CHACO CANYON NATL MON, NEW MEXICO

Monthly Total Heating Degree Days

(291647)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1922 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 23.28 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 23.28
1923 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
1924 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1925 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
1926 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
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 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
1930 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
1931 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
1932 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
1933 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
1934 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
1935 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
1936 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
1937 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
1938 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
1939 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
1940 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
1941 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
1942 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
1943 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
1944 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
1945 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
1946 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
1947 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
1948 1086.15 d 901.50 893.50 387.00 178.50 28.00 0.00 4.50 44.00 365.36 c 905.50 571.50 l 4794.01
1949 869.50 g 977.50 729.03 b 369.23 d 256.00 48.50 0.00 0.00 15.00 466.50 685.50 1090.00 4637.27
1950 1051.00 764.30 a 717.77 e 390.00 264.02 a 37.24 a 0.00 0.00 106.50 171.57 b 705.52 a 685.50 i 4207.91
1951 737.50 j 884.00 810.17 e 475.50 233.02 a 73.00 0.00 1.50 60.00 b 345.00 f 659.50 h 909.50 g 2537.19
1952 987.72 b 936.92 c 913.43 b 481.50 201.00 20.50 0.00 a 0.00 b 82.22 c 282.50 f 909.00 973.50 g 4532.30
1953 973.50 690.50 g 700.27 c 529.62 d 379.20 c 6.35 d 0.00 0.00 c 35.50 f 311.50 g 750.00 a 1209.00 4547.93
1954 983.98 b 772.00 859.98 b 324.23 d 160.68 a 47.68 b 0.00 2.00 77.07 a 212.50 h 585.00 f 1105.00 4332.63
1955 1140.80 a 982.92 d 639.50 g 453.00 h 330.84 b 65.00 g 0.00 0.00 a 86.25 b 382.69 b 695.50 f 1021.40 b 3944.90
1956 876.27 a 692.50 l 858.24 d 381.50 k 234.88 e 7.22 c 1.03 a 10.16 b 43.89 c 411.55 b 1001.50 1211.21 c 4655.96
1957 991.48 a 688.50 760.57 b 571.80 e 353.73 c 35.00 h 7.00 7.23 a 117.32 b 450.10 e 913.00 1040.00 5900.74
1958 1154.23 a 746.67 d 857.67 d 454.00 f 163.04 d 6.50 j 0.00 d 0.00 d 105.58 d 319.00 g 851.79 b 983.22 a 4862.18
1959 1090.96 e 870.24 c 678.50 f 477.50 260.63 d 13.89 c 0.50 l 0.00 s 124.80 e 474.09 b 857.50 1066.92 a 5236.52
1960 1266.50 697.50 j 150.50 v 447.50 269.00 24.00 0.00 t 0.00 i 66.50 484.00 747.00 1237.00 4541.50
1961 1255.00 839.00 765.50 327.00 j 244.50 33.50 0.50 7.00 211.50 560.00 871.50 1415.00 6203.00
1962 1424.50 888.00 0.00 z 420.50 337.00 81.00 2.50 15.50 103.00 434.00 729.50 1114.50 5550.00
1963 1451.12 b 915.92 b 818.50 561.00 201.50 75.50 0.00 5.50 39.50 348.00 795.00 1264.00 6475.54
1964 1295.28 a 1184.00 963.50 667.50 285.50 67.22 c 0.00 c 27.50 155.50 478.00 928.00 1111.50 7163.51
1965 1118.00 1005.00 914.00 0.00 z 373.00 140.50 0.00 20.00 229.50 489.00 697.00 1025.50 6011.50
1966 1230.50 1051.00 783.00 511.00 178.00 35.89 b 0.00 6.20 a 83.50 458.00 738.50 1194.50 6270.09
1967 1284.50 875.50 624.00 507.93 a 341.50 70.34 a 0.00 2.50 48.50 k 437.50 705.00 1329.50 6178.28
1968 1242.50 832.50 823.50 642.50 359.00 71.00 6.50 29.00 f 174.00 477.00 920.50 1338.00 6887.00
1969 1064.50 916.50 930.50 501.50 219.00 57.50 1.00 0.00 71.50 512.50 875.00 1024.50 6174.00
1970 1157.00 816.50 911.50 688.50 269.50 101.00 0.00 z 0.00 162.50 597.50 797.00 1090.50 6591.50
