WILLCOX, ARIZONA

Monthly Total Heating Degree Days

(029334)

Base Temperature = 65 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
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 196.00 r 250.50 0.00 z 88.50 0.00 a 0.00 0.00 a 244.00 426.50 800.00 1809.50
1904 865.50 501.00 373.50 164.00 65.50 1.00 0.00 0.00 17.00 203.00 559.50 716.50 3466.50
1905 636.50 517.00 428.50 284.50 82.50 0.00 0.00 0.00 4.00 180.00 421.00 778.50 3332.50
1906 762.00 493.00 427.50 215.50 60.50 4.00 0.00 0.00 3.50 245.00 441.50 575.00 3227.50
1907 670.00 423.50 239.50 196.50 159.00 0.00 0.00 0.00 8.50 154.50 0.00 z 711.00 2562.50
1908 698.50 608.00 349.50 246.00 113.50 11.50 0.00 0.00 9.00 330.50 0.00 z 704.00 3070.50
1909 580.00 579.00 535.00 282.00 101.50 0.00 0.00 0.00 1.00 171.00 435.50 0.00 z 2685.00
1910 0.00 z 606.00 340.50 216.00 47.00 0.00 0.00 1.50 0.00 123.00 397.00 614.50 2345.50
1911 517.00 0.00 z 0.00 z 274.50 90.00 0.00 z 0.00 z 0.00 0.00 204.00 561.00 942.00 2588.50
1912 775.00 666.00 493.00 408.50 137.00 0.00 0.00 0.00 2.50 197.00 427.50 821.00 3927.50
1913 877.00 607.50 517.50 353.00 53.50 0.00 1.50 0.00 23.00 183.00 401.00 768.00 3785.00
1914 619.00 547.00 376.50 166.50 58.90 a 0.00 0.00 0.00 0.00 67.00 295.00 671.50 2801.40
1915 709.50 528.50 471.00 208.50 110.50 0.00 0.00 0.00 0.50 64.50 357.50 512.00 2962.50
1916 554.50 441.50 298.00 160.50 26.50 0.00 0.00 0.00 0.00 85.50 434.48 a 682.00 2682.98
1917 776.00 632.00 601.00 343.00 211.00 28.00 0.00 0.00 16.50 220.50 493.50 731.50 4053.00
1918 842.50 545.00 442.00 290.00 161.50 10.50 0.00 0.00 17.07 a 179.00 557.50 808.50 3853.57
1919 838.00 691.00 563.00 278.79 a 88.00 25.00 0.00 0.00 37.50 323.50 549.50 675.00 4069.29
1920 726.50 541.50 542.50 457.00 136.00 2.00 0.00 k 2.00 27.50 259.00 518.00 342.00 q 3212.00
1921 713.50 575.00 387.50 334.00 93.50 9.00 0.00 0.00 a 0.00 159.00 497.00 618.34 c 3386.84
1922 797.00 558.96 a 662.50 218.50 k 117.80 a 0.00 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2136.26
1923 352.00 k 635.50 578.50 270.50 46.00 16.50 0.00 0.00 33.00 301.00 517.00 822.50 3220.50
1924 828.22 a 612.00 638.17 b 358.00 58.50 6.50 0.00 0.00 3.00 194.61 d 317.50 i 699.00 3398.00
1925 817.50 470.30 a 410.00 214.50 39.00 8.50 0.00 0.50 5.50 187.50 536.50 788.00 3477.80
1926 826.00 544.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1370.50
1927 0.00 z 0.00 z 540.00 340.50 107.00 40.00 0.00 0.00 a 26.00 233.50 403.00 789.50 2479.50
1928 734.50 636.00 425.00 341.00 85.50 19.00 0.00 1.00 3.00 j 176.00 521.50 794.00 3733.50
1929 861.00 683.00 581.50 371.00 119.00 7.00 0.00 2.07 a 7.50 231.50 705.00 742.00 4310.57
1930 768.00 544.83 d 573.00 240.50 264.00 17.50 0.00 0.00 74.00 322.00 435.50 i 840.00 3643.83
1931 858.50 569.00 525.00 276.50 100.00 6.00 0.50 h 0.00 9.00 189.50 530.36 b 779.59 d 3843.45
1932 908.00 497.50 538.00 320.50 142.00 40.00 0.00 0.00 8.50 227.00 481.00 783.00 3945.50
1933 793.50 718.50 479.00 387.00 235.00 5.00 0.00 0.00 0.00 115.50 447.50 686.50 3867.50
1934 754.00 469.00 359.00 161.67 c 12.73 c 14.00 0.00 1.50 54.00 186.00 480.00 a 645.50 3137.40
