RIFLE, COLORADO

Monthly Total Heating Degree Days

(057031)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200711
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
1910 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 45.50 h 466.55 a 684.50 1112.38 a 2263.43
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 84.50 562.50 975.00 1309.00 2931.00
1912 1264.00 1016.00 825.00 623.28 a 327.00 66.50 17.00 2.50 300.00 555.50 849.00 1445.00 7290.78
1913 1543.00 1041.00 894.00 469.00 194.00 52.00 1.50 0.00 202.00 592.00 748.50 1320.50 7057.50
1914 1275.00 1061.50 799.00 460.00 239.50 78.00 0.00 10.50 123.50 486.00 776.50 1309.00 6618.50
1915 1367.50 923.48 a 794.50 374.00 336.50 119.50 6.00 0.50 168.50 489.00 875.00 1159.50 6613.98
1916 1307.50 1077.00 730.50 481.00 342.00 70.50 0.00 11.00 174.00 549.00 973.50 1349.50 7065.50
1917 1497.50 1079.50 1013.00 660.00 448.00 98.50 0.00 10.50 135.00 523.50 696.50 978.50 7140.50
1918 1354.00 1098.50 688.50 598.00 278.00 23.50 0.00 6.50 151.00 441.00 942.50 1293.00 6874.50
1919 1439.50 1069.70 a 857.50 457.50 205.00 84.50 0.00 0.00 105.50 654.50 923.00 1445.00 7241.70
1920 1341.78 a 999.00 929.50 708.50 243.00 63.00 0.00 32.03 a 232.00 561.50 865.18 b 1238.50 7214.00
1921 1170.50 940.50 713.50 590.17 a 280.50 69.00 24.00 9.00 145.50 417.50 775.00 993.50 6128.67
1922 1320.00 1041.00 895.00 624.00 298.50 49.00 0.00 0.50 92.50 512.00 859.50 1057.50 6749.50
1923 1138.50 1017.50 977.00 555.00 270.50 89.50 0.00 11.50 211.50 618.00 848.00 1147.50 6884.50
1924 1502.00 897.00 966.00 577.50 307.00 69.50 0.00 11.00 211.50 496.00 a 812.00 1418.00 7267.50
1925 1470.50 922.50 720.75 a 402.00 149.50 97.76 a 0.00 20.00 83.79 a 492.00 852.93 a 1039.00 6250.73
1926 1239.00 819.26 a 779.65 a 436.50 294.50 a 40.50 1.00 0.50 173.50 335.00 i 823.00 0.00 z 4607.41
1927 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
1928 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
1929 0.00 z 0.00 z 0.00 z 0.00 z 249.50 48.00 0.00 a 9.09 b 0.00 z 0.00 z 0.00 z 0.00 z 306.59
1930 0.00 z 0.00 z 807.00 375.00 357.50 56.50 0.00 1.00 190.00 462.00 962.00 1422.50 4633.50
1931 1363.50 826.00 841.50 431.00 274.87 a 8.50 2.50 1.00 134.50 0.00 z 899.50 1438.00 6220.87
1932 1514.00 1042.96 a 859.50 490.00 248.00 58.50 0.00 18.00 170.50 572.50 882.00 1363.50 7219.46
1933 1470.43 a 1427.48 a 762.00 601.50 360.00 18.50 0.00 a 15.00 76.00 443.50 834.00 1081.50 7089.92
1934 1114.00 716.50 666.50 419.50 82.00 49.00 0.00 0.00 178.50 448.50 679.00 1162.00 5515.50
1935 1185.50 825.50 833.00 476.00 330.84 b 18.00 0.00 1.50 116.50 550.50 890.50 1213.00 6440.84
1936 1312.00 1039.00 801.50 462.00 153.45 a 52.50 0.00 3.50 173.50 383.00 890.50 1191.00 6461.95
1937 1722.50 1066.50 736.00 334.00 118.00 158.50 22.50 9.00 195.00 581.25 a 0.00 z 1090.00 6033.25
1938 1174.50 891.00 784.50 492.50 313.00 15.50 0.50 11.50 113.00 455.70 a 1025.50 1203.00 6480.20
1939 1231.50 1319.50 817.88 a 432.50 204.00 53.50 g 0.00 0.50 f 73.00 484.50 734.50 1008.50 6305.88
1940 1195.50 906.50 700.00 461.50 155.00 33.50 0.50 15.00 105.00 428.00 890.50 1134.00 6025.00
1941 1185.50 829.00 778.50 559.00 215.00 121.50 0.00 6.00 213.00 441.75 e 0.00 z 675.00 k 4349.25
1942 1338.00 1191.50 933.00 459.00 324.50 57.00 0.00 9.00 174.31 a 452.50 752.00 1073.00 6763.81
1943 1168.00 898.00 834.50 343.50 335.00 124.00 2.50 16.02 a 73.00 g 448.00 819.50 1073.50 6062.52
1944 1414.00 976.00 864.50 624.00 260.50 106.50 3.00 23.50 119.50 367.00 774.00 1146.50 6679.00
