CENTER 4 SSW, COLORADO

Monthly Total Heating Degree Days

(051458)

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
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 1294.52 b 1294.52
1942 1491.50 1235.50 1110.00 673.00 485.50 230.50 92.00 139.00 325.50 620.00 923.50 1305.50 8631.50
1943 1428.00 1032.50 0.00 z 154.00 r 407.50 167.00 19.50 54.00 305.50 706.50 1049.00 1666.00 6835.50
1944 1738.50 1421.00 1140.00 766.00 441.50 168.50 63.00 118.00 324.31 a 630.00 1061.50 1483.00 9355.31
1945 1444.50 1066.50 1038.50 765.50 355.00 213.62 a 81.50 71.00 324.50 647.00 1093.00 1474.00 8574.62
1946 1493.17 a 1180.00 931.50 507.00 439.00 95.50 29.34 c 110.50 285.00 766.00 1143.00 1245.00 8225.01
1947 1464.75 a 1033.85 b 1017.50 728.50 368.00 215.50 44.50 104.00 289.50 592.00 1202.00 1518.50 8578.60
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 67.00 289.00 734.38 b 1215.00 1414.24 b 3719.62
1949 1697.00 1380.08 b 990.50 525.00 g 426.50 219.50 47.00 159.00 340.56 c 661.50 g 935.00 1429.50 7624.63
1950 1446.48 c 1043.54 b 808.00 f 650.89 b 489.36 c 167.50 123.00 204.50 383.00 551.44 e 999.00 1259.00 7317.71
1951 1339.00 1179.00 1038.50 720.50 396.28 a 208.00 13.00 66.13 a 249.00 632.00 1146.00 1383.00 8370.42
1952 1520.50 1332.50 1167.67 a 626.50 394.00 83.00 47.00 86.91 c 260.50 586.50 1183.50 1571.00 8859.58
1953 1211.00 1143.00 920.00 727.50 546.50 135.50 41.50 135.50 256.00 588.48 a 1003.00 1487.50 8195.48
1954 1356.00 880.50 975.00 509.00 322.50 123.00 30.50 146.00 227.50 441.15 e 905.77 d 1370.50 7287.42
1955 1441.50 1251.00 993.00 768.00 469.00 210.50 57.00 24.50 253.50 583.50 984.50 1238.00 8274.00
1956 1269.50 1288.50 934.50 734.00 326.00 63.00 27.00 139.50 202.00 584.50 1133.50 1302.00 8004.00
1957 1349.00 894.00 951.50 791.50 562.50 175.00 56.00 89.00 352.00 647.50 1219.50 1326.50 8414.00
1958 1450.50 987.00 1073.50 772.00 328.00 114.00 83.50 77.00 284.50 617.50 1030.00 1167.00 7984.50
1959 1462.50 1129.50 1049.00 726.50 494.00 119.00 105.00 136.00 389.50 717.00 1036.50 1191.00 8555.50
1960 1616.00 1443.00 947.50 624.00 460.50 135.50 73.00 112.00 270.50 654.50 962.00 1501.50 8800.00
1961 1559.50 1042.50 942.00 675.50 409.00 138.00 90.50 80.00 386.50 640.50 1192.00 1529.50 8685.50
1962 1461.50 967.00 1106.00 577.00 431.50 228.50 105.50 145.50 305.00 555.50 906.50 1151.00 7940.50
1963 1566.00 1094.50 984.50 674.46 b 350.00 206.00 15.00 78.00 205.50 466.00 956.00 1314.50 7910.46
1964 1477.00 1468.00 1232.00 754.00 405.50 205.00 6.50 103.00 274.00 569.00 1108.00 1628.00 9230.00
1965 1429.00 1225.50 1119.50 683.00 492.50 263.50 56.32 a 151.00 369.50 558.50 863.00 1265.00 8476.32
