WATERVILLE PUMP STN, MAINE

Monthly Total Heating Degree Days

(179151)

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
1958 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 25.26 d 26.50 188.50 563.50 820.00 1526.00 3149.76
1959 1435.50 1361.50 1078.00 596.00 233.00 137.00 4.28 b 16.50 159.50 486.50 790.00 1104.12 a 7401.89
1960 1324.50 1066.50 1147.00 639.50 165.00 51.00 7.00 16.53 a 174.00 548.00 769.00 1356.50 7264.53
1961 1600.00 1172.00 1060.00 693.62 a 350.41 c 69.50 30.48 a 30.48 a 69.50 390.00 746.50 1214.00 7426.50
1962 1432.20 a 1366.08 b 952.50 647.50 376.00 65.00 52.50 21.50 242.00 523.50 874.50 1281.85 a 7835.13
1963 1367.50 1413.00 1038.00 658.00 293.50 51.00 11.50 66.43 c 262.50 330.50 714.00 1475.00 7680.93
1964 130.50 z 826.00 j 1027.28 b 657.50 234.50 80.50 8.00 85.00 250.00 488.00 844.00 1300.00 4974.78
1965 1460.10 a 1230.50 1006.50 678.00 284.00 75.00 20.00 31.00 a 194.50 532.00 877.50 1222.00 7611.10
1966 1350.00 1151.50 959.00 692.00 388.02 a 72.00 8.00 16.00 224.50 483.50 715.00 1196.00 7255.52
1967 1278.50 1368.50 1170.00 713.50 479.50 46.55 a 3.50 9.50 151.50 450.53 a 917.00 1213.50 7802.08
1968 1554.50 1381.00 974.00 541.00 345.00 119.00 26.00 57.00 104.00 392.00 935.50 1277.00 7706.00
1969 1357.50 1151.50 1066.50 659.50 326.50 83.50 27.50 21.00 198.00 519.00 763.50 1143.26 b 7317.26
1970 1556.50 1165.50 1005.50 655.50 238.50 81.00 7.00 16.50 167.00 413.50 784.00 1483.50 7574.00
1971 1620.00 1203.00 1040.00 677.00 296.00 50.50 5.00 37.50 131.50 332.50 896.00 1289.50 7578.50
1972 1375.00 1330.50 1163.00 759.00 288.00 72.00 10.00 40.00 156.00 606.00 945.50 1359.50 8104.50
1973 1350.50 1203.00 877.50 611.79 b 369.00 76.50 1.00 8.00 237.32 b 486.59 c 857.00 1033.33 a 7111.53
1974 1347.50 1183.50 1025.00 604.50 445.00 64.00 10.50 14.50 171.92 d 632.50 804.31 a 1113.50 7416.73
1975 1304.50 1199.50 1051.50 719.48 a 178.77 a 91.61 b 0.00 42.50 217.00 449.50 704.50 1293.73 a 7252.59
1976 1563.00 1125.50 1011.50 552.00 302.00 52.00 22.50 43.00 192.50 599.00 903.50 1435.30 a 7801.80
1977 1564.00 1198.00 793.50 617.50 253.68 a 102.50 17.50 37.50 206.00 485.67 a 734.50 1272.50 7282.85
1978 1423.50 1293.00 1071.50 677.00 240.50 63.50 22.50 36.00 259.00 490.50 873.33 c 1277.50 7727.83
1979 1328.50 1332.00 871.50 645.50 268.50 62.50 16.50 58.00 188.00 523.50 719.00 1196.00 7209.50
1980 1347.50 1285.00 1092.00 644.50 292.95 a 143.00 21.50 15.00 248.50 657.50 924.00 1464.00 8135.45
1981 1666.00 945.50 958.00 620.50 266.50 62.00 16.50 46.50 218.00 606.00 856.00 1176.50 7438.00
1982 1658.50 1289.00 1060.50 735.50 296.00 128.00 25.00 62.00 166.00 505.50 744.50 1082.50 7753.00
1983 1315.50 1084.46 b 925.00 598.50 336.50 62.50 6.50 12.00 134.50 523.00 809.00 1291.00 7098.46
1984 1521.00 994.50 1194.00 616.00 352.00 93.00 10.00 15.00 234.00 458.50 801.50 1170.00 7459.50
1985 1586.00 1162.00 991.50 628.00 291.06 d 112.50 3.50 40.50 137.00 463.00 831.00 1356.50 7602.56
1986 1281.85 a 1189.00 965.50 514.50 323.50 101.00 46.50 52.18 a 244.50 552.00 934.50 1188.00 7393.03
