GRAND LAKE 1 NW, COLORADO

Monthly Total Heating Degree Days

(053496)

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
1907 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
1908 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
1909 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
1910 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
1911 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
1912 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
1913 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
1914 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
1915 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
1916 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
1917 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
1918 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
1919 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
1920 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
1921 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
1922 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
1923 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
1924 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
1925 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
1926 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
1927 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
1928 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
1929 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
1930 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
1931 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
1932 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
1933 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
1934 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
1935 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
1936 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
1937 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
1938 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
1939 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 812.00 1049.50 1297.00 3158.50
1940 1497.50 1248.50 1145.00 832.50 577.00 307.00 166.50 279.00 353.50 684.50 1169.50 1314.00 9574.50
1941 1532.00 1199.50 1132.00 927.00 557.00 421.50 222.00 274.00 524.50 773.50 1208.00 1352.50 10123.50
1942 1667.00 1491.00 1334.00 844.50 676.00 391.50 222.00 245.00 483.50 770.00 1109.50 1558.50 10792.50
1943 1588.00 1303.50 1387.00 783.00 724.50 501.00 226.00 228.00 471.00 799.50 0.00 z 1442.00 9453.50
1944 1619.50 1360.00 1277.00 986.00 0.00 z 0.00 z 0.00 z 267.50 463.00 719.00 1139.00 1472.00 9303.00
1945 1467.00 1197.00 1245.50 1099.00 679.50 0.00 z 233.50 208.50 487.00 732.00 1217.00 0.00 z 8566.00
1946 0.00 z 1342.00 0.00 z 0.00 z 722.50 422.00 0.00 z 0.00 z 0.00 z 879.00 1185.50 1339.50 5890.50
1947 1642.00 1246.50 1257.00 923.50 589.50 479.50 197.00 209.00 386.00 705.00 1221.00 1537.50 10393.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 290.00 396.00 832.50 1296.00 1539.00 4353.50
1949 1808.50 1444.00 1157.00 857.00 653.50 419.50 318.00 340.50 509.00 872.00 935.00 1460.00 10774.00
1950 1506.60 a 1260.50 1263.00 924.50 780.50 466.00 383.50 421.17 b 541.50 676.83 a 1111.55 a 1376.00 10711.66
1951 1521.50 1286.50 1315.50 967.50 700.50 559.50 284.50 347.00 535.00 851.50 1317.00 1523.50 11209.50
1952 1581.50 1474.50 1437.50 932.50 683.50 400.50 328.00 367.50 474.00 768.00 1318.93 b 1557.50 11323.93
