DENVER STAPLETON, COLORADO

Monthly Total Heating Degree Days

(052220)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201301
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 2.00 48.00 425.00 859.00 1096.00 2430.00
1949 1509.50 962.50 791.00 477.00 254.50 88.00 0.00 4.50 91.00 480.50 491.00 1008.50 6158.00
1950 1104.50 739.00 834.00 521.00 378.50 64.00 8.50 15.00 174.50 164.00 776.00 890.50 5669.50
1951 1182.50 871.00 905.50 636.00 256.00 169.50 18.00 12.50 143.00 520.50 806.50 1117.50 6638.50
1952 935.00 871.50 969.00 504.50 260.00 0.00 23.00 0.50 71.50 362.50 980.00 1007.00 5984.50
1953 787.50 904.00 665.00 669.00 361.00 31.50 0.00 0.50 49.00 335.50 657.50 1041.50 5502.00
1954 890.50 595.50 920.50 343.50 264.50 44.50 0.00 4.00 74.50 399.50 622.00 941.50 5100.50
1955 1171.00 1061.00 885.00 451.50 207.00 107.00 0.00 2.50 130.50 343.50 866.00 918.00 6143.00
1956 962.00 1081.50 774.00 586.00 149.00 0.00 2.00 21.50 67.50 283.50 836.50 908.50 5672.00
1957 1216.00 680.50 805.00 709.00 344.00 77.50 0.00 0.50 146.50 427.50 845.50 789.00 6041.00
1958 995.00 773.50 999.50 614.50 144.00 37.50 14.00 4.50 109.50 348.00 732.50 905.50 5678.00
1959 1085.50 974.50 848.50 581.00 278.00 25.50 0.50 6.50 198.00 524.50 822.50 883.50 6228.50
1960 1160.00 1166.00 835.00 440.00 251.00 39.50 7.50 13.50 93.50 404.00 767.50 1193.50 6371.00
1961 1033.00 834.50 810.50 569.50 306.00 69.00 15.00 0.00 278.00 465.50 910.00 1157.00 6448.00
1962 1412.00 985.00 942.00 443.00 182.00 75.00 0.00 20.00 116.50 359.00 711.50 969.00 6215.00
1963 1422.50 775.50 858.50 449.50 161.50 51.50 6.00 8.00 32.00 234.50 698.50 1131.00 5829.00
1964 1067.50 1092.00 992.00 552.00 234.50 74.50 0.00 17.50 126.50 383.50 751.00 987.00 6278.00
1965 929.50 1053.00 1117.50 417.00 248.50 68.50 6.50 8.50 300.50 307.50 651.50 930.50 6039.00
1966 1130.50 1024.50 699.00 611.50 208.50 84.00 0.00 9.50 65.00 398.00 706.50 1028.00 5965.00
1967 963.00 837.50 686.00 505.00 395.00 139.50 4.50 17.00 113.00 396.00 736.50 1194.00 5987.00
1968 1094.00 892.50 756.50 662.00 349.50 40.50 10.50 38.00 151.00 407.50 879.00 1119.00 6400.00
1969 932.50 830.50 1018.50 384.00 210.50 147.50 2.00 0.50 59.00 808.00 778.50 1007.00 6178.50
1970 1067.50 741.00 977.00 640.00 207.50 81.50 0.00 0.50 202.00 593.00 778.50 983.00 6271.50
1971 1022.00 964.50 823.00 516.50 337.00 28.50 25.50 0.00 276.50 484.00 777.50 1027.50 6282.50
1972 1071.00 837.00 628.50 494.00 252.50 4.50 43.00 15.50 111.50 402.50 965.00 1244.00 6069.00
1973 1169.00 827.50 779.50 653.50 294.50 57.50 9.00 0.00 171.50 326.00 764.50 1037.50 6090.00
1974 1281.00 836.00 678.00 514.50 140.00 69.50 0.00 11.00 205.50 389.50 811.50 1048.50 5985.00
1975 1034.00 963.50 861.00 627.00 336.00 89.00 0.00 5.00 199.50 369.50 846.50 852.50 6183.50
1976 1013.50 746.50 866.00 476.00 261.00 66.50 0.00 7.00 146.00 516.00 764.50 917.00 5780.00
1977 1111.00 758.00 778.50 420.50 142.50 0.00 2.00 14.50 42.00 364.50 741.50 928.50 5303.50
1978 1215.00 943.00 673.00 442.50 340.50 90.00 0.00 20.50 99.50 373.50 817.50 1251.50 6266.50
1979 1456.50 862.00 759.00 478.00 319.00 84.50 0.00 22.00 58.50 354.50 951.00 946.50 6291.50
1980 1211.50 884.50 836.50 521.00 252.50 10.00 0.00 4.50 59.00 392.00 693.00 738.50 5603.00
1981 859.00 808.50 737.50 265.50 252.00 28.50 0.00 12.50 20.50 384.50 574.50 906.50 4849.50
1982 1077.50 924.00 740.50 529.00 314.00 96.50 4.00 0.00 156.50 497.00 881.00 1057.50 6277.50
