HERMAN, MICHIGAN

Monthly Total Growing Degree Days

(203744)

Base Temperature = 50 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
1968 0.00 z 0.00 z 0.00 z 23.00 55.00 253.00 393.50 367.00 212.50 102.50 0.00 0.00 1406.50
1969 0.00 0.00 0.00 3.00 143.63 a 107.50 365.00 438.50 190.50 28.50 1.50 0.00 1278.13
1970 0.00 0.00 0.00 60.00 86.50 332.59 a 477.00 389.50 215.50 57.00 0.00 0.00 1618.09
1971 0.00 0.00 0.00 6.00 54.00 384.50 300.50 286.50 234.00 98.50 0.00 0.00 1364.00
1972 0.00 0.00 0.00 2.00 233.50 235.50 367.50 350.50 103.50 22.00 0.00 0.00 1314.50
1973 0.00 0.00 0.00 30.00 48.50 330.50 432.00 452.50 164.00 112.50 0.00 0.00 1570.00
1974 0.00 0.00 0.00 38.50 76.00 216.00 511.00 341.50 61.50 39.00 0.00 0.00 1283.50
1975 0.00 0.00 0.00 1.00 231.50 348.50 509.50 383.50 83.50 61.50 10.50 0.00 a 1629.50
1976 0.00 0.00 1.50 39.50 106.50 409.50 420.00 441.50 190.50 33.00 0.00 0.00 1642.00
1977 0.00 0.00 0.00 82.50 381.00 248.00 501.50 222.00 120.56 c 13.50 4.50 0.00 1573.56
1978 0.00 0.00 0.00 0.00 219.50 270.00 397.50 391.50 252.50 34.50 1.50 0.00 1567.00
1979 0.00 0.00 0.00 8.00 66.00 249.50 431.00 340.00 177.50 9.00 0.00 0.00 1281.00
1980 0.00 0.00 0.00 37.00 237.50 236.50 458.50 430.50 120.00 c 19.00 0.00 0.00 1539.00
1981 0.00 0.00 0.00 11.50 87.50 298.00 433.00 426.50 128.00 15.50 0.00 0.00 1400.00
1982 0.00 0.00 0.00 21.00 230.00 127.00 472.00 302.50 171.50 28.00 1.00 0.00 1353.00
1983 0.00 0.00 0.00 7.50 53.50 333.00 604.00 527.00 261.50 36.00 0.00 0.00 1822.50
1984 0.00 0.00 0.00 14.50 95.00 371.50 363.50 446.50 98.00 52.70 a 0.00 b 0.00 1441.70
1985 0.00 0.00 0.00 100.34 a 132.50 213.50 386.00 345.50 194.48 a 17.50 0.00 a 0.00 1389.83
1986 0.00 0.00 7.00 63.10 a 235.00 252.50 503.00 318.00 170.00 18.50 0.00 0.00 1567.10
1987 0.00 0.00 7.50 83.00 234.00 401.50 525.00 387.50 189.50 10.00 0.00 0.00 1838.00
1988 0.00 0.00 0.00 6.00 0.00 z 0.00 z 601.50 493.00 193.50 31.00 0.00 0.00 1325.00
1989 0.00 0.00 3.50 12.50 151.00 275.00 535.00 447.00 236.50 109.50 0.00 0.00 1770.00
1990 0.00 0.00 6.00 130.00 57.50 326.00 424.50 415.50 194.50 15.00 18.00 0.00 1587.00
1991 0.00 0.00 0.00 71.50 333.00 417.00 451.00 490.00 178.50 19.00 0.00 0.00 1960.00
1992 0.00 0.00 0.00 7.00 230.00 239.50 264.00 293.00 182.50 51.00 0.00 0.00 1267.00
1993 0.00 0.00 0.00 1.50 123.00 262.50 504.00 0.00 z 90.00 13.00 0.00 0.00 994.00
1994 0.00 0.00 0.00 23.50 165.00 376.50 431.50 360.50 266.00 71.00 0.00 0.00 1694.00
1995 0.00 0.00 10.00 0.00 140.50 521.50 501.00 562.50 185.00 63.50 0.00 0.00 1984.00
1996 0.00 0.00 n 0.00 0.00 107.00 386.00 335.00 436.00 197.50 10.00 0.00 0.00 1471.50
1997 0.00 0.00 0.00 1.50 26.50 402.00 405.58 a 264.00 158.00 83.00 0.00 0.00 1340.58
1998 0.00 0.00 0.00 25.50 187.00 299.00 0.00 z 0.00 z 0.00 z 75.00 0.00 0.00 586.50
1999 0.00 0.00 a 2.50 10.00 c 219.50 374.00 589.50 365.80 a 218.00 12.00 11.00 0.00 1802.30
2000 0.00 0.00 c 7.00 4.00 196.00 277.24 a 413.00 0.00 z 167.00 52.00 l 14.00 0.00 1078.24
2001 0.00 z 0.00 0.00 38.00 177.00 410.50 490.00 527.50 188.50 36.00 11.90 a 0.00 1879.40
2002 0.00 0.00 0.00 33.50 80.50 377.50 605.00 432.00 302.00 23.00 0.00 0.00 1853.50
2003 0.00 0.00 1.50 20.00 68.50 274.50 421.50 381.50 219.00 66.00 0.00 0.00 1452.50
2004 0.00 0.00 0.00 10.50 76.50 221.00 341.50 215.50 275.00 28.50 0.00 0.00 1168.50
2005 0.00 a 0.00 0.00 25.50 94.50 454.00 488.00 450.50 316.00 95.00 0.00 0.00 1923.50
2006 0.00 0.00 0.00 12.00 143.00 260.00 490.50 333.00 104.00 18.50 0.00 0.00 1361.00
2007 0.00 0.00 0.00 17.50 168.00 315.50 384.50 375.00 34.00 z 18.00 k 0.00 0.00 1260.50
2008 0.00 0.00 0.00 9.50 41.50 275.50 392.00 218.50 k 61.50 p 33.00 13.50 0.00 765.00
2009 0.00 0.00 0.00 10.50 78.00 258.50 247.50 320.50 269.00 0.00 0.00 0.00 1184.00
2010 0.00 0.00 0.00 46.50 229.00 275.50 503.50 490.50 59.48 a 41.00 0.00 0.00 1645.48
2011 0.00 0.00 0.00 0.00 a 104.00 269.00 536.50 411.00 163.50 108.50 0.00 0.00 1592.50
2012 0.00 0.00 55.50 5.00 180.00 371.00 546.50 365.00 55.50 l 3.50 w 0.00 z 0.00 z 1523.00
Period of Record Statistics
MEAN 0.00 0.00 2.32 25.62 145.07 307.67 448.95 390.68 182.99 43.12 1.99 0.00 1544.52
S.D. 0.00 0.00 8.57 29.67 81.39 82.98 85.73 79.38 62.75 32.16 4.64 0.00 227.85
SKEW 0.00 0.00 5.64 1.69 0.73 0.08 -0.20 -0.09 -0.05 0.85 2.22 0.00 0.25
MAX 0.00 0.00 55.50 130.00 381.00 521.50 605.00 562.50 316.00 112.50 18.00 0.00 1984.00
MIN 0.00 0.00 0.00 0.00 26.50 107.50 247.50 215.50 59.48 0.00 0.00 0.00 1168.50
NO YRS 43 43 44 45 44 44 44 41 41 42 44 44 35