1953 1328.00 1378.00 1214.50 1062.00 816.91 d 418.50 287.00 367.00 497.50 778.74 b 1059.81 d 1557.00 10764.96
1954 1354.00 1127.00 1291.50 813.50 650.00 426.00 204.00 329.00 439.66 a 752.00 997.50 1561.50 9945.66
1955 1606.00 1464.00 1333.50 1001.50 704.50 511.00 303.00 254.00 452.68 b 792.10 b 1258.50 1344.50 11025.28
1956 1380.00 1563.00 1353.50 971.50 620.50 401.50 330.15 a 426.50 485.00 831.00 1350.00 a 1536.00 11248.65
1957 1608.38 a 1166.50 1272.00 1057.00 797.00 475.50 301.00 317.00 605.00 822.00 1316.50 1481.00 11218.88
1958 1649.00 1162.00 1351.00 1046.50 637.50 389.00 392.15 a 269.91 b 494.50 797.50 1112.50 1349.50 10651.06
1959 1490.00 1342.00 1347.50 1007.50 698.00 373.50 339.50 323.50 552.00 888.00 1225.50 1418.00 11005.00
1960 1560.50 1529.00 1171.50 861.00 697.00 418.00 326.00 308.50 439.00 791.50 1150.00 1490.50 10742.50
1961 1648.00 1313.00 1202.50 1022.00 686.50 432.00 341.50 289.00 674.00 809.50 1271.50 1588.00 11277.50
1962 1732.00 1190.50 1423.50 865.50 678.00 482.50 375.00 379.50 521.90 a 761.00 1060.00 1371.50 10840.90
1963 1632.50 1175.00 1304.50 866.00 592.00 428.00 244.00 291.50 415.86 a 652.00 1077.00 1468.00 10146.36
1964 1720.50 1580.50 1485.00 1015.50 680.50 476.00 234.50 361.00 534.00 791.50 1119.50 1536.00 11534.50
1965 1418.50 1366.50 1515.00 920.00 745.00 481.50 295.00 407.50 631.50 758.50 1065.50 1402.00 11006.50
1966 1647.50 1429.00 1220.00 947.50 661.50 457.50 199.00 326.50 484.00 840.50 1051.00 1569.50 10833.50
1967 1474.50 1362.50 1114.00 900.00 760.00 518.50 250.50 380.00 541.61 b 798.50 1175.00 1565.50 10840.61
1968 1530.50 1286.00 1276.00 1101.50 784.00 424.00 312.50 375.00 593.50 822.50 1360.00 1486.00 11351.50
1969 1344.00 1330.00 1436.50 874.50 615.00 531.00 244.00 231.50 484.50 794.00 g 1303.93 b 1449.25 e 9844.18
1970 1218.00 f 993.50 f 944.50 i 1165.00 718.54 c 448.00 266.00 252.59 d 578.50 1028.74 d 1158.62 a 1460.62 a 7076.61
1971 1419.05 b 1376.67 a 1332.00 996.67 c 734.18 a 419.00 318.27 a 319.54 e 618.00 854.71 c 1188.10 a 1553.32 c 11129.51
1972 1528.30 a 1310.02 c 877.00 f 879.44 c 691.50 405.00 334.50 366.83 a 584.00 811.50 1333.89 c 995.50 l 8244.99
1973 1615.00 1390.00 1351.00 1201.07 b 768.00 498.50 343.00 359.00 586.50 846.50 1155.00 1497.62 b 11611.19
1974 1384.50 f 1498.00 a 739.50 m 791.00 f 658.15 e 400.80 e 313.88 c 434.00 565.00 765.00 1213.00 1606.00 7453.83
1975 1587.50 1405.00 1257.00 1099.00 786.50 470.00 232.50 400.00 512.00 806.00 1221.50 1388.00 11165.00
1976 1544.50 1230.00 1325.50 897.50 689.50 453.00 262.98 a 359.50 505.50 896.62 e 1163.65 d 1541.50 10869.75
1977 1536.00 1252.50 1354.00 882.00 672.00 295.50 229.00 325.50 480.00 819.50 1130.50 1347.50 10324.00
1978 1438.50 1284.00 1086.00 855.00 741.50 353.28 a 202.02 a 354.71 e 470.50 772.00 1104.50 1606.50 10268.50
1979 1695.50 1248.50 1182.13 a 934.00 721.04 d 424.82 b 245.70 d 243.00 f 441.50 662.33 e 1401.67 c 1421.87 a 10379.06
1980 1401.50 1239.50 1316.00 997.50 678.00 355.00 160.50 314.50 450.00 a 848.00 1115.50 1168.50 10044.50
1981 1334.55 a 1223.70 a 1162.50 784.14 a 702.00 297.00 215.50 292.50 422.59 a 837.55 c 1028.50 1381.50 9682.03
1982 1468.50 1278.00 1156.00 995.00 726.00 467.50 237.00 201.00 469.00 887.00 1236.50 1454.00 10575.50
1983 1365.50 1173.50 1134.00 1104.50 769.50 441.50 215.00 191.50 384.50 735.00 1129.00 1501.50 10145.00
1984 1596.00 1322.00 1217.50 1039.50 606.50 422.50 195.50 243.00 466.00 949.00 1142.50 1401.50 10601.50