1935 652.50 565.50 505.00 261.00 200.50 10.00 0.00 0.00 a 16.50 185.50 549.00 694.50 3640.00
1936 769.50 548.50 449.50 213.00 48.00 13.50 0.00 0.00 25.50 222.00 480.00 705.50 3475.00
1937 918.50 613.00 553.00 305.50 77.00 4.14 a 0.00 a 0.00 h 0.00 113.67 d 222.00 n 349.50 m 2584.80
1938 679.00 0.00 z 472.50 273.00 124.00 0.00 0.00 0.00 2.50 128.50 f 578.04 b 556.00 g 2129.04
1939 765.50 795.00 445.00 220.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 57.00 v 427.00 542.50 b 3195.50
1940 665.50 540.00 371.00 217.76 a 22.00 0.00 0.00 b 0.00 0.00 73.00 0.00 z 526.48 a 2415.74
1941 640.15 a 419.48 a 419.53 a 313.00 74.92 a 8.00 0.00 0.00 17.00 g 172.50 448.85 d 708.83 e 3205.25
1942 651.00 588.00 a 531.00 165.00 j 0.00 z 0.00 0.00 0.00 0.00 e 175.67 a 305.00 h 644.50 2590.17
1943 684.00 453.70 a 380.78 a 150.00 51.00 0.00 e 0.00 0.00 3.50 175.00 485.77 d 718.17 d 3101.92
1944 822.50 621.50 509.95 a 319.44 c 60.97 a 0.00 0.00 a 0.00 7.00 94.00 506.00 551.00 h 2941.36
1945 713.50 554.50 407.00 k 308.89 c 53.14 c 10.00 0.00 i 0.00 a 34.50 108.50 a 497.00 731.50 3011.53
1946 775.52 a 621.50 445.00 99.00 48.50 0.00 0.00 0.00 2.00 194.00 548.50 554.50 f 2734.02
1947 839.50 488.88 c 427.91 c 248.08 d 24.05 b 0.00 c 0.00 a 0.00 0.00 c 120.12 c 566.79 b 808.50 3523.83
1948 747.21 b 621.00 591.98 e 95.00 h 42.48 d 0.00 0.00 0.00 b 0.00 b 143.50 637.00 698.00 3481.17
1949 847.50 608.00 414.50 197.50 59.50 1.50 0.00 0.00 0.00 235.00 368.00 724.00 3455.50
1950 689.50 459.50 401.00 145.50 76.00 g 0.00 0.00 0.00 2.00 28.00 380.50 607.50 2713.50
1951 749.00 556.00 466.50 228.00 82.50 5.00 0.00 0.00 1.50 91.00 452.00 675.00 3306.50
1952 611.50 644.50 605.50 207.00 24.00 6.50 0.00 0.00 0.00 67.00 527.00 757.00 3450.00
1953 631.00 619.92 c 402.50 255.54 b 173.37 d 2.88 d 0.00 a 0.00 h 0.00 183.13 d 423.10 a 850.90 b 3542.34
1954 675.28 a 410.87 e 436.50 78.00 g 28.50 k 0.00 0.00 0.00 a 0.00 86.05 b 418.97 a 708.87 a 2736.54
1955 819.50 716.00 435.00 283.50 76.00 8.50 0.00 a 0.00 b 0.00 d 86.00 478.89 c 597.61 d 3501.00
1956 639.78 b 719.09 b 460.00 262.00 29.50 0.00 0.00 0.00 a 0.00 a 156.50 585.00 a 736.00 3587.87
1957 574.50 322.00 d 415.52 e 245.69 a 97.02 d 0.00 0.00 0.00 6.00 187.50 570.00 b 657.95 b 3076.18
1958 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1959 653.67 b 592.67 d 455.70 a 133.93 b 68.00 0.50 0.00 0.00 7.50 168.50 503.50 705.00 3288.97
1960 811.50 699.00 363.50 222.00 68.50 0.00 0.00 l 0.00 6.50 208.50 473.00 775.50 3628.00
1961 696.00 582.00 471.50 250.50 68.72 a 9.50 0.00 0.00 8.50 230.50 580.50 688.00 3585.72
1962 785.00 498.00 627.50 157.00 110.00 11.90 a 0.00 0.00 6.50 152.50 450.00 645.50 3443.90
1963 785.50 506.00 478.00 306.00 45.50 11.50 0.00 0.00 0.00 104.00 471.00 762.50 3470.00
1964 872.00 812.00 607.50 340.00 124.00 3.50 0.00 0.00 18.50 133.00 561.00 711.50 4183.00
1965 642.50 628.00 535.50 271.00 147.50 23.50 0.00 0.00 44.50 180.50 367.00 664.50 3504.50
1966 807.00 706.00 448.00 240.00 a 56.32 a 5.00 0.00 0.00 0.50 240.00 425.00 782.00 3709.82
1967 803.50 564.50 385.50 316.50 141.00 14.50 0.00 0.00 2.00 203.00 464.50 807.50 3702.50
