LONGMONT 2 ESE, COLORADO

Monthly Total Heating Degree Days

(055116)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200411
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
1893 974.84 c 762.50 h 851.31 e 650.56 c 393.59 c 0.00 z 0.00 z 0.00 z 180.00 c 297.00 m 0.00 z 0.00 z 3050.29
1894 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
1895 1187.00 1170.30 a 925.50 443.50 285.00 123.00 58.00 6.50 160.50 572.98 a 933.00 1156.50 7021.78
1896 1021.00 906.50 857.00 507.00 197.50 25.50 0.00 21.50 170.50 522.00 1000.34 a 947.64 b 6176.48
1897 1231.00 958.00 957.50 454.50 83.50 58.00 43.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3786.00
1898 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
1899 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
1900 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
1901 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
1902 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
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 0.00 z 0.00
1904 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
1905 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
1906 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
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 58.50 0.00 3.50 150.00 449.50 712.50 1415.00 2789.00
1910 1100.00 945.50 496.00 e 421.00 291.73 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3254.23
1911 1014.73 a 1095.00 662.50 530.50 220.50 20.00 4.00 38.00 79.50 649.00 935.69 a 1346.00 6595.42
1912 1196.50 1164.50 1265.50 564.00 329.50 115.50 31.52 a 4.50 355.18 b 456.50 h 787.50 1176.21 e 6990.41
1913 1279.55 b 1244.50 886.50 530.00 247.50 48.00 17.64 b 0.00 251.25 b 566.50 709.00 1499.00 7279.44
1914 1089.50 1089.00 817.50 572.00 250.50 43.50 3.50 16.00 132.50 432.50 712.50 1343.69 b 6502.69
1915 1201.54 d 915.04 c 972.00 401.00 373.50 116.50 45.50 49.00 174.00 424.50 697.50 1116.00 a 6486.08
1916 1382.17 b 930.50 616.00 538.45 a 336.35 a 79.66 a 4.50 28.00 204.83 a 581.50 944.50 1274.50 6920.95
1917 1283.50 932.00 1049.87 a 660.00 a 516.00 99.83 a 5.34 b 36.50 111.00 f 591.00 691.50 975.47 a 6841.01
1918 1421.00 884.00 647.50 672.93 a 270.00 27.50 21.00 10.00 280.00 0.00 z 967.50 1200.00 6401.43
1919 1121.17 a 1001.50 812.00 500.00 241.50 94.00 19.00 2.00 131.50 648.50 1028.50 1249.00 6848.67
1920 1079.00 1026.00 935.50 798.10 a 257.00 88.00 3.50 63.50 194.00 521.00 930.00 1125.82 a 7021.42
1921 1135.00 892.50 690.00 651.00 281.50 67.00 25.50 12.40 a 159.50 420.71 c 782.00 1062.50 6179.61
1922 1393.00 1072.50 853.00 621.50 289.00 55.00 29.00 0.00 105.50 464.50 888.00 1056.50 6827.50
1923 917.50 1136.00 1046.50 576.50 277.50 75.00 0.00 10.00 152.50 652.00 740.00 1152.50 6736.00