1985 1536.50 1381.00 1167.00 805.00 626.00 365.50 235.50 281.00 555.00 778.00 1189.00 1394.50 10314.00
1986 1314.00 1132.00 1006.00 846.50 669.50 303.00 289.50 267.50 532.00 770.50 1089.50 1426.50 9646.50
1987 1473.50 1147.00 1173.50 819.50 612.50 340.00 226.00 320.00 507.41 a 683.00 1118.50 1474.50 9895.41
1988 1560.00 1285.00 1301.50 854.50 621.50 260.50 224.50 213.00 471.00 646.50 1132.00 1487.00 10057.00
1989 1490.50 1236.50 1013.00 812.50 576.00 379.66 a 171.00 314.50 434.50 784.50 1149.64 b 1475.00 9837.30
1990 1408.00 1208.00 1070.50 819.00 685.00 275.00 271.50 293.50 365.50 779.50 1080.00 1558.50 9814.00
1991 1550.00 1150.00 1188.00 947.50 648.50 368.50 264.00 294.00 464.00 744.50 1187.50 1475.50 10282.00
1992 1488.50 1227.00 1073.00 764.50 582.50 435.50 323.00 339.50 457.50 683.50 1321.00 1507.00 10202.50
1993 1385.00 1224.00 1121.00 923.50 658.00 404.50 304.00 289.50 502.00 817.50 1289.00 1454.50 10372.50
1994 1409.50 1248.00 1094.50 835.50 535.00 260.50 212.50 186.50 439.00 780.50 1152.00 1350.00 9503.50
1995 1439.50 1032.50 1076.50 929.00 719.50 428.50 288.00 170.50 444.50 812.50 1008.00 1367.00 9716.00
1996 1467.50 1211.50 1147.00 883.00 556.00 334.50 156.50 223.50 473.00 804.50 1086.50 1366.00 9709.50
1997 1411.00 1245.00 1048.50 973.50 635.50 347.00 202.50 278.00 363.00 762.00 1165.00 1476.50 9907.50
1998 1355.00 1200.00 1131.50 888.50 594.00 424.00 134.50 232.50 282.00 751.00 1007.00 1345.00 9345.00
1999 1317.50 1119.50 976.50 938.00 674.50 402.00 167.00 243.50 445.00 716.50 933.00 1412.00 9345.00
2000 1320.00 1091.50 1084.00 771.00 501.00 326.00 142.00 180.00 390.00 685.00 1341.50 1459.00 9291.00
2001 1473.50 1097.00 1033.00 763.00 546.50 286.00 97.00 214.00 377.50 704.00 990.50 1431.50 9013.50
2002 1443.50 1345.50 1232.50 719.00 628.50 247.00 71.00 205.00 412.50 864.50 1229.50 1391.00 9789.50
2003 1171.00 1280.00 1075.00 843.50 616.00 414.00 88.50 162.00 480.00 629.50 1105.00 1336.50 9201.00
2004 1380.50 1293.50 940.00 781.00 572.50 390.50 266.50 328.50 494.50 711.50 1088.00 1397.50 9644.50
2005 1249.50 1151.50 1161.50 836.50 610.50 374.50 147.50 298.50 408.50 706.00 1108.00 1483.50 9536.00
2006 1408.00 1312.00 1168.00 770.00 577.00 284.00 143.00 233.00 582.50 855.50 1110.00 1398.50 9841.50
2007 1534.00 1187.50 1009.00 815.00 638.00 323.00 122.00 173.50 421.00 739.00 1047.00 1468.50 9477.50
2008 1574.00 1342.50 1286.00 1028.50 709.50 405.00 194.00 273.50 492.00 790.00 1052.00 1423.00 10570.00
2009 1376.50 1172.50 1146.50 935.00 0.00 z 434.00 273.50 321.00 459.50 921.00 1028.50 1598.00 9666.00
2010 1444.50 1293.00 1183.00 916.00 722.50 325.50 190.00 250.50 397.00 754.50 1213.50 1292.00 9982.00
2011 1531.00 1397.50 1131.00 950.50 767.00 369.00 178.00 213.00 472.00 818.00 1202.00 1480.00 10509.00
2012 1408.00 1309.50 1021.00 741.00 599.50 236.00 166.50 229.50 438.00 802.00 1013.50 1471.50 9436.00
2013 1647.50 1379.50 767.00 k 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 3027.00
Period of Record Statistics
MEAN 1495.04 1285.41 1208.74 916.43 667.33 398.67 241.15 289.54 480.06 785.98 1156.03 1451.01 10322.45
S.D. 123.25 115.70 128.94 106.06 70.14 72.48 72.60 67.62 71.50 72.81 105.89 87.23 665.24
SKEW 0.02 0.42 0.18 0.45 -0.05 -0.29 -0.10 0.11 0.17 0.33 0.23 -0.38 0.04
MAX 1808.50 1580.50 1515.00 1201.07 816.91 559.50 392.15 434.00 674.00 1028.74 1401.67 1606.50 11611.19
MIN 1171.00 1032.50 940.00 719.00 501.00 236.00 71.00 162.00 282.00 629.50 933.00 1168.50 9013.50
NO YRS 70 72 68 70 70 70 70 71 72 73 73 72 62