441.00 382.50 394.00 133.97 a 99.50 10.50 0.00 1568.47
1957 0.00 0.00 0.00 60.50 130.00 323.50 621.50 436.50 155.50 35.50 0.00 0.00 1763.00
1958 0.00 0.00 0.00 28.00 157.00 184.00 443.50 435.50 208.50 44.00 0.00 0.00 1500.50
1959 0.00 a 0.00 0.00 8.50 185.00 409.50 533.50 550.50 223.00 18.50 0.00 a 0.00 1928.50
1960 0.00 0.00 0.00 7.00 161.00 298.50 506.00 532.50 242.50 55.00 0.00 0.00 1802.50
1961 0.00 0.00 3.00 0.50 125.00 434.50 511.00 555.00 243.00 72.00 0.00 0.00 1944.00
1962 0.00 0.00 0.00 29.00 210.50 342.00 413.00 460.00 144.50 89.00 0.00 0.00 1688.00
1963 0.00 0.00 3.50 23.50 124.50 439.50 582.50 450.50 261.50 206.00 0.00 0.00 2091.50
1964 0.00 0.00 0.00 25.00 239.50 355.50 568.50 342.50 157.50 46.00 2.50 0.00 1737.00
1965 0.00 0.00 0.00 16.50 166.50 335.50 456.00 415.50 60.50 38.00 0.00 0.00 1488.50
1966 0.00 0.00 0.00 2.00 115.00 394.00 626.00 403.00 190.00 29.00 0.00 0.00 1759.00
1967 0.00 0.00 8.00 3.50 85.50 347.50 477.50 400.00 250.50 36.00 0.00 0.00 1608.50
1968 0.00 0.00 4.00 36.50 89.50 334.50 486.50 444.50 213.00 77.00 0.00 0.00 1685.50
1969 0.00 0.00 0.00 17.50 162.00 194.00 513.50 591.50 241.00 24.50 0.00 0.00 1744.00
1970 0.00 0.00 0.00 31.00 117.50 466.50 622.50 525.00 275.00 52.00 0.00 0.00 2089.50
1971 0.00 0.00 0.00 21.50 105.50 490.50 418.50 420.00 254.00 81.00 0.00 0.00 1791.00
1972 0.00 0.00 0.00 11.50 312.50 399.00 463.50 451.50 123.50 33.50 0.00 0.00 1795.00
1973 0.00 0.00 0.00 25.50 125.50 404.00 517.50 543.00 178.50 93.50 0.00 0.00 1887.50
1974 0.00 0.00 0.00 48.00 93.50 381.50 640.50 396.00 122.50 39.00 0.00 0.00 1721.00
1975 0.00 0.00 0.00 0.00 233.50 365.00 665.00 472.00 133.50 83.00 8.50 0.00 1960.50
1976 0.00 0.00 0.00 47.50 188.50 483.00 562.00 540.50 252.00 53.00 0.00 0.00 2126.50
1977 0.00 0.00 0.00 104.00 429.50 419.50 593.00 315.00 161.00 17.00 0.50 0.00 2039.50
1978 0.00 0.00 0.00 18.00 260.00 384.00 509.00 495.00 304.00 41.00 3.50 0.00 2014.50
1979 0.00 0.00 0.00 11.50 103.50 344.50 562.00 389.50 241.50 18.00 0.00 0.00 1670.50
1980 0.00 0.00 0.00 94.50 343.50 407.50 606.50 508.50 177.00 32.00 0.00 0.00 2169.50
1981 0.00 0.00 1.50 10.50 175.50 359.00 558.50 526.00 199.50 18.50 0.00 0.00 1849.00
1982 0.00 0.00 0.00 45.50 243.00 257.00 585.50 454.00 214.50 22.00 0.00 0.00 1821.50
1983 0.00 0.00 0.00 13.50 69.00 376.00 654.50 621.00 235.50 22.50 0.00 0.00 1992.00
1984 0.00 0.00 0.00 9.00 109.00 414.00 551.00 608.50 120.50 87.00 0.00 0.00 a 1899.00
1985 0.00 0.00 0.00 73.00 228.00 235.00 520.00 361.50 197.00 9.00 0.00 0.00 1623.50
1986 0.00 0.00 a 1.00 22.00 195.00 367.50 564.00 344.50 142.00 24.50 0.00 0.00 1660.50
1987 0.00 0.00 1.00 90.50 222.50 488.50 610.50 436.00 208.50 11.00 0.00 0.00 2068.50
