NORTHDALE, COLORADO

Monthly Total Heating Degree Days

(055970)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200212
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
1930 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 113.00 h 8.50 29.50 263.50 642.00 1010.50 1308.00 3262.00
1931 1275.00 890.00 969.00 607.50 465.50 116.50 11.50 19.00 166.50 531.50 1054.00 1044.50 i 6106.00
1932 1611.50 1006.00 940.00 415.50 j 449.50 219.00 10.00 40.50 251.50 621.00 933.00 1413.50 7495.50
1933 1499.50 1466.50 873.00 776.00 558.50 58.50 4.00 31.50 131.50 496.50 844.00 1091.50 7831.00
1934 1085.50 814.00 723.00 535.00 241.00 215.50 5.50 29.50 238.50 529.50 907.50 1176.50 6501.00
1935 1168.00 974.50 1023.00 638.00 516.00 255.50 104.00 157.50 371.00 787.50 1115.00 1349.50 8459.50
1936 1456.50 1169.50 1015.50 739.00 528.50 134.00 33.50 82.00 394.50 718.00 1103.50 1297.00 8671.50
1937 1902.00 1309.50 968.00 649.00 307.00 127.00 4.50 k 2.50 178.00 504.00 876.00 1061.50 7884.50
1938 1230.50 1021.50 922.50 644.00 432.00 9.50 r 33.00 19.50 182.50 518.50 1089.50 1182.00 7275.50
1939 1317.00 1400.50 980.00 499.00 302.50 126.50 7.50 14.00 149.00 607.50 812.00 1053.00 7268.50
1940 1313.50 1053.50 837.00 573.50 311.50 99.50 2.00 29.00 185.00 516.50 1022.00 1160.50 7103.50
1941 1265.00 922.50 882.50 762.00 393.00 247.50 19.00 65.50 320.50 611.00 889.00 1148.50 7526.00
1942 1352.00 1249.50 1110.00 623.50 508.00 180.50 9.00 46.00 239.00 547.50 823.00 1068.50 7756.50
1943 1221.29 b 1012.48 c 895.00 493.00 413.50 177.50 18.50 18.50 189.00 571.00 880.00 1173.50 7063.27
1944 1323.50 1113.00 1046.00 802.00 441.50 252.00 20.00 0.00 z 186.50 488.50 942.50 1194.00 7809.50
1945 1285.00 950.50 976.00 752.50 391.50 232.00 11.00 7.50 216.50 562.00 1002.00 1394.50 7781.00
1946 1329.50 1066.00 820.50 467.00 401.50 82.50 5.50 3.00 196.00 618.00 945.50 1016.00 6951.00
1947 1424.50 875.50 869.00 682.50 291.50 198.00 8.00 41.00 134.00 478.00 1044.50 1249.50 7296.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 26.50 138.50 565.50 1048.00 1226.57 a 3005.07
1949 1463.50 1341.00 963.50 579.00 362.00 g 155.36 b 1.50 59.00 158.50 617.50 729.00 1328.50 7396.36
1950 1362.00 1033.00 921.00 604.00 436.50 154.50 15.50 35.00 271.50 395.50 812.50 999.00 7040.00
1951 1253.50 985.50 951.50 654.50 376.50 204.50 4.00 44.00 227.50 607.50 1036.50 1404.50 7750.00
1952 1303.50 1210.00 1182.50 590.50 352.50 105.50 15.50 6.00 153.50 492.50 1115.00 1327.50 7854.50
1953 1137.00 1066.50 887.50 703.00 519.50 96.50 7.00 38.50 192.50 504.50 857.00 1313.00 7322.50
1954 1086.00 794.00 987.00 513.50 325.50 152.00 1.00 44.00 178.00 473.50 830.00 1262.50 6647.00
