DUNCAN, ARIZONA

Monthly Total Heating Degree Days

(022754)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1901 0.00 z 0.00 z 0.00 z 0.00 z 20.50 t 7.50 0.00 0.00 5.50 148.00 418.00 728.50 1307.50
1902 713.57 d 578.50 554.00 214.50 63.00 4.00 0.52 a 0.00 12.50 145.50 481.00 693.00 3460.09
1903 722.50 688.50 489.50 236.50 104.50 6.00 0.00 0.00 10.50 270.50 472.50 0.00 z 3001.00
1904 905.00 544.00 365.00 0.00 z 72.00 4.04 d 0.00 z 0.00 a 7.50 b 182.00 504.00 726.50 3310.04
1905 674.25 c 517.00 444.50 297.50 121.00 0.00 0.00 0.00 8.00 151.50 470.00 892.50 3576.25
1906 809.58 e 504.00 422.00 224.00 89.50 3.00 0.52 a 0.00 0.00 205.50 0.00 z 0.00 z 2258.09
1907 0.00 z 0.00 z 297.00 209.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 506.50
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1912 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
1913 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
1914 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
1915 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
1916 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
1917 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
1918 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
1919 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
1920 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
1921 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
1922 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
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 z 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 55.00 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 0.00 z 0.00 z 0.00 z 142.50 d 38.00 0.00 0.00 0.00 4.00 161.00 663.00 712.00 1720.50
1949 905.64 c 621.00 448.00 239.50 90.00 15.50 0.00 1.00 1.50 0.00 z 421.50 749.00 3492.64
1950 736.50 515.00 435.00 163.00 104.50 0.00 0.00 0.00 5.00 48.50 451.50 661.50 3120.50
1951 786.76 b 575.00 506.00 266.00 72.00 5.00 0.00 0.00 0.00 103.00 504.50 715.00 3533.26
1952 671.50 689.00 609.00 222.50 26.50 0.00 0.00 0.00 1.50 140.50 601.00 815.50 3777.00
1953 696.00 630.50 407.50 237.00 178.50 1.00 0.00 0.00 1.00 184.50 472.50 887.50 3696.00
1954 712.50 467.00 417.50 88.50 26.50 0.50 0.00 0.00 0.00 115.00 444.50 746.00 3018.00
1955 785.00 694.81 a 418.50 249.00 71.00 5.50 0.00 0.00 1.50 117.50 488.50 637.50 3468.81
1956 652.50 724.00 437.50 238.00 27.00 0.00 0.00 0.00 0.00 171.50 642.86 b 771.38 a 3664.74
1957 595.00 324.50 410.50 246.50 90.50 0.00 0.00 0.00 17.50 192.50 607.00 687.50 3171.50
1958 789.50 465.00 523.50 222.00 25.50 0.00 0.00 0.00 2.50 142.50 491.00 709.50 3371.00
1959 679.50 570.00 489.00 138.00 62.50 0.00 0.00 0.00 12.00 159.50 512.50 657.50 3280.50
1960 850.50 707.00 362.00 203.00 80.00 0.00 0.00 0.00 0.00 176.00 443.50 798.00 3620.00
1961 744.50 573.50 420.50 232.00 49.50 0.50 0.00 0.00 5.00 221.50 558.50 703.00 3508.50
1962 798.00 473.67 d 582.50 125.50 74.50 1.00 0.50 0.00 2.00 145.50 422.50 670.00 3295.67
1963 846.50 511.00 450.50 230.00 14.00 2.50 0.00 0.00 0.00 97.50 469.00 825.00 3446.00
1964 938.50 801.00 547.00 270.50 73.50 0.00 0.00 0.00 10.50 139.50 543.00 736.00 4059.50
1965 662.50 599.00 489.50 217.00 88.50 6.50 0.00 0.00 27.00 178.00 384.50 677.50 3330.00
1966 824.08 a 687.00 424.50 186.00 17.50 0.50 0.00 0.00 a 1.50 216.00 425.00 786.50 3568.58
1967 829.00 515.00 333.00 235.00 94.50 0.50 0.00 0.00 6.00 186.00 a 440.17 a 822.00 3461.17
1968 740.90 a 458.50 426.00 267.50 52.00 6.00 0.00 0.00 a 11.00 162.00 498.00 832.50 3454.40
1969 608.50 579.00 523.50 159.00 55.00 0.00 0.00 0.00 0.00 188.00 512.00 665.98 a 3290.98
1970 788.00 526.00 478.00 330.50 53.50 0.00 0.00 0.00 38.50 317.00 518.00 703.00 3752.50
1971 216.50 s 562.00 446.50 236.50 68.50 4.00 j 0.00 e 0.00 18.50 225.00 f 471.50 776.50 2580.00
1972 725.29 b 582.00 267.50 223.00 47.00 0.00 0.00 c 0.00 a 5.00 144.50 604.00 753.50 3351.79
1973 802.00 582.00 535.00 353.00 57.50 1.50 0.00 g 0.00 0.00 z 207.24 d 508.00 806.50 3852.74
