BURLINGTON, COLORADO

Monthly Total Heating Degree Days

(051121)

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
1903 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 972.50 972.50
1904 1168.00 881.50 708.50 522.00 269.50 84.11 b 7.50 14.00 74.00 377.50 668.79 a 1015.50 5790.90
1905 1221.40 a 1246.00 d 656.50 569.48 a 316.50 18.50 28.00 1.50 46.03 a 571.00 694.29 b 1074.15 a 6443.35
1906 958.50 889.50 1186.50 470.19 d 259.50 70.50 24.59 b 7.48 b 90.50 502.50 834.50 856.50 6150.76
1907 1080.87 a 778.00 577.78 b 605.89 b 400.00 55.50 0.00 5.00 96.72 a 0.00 z 0.00 z 0.00 z 3599.76
1908 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.00 r 5.00 72.00 472.15 e 844.66 a 1237.50 2631.31
1909 1169.00 909.00 846.09 b 612.00 288.00 70.50 0.00 0.00 0.00 z 407.00 677.50 1477.00 6456.09
1910 1161.50 1002.00 419.61 c 224.50 l 298.50 26.00 0.00 28.00 67.76 a 266.00 650.00 969.00 4888.37
1911 916.50 965.00 611.50 490.50 215.00 2.00 1.50 24.00 38.50 526.50 870.00 1243.00 5904.00
1912 1335.00 1008.00 1201.50 532.00 197.00 78.50 3.50 4.50 265.50 435.00 701.38 a 1059.00 6820.88
1913 1177.50 1184.50 908.00 428.79 a 186.52 a 61.50 0.00 0.00 a 207.00 501.50 621.00 1305.00 6581.31
1914 1046.00 1018.00 798.50 473.00 221.50 7.00 3.50 1.50 31.00 342.00 593.00 1348.50 5883.50
1915 1208.00 832.00 1098.00 372.00 355.50 32.50 l 22.50 16.50 f 98.00 296.50 641.00 1061.00 5984.50
1916 1352.50 856.50 604.50 a 528.50 255.50 42.00 0.00 9.00 136.50 459.00 839.00 1281.00 6364.00
1917 1194.50 898.50 949.50 618.00 414.50 89.50 0.00 10.50 76.50 527.00 587.00 1063.00 6428.50
1918 1335.50 848.50 593.00 670.00 177.00 25.00 0.00 d 0.00 188.50 290.50 835.00 1088.50 6051.50
1919 1237.50 1116.00 789.00 502.50 208.00 106.50 0.00 0.00 e 49.50 531.50 952.50 1149.50 6642.50
1920 996.00 929.00 760.50 714.00 246.00 65.00 0.50 16.00 84.00 319.00 818.00 1039.50 5987.50
1921 962.50 772.50 540.50 442.00 158.88 c 17.00 0.00 k 1.00 g 0.00 z 215.00 605.00 998.00 4711.38
1922 1197.50 952.50 829.50 0.00 z 0.00 z 0.00 h 4.50 m 0.00 e 2.50 q 314.50 f 749.50 1008.02 a 4737.02
1923 893.50 1027.00 933.62 a 494.00 301.00 0.00 i 0.00 0.53 b 91.00 563.00 700.50 1145.50 6149.65
1924 1191.50 860.50 1121.50 501.50 374.50 55.00 4.00 1.50 178.00 287.00 703.50 1411.00 6689.50
1925 1354.00 733.00 668.05 a 362.50 202.00 16.50 5.50 3.00 k 88.50 575.00 701.00 940.50 5646.55
1926 1126.33 a 746.00 801.00 579.00 150.50 50.00 0.00 0.00 150.00 c 318.00 759.00 1176.50 5856.33
1927 1085.00 835.50 916.50 459.50 140.50 113.50 1.00 25.00 134.00 268.50 675.00 1228.12 a 5882.12
1928 964.50 985.00 776.00 582.00 228.00 136.00 0.00 9.50 116.50 403.50 788.00 1084.50 6073.50
1929 1302.00 1290.50 764.00 473.00 281.00 70.50 5.50 0.00 194.50 377.00 1033.00 918.50 6709.50
1930 1494.00 637.50 0.00 z 323.50 270.50 76.61 b 1.00 0.00 b 53.50 426.00 809.00 1171.00 5262.61
