HOUGHTON FAA AIRPORT, MICHIGAN

Monthly Total Heating Degree Days

(203908)

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
1952 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 139.50 318.50 805.00 1011.50 1241.50 3516.00
1953 1493.50 1347.50 1227.00 928.00 532.00 207.00 96.50 72.50 358.50 505.00 876.50 1315.50 8959.50
1954 1610.00 1159.50 1372.50 895.50 718.50 182.00 124.50 160.00 380.00 702.50 921.00 1340.50 9566.50
1955 1520.50 1402.50 1418.50 620.00 398.50 143.50 37.00 35.00 336.00 590.00 1104.50 1504.50 9110.50
1956 1423.00 1393.50 1386.00 941.00 623.00 168.50 158.00 109.00 425.00 457.00 1000.50 1364.00 9448.50
1957 1745.00 1403.00 1298.50 798.00 505.00 245.50 65.50 134.00 380.00 628.50 1032.00 1353.00 9588.00
1958 1415.50 1456.00 1166.50 772.00 572.00 314.00 117.00 153.34 c 293.50 556.00 952.00 1609.50 9377.34
1959 1761.32 a 1533.50 1298.50 865.00 426.50 188.50 58.50 56.00 274.50 750.00 1263.00 1208.00 9683.32
1960 1488.50 1406.50 1469.50 837.50 479.00 225.50 118.50 77.50 318.00 602.50 942.50 1506.00 9471.50
1961 1654.50 1254.50 1184.50 880.50 546.00 215.00 65.00 63.00 291.50 585.00 979.50 1402.00 9121.00
1962 1666.50 1504.00 1213.50 911.50 413.50 233.50 119.00 112.00 386.00 575.00 949.00 1445.50 9529.00
1963 1818.50 1630.50 1290.00 790.50 523.50 206.00 75.00 148.00 311.50 311.00 847.00 1547.00 9498.50
1964 1362.00 1371.50 1401.50 843.50 365.00 248.50 53.00 205.00 368.50 649.50 950.00 1497.50 9315.50
1965 1630.50 1526.00 1464.00 905.50 424.00 236.00 151.50 170.00 458.50 638.50 1023.50 1258.50 9886.50
1966 1686.00 1383.00 1178.50 915.00 609.50 161.00 38.00 161.00 296.00 668.00 1080.00 1410.50 9586.50
1967 1518.00 1608.00 1295.00 874.00 655.50 196.00 117.50 185.50 276.50 706.00 1117.00 1350.50 9899.50
1968 1597.50 1537.00 1146.50 764.00 550.50 249.00 111.50 145.00 243.50 560.50 1015.00 1389.00 9309.00
1969 1466.50 1315.50 1351.00 767.00 504.50 369.50 114.50 39.00 290.50 753.00 1003.00 1355.50 9329.50
1970 1685.00 1536.50 1370.00 848.50 626.50 197.00 60.00 84.50 303.00 547.50 1016.50 1383.00 9658.00
1971 1697.00 1400.50 1335.50 876.50 563.00 156.50 133.50 174.00 258.00 441.50 1012.00 1345.92 a 9393.92
1972 1703.00 1595.00 1469.50 981.00 386.50 247.00 117.00 143.50 370.71 b 743.00 1048.50 1539.00 10343.71
1973 1417.50 1358.00 995.00 785.50 548.50 174.50 55.00 41.00 316.50 453.50 996.00 1437.00 8578.00
1974 1609.00 1488.50 1316.00 839.50 547.00 211.00 43.00 121.00 459.00 648.50 969.50 1254.50 9506.50
1975 1497.50 1291.50 1294.00 966.00 294.00 200.50 59.00 85.00 396.00 558.50 909.00 1441.00 8992.00
1976 1638.50 1244.50 1256.57 b 713.00 481.00 96.00 52.50 95.50 356.00 766.50 1164.50 1663.50 9528.07
1977 1849.00 1381.50 1058.00 680.00 242.50 195.50 66.50 188.50 315.00 611.50 987.50 1410.50 8986.00
1978 1579.00 1432.00 1279.50 880.50 381.00 223.00 96.00 91.00 280.50 630.00 1023.00 1478.50 9374.00
1979 1766.00 1649.00 1297.00 907.00 572.50 195.00 60.50 120.00 287.00 736.00 1033.50 1258.50 9882.00
1980 1528.50 1487.00 1326.50 754.00 334.00 245.50 38.50 47.50 357.50 798.00 1008.00 1479.00 9404.00
1981 1525.50 1289.00 1159.00 751.00 463.50 209.00 65.50 36.00 365.00 736.00 852.00 1341.00 8792.50
1982 861.00 p 1461.50 1303.00 924.50 375.00 297.50 61.00 187.50 355.50 617.50 1069.50 1280.50 7933.00
1983 1431.50 1166.50 1210.00 903.00 614.50 195.50 32.50 14.00 257.00 643.00 975.50 1646.00 9089.00