1955 1453.00 1386.50 1014.00 717.00 430.00 197.00 11.00 1.50 193.50 511.50 925.50 1169.22 a 8009.72
1956 996.00 1140.00 914.00 637.50 319.50 48.00 33.00 63.03 a 147.50 583.50 1026.00 1237.50 7145.53
1957 1192.00 930.00 861.00 670.34 a 497.50 134.50 11.00 30.50 259.50 540.00 1024.00 1084.00 7234.34
1958 1235.50 918.50 1033.50 710.50 312.00 81.00 17.50 10.50 173.00 529.58 a 867.00 1037.00 6925.58
1959 1221.40 a 1040.00 910.00 609.50 410.00 82.50 3.00 25.50 209.50 583.00 908.50 1142.00 7144.90
1960 1474.50 1319.00 950.50 616.50 431.00 83.50 g 15.50 a 20.50 130.50 594.50 862.00 1315.00 7729.50
1961 1397.50 953.50 906.50 636.00 369.00 90.50 6.50 18.00 342.50 595.00 968.00 1393.50 7676.50
1962 1335.50 923.00 1102.00 557.50 434.50 159.00 14.00 39.00 183.00 493.00 819.50 1107.50 7167.50
1963 1566.50 876.50 941.00 669.50 309.00 141.50 7.23 a 16.50 113.00 400.00 823.00 1230.50 7094.23
1964 1320.00 1188.50 1110.00 734.00 404.00 147.50 2.50 41.50 210.50 510.00 1032.00 1287.50 7988.00
1965 1182.00 1101.00 987.00 680.50 489.50 266.00 10.00 47.00 299.00 503.50 787.00 1176.00 7528.50
1966 1351.60 a 1250.50 836.50 662.50 327.50 142.00 2.00 13.00 158.00 565.00 806.00 1173.35 a 7287.95
1967 1353.50 952.50 791.00 688.00 487.00 197.50 2.00 15.50 175.50 510.50 883.50 1387.50 7444.00
1968 1441.00 1021.00 883.50 774.50 514.50 118.50 18.50 105.50 270.50 543.00 926.50 1404.00 8021.00
1969 1186.00 1105.50 1152.50 596.50 303.00 164.00 7.00 6.50 154.00 711.00 911.50 1113.50 7411.00
1970 1193.00 871.00 986.50 800.00 352.00 199.50 6.50 3.00 287.50 700.00 872.50 1274.00 7545.50
1971 1270.50 1012.50 929.00 672.50 478.50 150.50 8.50 8.00 293.00 638.00 999.50 1344.00 7804.50
1972 1204.50 930.00 777.00 640.50 399.50 82.50 2.50 51.50 189.00 510.50 1051.50 1445.00 7284.00
1973 1576.50 1173.00 1016.50 756.50 409.00 173.50 22.50 20.00 290.50 565.50 933.50 1263.00 8200.00
1974 1506.00 1292.50 746.00 714.50 304.50 102.00 11.00 41.00 228.00 493.00 909.50 1285.00 7633.00
1975 1372.00 1112.50 951.50 789.50 508.00 206.00 9.00 84.50 239.00 535.00 1006.50 1255.00 8068.50
1976 1410.50 878.00 899.50 678.50 352.00 131.00 6.50 26.50 199.50 647.50 880.50 1222.00 7332.00
1977 1439.00 965.50 958.00 560.50 432.50 51.50 0.00 19.00 151.55 a 490.00 824.50 1068.00 6960.05
1978 1199.50 1163.50 808.50 591.50 450.00 107.00 33.00 49.00 234.50 487.50 817.00 1446.00 7387.00
1979 1475.50 1269.50 1043.00 622.00 414.50 164.50 22.73 a 63.50 140.50 474.00 1098.00 1209.50 7997.23
1980 1227.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 p 53.00 192.50 562.50 862.00 892.50 3790.00