1931 1046.50 758.50 888.50 524.50 319.50 4.50 0.00 0.50 35.50 298.00 788.50 1039.00 5703.50
1932 1181.50 762.00 976.00 404.00 141.50 13.00 0.00 b 2.50 96.50 446.50 714.83 a 1285.97 b 6024.29
1933 944.00 1082.85 b 691.00 500.50 156.00 f 0.00 0.00 f 14.47 a 36.50 306.00 649.50 752.50 4977.31
1934 840.00 787.00 678.50 351.43 b 61.48 a 8.50 0.00 13.00 134.00 229.00 636.00 959.97 a 4698.88
1935 888.50 773.00 617.00 512.50 377.50 44.50 0.00 b 5.50 113.50 370.00 832.50 978.05 a 5512.55
1936 1127.00 1206.00 693.37 a 440.50 134.85 a 26.00 0.00 0.55 c 125.50 547.15 a 836.40 e 971.00 6108.32
1937 1471.00 914.50 898.00 467.00 175.15 a 93.50 0.00 a 0.00 43.50 336.00 796.07 b 1081.50 6276.22
1938 989.50 808.00 610.50 459.50 240.50 28.00 0.00 0.00 35.56 c 195.00 819.50 952.50 5138.56
1939 955.50 1091.50 746.00 440.00 105.00 16.50 0.00 16.50 53.00 330.00 685.50 833.00 5272.50
1940 1449.50 878.00 718.50 455.50 170.50 36.00 6.00 3.10 a 53.00 236.50 825.00 935.00 5766.60
1941 1018.50 871.00 831.50 494.00 138.00 72.50 0.00 a 0.00 118.50 380.00 625.86 a 1009.50 5559.36
1942 1270.50 1069.50 812.00 348.50 242.50 36.50 3.50 0.00 c 146.50 361.50 622.22 c 695.00 g 4913.22
1943 1006.00 689.00 869.03 a 279.11 b 320.00 58.50 0.00 0.00 62.00 371.00 654.50 995.00 5304.14
1944 1021.50 968.00 900.50 656.50 153.00 47.00 0.00 7.50 65.00 307.00 726.50 1077.00 5929.50
1945 1059.00 859.50 602.50 601.00 251.00 132.00 1.50 12.50 124.00 309.48 a 620.00 1110.50 5682.98
1946 986.00 769.00 625.50 238.00 93.00 w 21.50 n 0.00 26.50 71.50 443.00 969.00 878.50 5007.00
1947 1049.50 982.00 928.00 537.00 259.00 77.00 0.00 0.00 53.50 173.50 j 879.00 1043.50 5808.50
1948 1126.50 1075.00 1070.07 d 312.50 183.00 32.00 0.00 4.13 a 57.41 a 365.11 d 885.60 e 1065.33 e 6176.66
1949 1186.50 f 943.60 c 819.20 d 452.00 179.80 a 37.00 0.00 11.37 a 75.00 d 446.40 a 536.50 965.00 4465.87
1950 1126.00 737.50 840.50 483.62 a 301.00 25.00 5.50 15.00 130.50 233.00 780.50 912.00 5590.12
1951 1145.40 b 841.50 912.95 a 583.00 200.98 a 142.00 23.50 12.50 124.50 452.00 852.00 1144.50 6434.83
1952 983.50 868.50 919.00 503.00 244.00 0.00 8.00 0.00 54.00 399.00 894.50 1104.00 5977.50
1953 813.00 894.00 660.50 593.00 310.00 9.50 0.00 5.50 38.00 310.50 707.50 1098.50 5440.00
1954 1070.00 585.00 886.50 310.00 298.00 27.50 0.50 0.00 a 36.50 420.80 d 614.50 926.00 5175.30
1955 1121.50 986.50 784.50 368.50 141.00 102.86 b 0.00 0.00 115.00 282.00 862.50 1028.50 5792.86
1956 1043.50 1040.50 764.00 551.00 134.50 5.00 0.00 30.50 68.50 270.00 810.00 a 912.43 a 5629.93
1957 1291.31 b 769.00 836.00 595.50 319.00 45.50 0.00 1.50 150.50 483.50 864.50 874.00 6230.31
1958 1014.50 894.00 1120.00 585.50 155.50 30.50 22.00 5.50 59.50 381.82 a 0.00 z 957.50 5226.32
1959 1081.50 1027.50 732.50 464.00 225.00 15.00 0.00 5.00 148.50 502.00 816.21 a 902.00 5919.21
1960 1221.00 1312.50 996.00 400.50 227.00 53.00 9.50 0.00 81.00 337.50 686.00 1051.50 6375.50