1983 1027.00 796.50 894.00 720.00 426.50 133.00 3.50 0.00 92.00 380.50 841.50 1475.00 6789.50
1984 1171.00 897.00 863.50 682.00 188.50 53.00 0.00 1.00 186.50 628.00 759.50 997.00 6427.00
1985 1224.00 1046.00 750.00 422.00 172.00 45.50 0.00 1.50 245.50 443.50 1058.00 1102.50 6510.50
1986 765.50 809.00 556.00 463.50 267.50 23.50 0.00 0.00 150.00 487.00 781.50 1054.50 5358.00
1987 1019.00 809.50 811.00 397.00 177.00 23.00 11.00 21.50 113.00 416.50 752.50 1134.50 5685.50
1988 1235.50 896.50 820.50 444.00 220.50 15.00 7.50 0.00 133.00 340.50 732.00 1051.50 5896.50
1989 977.00 1194.50 673.50 437.00 218.50 82.00 0.00 0.00 156.50 430.00 666.00 1169.00 6004.00
1990 887.50 888.50 791.00 477.50 271.50 8.00 13.00 3.50 65.50 396.50 630.00 1217.50 5650.00
1991 1153.00 690.50 689.00 518.50 178.50 18.00 6.50 4.50 122.00 456.00 909.00 989.00 5734.50
1992 1030.50 722.50 682.00 315.00 164.00 37.50 11.00 38.00 63.00 352.50 933.50 1227.00 5576.50
1993 1168.50 997.50 697.00 496.00 200.50 74.00 1.50 21.50 159.00 496.50 908.50 957.00 6177.50
1994 953.00 885.50 626.50 487.50 109.50 3.00 3.50 2.00 59.00 403.50 812.50 900.50 5246.00
1995 965.50 742.50 797.50 663.50 465.00 135.50 20.00 0.00 197.00 473.00 672.50 986.50 6118.50
1996 1158.50 861.00 866.50 454.50 202.00 21.50 0.00 1.50 179.50 424.50 789.50 943.50 5902.50
1997 1126.00 943.00 660.50 679.00 235.00 25.50 1.50 9.50 88.00 449.50 871.00 1073.50 6162.00
1998 952.00 828.00 828.00 569.00 164.00 124.00 0.00 1.00 41.50 442.50 658.50 1078.00 5686.50
1999 914.50 695.50 630.50 631.50 293.00 71.50 0.00 2.50 203.00 414.50 537.00 918.50 5312.00
2000 948.00 756.00 716.50 426.50 189.50 44.00 0.00 0.00 156.50 434.00 1035.50 1117.00 5823.50
2001 1048.00 1024.50 771.00 468.50 250.00 48.50 0.00 7.23 a 69.50 424.00 657.00 972.50 5740.73
2002 1039.00 883.50 933.50 421.00 275.50 21.50 0.00 3.50 125.50 603.50 813.50 947.50 6067.50
2003 847.50 1001.00 770.00 399.00 276.50 78.50 0.00 5.00 161.00 275.00 870.50 975.50 5659.50
2004 1012.50 967.00 585.00 496.00 212.00 104.50 21.50 42.00 140.50 443.00 810.50 937.50 5772.00
2005 971.00 813.00 775.00 559.50 291.50 88.00 5.00 20.00 79.50 421.00 659.50 1083.00 5766.00
2006 830.00 967.50 828.00 407.50 192.00 12.50 15.00 14.50 226.50 485.00 719.00 1021.50 5719.00
2007 1338.00 974.00 614.50 569.50 224.00 54.50 0.00 1.50 98.00 364.50 703.50 1192.00 6134.00
2008 1173.50 917.50 785.00 597.50 309.50 55.00 0.00 32.50 145.50 437.00 651.50 1180.50 6285.00
2009 948.50 750.00 719.00 603.50 0.00 z 101.50 18.50 13.00 146.50 703.00 671.00 1256.00 5930.50
2010 1057.00 1038.50 777.00 514.50 374.00 41.50 9.50 0.00 41.50 332.00 787.50 932.00 5905.00
2011 1104.00 1043.00 702.00 508.00 422.00 36.50 0.00 a 0.00 139.00 429.50 754.00 1209.50 6347.50
2012 906.50 1063.00 519.50 368.00 182.50 10.00 0.00 0.50 76.00 459.50 614.00 1019.00 5218.50
2013 1056.50 959.50 826.50 22.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 47.00 z 2842.50
Period of Record Statistics
MEAN 1070.46 891.74 787.85 514.08 254.68 58.30 5.47 8.73 126.87 422.62 774.03 1035.08 5943.72
S.D. 155.30 124.42 117.13 100.65 78.01 39.99 8.35 10.28 63.82 99.65 113.55 128.60 386.17
SKEW 0.64 0.12 0.22 0.08 0.55 0.61 2.08 1.46 0.60 1.06 0.11 0.60 -0.48
MAX 1509.50 1194.50 1117.50 720.00 465.00 169.50 43.00 42.00 300.50 808.00 1058.00 1475.00 6789.50
MIN 765.50 595.50 519.50 265.50 109.50 0.00 0.00 0.00 20.50 164.00 491.00 738.50 4849.50
NO YRS 65 65 65 64 63 64 64 65 65 65 65 65 63