1984 1654.00 1159.50 1433.50 743.00 492.00 133.50 53.50 34.00 353.50 523.50 996.00 1390.00 8966.00
1985 1605.00 1478.50 1107.50 694.50 392.50 242.50 71.00 126.50 308.00 607.00 1134.00 1591.00 9358.00
1986 1493.50 1389.00 1154.00 672.50 316.00 206.00 52.50 103.00 332.00 651.50 1126.00 1275.00 8771.00
1987 1359.00 1107.50 1052.50 570.00 378.00 88.50 31.50 82.00 213.50 735.50 926.00 1205.50 7749.50
1988 1594.00 1556.50 1241.00 761.00 315.00 137.50 16.50 75.00 263.00 763.00 965.00 1424.00 9111.50
1989 1364.50 1506.00 1386.00 867.50 386.00 240.00 30.50 78.50 240.00 579.00 1145.00 1652.00 9475.00
1990 1297.00 1293.50 1114.50 716.00 519.00 163.00 59.00 73.00 300.50 685.00 892.50 1397.00 8510.00
1991 1613.00 1244.50 1173.00 653.50 338.00 98.50 63.00 67.50 361.00 746.00 1115.00 1347.50 8820.50
1992 1424.00 1263.50 1257.00 872.00 374.00 250.50 183.50 160.00 300.52 a 686.50 1044.00 1340.50 9156.02
1993 1463.50 1379.00 1236.50 884.50 484.00 231.00 40.50 62.00 414.50 749.00 1092.00 1324.00 9360.50
1994 1863.50 1566.00 1169.50 843.50 437.00 136.00 91.50 121.50 202.50 516.00 897.50 1168.50 9013.00
1995 1404.00 0.00 z 1132.50 947.00 440.00 102.50 51.50 16.00 343.00 634.50 1221.50 1447.50 7740.00
1996 1631.50 1519.00 1416.50 978.50 523.00 148.50 158.50 66.00 281.50 628.50 1130.50 1383.50 9865.50
1997 1569.63 a 1345.04 a 1302.00 867.50 605.00 88.00 96.00 123.00 245.00 656.68 a 1066.00 1177.50 9141.35
1998 1364.00 972.50 1133.00 612.00 291.00 184.50 44.95 a 19.00 281.50 526.00 891.72 a 1277.20 a 7597.37
1999 1555.50 1158.00 1130.98 a 695.00 362.00 137.00 28.00 82.00 274.00 692.00 820.50 1293.00 8227.98
2000 1512.80 a 1230.83 c 973.50 802.50 378.00 240.50 93.00 66.50 333.62 a 540.00 961.50 1622.00 8754.75
2001 1331.45 a 1412.96 a 1287.53 a 781.03 a 395.50 214.66 a 94.50 59.00 298.00 676.00 747.32 b 1190.92 a 8488.87
2002 1344.50 1173.50 1446.00 906.72 a 619.50 199.50 42.50 68.50 221.00 817.00 1104.00 1275.50 9218.22
2003 1587.00 1525.00 1397.50 922.00 479.00 223.50 77.50 64.00 267.50 680.50 1009.50 1266.50 9499.50
2004 1698.50 1297.00 1197.00 860.00 590.00 267.00 147.00 210.50 175.00 612.00 916.00 1435.50 9405.50
2005 1606.00 1262.00 1331.50 714.50 519.00 131.00 82.00 71.50 174.00 557.00 1024.50 1344.00 8817.00
2006 1236.00 1398.00 1180.00 691.50 444.00 159.50 47.00 74.50 339.00 753.00 895.00 1186.50 8404.00
2007 1425.00 1402.50 1113.00 840.00 373.00 147.50 81.50 92.50 267.00 503.50 1008.00 1403.00 8656.50
2008 1451.50 1512.50 1408.00 812.50 603.50 195.50 71.00 78.50 279.50 625.50 985.50 1565.50 9589.00
2009 1715.50 1408.00 1269.50 864.00 529.50 264.00 169.50 153.50 163.50 783.00 790.50 1422.00 9532.50
2010 1431.00 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 z 0.00 z 1431.00
2011 1582.50 1294.00 1269.00 830.00 501.50 244.50 29.50 40.50 289.00 523.50 906.50 1259.50 8770.00
2012 1366.50 1171.00 799.00 783.50 338.00 113.50 10.85 a 76.50 366.50 419.50 k 0.00 z 0.00 z 5025.35
Period of Record Statistics
MEAN 1547.94 1379.97 1253.26 818.72 469.47 196.96 77.61 98.99 309.51 634.32 999.05 1385.10 9186.91
S.D. 144.00 145.17 134.52 97.43 107.07 56.86 40.89 50.55 64.22 103.72 101.36 127.06 513.42
SKEW 0.11 -0.38 -0.68 -0.52 0.06 0.19 0.74 0.41 0.01 -0.46 0.07 0.40 -0.83
MAX 1863.50 1649.00 1469.50 981.00 718.50 369.50 183.50 210.50 459.00 817.00 1263.00 1663.50 10343.71
MIN 1236.00 972.50 799.00 570.00 242.50 88.00 10.85 14.00 163.50 311.00 747.32 1168.50 7597.37
NO YRS 59 58 59 59 59 59 59 60 60 59 59 59 56