1961 1016.50 802.50 727.50 578.50 287.00 49.50 0.00 0.00 230.69 a 410.00 839.00 1153.00 6094.19
1962 1247.50 835.00 837.00 404.48 a 0.00 z 0.00 z 3.00 3.00 90.50 275.00 0.00 z 881.00 4576.48
1963 1382.00 735.00 0.00 z 352.50 115.00 4.50 0.00 0.00 42.00 129.00 615.50 1148.72 d 4524.22
1964 938.00 1015.00 857.15 a 478.50 183.00 44.00 0.00 17.00 93.10 a 325.50 710.50 975.50 5637.25
1965 890.50 923.00 1069.00 330.00 134.50 17.50 0.50 10.00 292.00 243.87 a 591.00 882.00 5383.87
1966 1256.00 1003.50 622.50 496.50 146.50 43.00 0.00 18.00 77.59 a 360.00 657.50 1041.50 5722.59
1967 910.50 775.00 605.00 414.50 316.50 36.21 a 2.58 a 10.50 82.00 326.00 745.00 1175.00 5398.79
1968 998.50 863.00 669.00 503.00 316.00 12.50 1.50 25.50 97.00 266.00 772.50 1161.50 5686.00
1969 984.00 853.00 999.00 364.50 184.00 98.00 0.00 b 3.50 27.50 615.50 722.00 969.50 5820.50
1970 1058.50 735.00 958.50 535.50 130.00 72.00 3.00 0.00 156.00 519.50 716.00 960.00 5844.00
1971 1070.50 951.00 748.13 a 451.00 257.50 7.50 6.50 1.00 158.00 351.50 743.50 977.50 5723.63
1972 1034.88 a 812.00 580.50 0.00 z 221.13 a 3.50 24.50 31.50 92.00 0.00 z 965.00 1276.50 5041.52
1973 1112.00 829.00 0.00 z 560.50 237.15 a 29.00 6.20 a 0.00 165.50 267.50 754.14 a 1022.50 4983.49
1974 1200.00 738.00 616.00 398.00 109.00 36.00 0.00 4.50 154.50 284.00 729.50 0.00 z 4269.50
1975 1048.00 928.50 0.00 z 463.50 218.55 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 920.70 a 3579.25
1976 1018.50 681.50 757.50 403.50 226.50 20.50 0.00 z 3.62 a 102.32 b 508.92 a 794.00 931.11 c 5447.96
1977 1234.32 a 739.00 782.75 a 352.76 a 53.50 k 0.00 z 2.67 b 2.00 11.79 b 0.00 z 0.00 z 0.00 z 3125.28
1978 1326.69 d 1129.50 0.00 z 387.78 c 226.30 a 42.00 3.74 b 27.00 52.50 384.29 b 835.50 979.50 g 4415.30
1979 1519.00 b 943.50 739.87 a 486.67 c 283.00 56.54 d 0.00 c 23.52 b 41.50 f 348.20 c 936.72 a 872.00 6209.01
1980 1260.67 a 871.61 b 918.50 554.50 249.00 8.28 a 0.00 0.50 51.00 364.50 521.50 g 872.17 e 5150.73
1981 913.47 a 810.50 740.50 263.00 270.50 19.50 0.00 a 11.00 28.00 385.00 585.54 b 944.50 4971.50
1982 1157.50 976.50 716.50 508.50 229.00 78.00 0.50 5.50 99.00 402.50 824.50 1001.50 5999.50
1983 1012.00 790.50 830.50 645.00 335.00 79.50 0.00 0.00 89.00 365.50 762.00 1505.00 6414.00
1984 1178.50 886.00 882.50 703.00 199.00 34.00 0.00 0.00 152.50 497.50 697.50 986.50 6217.00
1985 1202.00 1018.00 704.00 354.00 153.50 51.00 0.00 7.00 210.50 412.00 981.11 c 1147.50 6240.61
1986 749.00 829.00 535.50 388.50 170.50 14.00 0.00 0.50 80.00 387.50 746.00 996.50 4897.00
1987 988.50 752.50 828.00 393.50 132.00 10.50 5.00 29.00 75.50 386.50 727.50 1050.00 5378.50
1988 1222.50 954.41 a 775.50 453.50 187.00 15.50 14.50 5.00 108.00 361.50 698.50 935.00 5730.91
1989 924.00 1120.50 700.50 380.50 0.00 z 0.00 z 0.00 z 0.00 b 39.00 p 393.00 693.50 579.50 k 4212.00
