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 201303
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
1940 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 0.00 z 0.00
1941 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 0.00 z 0.00
1942 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 0.00 z 0.00
1943 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 0.00 z 0.00
1944 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 0.00 z 0.00
1945 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 0.00 z 0.00
1946 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 0.00 z 0.00
1947 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 0.00 z 0.00
1948 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 0.00 z 0.00
1949 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 0.00 z 0.00
1950 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 0.00 z 0.00
1951 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 0.00 z 0.00
1952 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 0.00 z 0.00
1953 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 0.00 z 0.00
1954 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 0.00 z 0.00
1955 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 0.00 z 0.00
1956 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 0.00 z 0.00
1957 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 0.00 z 0.00
1958 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 0.00 z 0.00
1959 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 0.00 z 0.00
1960 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 0.00 z 0.00
1961 0.00 z 0.00 z 0.00 z 448.50 l 376.00 34.50 11.00 5.00 251.00 512.00 1047.50 1658.50 3895.50
1962 1865.00 1590.81 a 1258.00 786.00 260.00 79.62 d 33.38 e 21.81 d 254.50 455.00 887.00 1466.09 b 8957.22
1963 1946.50 1504.50 1009.00 575.50 350.00 52.00 5.50 18.50 126.72 a 234.50 896.50 1769.00 8488.22
1964 1538.00 1380.50 1396.00 637.50 210.50 78.00 1.50 90.50 264.00 553.50 1022.07 a 1762.87 a 8934.94
1965 1941.00 1628.00 1604.00 724.00 276.00 64.00 13.95 a 53.00 464.00 529.50 1100.00 1339.00 9736.45
1966 2168.40 b 1559.50 1072.60 a 858.00 412.00 72.00 0.00 73.00 195.50 551.28 a 1188.00 1555.50 9705.78
1967 1708.50 1680.50 1211.00 710.00 479.00 97.00 41.00 55.80 a 163.50 619.47 b 1080.50 1502.00 9348.27
1968 1791.00 1620.00 947.50 620.50 393.50 71.50 40.50 48.00 189.00 532.50 1029.50 1699.46 c 8982.96
1969 1981.00 1444.50 1436.50 617.00 299.00 179.00 31.50 3.00 190.00 710.00 1056.00 1505.00 9452.50
1970 1998.00 1529.00 1407.50 781.50 371.50 52.50 6.50 14.50 230.50 596.50 1143.50 1687.50 9819.00
1971 2017.50 1479.50 1239.00 665.00 359.00 41.50 48.00 54.00 216.00 516.00 1091.50 1668.50 9395.50
1972 2003.00 1792.50 1317.00 793.50 210.50 65.50 36.50 60.50 281.00 689.00 1151.50 1854.00 10254.50
1973 1614.00 1364.50 888.00 662.50 298.50 59.50 27.00 4.00 271.00 428.50 1104.00 1661.50 8383.00
1974 1890.50 1516.00 1344.50 679.00 436.50 80.50 1.50 80.00 322.50 503.00 1019.46 b 1327.50 9200.96
1975 1691.50 1501.00 1430.50 886.50 250.00 90.00 14.50 23.00 263.50 486.50 1000.00 1526.50 9163.50
1976 1756.00 1219.50 1213.00 499.50 270.00 31.00 4.28 b 20.00 184.50 709.00 1239.50 1825.26 b 8971.53
1977 2140.03 a 1267.30 e 983.00 464.00 80.00 23.04 b 7.00 70.50 189.00 554.50 1134.00 1783.00 8695.37
1978 2025.00 1676.23 b 1235.00 777.69 d 219.00 76.00 16.00 18.50 164.50 533.50 1174.50 1727.50 9643.42
1979 2168.50 1753.00 1289.00 903.21 b 489.50 81.50 9.50 62.00 147.50 633.00 1093.50 1308.00 9938.21
1980 1755.50 1578.00 1395.50 535.50 180.00 47.00 3.50 24.50 242.00 659.00 926.00 1558.00 8904.50
