HERMAN, MICHIGAN

Monthly Total Heating Degree Days

(203744)

Base Temperature = 65 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 733.50 531.00 239.00 143.50 166.00 281.00 575.50 1067.50 1485.00 5222.00
1969 1567.50 1389.00 1460.00 750.50 487.73 a 406.50 157.50 86.00 342.50 778.50 1070.00 1444.00 9939.73
1970 1765.00 1523.00 1441.50 806.00 548.00 184.66 a 95.50 121.50 322.00 567.00 1067.50 1482.00 9923.66
1971 1782.00 1435.50 1404.00 843.50 566.00 133.50 190.00 208.00 315.00 460.50 1074.50 1456.00 9868.50
1972 1789.50 1631.00 1461.50 970.50 362.50 255.50 145.50 172.50 402.00 771.50 1100.50 1631.00 10693.50
1973 1501.00 1405.00 988.00 831.00 575.00 151.50 100.50 99.50 401.00 488.00 1063.50 1529.00 9133.00
1974 1692.00 1547.00 1340.50 807.50 559.50 285.00 64.00 161.00 501.00 660.50 1017.00 1305.50 9940.50
1975 1589.50 1343.00 1344.50 1021.00 311.50 170.50 86.50 141.00 443.00 568.50 963.00 1541.73 a 9523.73
1976 1719.00 1272.50 1286.00 745.50 504.00 89.50 98.50 150.50 387.50 846.00 1268.50 1771.00 10138.50
1977 1969.50 1411.50 1030.50 664.50 189.00 236.00 81.00 278.00 349.44 c 659.50 1048.50 1519.00 9436.44
1978 1667.00 1527.00 1352.00 891.00 386.50 221.50 121.50 120.50 248.50 656.50 1092.50 1620.00 9904.50
1979 1882.00 1638.00 1243.00 928.50 578.50 227.50 111.00 155.50 305.00 788.00 1125.50 1366.50 10349.00
1980 1660.00 1577.00 1363.00 787.00 320.00 264.00 60.50 83.50 405.56 c 821.50 1077.00 1573.00 9992.06
1981 1638.50 1288.00 1179.50 749.00 525.50 170.50 92.50 74.50 399.00 763.00 928.00 1450.50 9258.50
1982 1921.00 1495.50 1319.00 969.00 276.00 342.50 73.00 211.50 349.50 613.00 1092.00 1332.50 9994.50
1983 1480.50 1193.50 1180.00 925.50 581.00 193.50 37.00 33.50 287.00 654.00 1029.50 1802.50 9397.50
1984 1742.50 1160.50 1467.00 691.00 515.00 110.00 129.00 81.00 441.00 574.02 a 1039.82 b 1480.50 9431.34
1985 1727.50 1483.00 1114.50 678.10 a 376.00 267.50 109.00 147.50 334.66 a 612.00 1204.14 a 1741.00 9794.90
1986 1589.00 1410.50 1118.50 653.28 a 322.00 221.50 67.00 162.00 321.00 674.50 1175.50 1355.50 9070.28
1987 1454.00 1125.00 1014.50 554.50 332.50 115.50 55.00 128.00 279.50 803.00 1003.50 1293.00 8158.00
1988 1674.00 1578.50 1239.00 737.00 0.00 z 0.00 z 32.50 89.00 283.50 798.50 1030.50 1510.00 8972.50
1989 1415.00 1564.00 1375.00 850.00 429.50 228.50 48.00 87.00 268.50 582.00 1221.50 1760.50 9829.50
1990 1327.00 1303.00 1074.50 672.00 522.00 154.00 103.00 98.00 299.00 696.00 932.50 1486.50 8667.50
1991 1693.00 1257.00 1162.00 632.00 291.00 94.00 83.00 83.50 374.50 701.00 1150.50 1430.00 8951.50
1992 1483.00 1297.00 1281.50 853.00 349.50 252.50 205.50 202.50 314.00 712.50 1121.00 1426.00 9498.00
