GRAND LAKE 6 SSW, COLORADO

Monthly Total Heating Degree Days

(053500)

Base Temperature = 65 F

File last updated on Apr 4, 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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 311.50 419.00 847.00 1380.50 1576.50 4534.50
1949 1811.50 1483.50 1210.50 908.50 655.50 431.00 257.50 274.50 361.00 f 850.50 953.50 1465.50 10302.00
1950 1509.18 a 1280.22 a 1246.00 929.00 723.00 402.50 296.00 374.00 494.50 658.00 1080.00 1431.50 10423.91
1951 1553.00 1307.00 1324.00 961.50 642.00 500.00 203.00 288.50 503.00 826.00 1294.50 1526.00 10928.50
1952 1625.00 1500.23 a 1433.50 930.00 657.00 323.00 233.61 c 274.72 b 402.00 724.50 1237.50 1540.50 10881.56
1953 1343.50 1405.50 1222.50 1054.00 758.00 332.00 173.50 276.50 435.00 725.50 1006.50 1531.00 10263.50
1954 1384.50 1160.50 1297.50 791.00 592.00 349.50 114.50 241.50 400.00 716.50 985.50 1594.00 9627.00
1955 1725.50 1525.00 1383.63 a 976.00 647.00 452.59 a 203.00 185.00 427.50 767.50 1221.50 1343.00 10857.22
1956 1400.00 1612.00 1347.00 912.50 537.50 284.00 227.00 320.50 421.50 758.00 1276.50 1590.50 10687.00
1957 1619.50 1197.50 1278.50 1018.00 736.00 412.00 181.00 212.87 a 533.50 745.50 1201.50 1431.50 10567.37
1958 1758.00 1206.50 1362.97 a 1017.00 567.00 319.50 270.50 212.00 410.00 748.00 1067.00 1332.00 10270.47
1959 1564.50 1405.50 1357.50 952.50 644.00 301.50 264.00 241.00 524.50 821.00 1131.50 1410.50 10618.00
1960 1566.50 1552.50 1187.50 853.00 673.00 354.50 242.50 270.00 420.00 782.00 1077.50 1446.00 10425.00
1961 1717.50 1296.50 1197.50 977.50 650.50 353.00 267.00 196.50 618.00 777.00 1184.50 1520.00 10755.50
1962 1851.50 1259.00 1467.50 869.50 658.00 419.00 287.50 311.00 471.00 710.50 992.50 1297.50 10594.50
1963 1656.00 1239.50 1371.00 867.00 587.00 368.50 158.00 225.27 a 347.50 611.00 1002.50 1458.00 9891.27
1964 1764.00 1629.00 1532.50 984.00 654.50 410.00 147.00 296.00 483.00 764.50 1090.50 1485.42 a 11240.42
1965 1498.00 1411.50 1548.50 900.50 681.50 433.50 227.00 337.00 565.00 709.00 987.00 1385.00 10683.50
1966 1669.00 1495.50 1242.00 882.00 608.50 388.50 134.00 254.00 426.50 808.00 996.00 1634.50 10538.50
1967 1531.50 1378.50 1136.50 873.50 708.00 459.50 210.50 310.50 470.00 768.00 1118.00 1576.50 10541.00
1968 1678.50 1399.50 1334.00 1064.00 723.00 366.00 256.00 318.00 549.00 780.00 1285.50 1533.50 11287.00
1969 1389.00 1402.00 1496.00 843.50 558.50 488.00 178.50 173.50 434.50 958.50 1229.00 1448.50 10599.50
1970 1535.00 1347.00 1379.50 1144.50 676.50 421.50 228.50 198.00 527.50 965.00 1086.50 1433.50 10943.00
1971 1416.00 1413.00 1359.00 940.50 713.00 395.00 264.50 252.50 571.00 791.50 1141.00 1537.00 10794.00
1972 1556.00 1340.50 1096.50 887.50 652.00 351.00 252.50 287.00 473.00 735.00 1204.50 1605.50 10441.00
1973 1737.00 1475.50 1342.00 1114.50 703.50 440.00 290.50 257.50 486.00 760.00 1077.50 1407.00 11091.00
1974 1700.00 1529.50 1116.00 993.50 601.50 380.50 246.00 336.50 519.50 725.00 1084.00 1522.50 10754.50
1975 1593.50 1447.00 1238.50 1072.50 758.50 465.00 234.50 321.50 507.00 829.50 1170.00 1339.50 10977.00
1976 1596.50 1283.50 1363.50 885.00 617.00 410.50 183.50 292.00 449.00 850.50 1144.00 1545.00 10620.00
1977 1565.00 1280.50 1385.00 864.50 607.50 236.50 154.00 223.50 405.50 769.00 1059.00 1359.00 9909.00
1978 1509.50 1320.00 1173.50 872.00 681.00 345.50 190.00 298.50 453.00 782.50 1066.00 1659.50 10351.00
1979 1826.00 1365.00 1275.00 986.50 684.00 403.00 217.00 266.00 405.00 712.50 1328.00 1505.00 10973.00
1980 1448.50 1342.50 1349.50 1021.55 a 680.50 356.00 178.00 286.00 446.50 822.00 1117.50 1173.00 10221.55
1981 1365.50 1282.50 1183.00 805.50 683.50 289.00 191.50 270.00 406.00 807.50 1003.50 1358.50 9646.00
1982 1513.50 1406.50 1187.50 1006.50 707.00 450.50 261.00 185.00 460.50 885.00 1243.50 1508.00 10814.50
