date! ,

Monthly Total Heating Degree Days

(a vali)

Base Temperature = 65 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 974.50 1501.00 2475.50
1972 1772.00 1558.00 1129.50 721.50 240.50 70.00 30.00 69.50 239.00 661.00 1009.00 1627.50 9127.50
1973 1504.00 1260.50 855.00 622.50 318.50 37.00 7.00 7.00 213.50 370.50 0.00 z 1536.50 6732.00
1974 1646.50 1261.00 1047.00 583.00 365.00 85.50 1.50 49.50 284.50 519.00 963.00 1323.00 8128.50
1975 1558.50 1440.50 1338.50 800.00 199.00 82.00 15.00 8.50 304.50 482.00 918.00 1410.50 8557.00
1976 1634.00 1119.50 1095.50 513.00 335.00 45.50 8.00 28.00 221.50 717.00 1147.00 1590.00 8454.00
1977 1946.50 1156.81 a 929.50 418.00 77.50 10.00 10.00 95.50 181.00 601.50 1031.50 1558.00 8015.81
1978 1937.50 1573.50 1154.50 623.00 250.00 64.00 13.50 25.00 133.50 536.50 1063.50 1601.00 8975.50
1979 2045.50 1712.50 1267.50 761.50 406.50 90.50 14.00 84.50 167.50 570.50 1039.50 1251.00 9411.00
1980 1521.00 1450.00 1198.00 556.50 234.00 50.00 4.50 26.50 183.50 651.00 855.50 1445.00 8175.50
1981 1434.50 1162.50 888.00 464.50 294.00 35.50 24.00 40.50 188.50 607.50 838.50 1519.00 7497.00
1982 1971.00 1401.50 1091.00 730.50 200.50 136.00 3.00 47.50 207.00 537.00 1104.00 1318.50 8747.50
1983 1488.50 1180.50 1145.50 792.00 392.50 90.00 0.00 0.00 210.50 551.00 972.50 2025.50 8848.50
1984 1633.50 1162.00 1372.00 661.00 353.50 23.50 12.50 16.00 314.00 514.50 990.00 1464.00 8516.50
1985 1733.00 1383.50 883.50 477.50 158.50 132.00 17.00 98.00 289.50 0.00 z 1336.00 1814.00 8322.50
1986 1493.00 1442.00 1016.00 583.00 274.00 48.50 7.50 93.50 188.00 537.00 1170.00 1299.00 8151.50
1987 1369.50 961.50 975.50 450.00 135.50 30.00 11.00 77.00 191.00 715.50 864.00 1311.00 7091.50
1988 1790.00 1601.00 991.50 646.00 0.00 z 10.50 12.50 39.00 167.50 676.00 985.50 1410.00 8329.50
1989 1288.50 1577.00 1199.00 611.50 265.50 76.50 5.00 14.00 205.00 484.00 1105.00 1595.00 8426.00
1990 1199.00 1214.50 992.50 618.50 333.50 55.50 25.50 31.00 147.00 575.50 913.50 1559.00 7665.00
1991 1716.00 1001.00 1013.00 534.00 245.50 19.00 16.50 27.00 215.50 600.50 1261.00 1341.50 7990.50
1992 1301.50 1118.00 989.50 752.00 219.00 68.50 69.00 96.00 229.50 556.00 1077.00 1461.50 7937.50
1993 1665.50 1459.50 1247.50 713.50 307.00 114.50 4.00 25.50 323.50 590.50 1102.00 1428.00 8981.00
1994 1908.50 1559.00 961.50 627.00 212.50 15.00 22.00 54.50 141.50 445.50 871.50 1326.00 8144.50
1995 1526.50 1262.00 1052.50 774.00 345.00 63.00 14.50 14.50 254.50 581.50 1181.00 1374.50 8443.50
1996 1757.50 1340.50 0.00 z 741.00 409.00 67.50 17.00 14.50 264.00 525.50 1275.00 1703.00 8114.50
1997 1775.00 1306.00 1121.00 755.00 426.50 6.00 28.50 49.50 142.00 500.50 1152.50 1231.50 8494.00
1998 1502.00 970.50 1205.50 565.50 125.50 112.50 4.50 4.00 84.50 453.50 879.00 1228.50 7135.50
1999 1689.50 1063.00 1007.50 588.00 231.00 88.50 3.50 14.00 214.50 555.50 689.00 1262.00 7406.00
2000 1536.00 1082.00 816.00 624.00 203.50 82.50 27.50 15.00 190.00 454.00 1139.00 1847.50 8017.00
2001 1458.00 1546.00 1249.50 553.00 217.50 56.50 4.50 17.00 203.50 526.00 600.00 1191.00 7622.50
2002 1296.00 1152.50 1343.00 643.00 403.00 32.00 8.50 35.50 170.50 783.00 1082.50 1247.50 8197.00
2003 1577.00 1407.00 1108.00 577.50 306.00 78.50 3.00 15.00 227.00 476.00 1051.00 1299.50 8125.50
2004 1622.50 1415.00 895.50 551.50 317.00 87.50 23.00 92.50 105.00 481.00 846.00 1302.50 7739.00
2005 1593.50 1076.50 1116.00 458.50 310.00 8.50 10.50 28.50 97.50 483.00 867.50 1515.00 7565.00
2006 1163.50 1302.00 1090.50 456.50 251.00 29.00 2.00 16.50 265.50 618.50 909.00 1193.00 7297.00
2007 1489.50 1532.50 911.00 691.50 136.00 26.50 2.00 14.00 169.00 392.00 939.50 1542.50 7846.00
2008 0.00 z 1539.50 1196.00 726.50 336.50 20.50 4.50 10.50 165.50 518.00 959.00 1630.00 7106.50
2009 1741.00 1255.00 1088.00 675.00 0.00 z 0.00 z 0.00 z 55.00 110.50 749.00 739.00 1598.00 8010.50
2010 1749.00 1457.50 963.30 d 402.50 295.00 25.00 0.00 5.50 193.50 419.00 956.50 1633.00 8099.80
2011 1773.00 1383.41 a 1203.50 676.50 318.55 b 61.50 0.00 7.50 233.50 424.00 900.00 1248.50 8229.96
2012 1346.00 1183.50 606.50 475.00 150.50 33.50 0.00 40.00 189.00 639.50 913.00 1385.00 6961.50
2013 1542.00 1323.26 a 1271.57 d 39.00 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 4136.83
Period of Record Statistics
MEAN 1602.32 1317.94 1073.80 614.50 271.77 56.71 12.16 36.65 200.63 551.97 991.96 1455.90 8114.89
S.D. 210.83 192.67 159.74 110.42 87.43 34.56 12.67 29.63 57.55 96.50 153.88 189.07 591.57
SKEW 0.00 -0.03 -0.37 -0.14 -0.19 0.45 2.40 0.89 0.16 0.43 -0.08 0.80 0.05
MAX 2045.50 1712.50 1372.00 800.00 426.50 136.00 69.00 98.00 323.50 783.00 1336.00 2025.50 9411.00
MIN 1163.50 961.50 606.50 402.50 77.50 6.00 0.00 0.00 84.50 370.50 600.00 1191.00 6961.50
NO YRS 41 42 41 41 39 40 40 41 41 40 41 42 35