ASPEN, COLORADO

Monthly Total Heating Degree Days

(050370)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 197911
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 50.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 186.00 235.50 626.00 1195.00 1309.00 3551.50
1949 1498.85 a 1245.00 1015.50 693.00 515.00 340.00 138.50 209.00 358.50 573.00 g 833.50 1346.50 8193.35
1950 1042.00 g 1143.50 1182.50 800.00 646.00 296.00 196.69 b 266.60 a 382.24 a 494.45 a 873.00 1181.00 7461.98
1951 1414.00 1152.00 1122.00 820.00 520.50 405.00 106.00 199.43 a 377.50 731.08 a 1128.50 1413.00 9389.02
1952 1390.19 b 1341.25 a 1306.28 b 750.52 a 526.50 220.71 b 139.00 185.48 a 325.71 b 602.50 1163.00 1427.07 b 9378.21
1953 1183.50 1233.00 1078.00 880.71 b 650.50 198.00 84.00 151.50 300.00 634.50 943.00 1363.00 8699.71
1954 1176.00 960.00 1122.50 634.50 466.50 260.50 48.00 142.50 343.45 a 624.50 917.50 1410.50 8106.45
1955 1476.50 1385.50 1208.50 881.50 583.00 380.50 111.00 129.17 a 319.50 672.91 b 1120.38 d 1218.50 9486.96
1956 1187.50 1365.50 1144.50 786.50 446.50 189.00 153.97 a 248.50 270.00 a 598.00 1231.00 1414.50 9035.47
1957 1446.67 a 1006.50 1086.50 873.00 646.00 350.00 149.00 160.50 402.00 650.00 1162.50 1307.00 9239.67
1958 1448.00 1037.50 1185.50 891.00 477.92 a 218.50 146.00 88.50 311.50 637.00 1010.50 1168.50 8620.42
1959 1297.50 0.00 z 1025.00 765.00 530.00 171.00 132.50 153.50 415.50 756.00 1008.50 1210.00 7464.50
1960 1385.18 a 1362.00 1036.00 702.50 526.50 230.50 83.38 b 96.00 271.50 654.50 979.50 1292.00 8619.56
1961 1347.00 1086.00 1018.00 820.00 488.50 195.50 101.00 85.50 518.50 694.00 1098.00 1437.50 8889.50
1962 1486.50 1023.00 1197.50 669.50 560.50 287.50 156.50 174.50 363.00 596.00 898.00 1222.00 8634.50
1963 1507.00 1033.00 1107.50 740.50 443.50 299.50 60.50 147.00 231.50 482.00 967.00 1363.00 8382.00
1964 1533.50 1431.00 1332.50 862.50 517.00 293.00 27.00 198.00 357.00 568.50 1037.50 1351.50 9509.00
1965 1275.00 1174.50 1264.00 761.00 537.50 295.50 88.00 181.50 467.50 558.50 923.50 1258.50 8785.00
1966 1478.50 0.00 z 1029.50 751.50 453.50 259.00 53.50 155.50 323.00 689.50 898.50 1417.00 7509.00
1967 1343.50 1152.00 901.50 739.50 592.50 336.00 72.50 143.00 330.50 618.50 951.50 1417.50 8598.50
1968 1370.50 1134.00 1096.00 926.00 574.00 237.50 92.50 237.50 419.50 611.00 1130.00 1390.50 9219.00
1969 1224.00 1174.50 1227.50 674.00 395.52 b 363.00 51.50 55.50 321.50 869.55 a 1109.50 1278.50 8744.57
1970 1371.50 1038.00 1164.50 962.00 504.00 270.52 a 80.00 82.00 420.50 839.00 995.00 1305.00 9032.02
1971 1330.00 1190.00 1134.50 754.00 579.50 219.50 74.50 76.98 a 431.00 687.50 1062.50 1446.50 8986.48
1972 1391.50 1119.00 899.50 0.00 z 512.50 199.00 68.00 126.07 a 346.50 648.86 b 1192.00 1473.50 7976.43
1973 1457.50 1198.00 1098.43 a 947.50 525.50 296.50 144.50 119.50 370.50 600.50 929.50 1360.00 9047.93
1974 1489.50 1218.00 934.00 829.50 420.00 202.00 91.45 a 176.50 362.00 579.50 1051.50 1467.00 8820.95
1975 1396.00 1225.50 1128.00 900.50 595.50 336.00 91.34 c 130.50 347.00 631.50 1071.00 1269.97 a 9122.81
1976 1392.00 1056.43 a 1155.50 723.00 494.00 264.00 46.00 173.00 326.67 c 716.62 a 980.00 1301.00 8628.21
1977 1386.98 b 1073.00 1171.05 b 662.50 462.00 112.50 52.00 94.00 193.00 g 610.70 a 883.50 412.00 q 6508.23
1978 491.50 r 627.00 n 0.00 z 0.00 z 0.00 z 67.50 i 34.50 132.50 306.00 592.00 960.52 a 1502.50 3528.02
1979 1544.50 1174.50 799.00 h 783.75 b 532.34 b 260.17 a 51.50 0.00 z 249.00 576.50 1217.59 a 0.00 z 6389.85
Period of Record Statistics
MEAN 1387.20 1169.01 1116.28 792.60 524.09 266.21 94.35 151.80 348.52 640.38 1028.83 1344.07 8912.00
S.D. 104.06 124.12 107.10 90.26 65.17 68.12 42.76 51.72 65.32 82.92 112.09 91.53 362.16
SKEW -0.59 0.44 -0.19 0.16 0.21 0.04 0.47 0.23 0.38 0.84 0.19 -0.24 -0.11
MAX 1544.50 1431.00 1332.50 962.00 650.50 405.00 196.69 266.60 518.50 869.55 1231.00 1502.50 9509.00
MIN 1176.00 960.00 899.50 634.50 395.52 112.50 27.00 55.50 231.50 482.00 833.50 1168.50 8106.45
NO YRS 29 28 29 29 30 30 31 31 31 31 32 30 23