1924 1329.50 876.73 a 1133.00 551.50 380.00 57.00 8.50 0.00 218.00 404.50 740.00 1404.50 7103.23
1925 1141.00 761.50 689.50 372.00 172.00 34.50 7.00 4.50 125.00 685.00 834.50 1133.00 5959.50
1926 1278.50 785.50 841.50 509.50 229.50 38.00 6.50 0.00 180.50 392.00 723.50 1262.00 6247.00
1927 994.00 857.50 893.50 497.00 174.00 93.50 6.00 34.50 201.50 412.00 732.00 1330.50 6226.00
1928 974.50 1003.50 760.50 571.50 257.50 174.00 5.50 26.00 178.50 517.50 857.00 1255.50 6581.50
1929 1205.50 1309.00 815.00 583.50 328.50 55.00 9.50 3.00 236.00 495.50 1146.50 1047.50 7234.50
1930 1664.50 767.00 917.00 346.00 363.00 50.00 17.50 4.00 141.00 552.50 824.50 1213.00 6860.00
1931 1049.00 820.00 904.50 555.00 341.00 26.50 13.00 12.00 93.00 426.50 939.00 1115.50 6295.00
1932 1262.00 862.00 1054.50 488.50 208.50 67.50 0.00 20.00 145.50 591.00 744.00 1468.50 6912.00
1933 1065.00 1129.00 739.00 623.00 351.00 8.50 0.00 21.00 92.50 374.50 706.50 811.00 5921.00
1934 933.00 915.50 679.00 454.50 121.50 29.00 0.00 7.00 236.50 324.50 692.50 946.50 5339.50
1935 992.50 886.00 740.50 589.00 477.50 77.00 0.00 5.50 163.00 504.00 908.50 1037.00 6380.50
1936 1109.00 1232.00 806.50 480.00 173.50 43.50 0.00 11.00 157.50 536.00 827.00 1059.00 6435.00
1937 1626.47 a 984.50 931.00 541.55 a 248.50 170.00 0.00 0.00 93.00 423.00 837.50 1155.00 7010.52
1938 1074.00 915.00 719.50 533.50 337.50 36.00 1.50 0.50 73.50 381.00 956.00 1164.50 6192.50
1939 1064.00 1172.00 839.00 541.50 172.50 64.00 0.00 21.50 99.00 462.00 803.00 921.50 6160.00
1940 1452.00 925.00 722.00 558.00 238.00 58.50 7.00 5.50 94.50 382.00 939.00 1074.50 6456.00
1941 1109.00 889.00 903.50 585.00 230.00 128.00 2.00 23.00 208.50 514.50 786.50 1098.00 6477.00
1942 1367.50 1299.00 937.00 456.50 341.50 91.00 11.00 3.50 165.50 508.50 746.50 969.00 6896.50
1943 1083.50 808.50 1003.50 349.00 402.50 101.50 0.00 0.00 130.50 448.00 799.50 1072.50 6199.00
1944 1173.50 990.50 989.00 685.50 247.50 62.50 4.00 8.00 132.50 425.50 810.00 1218.00 6746.50
1945 1139.00 965.50 816.00 744.83 a 278.50 176.50 8.00 19.00 266.50 410.50 753.00 1130.00 6707.33
1946 1118.50 897.50 665.00 327.50 394.00 71.00 0.00 25.00 147.00 540.00 1055.50 950.00 6191.00
1947 1130.50 1002.81 a 950.00 555.50 311.50 135.00 0.00 5.50 87.00 335.50 1005.00 1020.50 6538.81
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3.00 61.00 460.00 835.86 a 1129.00 2488.86
1949 1589.00 954.50 742.00 434.48 a 211.83 a 73.00 0.00 1.50 f 126.50 515.00 543.62 a 1065.50 6255.44
1950 1239.00 784.50 872.50 524.50 405.00 74.00 7.50 26.50 186.00 289.00 851.50 994.50 6254.50
1951 1170.00 955.50 950.50 641.00 292.50 183.00 33.50 16.50 177.00 534.23 a 892.50 1118.50 6964.73
1952 1145.50 913.50 1018.50 509.50 249.00 10.50 30.50 6.00 111.67 c 450.00 1042.76 a 1134.50 6621.93