1993 1540.50 1425.50 1212.50 898.00 443.00 223.50 42.00 0.00 z 425.50 731.00 1156.50 1383.50 9481.50
1994 1929.50 1553.00 1164.00 800.00 408.00 128.00 73.50 134.50 231.00 527.50 954.50 1184.00 9087.50
1995 1485.50 1404.00 1052.00 891.50 366.50 87.50 67.50 25.50 347.00 644.50 1322.50 1560.00 9254.00
1996 1632.50 713.50 n 1410.50 983.00 508.00 140.50 154.50 88.50 310.50 715.50 1250.50 1502.00 8696.00
1997 1726.50 1411.00 1400.50 918.00 711.50 100.00 105.92 a 224.50 323.00 699.50 1150.00 1284.00 10054.42
1998 1532.50 1050.50 1255.50 679.00 322.50 241.00 0.00 z 0.00 z 0.00 z 525.50 942.50 1312.00 7861.00
1999 1634.00 1173.93 a 1136.00 682.22 c 292.00 155.00 38.00 121.93 a 295.00 696.50 831.50 1391.50 8447.58
2000 1628.50 1218.00 c 973.00 859.50 323.50 187.76 a 87.00 0.00 z 351.00 343.50 l 989.50 1694.50 8312.26
2001 0.00 z 1449.00 1254.00 677.00 308.50 154.00 77.50 57.50 304.50 662.00 785.69 a 1318.50 7048.19
2002 1454.50 1259.50 1478.50 852.50 588.50 147.00 34.00 75.00 232.00 859.50 1182.00 1355.50 9518.50
2003 1700.50 1557.50 1316.00 839.50 473.50 205.00 86.00 122.00 297.00 708.50 1087.50 1343.50 9736.50
2004 1806.50 1349.50 1197.00 862.50 518.00 258.00 154.50 267.50 209.00 663.50 992.00 1573.00 9851.00
2005 1725.15 a 1308.00 1399.00 691.50 509.00 80.50 74.50 94.00 190.00 563.00 1040.50 1454.50 9129.65
2006 1265.00 1469.50 1314.50 717.00 489.50 235.00 68.00 155.00 455.00 894.00 1022.50 1323.50 9408.50
2007 1595.00 1663.00 1225.50 998.00 399.00 177.50 141.50 136.50 26.00 z 441.00 k 1112.00 1534.00 8982.00
2008 1541.50 1626.50 1560.50 877.00 605.00 201.00 101.00 100.00 k 159.50 p 675.50 1072.00 1662.50 9922.50
2009 1832.50 1396.50 1300.00 832.50 514.50 259.50 223.50 186.50 202.00 841.00 863.50 1539.00 9991.00
2010 1408.50 1269.50 959.50 604.50 358.00 194.00 42.00 80.50 446.90 a 618.50 1001.50 1535.50 8518.90
2011 1713.50 1415.50 1347.00 916.03 a 507.50 216.50 44.50 97.50 347.50 609.00 1013.50 1371.00 9599.04
2012 1506.50 1276.00 848.50 815.50 345.00 144.00 27.50 141.00 272.50 l 215.50 w 0.00 z 0.00 z 5104.00
Period of Record Statistics
MEAN 1636.92 1398.39 1250.99 803.09 441.60 194.32 93.93 130.47 332.23 677.61 1062.14 1479.87 9528.32
S.D. 160.00 151.59 162.98 114.86 114.69 69.09 47.19 57.20 73.40 104.63 110.35 144.02 554.38
SKEW -0.06 -0.19 -0.42 -0.08 0.00 0.55 0.85 0.63 0.17 0.08 -0.09 0.40 -0.50
MAX 1969.50 1663.00 1560.50 1021.00 711.50 406.50 223.50 278.00 501.00 894.00 1322.50 1802.50 10693.50
MIN 1265.00 1050.50 848.50 554.50 189.00 80.50 27.50 25.50 190.00 460.50 785.69 1184.00 8158.00
NO YRS 43 43 44 45 44 44 44 41 41 42 44 44 35