1988 0.00 0.00 0.00 17.00 326.50 525.50 660.00 517.50 203.00 38.50 0.00 0.00 2288.00
1989 0.00 0.00 0.00 10.50 192.50 361.00 630.50 484.00 200.50 63.00 0.00 0.00 1942.00
1990 0.00 0.00 0.00 92.00 105.00 420.50 520.50 500.00 238.50 4.50 4.00 0.00 1885.00
1991 0.00 0.00 0.00 66.00 353.00 495.00 529.00 590.50 199.00 11.50 0.00 0.00 2244.00
1992 0.00 0.00 0.00 17.50 246.00 308.00 326.50 362.50 142.50 49.50 0.00 0.00 1452.50
1993 0.00 0.00 0.00 1.00 138.50 301.50 489.50 515.00 79.50 18.00 0.00 0.00 a 1543.00
1994 0.00 0.00 0.00 20.50 238.00 425.50 490.00 410.50 262.50 49.50 0.00 0.00 1896.50
1995 0.00 0.00 0.00 0.00 138.00 582.00 513.50 580.50 220.00 42.00 0.00 0.00 2076.00
1996 0.00 0.00 0.00 3.00 116.50 415.50 479.00 545.00 224.50 26.00 0.00 0.00 1809.50
1997 0.00 a 0.00 0.00 2.00 69.00 504.50 531.00 423.50 280.50 103.50 0.00 0.00 1914.00
1998 0.00 0.00 2.50 33.50 310.50 361.00 544.50 572.50 333.50 41.50 0.00 0.00 2199.50
1999 0.00 0.00 1.50 30.50 225.00 432.00 639.50 493.50 184.50 16.00 6.00 0.00 2028.50
2000 0.00 0.00 1.50 30.50 192.50 288.50 573.50 502.50 171.00 52.00 5.00 0.00 1817.00
2001 0.00 0.00 0.00 48.00 193.50 446.50 598.00 584.00 228.50 30.50 9.50 0.00 2138.50
2002 0.00 0.00 0.00 50.00 121.50 518.00 691.50 526.00 342.00 11.00 0.00 0.00 2260.00
2003 0.00 0.00 0.50 41.00 145.50 405.50 593.00 651.50 271.00 82.00 0.00 0.00 2190.00
2004 0.00 0.00 0.00 12.50 62.50 305.50 501.00 333.50 347.50 37.50 0.00 0.00 1600.00
2005 0.00 0.00 0.00 50.00 147.50 429.00 604.00 486.00 309.00 40.00 0.00 0.00 2065.50
2006 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 39.50 1.50 0.00 41.00
2007 0.00 0.00 10.50 53.00 249.50 503.50 614.50 487.00 242.50 69.00 0.00 0.00 2229.50
2008 0.00 z 0.00 0.00 5.50 76.00 356.00 522.50 507.00 223.50 18.00 13.00 0.00 1721.50
2009 0.00 0.00 0.00 20.00 94.50 349.50 390.50 407.50 390.00 0.00 0.00 0.00 1652.00
2010 0.00 0.00 6.00 35.00 234.50 361.50 597.50 588.00 107.50 82.50 5.50 0.00 2018.00
2011 0.00 0.00 0.00 9.00 135.00 343.00 659.00 536.50 211.50 122.00 0.00 0.00 2016.00
2012 0.00 0.00 43.00 17.50 181.00 455.00 695.50 495.50 208.00 19.00 0.00 0.00 2114.50
2013 0.00 0.00 0.00 j 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 0.00 1.31 26.58 167.31 377.33 545.85 470.98 209.99 46.25 0.86 0.00 1860.29
S.D. 0.00 0.00 5.38 27.15 78.12 83.39 78.66 79.98 66.94 35.03 2.45 0.00 225.20
SKEW 0.00 0.00 6.22 1.48 0.71 0.03 -0.08 0.11 0.19 1.65 3.17 0.00 -0.14
MAX 0.00 0.00 43.00 116.00 429.50 582.00 721.50 651.50 390.00 206.00 13.00 0.00 2324.00
MIN 0.00 0.00 0.00 0.00 19.00 184.00 326.50 315.00 37.76 0.00 0.00 0.00 1297.00
NO YRS 96 98 96 95 96 97 97 97 97 98 97 98 92