1966 1570.50 1411.00 967.00 661.50 373.00 214.50 11.00 115.00 247.00 626.00 899.00 1294.50 8390.00
1967 1366.00 1056.50 857.00 713.50 459.50 244.00 41.00 132.50 294.00 561.50 944.00 1582.50 8252.00
1968 1787.00 1291.50 1004.00 782.50 467.00 147.00 75.00 158.50 359.00 572.50 1020.50 1383.00 9047.50
1969 1220.00 1099.50 1049.50 601.00 345.00 266.50 29.50 35.00 268.00 778.00 974.50 1361.50 8028.00
1970 1392.00 942.50 1013.00 818.00 387.50 235.50 48.50 57.50 377.07 a 838.50 992.00 1330.00 8432.07
1971 1399.00 1179.00 1020.50 750.50 563.00 239.50 147.00 146.50 396.00 705.50 1106.00 1455.50 9108.00
1972 1489.00 1087.50 835.00 687.00 497.00 203.50 141.50 198.50 380.00 631.50 1427.50 1762.50 9340.50
1973 1880.00 1459.00 1098.50 823.50 459.00 206.50 138.00 178.00 383.00 667.00 956.00 1313.00 9561.50
1974 1735.00 1436.50 876.50 789.00 354.50 173.00 99.00 231.00 340.50 604.50 1046.50 1547.50 9233.50
1975 1788.00 1352.50 1038.00 825.50 523.50 293.50 107.00 182.50 365.69 a 715.50 1175.50 1640.50 10007.69
1976 1764.50 1112.50 1034.50 733.50 494.00 327.00 128.50 255.50 373.00 807.00 1105.00 1753.50 9888.50
1977 1760.50 1222.50 1160.00 693.00 500.50 159.00 115.00 136.50 338.50 675.00 1029.00 1271.50 9061.00
1978 1325.50 1087.00 894.00 704.50 593.00 273.50 159.50 191.00 357.50 653.00 1032.50 1907.00 9178.00
1979 1939.00 1597.50 1214.50 733.50 494.50 299.50 142.50 242.50 304.00 610.50 1305.00 1404.00 10287.00
1980 1496.00 1070.00 1075.00 775.50 560.50 227.00 86.00 218.00 349.00 790.00 1044.00 1147.00 8838.00
1981 1264.50 1088.50 1028.50 610.50 554.00 159.83 a 82.50 183.50 336.00 736.00 933.10 a 1332.50 8309.43
1982 1439.00 1280.50 1002.50 810.50 581.50 358.50 138.50 84.00 314.50 771.50 1035.50 1327.50 9144.00
1983 1323.50 1055.00 964.50 858.50 563.50 305.00 62.00 68.50 243.00 613.00 1062.50 1505.00 8624.00
1984 1952.50 1568.00 1133.50 768.00 324.50 229.50 48.00 94.50 285.00 776.00 1032.00 1427.00 9638.50
1985 1629.50 1360.00 981.84 b 641.50 436.50 174.50 69.00 90.00 396.50 630.50 1075.50 1514.50 8999.84
1986 1361.50 1003.50 802.00 605.69 a 453.12 a 178.00 130.00 121.50 400.00 715.50 1061.50 1430.50 8262.81
1987 1630.00 1264.00 1173.50 649.50 445.50 162.50 120.50 149.50 344.50 536.00 1108.50 1610.50 9194.50
1988 1896.50 1448.00 1026.00 628.50 486.00 164.00 88.50 113.00 326.50 522.50 1069.50 1476.00 9245.00
1989 1579.50 1345.50 810.00 556.50 351.50 233.50 44.00 162.00 290.50 669.00 934.00 1313.00 8289.00
1990 1518.00 1071.50 878.50 626.50 517.00 159.00 121.00 213.00 220.50 640.50 995.50 1544.50 8505.50
1991 1642.50 1093.50 1010.50 725.00 443.00 204.50 106.50 111.50 279.50 538.50 1299.00 1847.50 9301.50
1992 1980.50 1512.00 1162.50 579.50 367.00 259.50 165.50 201.50 319.50 555.00 1197.50 1778.00 10078.00