1953 862.32 a 963.93 a 700.50 718.00 370.00 27.50 0.00 6.00 86.00 401.00 741.50 1084.50 5961.24
1954 1014.00 649.00 957.50 371.00 289.85 a 55.00 5.00 10.50 73.00 449.00 727.76 a 1044.50 5646.11
1955 1390.00 1207.50 925.50 486.00 201.00 120.00 1.50 8.00 147.00 420.00 934.00 1037.50 6878.00
1956 1022.00 1201.50 873.50 599.00 181.50 3.00 5.50 19.50 119.50 390.00 942.50 983.50 6341.00
1957 1346.50 772.50 833.00 732.00 332.00 100.50 1.00 1.00 193.00 459.50 885.50 859.50 6516.00
1958 1110.50 846.50 1074.50 607.00 171.50 43.50 11.50 9.50 119.00 426.50 809.00 1036.50 6265.50
1959 1200.50 1059.00 863.50 641.50 279.50 35.00 10.85 a 14.00 217.50 605.50 879.00 997.50 6803.35
1960 1241.00 1171.50 915.50 472.00 292.00 45.00 8.00 20.50 138.50 420.50 803.50 1140.50 6668.50
1961 1144.50 860.50 876.50 586.00 300.50 62.50 14.00 0.00 287.00 479.00 954.00 1208.50 6773.00
1962 1549.50 946.50 959.50 449.48 a 203.50 71.50 1.00 27.50 140.50 357.00 727.00 1049.00 6481.98
1963 1522.50 771.50 881.00 445.00 138.00 48.00 3.10 a 6.00 53.00 255.00 742.00 1233.50 6098.60
1964 1046.50 1088.00 998.50 568.00 243.00 101.50 0.00 40.50 163.50 427.50 799.00 1047.00 6523.00
1965 1003.50 1083.50 1173.00 446.00 285.50 88.00 5.00 21.50 362.50 376.50 673.00 1030.23 a 6548.23
1966 1217.00 1089.93 a 717.00 575.00 210.00 93.50 0.00 22.00 81.50 495.50 817.50 1142.50 6461.43
1967 1049.50 869.50 695.00 477.00 364.77 a 142.00 1.00 17.00 147.93 a 395.50 821.50 1254.50 6235.20
1968 1160.50 919.50 756.00 650.50 322.00 39.00 6.00 52.00 173.00 444.50 896.50 1140.50 6560.00
1969 1061.00 887.00 1033.50 378.00 206.50 167.00 2.00 0.00 73.00 793.50 818.00 1020.00 6439.50
1970 1087.50 764.50 954.50 648.00 182.50 76.50 0.00 4.00 214.50 593.50 785.50 1048.50 6359.50
1971 1062.50 998.00 858.50 530.00 301.50 32.00 21.00 0.00 306.00 521.32 a 839.50 1114.97 a 6585.28
1972 1129.50 881.50 643.00 514.00 252.50 5.50 54.00 22.50 159.00 482.50 1062.50 1410.00 6616.50
1973 1303.50 948.00 825.00 698.50 310.00 59.50 31.50 0.00 221.50 412.00 824.00 1077.00 6710.50
1974 1344.50 872.00 753.00 534.00 155.50 80.50 0.00 24.50 241.00 413.50 809.00 1109.50 6337.00
1975 1097.00 1037.50 865.50 666.00 333.00 110.00 0.00 12.00 184.14 a 414.50 868.00 990.50 6578.14
1976 1155.27 a 751.50 877.00 462.00 266.00 59.50 0.00 13.00 174.50 534.50 836.50 973.00 6102.77
1977 1232.00 783.00 804.00 468.00 133.50 0.00 2.00 16.00 66.50 414.00 776.00 981.00 5676.00
1978 1339.50 1064.50 744.00 449.00 341.50 93.00 4.00 28.00 111.50 424.00 836.50 1321.50 6757.00
1979 1524.00 987.00 783.00 488.00 329.00 100.50 0.00 38.00 73.50 368.00 1063.00 1075.50 6829.50
1980 1320.00 1086.50 933.00 577.76 a 308.50 17.00 0.00 4.00 80.50 473.27 a 750.50 813.50 6364.53
1981 958.00 906.89 a 773.50 322.50 283.50 22.00 5.50 12.50 41.00 490.50 652.50 1019.38 a 5487.77