1990 1001.00 997.50 781.72 a 464.50 259.00 h 4.50 11.50 1.50 75.50 421.08 a 433.00 j 1275.00 5033.80
1991 1197.00 694.00 747.58 e 425.50 131.00 2.50 k 3.00 11.50 98.00 432.50 893.08 d 1016.50 5649.65
1992 1043.00 727.00 381.00 l 367.00 186.50 65.00 5.00 45.00 62.00 382.50 961.00 1306.50 5150.50
1993 1335.00 1101.50 778.50 531.00 217.00 71.00 0.50 26.50 181.00 468.00 958.50 984.50 6653.00
1994 1074.50 1077.50 661.00 520.00 146.00 1.50 4.50 0.00 83.00 381.50 847.50 919.00 5716.00
1995 1045.50 797.50 786.00 638.00 448.00 75.00 21.00 12.00 151.00 446.50 706.50 984.50 6111.50
1996 1181.50 882.50 937.00 483.00 211.00 0.00 2.50 k 2.00 163.00 414.50 912.00 1052.00 6238.50
1997 1168.50 973.00 714.00 673.50 267.63 a 18.50 4.50 14.50 89.50 465.50 886.00 1145.00 6420.13
1998 1036.50 810.50 872.50 532.24 a 115.73 a 100.50 0.00 0.50 32.50 366.50 670.34 a 1055.50 5593.32
1999 994.00 718.67 a 741.42 a 570.00 250.50 52.24 a 0.00 b 2.50 i 193.97 a 376.00 508.93 b 934.28 b 5339.99
2000 1002.00 745.50 733.31 b 439.00 168.95 a 20.50 j 0.00 0.00 138.33 c 385.00 1007.07 a 1203.00 5822.16
2001 1120.00 1026.48 c 558.00 i 391.55 a 211.50 31.00 0.00 0.00 c 70.00 386.50 646.50 996.50 4880.03
2002 1051.00 914.50 953.00 413.50 216.50 10.00 0.00 1.00 109.00 567.00 797.00 940.00 5972.50
2003 994.00 1015.50 723.50 372.00 226.50 47.50 0.00 2.50 122.50 266.00 835.50 955.50 5561.00
2004 1026.00 990.50 425.00 i 454.00 160.50 64.00 22.00 23.50 79.00 372.00 802.00 939.50 4933.00
2005 1024.00 774.00 708.50 433.50 206.00 41.50 4.00 1.00 42.50 350.00 638.00 1053.50 5276.50
2006 832.00 917.50 613.00 f 366.00 143.08 e 0.50 w 0.00 k 8.50 130.00 i 379.00 l 708.00 1059.00 4034.08
2007 1055.00 h 1088.00 613.80 a 410.00 l 175.00 16.00 k 0.00 g 0.00 51.50 i 209.00 k 713.00 1217.02 b 3806.82
2008 1182.17 e 998.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 116.50 395.00 666.00 1148.50 4506.67
2009 1009.50 742.00 763.50 564.50 230.00 60.00 6.50 8.00 136.00 709.50 648.50 1258.00 6136.00
2010 1052.00 1014.00 755.00 463.50 322.00 27.00 6.50 0.00 35.00 299.00 719.50 944.50 5638.00
2011 1118.00 1037.00 750.00 484.00 314.50 19.00 0.00 0.00 123.50 368.00 740.69 a 1058.00 6012.69
2012 940.50 965.00 455.00 342.00 133.00 4.50 0.00 3.00 69.50 458.50 574.00 1044.00 4989.00
2013 1052.50 930.50 868.00 48.00 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 2851.00
Period of Record Statistics
MEAN 1100.98 905.38 788.21 473.51 224.22 43.49 3.59 7.35 100.24 385.04 755.15 1052.33 5874.55
S.D. 150.75 141.65 151.21 99.52 75.67 33.50 6.63 9.52 54.18 98.84 112.64 139.92 464.33
SKEW 0.49 0.44 0.39 0.13 0.51 0.83 2.31 1.53 0.99 0.39 0.29 0.89 -0.20
MAX 1519.00 1312.50 1201.50 714.00 448.00 142.00 28.00 45.00 292.00 709.50 1033.00 1505.00 6820.88
MIN 749.00 585.00 419.61 238.00 61.48 0.00 0.00 0.00 11.79 129.00 508.93 752.50 4698.88
NO YRS 107 109 99 103 100 95 98 103 101 101 102 104 70