1987 1367.10 a 1226.50 944.47 a 510.00 314.00 69.31 a 20.50 61.00 184.66 a 473.50 824.48 a 1142.00 7137.52
1988 1379.00 1184.50 991.50 637.00 243.00 133.00 8.50 43.50 179.50 595.00 731.50 1265.50 7391.50
1989 1330.00 1214.23 b 1096.37 a 704.00 217.50 62.50 3.50 41.50 162.00 477.00 884.50 1701.50 7894.60
1990 1136.00 1110.00 982.00 621.00 357.50 72.00 12.00 10.50 177.00 414.50 742.00 1021.50 6656.00
1991 1381.50 1054.50 917.00 554.50 227.00 62.00 23.50 16.00 227.50 391.00 755.00 1296.50 6906.00
1992 1402.75 a 1196.00 1075.00 723.00 312.50 47.50 35.50 23.50 180.50 557.00 884.00 1181.50 7618.75
1993 1307.00 1409.00 1095.50 624.00 307.00 119.00 23.00 14.50 212.00 660.50 855.00 1207.50 7834.00
1994 1809.00 1487.50 1095.00 689.50 409.00 66.50 0.00 40.00 205.00 497.50 761.00 1163.50 8223.50
1995 1299.50 1337.50 1056.00 771.50 385.50 54.00 11.00 22.00 276.00 415.00 928.00 1383.00 7939.00
1996 1484.50 1300.00 1135.00 678.50 403.50 72.50 12.50 25.50 185.00 582.00 930.50 1033.50 7843.00
1997 1465.00 1195.00 1167.00 746.50 470.50 91.50 11.00 24.00 209.50 567.00 911.50 1249.50 8108.00
1998 1353.50 1043.00 999.00 630.00 194.50 122.00 14.00 19.50 131.00 514.00 815.00 1060.50 6896.00
1999 1478.50 1110.31 b 981.00 612.00 241.00 39.31 a 9.76 d 24.00 86.90 a 608.00 722.00 1123.23 a 7036.01
2000 1506.00 1287.91 a 910.50 687.50 398.87 a 124.14 a 48.05 a 34.00 238.50 543.50 781.20 e 1330.00 7890.17
2001 1521.50 1317.00 1162.50 715.50 278.40 e 67.00 30.00 17.57 a 145.00 474.50 747.50 1088.50 7564.97
2002 1248.50 1154.50 1060.50 651.21 a 407.50 159.50 29.50 14.00 124.50 599.50 931.00 1271.50 7651.71
2003 1637.00 1392.00 1161.00 759.50 397.00 111.00 15.00 31.00 125.00 541.00 807.00 1219.00 8195.50
2004 1692.50 1316.00 1020.00 681.00 325.00 159.00 16.00 28.00 169.50 516.50 844.50 1307.50 8075.50
2005 1537.50 1217.00 1174.50 633.50 499.50 115.50 14.50 8.00 116.00 467.50 802.50 1245.00 7831.00
2006 1222.50 1171.50 1022.50 603.00 304.00 62.50 1.00 65.00 172.50 535.50 697.00 1044.50 6901.50
2007 1368.50 1410.50 1104.50 704.00 344.00 91.50 26.50 35.50 170.50 385.50 875.00 1375.00 7891.00
2008 1324.00 1230.00 1157.50 598.50 353.50 77.00 1.00 34.50 178.50 558.00 792.00 1265.00 7569.50
2009 1641.50 1256.00 1103.00 569.00 322.50 136.50 44.50 28.50 192.00 619.00 727.00 1228.50 7868.00
2010 1322.50 1046.00 833.50 511.00 254.50 89.00 8.50 17.00 150.00 520.00 831.50 1221.50 6805.00
2011 1463.50 1295.00 1068.50 650.00 312.50 106.00 3.50 7.00 107.00 459.00 706.00 1089.00 7267.00
2012 1344.50 1131.00 861.50 582.50 265.50 119.50 2.00 3.50 208.00 296.50 j 0.00 z 0.00 z 4518.00
Period of Record Statistics
MEAN 1433.83 1225.24 1032.42 646.31 315.91 86.99 16.20 30.24 182.56 508.58 818.06 1246.41 7542.99
S.D. 138.26 117.43 94.20 62.98 74.56 30.92 12.80 17.88 46.55 77.48 74.51 136.01 382.25
SKEW 0.49 -0.05 -0.38 -0.19 0.36 0.63 1.01 0.87 -0.17 -0.21 0.09 0.75 -0.26
MAX 1809.00 1487.50 1194.00 771.50 499.50 159.50 52.50 85.00 276.00 660.50 945.50 1701.50 8223.50
MIN 1136.00 945.50 793.50 510.00 165.00 39.31 0.00 3.50 69.50 330.50 697.00 1021.50 6656.00
NO YRS 53 53 54 54 54 54 55 55 55 54 54 54 52