1993 1593.00 1326.50 990.00 713.50 459.50 214.50 116.50 190.00 378.00 731.50 1213.00 1450.50 9376.50
1994 1339.50 1149.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 295.00 679.50 1145.00 1307.50 5916.00
1995 1269.50 837.00 913.00 768.00 524.50 255.00 144.00 50.50 314.50 634.00 911.00 1189.50 7810.50
1996 1339.50 1001.00 954.50 663.00 272.50 158.50 55.50 107.50 357.00 690.00 983.50 1346.50 7929.00
1997 1512.00 1171.00 900.03 a 774.00 417.47 a 174.00 101.00 104.00 198.50 654.00 1100.50 1662.50 8769.00
1998 1542.50 1212.00 979.00 767.00 413.00 255.50 31.50 69.50 168.50 655.50 901.00 1254.00 8249.00
1999 1167.00 980.00 834.42 a 767.00 511.50 221.50 49.50 92.50 321.00 593.00 951.50 1292.50 7781.42
2000 1235.50 1006.00 924.00 637.50 d 327.00 148.00 49.50 80.50 214.50 654.00 1138.00 1271.00 7685.50
2001 1487.50 1221.00 919.00 601.50 334.00 121.00 40.00 74.50 206.50 590.50 944.50 1384.50 7924.50
2002 1445.50 1171.50 1009.50 492.50 388.00 79.50 10.00 89.50 286.50 675.50 1014.50 1401.00 8063.50
2003 0.00 z 1060.00 885.00 645.50 351.00 180.00 15.50 62.00 260.00 483.50 978.50 1391.50 6312.50
2004 1336.50 1396.50 761.50 688.00 372.50 176.00 95.50 115.00 302.50 648.00 1003.50 1341.50 8237.00
2005 1225.50 1032.50 962.00 653.00 352.00 180.50 33.00 91.00 221.00 570.00 931.00 1297.00 7548.50
2006 1302.00 1055.50 947.50 590.00 305.50 82.50 32.00 65.00 0.00 z 644.00 959.00 1388.50 7371.50
2007 1798.00 1318.50 851.00 638.00 412.00 135.50 9.00 19.00 227.00 611.00 940.00 1742.00 8701.00
2008 1851.00 1464.50 1100.00 694.00 469.50 200.00 33.50 94.50 296.00 620.00 942.50 1512.50 9278.00
2009 1646.50 1206.00 870.00 698.00 309.50 225.00 0.00 z 138.50 289.50 0.00 z 0.00 z 0.00 z 5383.00
2010 0.00 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
2011 769.00 n 739.50 k 577.50 k 334.00 n 296.50 p 65.00 l 4.00 m 12.50 k 168.00 j 410.50 k 732.50 i 871.50 n 0.00
2012 823.00 l 702.50 k 453.00 n 248.00 n 114.00 t 29.50 n 1.00 q 35.00 i 150.00 o 288.00 p 633.50 k 859.00 n 0.00
2013 725.00 s 597.00 n 452.00 p 42.00 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
Period of Record Statistics
MEAN 1514.13 1191.38 993.34 693.70 433.55 193.79 73.36 121.07 304.13 638.84 1047.30 1426.58 8665.86
S.D. 200.90 178.44 104.74 82.36 79.32 60.82 43.81 54.11 58.03 80.89 113.35 171.53 660.27
SKEW 0.54 0.31 0.15 -0.36 0.09 0.18 0.32 0.49 -0.23 0.17 0.88 0.76 0.35
MAX 1980.50 1597.50 1232.00 858.50 593.00 358.50 165.50 255.50 400.00 838.50 1427.50 1907.00 10287.00
MIN 1167.00 837.00 761.50 492.50 272.50 63.00 6.50 19.00 168.50 441.15 863.00 1147.00 7287.42
NO YRS 66 67 64 64 66 66 65 67 67 66 67 68 60