1945 1108.00 815.50 825.50 650.50 245.00 179.50 4.50 0.00 211.00 422.00 863.50 1285.50 6610.50
1946 1317.00 1009.00 681.50 394.00 306.00 33.00 0.00 4.00 149.00 588.00 886.50 1036.00 6404.00
1947 1368.50 901.00 784.00 553.50 220.50 134.50 1.50 3.00 93.00 275.50 h 951.00 1165.50 6176.00
1948 1321.00 1131.00 1002.50 481.50 204.00 48.00 0.00 19.00 108.50 463.50 1076.00 1246.50 7101.50
1949 1508.00 1268.50 752.50 444.00 252.50 96.00 8.00 1.50 147.00 547.00 725.00 1207.50 6957.50
1950 1366.00 985.50 834.50 493.50 374.50 98.00 9.50 22.00 174.00 336.00 787.00 1059.50 6540.00
1951 1393.00 1076.00 892.28 a 512.88 d 261.43 a 148.00 0.00 11.50 189.00 524.50 962.50 1410.00 7381.10
1952 1433.50 1230.50 1066.50 493.45 a 260.50 37.24 a 6.50 f 14.50 131.00 446.50 985.50 1326.00 7425.19
1953 1118.00 992.50 763.78 b 631.00 419.02 a 67.00 2.00 25.00 122.00 460.50 851.38 a 1233.00 6685.17
1954 1079.00 755.50 851.43 b 409.50 201.50 106.00 0.00 g 16.00 f 138.50 441.75 a 770.50 1137.50 f 4753.68
1955 1426.00 1254.50 962.50 589.00 269.00 92.50 4.00 2.00 158.57 b 501.50 1031.50 1141.50 7432.57
1956 1026.00 1211.00 884.00 546.50 205.38 c 19.50 3.00 37.00 126.50 454.50 1005.50 1321.50 6840.38
1957 1282.00 967.50 779.00 568.00 402.50 105.00 2.50 15.00 202.00 0.00 z 952.50 1154.50 6430.50
1958 1211.00 812.50 851.50 621.50 199.50 30.00 5.50 0.50 142.50 429.50 825.00 0.00 z 5129.00
1959 1212.50 973.50 833.50 537.50 263.00 39.50 21.00 33.50 276.50 578.00 909.00 1153.00 6830.50
1960 1298.00 1159.00 803.86 b 533.00 374.00 72.00 7.00 41.00 136.50 535.50 875.00 1239.00 7073.86
1961 1264.50 945.50 835.00 593.50 252.50 80.50 2.50 0.00 334.00 562.50 920.00 1373.00 7163.50
1962 1450.00 935.00 993.00 498.50 351.00 134.50 23.25 a 45.47 a 184.00 457.50 774.00 1178.50 7024.72
1963 1581.00 819.00 845.00 525.00 241.28 a 93.50 0.00 11.50 90.00 350.50 779.00 1297.00 6632.78
1964 1487.50 1226.00 1039.50 585.50 302.50 109.00 0.00 41.00 171.00 0.00 z 882.00 1195.00 7039.00
1965 1114.50 973.00 941.50 543.00 328.50 99.50 0.00 15.00 0.00 z 468.00 703.50 1064.00 6250.50
1966 1320.50 1100.00 793.50 543.00 236.50 64.00 0.00 14.00 93.50 529.00 710.00 1207.00 6611.00
1967 1282.50 919.50 662.00 524.50 324.00 101.25 b 0.00 0.50 112.50 466.50 795.00 1393.00 6581.25
1968 1465.00 978.00 795.50 663.50 340.50 58.50 8.00 57.50 231.50 479.00 914.00 1300.00 7291.00
1969 1215.00 1033.00 928.00 463.00 163.50 120.50 1.00 2.00 113.50 684.50 909.50 1092.00 6725.50
1970 1155.50 811.00 879.00 689.00 270.50 121.00 0.50 0.00 229.50 677.50 839.50 1174.50 6847.50
1971 1292.00 961.00 885.50 560.50 358.50 85.00 0.00 1.03 a 283.00 545.00 920.00 1384.50 7276.03
1972 1267.50 893.50 674.50 513.50 298.50 18.50 2.00 16.00 156.00 468.00 944.00 1495.00 6747.00
1973 1578.50 1081.00 825.50 651.50 315.50 0.00 z 9.50 4.50 207.00 467.50 0.00 z 1262.50 6403.00
1974 1497.50 1228.50 730.50 600.00 220.00 87.50 0.00 16.02 a 196.00 445.50 856.50 1369.50 7247.52
1975 1453.00 1113.50 872.50 688.50 423.00 146.50 0.00 25.50 204.00 562.50 979.00 1263.50 7731.50
1976 1442.00 921.50 952.50 555.50 312.50 110.00 0.00 15.00 165.00 598.50 903.50 1254.00 7230.00
1977 1368.50 929.00 922.50 438.50 270.50 4.00 0.00 12.00 131.50 459.50 846.00 1072.00 6454.00
1978 1153.00 927.00 682.00 473.50 335.00 53.50 1.00 26.50 180.50 448.50 793.00 1537.50 6611.00
1979 1552.50 1139.00 838.00 540.00 302.50 109.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1230.50 5711.50
1980 0.00 z 0.00 z 0.00 z 561.00 334.50 53.00 0.00 z 30.00 145.00 0.00 z 844.00 919.00 2886.50