1971 1217.00 934.00 807.00 595.00 373.00 79.00 0.00 0.00 174.00 525.00 835.00 1156.50 6695.50
1972 1111.00 911.00 678.50 527.00 285.50 15.00 0.00 6.50 89.00 378.00 892.50 1176.00 6070.00
1973 1294.00 888.50 849.00 672.50 332.50 0.00 z 0.00 z 5.50 138.50 472.50 727.00 0.00 z 5380.00
1974 1211.07 a 1004.00 630.16 b 599.50 147.00 26.67 c 1.55 a 3.10 a 181.03 a 398.00 818.50 1247.50 6268.07
1975 1271.00 916.50 797.50 638.57 b 369.93 a 87.41 a 1.50 17.57 a 156.21 a 503.75 a 870.00 1146.50 6776.44
1976 1234.50 811.00 876.30 c 507.32 b 220.62 a 38.28 a 0.00 0.00 125.50 575.00 952.50 b 1331.97 a 6672.98
1977 1359.35 a 934.00 842.17 a 490.50 333.77 a 15.50 0.00 a 2.50 86.25 b 388.02 a 768.00 952.98 b 6173.03
1978 939.82 a 820.30 a 673.00 497.07 a 309.48 a 33.50 0.00 6.72 a 122.59 a 409.20 a 723.62 a 1312.69 b 5847.98
1979 1254.50 927.00 780.50 545.00 305.00 83.28 a 3.62 a 38.20 c 72.00 377.00 960.54 b 1072.60 a 6419.22
1980 1024.66 c 923.54 c 839.00 549.00 e 336.87 a 46.50 0.00 c 0.00 z 82.00 523.68 c 806.54 d 937.75 c 6069.53
1981 1043.31 b 0.00 z 814.27 a 408.00 260.29 b 45.00 e 0.00 e 0.00 k 61.11 c 470.00 727.76 a 1011.78 b 4841.52
1982 1141.50 963.50 755.50 497.50 210.00 k 64.00 0.50 12.83 b 84.00 517.00 804.50 991.00 5831.83
1983 1053.00 827.00 784.50 668.50 358.50 119.50 8.00 0.00 k 85.00 412.00 804.50 1057.50 6178.00
1984 1262.00 956.50 827.00 623.50 164.00 51.00 0.00 0.00 71.50 578.50 806.00 993.50 6333.50
1985 1095.50 903.50 700.50 471.50 221.50 40.50 0.00 1.50 197.50 428.50 756.50 1140.50 5957.50
1986 966.50 785.00 676.00 438.50 244.00 40.00 0.00 0.00 161.00 504.00 792.00 1026.00 5633.00
1987 1290.00 904.50 872.50 488.50 231.50 22.50 0.00 14.98 a 142.50 399.50 822.00 1171.50 6359.98
1988 1262.50 867.50 794.50 505.86 a 267.50 33.50 0.00 2.50 148.00 368.00 789.00 1155.00 6193.86
1989 1281.50 870.50 608.00 388.50 189.50 24.50 0.00 6.50 104.50 466.50 866.50 1078.00 5884.50
1990 1260.00 970.50 709.00 407.50 227.50 25.50 0.00 4.00 52.50 484.50 782.50 1427.50 6351.00
1991 1291.00 820.50 817.50 531.00 283.00 62.50 0.00 0.00 114.00 418.50 842.50 1082.00 6262.50
1992 1188.50 846.00 740.00 396.50 225.50 68.00 7.50 32.00 97.50 380.00 1004.50 1297.00 6283.00
1993 936.00 811.50 771.50 515.00 238.00 77.50 0.00 8.00 150.00 517.00 922.00 1144.00 6090.50
1994 1185.50 929.00 495.00 i 469.00 250.00 9.50 0.00 0.00 99.00 479.50 866.00 1004.50 5292.00
1995 1030.75 a 721.50 701.00 557.50 341.00 91.50 8.50 0.00 94.50 485.50 752.00 398.50 p 4783.75
1996 1053.50 782.00 775.50 461.50 101.00 22.50 0.00 0.00 176.00 475.00 798.00 1015.00 5660.00
1997 1224.00 858.00 686.00 575.00 178.00 51.00 0.00 0.50 47.50 512.50 816.50 1180.00 6129.00
1998 1012.50 898.50 773.50 604.50 247.00 85.50 0.00 0.00 42.00 415.50 744.50 1074.00 5897.50
1999 969.00 841.00 628.00 564.00 304.50 69.50 0.00 0.50 144.00 474.50 736.50 1180.00 5911.50
2000 1034.88 a 759.00 740.50 388.00 174.00 2.50 0.00 7.00 74.00 447.00 983.50 1086.60 b 5696.99
2001 1187.00 848.00 742.00 467.00 197.88 a 31.50 0.00 1.00 65.50 397.50 738.10 a 1211.87 d 5887.36
2002 1125.00 964.50 823.00 374.00 229.00 7.00 0.00 1.00 85.00 505.00 816.50 1086.00 6016.00
2003 974.00 879.00 760.50 507.41 a 227.50 24.50 0.00 0.00 101.50 321.00 782.50 1030.23 a 5608.15
2004 1079.50 993.00 615.50 502.50 218.50 24.50 2.50 4.50 148.50 470.50 858.50 1151.50 6069.50
2005 918.50 774.50 765.18 a 0.00 z 497.03 a 78.50 0.00 0.00 58.50 413.00 775.50 1145.50 5426.22
2006 1070.50 891.50 747.62 a 422.07 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3131.69
Period of Record Statistics
MEAN 1139.97 883.35 778.46 505.82 262.86 48.37 0.97 5.41 107.00 450.72 820.47 1133.58 6168.76
S.D. 134.22 87.84 85.65 87.75 74.28 30.50 2.24 8.40 47.93 72.48 81.68 116.73 354.39
SKEW 0.11 0.47 -0.08 0.20 0.47 0.70 2.43 2.24 0.50 -0.90 0.46 0.64 0.65
MAX 1451.12 1184.00 963.50 688.50 497.03 140.50 8.50 38.20 229.50 597.50 1004.50 1427.50 7163.51
MIN 876.27 688.50 608.00 324.23 101.00 2.50 0.00 0.00 15.00 171.57 685.50 937.75 5608.15
NO YRS 57 55 54 53 57 55 54 53 56 53 55 52 31