1981 1565.50 1237.00 943.50 541.50 281.50 47.00 6.00 10.00 241.50 627.00 839.00 1622.50 7962.00
1982 2157.50 1503.50 1282.50 735.00 193.00 135.00 1.00 52.00 245.50 555.50 1158.00 1337.50 9356.00
1983 1526.00 1194.00 1076.00 691.00 336.00 81.50 10.00 0.00 221.00 580.50 1017.00 2041.00 8774.00
1984 1724.00 1140.00 1340.50 569.00 300.50 36.00 9.00 10.50 318.00 509.50 1017.50 1645.00 8619.50
1985 1822.50 1520.50 1010.50 536.00 140.50 149.50 7.50 63.50 300.50 580.50 1386.50 1870.33 a 9388.33
1986 1534.50 1487.50 1046.50 554.50 237.50 35.50 0.00 60.00 239.00 521.00 1186.50 1337.50 8240.00
1987 1449.50 1027.00 975.50 367.50 167.92 a 21.50 7.50 31.50 147.00 658.00 900.50 1344.50 7097.92
1988 1800.50 1610.50 1096.00 569.50 82.50 15.50 0.00 25.50 159.50 671.00 1087.50 1540.50 8658.50
1989 1558.50 1748.00 1326.00 715.50 218.50 75.50 0.00 14.00 188.50 552.50 1199.50 1850.50 9447.00
1990 1317.00 1321.50 1017.00 641.50 319.50 42.50 4.00 26.00 147.00 586.00 921.50 1622.50 7966.00
1991 1779.00 1229.00 1055.00 546.00 226.50 16.50 6.50 7.00 243.00 611.00 1237.50 1460.00 8417.00
1992 1466.00 1178.00 1043.00 711.00 220.00 100.00 63.00 67.00 206.00 595.50 1133.50 1598.50 8381.50
1993 1760.00 1477.50 1212.50 656.50 292.50 140.50 27.00 26.00 316.00 613.00 1149.00 1508.00 9178.50
1994 2097.00 1616.00 1075.50 647.50 226.00 26.50 9.00 51.50 127.50 466.00 906.00 1324.50 8573.00
1995 1645.50 1454.50 1097.00 782.50 299.00 43.00 7.50 2.00 235.50 625.00 1252.00 1594.50 9038.00
1996 1971.00 1524.00 1422.00 813.50 350.00 50.50 7.50 0.50 228.00 554.00 1345.00 1750.50 10016.50
1997 1884.00 1386.00 1280.50 763.00 375.50 5.50 33.00 41.50 95.00 499.50 1164.50 1257.00 8785.00
1998 1618.00 1001.50 1127.00 471.50 132.50 113.00 1.00 0.00 84.50 493.50 973.50 1360.50 7376.50
1999 1746.00 1166.00 1042.00 576.00 212.50 64.50 1.50 7.50 237.50 575.50 767.50 1305.00 7701.50
2000 1660.50 1241.50 869.00 617.00 240.77 a 104.50 24.00 10.50 202.50 464.00 1059.50 1941.50 8435.27
2001 1497.00 1621.00 1269.00 634.00 230.00 72.41 a 12.00 6.00 203.28 a 534.00 701.50 1281.00 8061.19
2002 1417.00 1124.50 1406.00 751.50 459.00 31.00 4.00 23.00 149.00 828.50 1125.50 0.00 z 7319.00
2003 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 0.00 z 0.00
2004 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 0.00 z 0.00
2005 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 0.00 z 0.00
2006 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 0.00 z 0.00
2007 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 0.00 z 0.00
2008 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 1588.50 1588.50
2009 1689.50 f 0.00 z 0.00 z 0.00 z 216.00 m 100.50 h 0.00 z 0.00 z 0.00 z 651.50 f 812.50 1654.50 2467.00
2010 1779.00 1528.50 956.19 b 472.00 348.50 57.00 q 0.00 r 9.50 o 301.80 e 515.67 e 1042.50 1651.27 a 8595.43
2011 1911.15 a 1470.54 b 1384.15 a 726.60 e 308.00 g 83.50 h 2.98 e 0.00 k 175.00 j 391.50 f 998.57 b 1295.28 a 7789.27
2012 1465.55 b 1316.81 b 790.50 b 598.89 c 243.83 e 65.40 e 0.00 g 18.00 h 242.31 d 644.44 e 1060.56 c 1524.34 b 7952.63
2013 1737.66 c 1528.50 1481.00 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 4747.16
Period of Record Statistics
MEAN 1775.31 1438.63 1184.47 656.02 280.78 66.24 13.87 31.80 220.22 565.17 1061.46 1575.90 8886.23
S.D. 222.87 197.14 192.08 120.42 98.13 37.84 15.17 25.85 69.32 94.14 142.14 197.06 716.72
SKEW 0.02 -0.40 0.01 -0.05 0.17 0.91 1.41 0.52 0.76 -0.38 -0.27 0.16 -0.37
MAX 2168.50 1792.50 1604.00 903.21 489.50 179.00 63.00 90.50 464.00 828.50 1386.50 2041.00 10254.50
MIN 1317.00 1001.50 790.50 367.50 80.00 5.50 0.00 0.00 84.50 234.50 701.50 1257.00 7097.92
NO YRS 45 45 45 44 44 43 43 42 44 44 46 46 40