1981 1058.00 916.50 779.00 425.00 307.00 51.50 0.00 11.50 44.00 517.00 769.00 1177.50 6056.00
1982 1350.00 1064.50 776.50 592.50 334.50 104.50 9.50 3.50 142.50 604.50 879.50 1137.00 6999.00
1983 1087.50 839.00 748.00 675.50 402.50 111.00 5.50 0.00 86.50 438.00 842.50 1264.50 6500.50
1984 1453.50 1107.50 831.50 646.00 204.50 116.50 0.00 2.00 132.50 630.00 0.00 z 1140.00 6264.00
1985 1253.50 1132.00 815.00 476.50 232.50 63.00 0.00 6.50 239.50 486.50 890.00 1153.50 6748.50
1986 1088.00 778.50 612.50 482.50 292.50 19.00 1.50 3.50 220.00 506.50 803.00 1091.00 5898.50
1987 1223.00 847.50 832.50 440.00 258.00 28.00 9.50 27.50 131.50 399.50 831.50 1217.00 6245.50
1988 1433.50 1046.00 870.50 469.00 275.00 15.00 0.00 0.00 202.00 336.00 835.50 1209.00 6691.50
1989 1447.50 1054.50 682.50 388.50 227.50 73.50 0.00 2.50 108.50 479.50 36.50 z 1144.50 5609.00
1990 0.00 z 917.50 664.50 399.00 287.00 38.00 0.00 4.00 75.00 484.50 831.00 1438.50 5139.00
1991 1481.00 959.00 800.00 613.00 272.00 55.00 2.00 2.00 150.50 480.00 905.50 1194.00 6914.00
1992 1291.00 812.00 657.00 356.00 149.00 59.00 12.50 33.00 119.50 384.00 980.00 1247.50 6100.50
1993 1123.50 907.00 721.00 544.00 245.00 72.00 0.00 z 4.50 188.00 481.00 981.00 1179.00 6446.00
1994 1126.50 930.00 666.00 479.00 200.98 a 0.00 o 3.50 0.00 98.50 503.50 924.00 720.50 l 4931.98
1995 1087.00 703.50 721.50 541.00 294.00 j 76.50 j 39.50 0.00 162.00 547.00 769.50 1014.00 5585.00
1996 1236.00 903.00 778.00 365.00 j 228.50 46.67 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3192.17
1997 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 224.50 m 836.00 1180.00 2016.00
1998 1038.50 829.50 766.50 550.00 160.00 j 111.00 0.00 0.00 44.00 413.50 749.50 1265.50 5768.00
1999 1062.30 c 838.92 b 613.05 b 557.50 295.00 i 66.60 e 0.00 h 2.21 c 148.20 e 398.57 c 685.96 d 1142.72 b 5516.05
2000 1072.71 b 813.16 d 747.88 c 394.66 a 158.21 b 16.80 e 0.00 d 0.00 c 110.89 b 394.73 a 1069.04 d 921.00 g 4778.07
2001 1201.50 896.00 543.00 f 437.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2534.50
2002 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 298.00 m 891.00 1112.00 2003.00
2003 1021.00 943.48 e 714.00 465.00 c 215.00 10.00 0.00 0.00 f 104.00 219.00 f 672.50 f 1044.50 4516.98
2004 1198.00 954.00 518.50 363.50 125.00 i 8.00 k 0.00 5.00 j 34.00 o 0.00 z 0.00 z 0.00 z 3034.00
2005 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
2006 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
2007 1378.00 890.00 725.00 507.00 253.50 68.50 0.00 0.50 127.50 b 408.50 g 808.50 0.00 z 4758.50
2008 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
2009 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
2010 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
2011 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
2012 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 465.57 d 717.50 1191.00 2374.07
2013 1475.00 1051.50 765.00 31.00 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 3291.50
Period of Record Statistics
MEAN 1301.31 983.76 807.65 516.48 272.68 72.35 3.42 11.22 154.70 491.05 858.12 1211.89 6780.33
S.D. 155.86 140.18 102.97 89.39 71.49 38.99 6.90 12.50 55.72 74.61 91.19 130.26 428.54
SKEW 0.14 0.57 0.11 0.08 -0.03 0.33 2.96 1.42 0.63 0.37 0.10 0.30 -0.47
MAX 1722.50 1427.48 1066.50 708.50 448.00 179.50 39.50 57.50 334.00 684.50 1076.00 1537.50 7731.50
MIN 1021.00 703.50 518.50 334.00 82.00 4.00 0.00 0.00 44.00 336.00 679.00 919.00 5515.50
NO YRS 87 88 88 88 85 84 82 83 84 80 84 84 58