date! ,

Monthly Total Heating Degree Days

(a vali)

Base Temperature = 65 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
1971 0.00 z 0.00 z 0.00 z 0.00 z 274.00 f 31.50 54.00 69.50 213.50 400.50 984.50 1487.00 3240.50
1972 1825.00 1542.00 1273.00 737.00 209.50 99.50 44.00 72.50 259.50 685.50 1011.00 1659.00 9417.50
1973 1556.00 1306.00 821.50 657.50 380.00 47.00 17.50 15.50 251.50 410.00 966.00 1550.00 7978.50
1974 1697.50 1413.50 1175.00 614.00 401.50 126.00 8.00 83.50 342.50 519.50 956.00 1332.50 8669.50
1975 1630.00 1380.50 1379.00 829.50 245.00 101.00 26.50 35.00 303.50 473.00 925.50 1538.00 8866.50
1976 1816.50 1211.50 1179.50 514.50 312.00 28.00 12.00 48.00 265.00 755.00 1243.50 1824.00 9209.50
1977 2060.00 1321.50 925.50 430.50 117.50 61.00 8.00 109.50 211.50 582.50 1045.00 1599.50 8472.00
1978 1848.00 1550.00 1198.00 686.00 236.50 113.50 44.50 42.50 161.50 563.50 1096.50 1682.50 9223.00
1979 2028.00 1603.00 1229.00 760.00 438.00 114.00 26.00 85.50 163.50 h 434.50 j 1059.50 1336.00 8679.00
1980 1703.00 1534.50 1304.00 565.00 241.00 114.00 14.50 29.50 249.50 662.00 949.00 1511.50 8877.50
1981 1538.63 a 1252.00 984.00 572.59 a 336.00 75.00 22.00 35.00 238.50 641.50 850.00 1518.50 8063.72
1982 2033.50 1461.00 1232.50 743.00 160.00 181.50 6.00 87.00 246.50 510.50 1108.00 1306.50 9076.00
1983 1496.00 1148.50 1016.50 759.00 385.50 108.50 11.50 0.50 210.50 533.50 967.50 1921.00 8558.50
1984 1679.00 1110.50 1277.50 550.00 341.00 27.00 26.50 18.00 310.00 455.00 996.50 1489.00 8280.00
1985 1702.50 1415.50 936.72 a 494.50 174.50 169.50 20.00 86.00 278.00 578.00 1232.00 1804.00 8891.22
1986 1521.50 1423.85 a 996.00 479.50 235.00 68.50 6.50 81.50 234.50 555.50 1118.00 1379.50 8099.85
1987 1437.00 1008.50 857.50 418.50 181.50 37.00 5.00 48.00 160.00 699.50 882.00 1344.00 7078.50
1988 1802.00 1599.00 1083.00 579.00 140.00 27.00 8.50 31.50 80.50 m 698.00 1006.50 1504.50 8479.00
1989 1451.50 1638.00 1279.50 663.50 284.50 95.00 0.00 z 24.00 211.50 528.00 1152.50 1795.50 9123.50
1990 1284.00 1291.50 972.50 603.00 336.00 52.00 26.50 23.50 172.00 591.50 884.00 1549.00 7785.50
1991 1723.50 1235.00 1013.00 533.00 224.00 15.50 29.50 23.00 260.50 604.00 1267.00 1460.50 8388.50
1992 1453.50 1154.00 1030.00 727.50 220.50 120.00 79.00 116.00 207.00 587.00 1065.50 1425.00 8185.00
1993 1605.50 1394.50 1154.00 685.50 294.50 127.50 14.00 44.50 370.00 616.50 1114.00 1418.00 8838.50
1994 1981.00 1542.00 1005.00 634.50 232.50 43.00 16.50 75.00 88.00 p 451.00 871.50 1285.00 8137.00
1995 1538.00 1388.50 1015.50 778.50 316.50 58.50 18.50 3.50 258.00 549.50 1235.50 1547.00 8707.50
1996 1812.00 1441.00 1330.00 761.00 350.50 76.50 27.00 16.00 205.50 530.00 1228.50 1604.00 9382.00
1997 1750.00 1287.50 1138.50 684.50 409.50 24.00 48.00 75.50 132.00 489.50 1120.50 1239.00 8398.50
1998 1467.50 958.00 1069.50 467.00 107.00 124.50 4.50 4.00 95.00 468.00 874.50 1284.00 6923.50
1999 1684.00 1114.50 1015.50 539.00 203.50 99.00 3.00 13.00 219.00 537.00 754.00 1310.50 7492.00
2000 1599.00 1159.00 824.00 629.00 228.00 118.00 14.50 16.50 206.00 420.00 1019.00 1825.00 8058.00
2001 1448.00 1518.50 1170.00 567.00 223.00 81.50 11.50 12.00 211.50 550.50 608.50 871.00 f 6402.00
2002 0.00 z 0.00 z 194.00 y 656.50 428.00 49.00 3.00 14.50 155.50 760.50 1023.00 1295.50 4385.50
2003 1600.50 1441.50 1127.50 597.00 283.50 68.00 11.50 8.50 206.50 514.50 1016.50 1286.00 8161.50
2004 1743.50 1300.00 999.50 541.00 338.50 125.00 30.00 104.50 98.50 494.00 864.00 1420.50 8059.00
2005 1603.50 1153.00 1114.50 449.00 333.50 2.50 5.00 24.00 85.00 448.00 891.00 1428.50 7537.50
2006 1187.00 1343.00 1026.00 408.50 249.00 32.00 0.50 5.00 235.00 623.00 894.00 1163.00 7166.00
2007 1499.00 1535.00 915.50 600.00 165.50 23.00 12.50 31.00 153.00 394.50 976.50 1559.50 7865.00
2008 1616.00 1495.00 1222.00 670.00 345.50 57.50 8.50 18.50 163.00 520.50 952.50 1636.00 8705.00
2009 1859.50 1299.31 b 1077.50 595.00 265.00 130.50 47.50 54.00 73.50 694.00 719.00 1514.50 8329.31
2010 1672.97 a 1340.00 802.50 385.00 260.50 69.50 0.00 13.50 246.50 448.50 965.00 1571.50 7775.47
2011 1730.00 1351.50 1190.50 646.50 302.50 64.50 1.50 4.50 221.00 422.50 832.76 a 1268.00 8035.76
2012 1389.50 1148.50 617.00 505.00 163.00 38.00 0.00 32.00 208.50 0.00 z 0.00 z 0.00 z 4101.50
Period of Record Statistics
MEAN 1651.83 1345.25 1074.44 602.84 270.71 76.76 18.87 41.31 213.59 549.14 993.32 1491.81 8310.45
S.D. 197.45 169.61 164.48 112.13 86.10 43.29 17.24 32.81 65.96 97.74 145.62 181.83 642.61
SKEW 0.09 -0.28 -0.42 -0.05 0.09 0.37 1.46 0.72 -0.10 0.40 -0.16 0.46 -0.25
MAX 2060.00 1638.00 1379.00 829.50 438.00 181.50 79.00 116.00 370.00 760.50 1267.00 1921.00 9417.50
MIN 1187.00 958.00 617.00 385.00 107.00 2.50 0.00 0.50 73.50 394.50 608.50 1163.00 6923.50
NO YRS 40 40 40 41 41 42 41 42 39 40 41 40 34