1982 1162.00 960.50 739.50 495.00 285.50 103.50 7.00 0.00 165.00 523.50 899.00 1091.50 6432.00
1983 1006.50 816.00 855.50 671.00 408.00 132.50 1.50 0.00 95.00 387.50 852.00 1515.00 6740.50
1984 1370.00 924.50 875.00 694.50 203.50 52.00 0.00 3.50 240.50 685.50 818.50 1082.50 6950.00
1985 1295.50 1154.00 745.00 412.00 174.50 46.00 0.00 8.00 241.50 494.00 1101.50 1234.50 6906.50
1986 877.50 820.00 555.00 477.00 271.00 21.00 0.00 0.00 157.50 502.50 862.00 1142.00 5685.50
1987 1155.00 854.50 880.00 443.50 182.50 21.50 13.00 35.00 146.50 474.00 811.50 1180.00 6197.00
1988 1384.15 a 1051.00 856.50 517.00 224.50 21.50 10.50 9.00 212.00 453.50 819.00 1285.50 6844.15
1989 1152.50 1329.00 847.00 552.50 262.50 103.00 2.00 9.50 208.00 494.50 783.46 d 1291.50 7035.46
1990 1056.50 996.50 922.50 558.00 336.00 25.50 26.00 11.50 105.00 487.50 727.00 1322.50 6574.50
1991 1248.00 747.50 717.50 519.00 191.00 30.50 13.00 6.00 136.50 497.50 943.50 1057.00 6107.00
1992 1129.00 793.50 728.50 397.50 205.50 63.50 21.50 66.00 45.00 s 384.00 989.50 1300.50 6079.00
1993 1350.50 1073.00 731.00 540.00 232.00 108.00 13.50 32.50 253.00 578.00 1013.00 1066.50 6991.00
1994 1036.00 1072.00 724.50 538.50 188.50 9.00 11.50 0.00 68.50 444.50 886.50 957.50 5937.00
1995 1083.00 791.50 769.00 627.50 442.00 119.00 15.00 12.50 209.50 285.50 i 711.00 983.00 5763.00
1996 1222.50 941.00 899.00 493.00 235.50 24.00 4.50 10.00 218.00 463.50 879.50 976.50 6367.00
1997 1248.50 975.00 765.50 735.00 281.00 47.50 7.00 27.00 122.50 519.00 925.50 1141.50 6795.00
1998 1054.50 0.00 z 893.50 630.00 185.00 149.00 0.00 1.50 60.50 512.00 704.00 1177.00 5367.00
1999 1019.00 818.74 a 760.50 687.50 330.50 90.00 0.00 a 10.33 a 263.79 a 524.42 a 617.50 919.67 a 6041.95
2000 988.00 788.18 a 763.50 485.50 204.50 71.90 a 0.55 c 1.00 187.00 522.00 1074.00 1216.50 6302.63
2001 1194.00 1062.50 855.60 a 505.00 288.00 66.50 0.00 a 11.00 102.00 486.50 745.00 1081.50 6397.60
2002 1125.00 983.50 1017.00 486.50 326.00 33.50 0.00 23.50 157.00 622.50 862.00 959.00 6595.50
2003 879.00 986.00 709.50 388.00 242.50 59.50 0.00 6.50 143.00 319.50 860.00 1024.00 5617.50
2004 1048.50 959.00 526.00 464.50 189.00 96.50 20.00 32.50 108.50 412.50 787.00 0.00 z 4644.00
Period of Record Statistics
MEAN 1174.36 962.41 842.44 536.52 270.99 69.86 8.76 14.38 158.95 475.71 840.62 1121.30 6478.51
S.D. 167.59 141.59 134.80 100.73 79.53 42.55 12.26 14.22 66.19 90.94 114.32 144.00 399.11
SKEW 0.73 0.47 0.19 0.17 0.39 0.68 2.02 1.40 0.65 0.60 0.35 0.56 -0.51
MAX 1664.50 1329.00 1265.50 798.10 516.00 183.00 58.00 66.00 362.50 793.50 1146.50 1515.00 7279.44
MIN 862.32 649.00 496.00 322.50 83.50 0.00 0.00 0.00 41.00 255.00 543.62 811.00 5339.50
NO YRS 98 96 98 98 98 97 97 96 96 94 97 96 87