1981 1039.00 954.00 895.00 527.00 437.50 74.50 3.50 15.00 138.00 569.50 765.00 1107.00 6525.00
1982 1353.50 1046.50 847.50 641.50 373.00 142.50 21.50 5.00 135.50 646.50 915.50 1278.00 7406.50
1983 1210.00 1010.50 914.00 761.50 468.50 163.50 4.50 8.50 124.50 503.00 899.50 1232.50 7300.50
1984 1411.50 1176.50 910.50 711.00 253.00 132.50 0.00 4.00 134.00 664.50 924.50 1203.50 7525.50
1985 1247.00 1154.00 828.50 528.00 353.00 86.50 1.50 13.00 299.50 528.00 935.50 1122.00 7096.50
1986 963.50 829.11 a 718.50 712.00 391.00 87.00 22.00 5.50 249.50 582.00 833.00 1093.00 6486.11
1987 1297.00 995.50 983.50 525.00 376.50 64.00 23.50 44.50 189.50 445.00 919.50 1262.50 7126.00
1988 1445.00 1136.00 915.50 610.00 403.50 85.50 0.50 7.00 224.50 415.00 970.00 1281.50 7494.00
1989 1533.00 1089.00 751.50 509.00 322.50 140.50 6.50 66.00 184.50 605.50 888.50 1208.50 7305.00
1990 1335.00 1039.50 820.50 559.50 440.50 71.50 1.50 37.50 120.50 583.00 928.00 1505.50 7442.50
1991 1543.50 1070.50 963.50 749.50 428.00 185.50 16.00 12.50 213.00 535.00 1000.00 1256.00 7973.00
1992 1425.50 1036.00 0.00 z 486.50 338.50 139.00 38.50 66.50 209.00 477.50 1052.00 1375.00 6644.00
1993 1199.50 1036.00 831.50 586.50 342.50 178.50 25.00 32.00 222.50 595.50 973.50 1195.50 7218.50
1994 1145.00 1111.50 741.50 577.00 322.00 10.00 0.00 3.50 78.00 k 0.00 z 0.00 z 140.00 z 3910.50
1995 1148.00 736.50 823.50 670.50 506.00 207.50 44.50 0.50 182.50 562.50 797.50 1102.50 6782.00
1996 1196.50 873.50 849.00 612.00 248.50 46.50 0.00 4.50 264.50 596.50 893.00 1195.00 6779.50
1997 1285.00 1096.00 867.00 700.00 311.00 115.50 18.00 18.00 116.50 593.00 882.50 1258.50 7261.00
1998 1192.00 1028.00 884.00 699.00 386.50 183.50 0.50 1.00 107.50 550.00 870.00 1126.00 7028.00
1999 1042.00 858.50 746.00 728.50 440.50 144.00 2.00 21.00 235.50 507.22 b 794.00 1192.50 6711.72
2000 1144.50 874.50 884.00 508.00 251.62 a 48.50 8.00 6.50 143.00 539.00 1080.50 1129.00 6617.12
2001 1244.00 989.00 803.50 586.50 289.00 84.00 3.00 11.50 132.50 500.00 860.50 1366.00 6869.50
2002 1335.00 1101.00 938.50 465.50 337.50 32.00 0.00 24.50 190.00 625.00 893.50 1129.00 7071.50
Period of Record Statistics
MEAN 1309.59 1053.44 915.49 639.54 393.07 137.51 12.55 30.14 202.70 554.23 925.31 1222.26 7362.83
S.D. 159.42 154.08 101.41 88.33 77.67 58.94 15.15 27.33 62.84 72.65 94.27 121.64 476.27
SKEW 0.60 0.50 0.27 -0.10 0.03 0.13 3.46 1.89 0.83 0.51 0.29 -0.01 0.38
MAX 1902.00 1466.50 1182.50 802.00 558.50 266.00 104.00 157.50 394.50 787.50 1115.00 1505.50 8671.50
MIN 963.50 736.50 718.50 465.50 241.00 10.00 0.00 0.50 107.50 395.50 729.00 892.50 6486.11
NO YRS 71 70 69 69 69 68 70 72 72 72 72 71 61