1974 693.00 693.00 373.00 255.00 31.52 a 0.00 a 0.00 0.00 3.50 141.00 508.00 808.50 3506.52
1975 764.00 593.50 483.50 380.00 123.00 2.00 0.00 0.00 g 21.00 209.00 584.50 774.00 3934.50
1976 854.50 540.50 549.00 276.00 61.00 2.00 0.00 0.00 8.00 j 257.00 562.00 841.50 3943.50
1977 739.50 576.00 600.00 229.50 84.50 0.00 0.00 b 0.00 0.00 118.00 456.00 634.98 a 3438.48
1978 653.50 552.50 351.00 39.50 y 28.00 i 0.00 0.00 0.00 0.00 127.00 444.50 825.50 2954.00
1979 805.00 604.50 534.00 302.50 110.50 2.00 0.00 0.00 4.50 144.00 628.00 747.00 3882.00
1980 660.50 519.00 485.50 255.50 94.50 1.50 0.00 0.00 h 0.00 274.50 542.50 651.50 3485.00
1981 632.50 507.00 459.00 132.50 15.50 0.00 0.00 0.00 0.00 160.00 461.00 691.50 3059.00
1982 695.50 510.50 445.50 222.00 65.50 0.00 0.00 0.00 8.00 238.00 509.50 737.50 3432.00
1983 725.00 549.50 460.00 413.00 133.00 1.50 0.00 0.00 7.00 90.00 486.50 711.00 3576.50
1984 727.00 682.00 487.00 323.50 28.50 0.00 0.00 0.00 4.00 232.50 530.00 652.00 3666.50
1985 796.00 617.50 422.50 186.00 30.00 5.50 0.00 0.00 28.50 167.00 498.50 703.00 3454.50
1986 644.50 479.50 356.00 163.00 56.50 0.00 0.00 0.00 26.50 182.50 476.00 721.50 3106.00
1987 784.00 607.50 535.00 198.50 50.50 0.00 0.00 0.00 1.00 46.00 514.00 779.50 3516.00
1988 754.50 536.50 496.50 245.50 79.00 0.00 0.00 0.00 14.00 42.50 479.50 792.00 3440.00
1989 747.00 471.00 334.50 99.00 37.00 0.00 0.00 0.00 1.00 152.50 481.00 828.00 3151.00
1990 61.50 z 300.50 l 359.00 105.50 37.50 0.00 0.00 0.00 0.00 159.50 432.50 810.50 1904.50
1991 696.00 469.00 511.50 252.00 65.50 13.50 0.00 0.00 5.00 133.00 531.00 667.00 3343.50
1992 775.00 510.00 400.50 164.00 22.50 0.00 0.00 0.00 2.00 97.00 625.00 734.50 3330.50
1993 562.00 529.00 390.00 218.50 25.00 5.50 0.00 0.00 6.00 170.00 533.50 740.00 3179.50
1994 748.50 551.50 348.50 203.00 40.50 0.00 0.00 0.00 0.00 151.50 487.50 612.50 3143.50
1995 675.50 410.00 403.50 306.50 72.00 0.00 0.00 0.00 0.00 101.00 345.00 665.00 2978.50
1996 699.50 371.00 431.00 176.50 8.00 0.00 0.00 0.00 3.00 191.00 429.50 711.50 3021.00
1997 679.50 551.00 355.00 231.50 3.50 0.00 0.00 0.00 0.00 222.50 441.00 773.50 3257.50
1998 698.00 592.00 451.00 312.00 64.50 0.00 0.00 0.00 0.00 112.50 427.50 676.50 3334.00
1999 661.50 504.50 333.50 246.50 33.50 2.50 0.00 0.00 i 0.00 136.50 370.50 760.50 3049.50
2000 637.50 466.07 a 388.00 92.50 5.00 0.00 0.00 0.00 1.00 158.00 589.50 698.00 3035.57
2001 740.50 558.50 419.50 184.00 21.50 0.00 0.00 0.00 0.00 56.50 353.00 759.00 3092.50
2002 730.00 546.00 452.00 62.50 30.00 0.00 0.00 0.00 0.00 138.50 458.00 705.00 3122.00
2003 562.50 502.50 431.50 207.00 35.00 0.00 0.00 0.00 0.00 33.50 423.00 739.00 2934.00
2004 633.50 617.00 244.50 191.00 13.00 0.00 0.00 0.00 4.50 140.50 494.50 743.00 3081.50
2005 579.50 477.00 420.00 190.00 37.50 0.00 z 0.00 0.00 0.00 104.00 0.00 z 692.00 2500.00
2006 683.50 489.50 399.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 764.00 2336.00
2007 790.50 507.00 338.00 140.00 9.50 0.00 0.00 0.00 0.00 z 114.00 337.50 724.00 2960.50
2008 737.50 516.50 0.00 z 206.50 34.00 0.00 0.00 0.00 0.00 121.00 424.50 664.00 2704.00
2009 636.50 493.50 326.50 0.00 z 0.50 0.00 0.00 0.00 0.50 0.00 z 0.00 z 0.00 z 1457.50
2010 722.50 541.00 452.00 179.50 73.00 0.00 0.00 0.00 0.00 98.50 538.00 629.00 3233.50
2011 772.00 623.00 330.50 86.38 a 62.50 0.00 0.00 0.00 d 0.00 103.50 479.00 0.00 z 2456.88
2012 664.00 543.00 398.00 132.50 11.00 0.00 a 0.00 0.00 0.50 149.50 373.50 686.50 2958.50
2013 809.50 805.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1614.50
Period of Record Statistics
MEAN 728.89 557.65 433.55 216.01 55.79 1.57 0.02 0.01 5.33 153.60 488.04 734.33 3363.74
S.D. 80.67 88.21 77.23 69.74 35.32 3.03 0.11 0.12 8.08 55.67 71.08 63.35 253.51
SKEW 0.22 0.48 0.03 0.20 0.78 2.69 4.44 8.00 2.14 0.31 0.28 0.36 0.36
MAX 938.50 805.00 609.00 413.00 178.50 15.50 0.52 1.00 38.50 317.00 663.00 892.50 4059.50
MIN 562.00 324.50 244.50 62.50 0.50 0.00 0.00 0.00 0.00 33.50 337.50 612.50 2934.00
NO YRS 68 69 69 67 68 68 68 67 67 67 67 67 51