1983 1501.00 1287.50 1225.00 1165.00 811.50 449.50 234.50 165.00 407.00 708.00 1059.00 1392.33 b 10405.33
1984 1763.00 1497.00 1314.00 1125.50 637.50 418.00 162.00 218.50 440.50 904.00 1109.50 1443.50 11033.00
1985 1669.00 1502.50 1247.00 841.00 626.50 369.50 214.50 274.00 519.50 759.00 1124.48 a 1466.50 10613.48
1986 1507.50 1183.00 1090.00 897.00 660.00 312.50 252.50 251.00 496.00 785.50 1061.00 1456.50 9952.50
1987 1626.50 1278.50 1274.00 878.50 600.50 315.50 215.00 266.00 487.00 685.00 1105.50 1516.50 10248.50
1988 1646.00 1442.50 1378.50 917.00 610.00 246.00 200.00 216.50 471.00 675.50 1111.00 1546.50 10460.50
1989 1676.00 1374.50 1094.50 810.00 593.00 399.00 179.50 306.00 0.00 z 797.00 1118.00 1524.00 9871.50
1990 1552.00 1299.00 1166.00 846.00 694.50 309.50 256.50 274.50 357.50 781.50 1083.00 1613.50 10233.50
1991 1677.00 1343.00 1242.00 986.00 613.50 337.00 229.50 261.00 434.00 747.00 1176.00 1609.50 10655.50
1992 1714.50 1360.50 1129.00 759.50 541.50 392.00 285.50 316.50 446.50 693.00 1307.50 1567.50 10513.50
1993 1589.00 1332.00 1197.00 958.00 637.00 387.50 304.00 282.50 504.00 813.00 1277.50 1536.50 10818.00
1994 1612.50 1423.50 1213.00 877.50 558.00 276.00 212.50 195.00 431.00 768.00 1159.50 1463.00 10189.50
1995 1624.50 1156.00 1173.50 952.50 696.50 412.50 272.00 171.50 429.50 816.00 998.50 1380.50 10083.50
1996 1633.00 1403.00 1292.50 934.00 582.50 353.50 164.50 234.00 481.50 795.00 1057.24 a 1359.00 10289.74
1997 1570.50 1428.50 1212.50 1014.00 646.00 335.00 212.00 265.50 350.00 783.50 1153.00 1498.50 10469.00
1998 1526.00 1317.50 1263.50 936.00 589.00 437.50 112.50 206.00 293.50 743.00 997.00 1345.50 9767.00
1999 1398.00 1244.00 1059.00 946.00 649.00 395.50 159.50 201.50 475.00 776.00 984.00 1405.00 9692.50
2000 1429.62 a 1258.00 1215.00 816.50 508.50 339.50 134.00 159.50 362.50 714.50 1341.50 1500.00 9779.12
2001 1733.50 1235.00 1130.00 804.50 590.19 e 265.20 e 118.50 205.00 390.00 708.50 1011.00 1483.50 9674.89
2002 1632.50 1532.50 1341.50 714.50 585.50 203.00 81.00 188.00 403.00 894.00 1281.00 1473.00 10329.50
2003 1312.50 1342.00 1156.00 898.50 572.50 378.50 86.00 147.00 453.50 661.50 1061.00 1366.00 9435.00
2004 1555.00 1455.00 1007.50 769.50 541.00 341.50 228.00 314.00 468.00 718.50 1073.00 1503.00 9974.00
2005 1414.50 0.00 z 1254.00 841.00 576.50 341.00 146.00 245.00 394.00 690.50 1091.50 1526.50 8520.50
2006 1588.50 1474.50 1262.00 791.50 542.50 262.50 112.50 177.50 531.00 825.00 1097.00 1455.00 10119.50
2007 1827.50 1273.00 1134.00 790.00 602.12 e 301.00 115.00 138.50 392.50 691.50 1028.00 1491.00 9784.12
2008 1715.50 1387.50 1365.50 1037.50 662.50 364.00 168.00 232.50 451.00 771.50 1025.00 1423.93 a 10604.43
2009 1425.00 1256.00 1171.50 928.50 0.00 z 399.00 261.00 258.50 f 438.50 870.50 1046.00 1611.00 9407.00
2010 1631.50 1353.50 1267.00 933.50 716.00 336.50 175.00 206.50 398.00 700.00 1156.50 1262.50 10136.50
2011 1615.50 1478.50 1178.00 944.50 735.00 345.50 145.00 183.00 435.50 773.00 1130.50 1498.00 10462.00
2012 1509.00 1364.50 1038.00 706.50 539.00 202.50 112.00 170.50 384.00 730.50 988.00 1517.00 9261.50
2013 1822.00 1466.37 a 1245.50 29.00 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 4533.87
Period of Record Statistics
MEAN 1591.94 1370.76 1257.87 921.55 640.39 364.34 202.68 247.66 450.63 770.32 1119.01 1473.00 10403.36
S.D. 130.51 108.66 116.14 99.99 64.17 65.75 56.67 54.41 59.80 68.61 103.26 95.22 456.24
SKEW -0.06 0.15 0.27 0.24 0.18 -0.35 -0.24 -0.02 0.22 0.56 0.63 -0.54 -0.39
MAX 1851.50 1629.00 1548.50 1165.00 811.50 500.00 304.00 374.00 618.00 965.00 1380.50 1659.50 11287.00
MIN 1312.50 1156.00 1007.50 706.50 508.50 202.50 81.00 138.50 293.50 611.00 953.50 1173.00 9261.50
NO YRS 65 64 65 64 63 64 64 64 63 65 65 65 60