1968 732.50 454.00 481.50 336.50 118.00 11.50 0.00 0.00 13.00 175.50 513.50 835.00 3671.00
1969 601.00 605.50 618.00 264.50 87.00 0.00 0.00 0.00 0.00 226.00 500.17 a 688.00 3590.17
1970 781.00 554.50 547.50 424.00 69.50 0.00 0.00 0.00 42.50 349.00 532.00 677.83 e 3977.83
1971 806.50 658.00 550.85 e 341.00 h 217.00 32.00 0.00 j 0.00 k 18.50 f 232.50 461.00 745.50 3703.35
1972 671.50 548.00 255.00 213.00 46.50 0.00 0.00 0.00 2.00 153.00 576.50 474.00 j 2465.50
1973 765.50 540.50 564.00 332.00 52.00 1.50 0.00 c 0.00 2.50 125.50 448.00 695.50 3527.00
1974 639.50 608.22 a 338.23 c 198.00 25.00 0.00 0.00 0.00 12.50 162.00 466.00 755.50 3204.95
1975 705.00 575.50 495.00 360.00 103.00 1.00 0.00 0.00 6.50 165.00 465.50 655.50 3532.00
1976 707.00 466.50 438.00 212.50 33.00 0.00 0.00 0.00 2.50 236.00 502.50 730.50 3328.50
1977 682.50 473.00 507.50 194.50 55.50 2.00 0.00 0.00 0.00 84.50 387.00 526.50 2913.00
1978 590.50 513.50 318.00 208.00 61.00 0.00 0.00 a 0.00 1.00 97.50 390.50 767.50 2947.50
1979 728.50 510.00 439.00 191.50 68.00 3.00 0.00 0.00 10.50 104.00 550.00 617.00 3221.50
1980 578.50 457.00 437.00 220.50 52.00 1.00 0.00 0.00 0.00 221.50 474.00 526.50 2968.00
1981 599.50 449.00 416.00 99.00 16.00 0.00 0.00 0.00 0.00 141.00 382.00 580.50 2683.00
1982 616.50 453.50 380.00 158.50 55.00 0.00 0.00 0.00 4.50 195.50 461.50 716.00 3041.00
1983 651.50 490.50 441.00 332.50 87.00 0.00 0.00 0.00 6.00 92.00 425.50 608.00 3134.00
1984 620.50 574.00 384.50 229.00 10.50 0.00 0.00 0.00 0.00 185.50 458.00 596.00 3058.00
1985 685.00 539.50 354.50 131.00 22.00 1.00 0.00 0.00 22.00 133.00 434.50 671.50 2994.00
1986 572.50 427.00 303.50 126.50 41.50 0.00 0.00 0.00 21.50 178.00 447.50 675.00 2793.00
1987 702.00 550.50 490.50 154.50 42.00 0.00 0.00 0.00 0.00 33.50 466.50 718.50 3158.00
1988 683.50 480.50 414.50 193.00 62.50 0.50 0.00 0.00 3.50 37.00 426.00 708.50 3009.50
1989 689.50 418.00 255.00 70.50 38.00 0.00 0.00 0.00 1.50 135.00 413.50 695.50 2716.50
1990 680.00 557.00 354.50 127.50 29.50 0.00 0.00 0.00 0.00 139.00 403.50 705.00 2996.00
1991 651.50 424.00 481.00 238.00 55.00 10.00 0.00 0.00 4.50 121.50 459.50 642.00 3087.00
1992 715.50 465.00 403.00 154.00 21.50 0.00 0.00 0.00 0.00 77.50 562.50 642.00 3041.00
1993 533.00 477.50 353.00 180.50 11.50 6.00 0.00 0.00 3.50 147.50 472.00 634.00 2818.50
1994 664.00 494.50 335.50 181.00 39.50 0.00 0.00 0.00 0.00 142.50 443.50 580.50 2881.00
1995 621.50 351.50 342.00 259.00 77.50 0.00 0.00 0.00 0.00 83.00 309.50 609.50 2653.50
1996 594.00 334.50 350.00 158.00 7.00 0.00 0.00 0.00 0.00 164.50 396.50 610.50 2615.00
1997 599.00 504.50 292.50 211.00 0.50 0.50 0.00 0.00 0.00 177.00 0.00 z 737.50 2522.50
1998 609.00 565.00 417.00 289.00 41.00 0.00 0.00 0.00 0.00 100.00 372.00 628.00 3021.00
1999 583.50 458.50 352.50 264.00 39.50 3.50 0.00 0.00 0.00 129.00 325.50 712.50 2868.50
2000 598.50 443.50 374.00 102.00 12.00 0.00 0.00 0.00 0.00 171.50 569.50 617.50 2888.50
2001 684.50 514.00 386.50 180.50 19.00 0.00 0.00 0.00 0.00 48.50 316.50 726.50 2876.00
2002 653.50 472.50 391.50 59.00 26.00 0.00 0.00 0.00 0.00 154.50 375.00 677.87 a 2809.87
2003 493.00 443.50 371.50 171.00 20.50 0.00 0.00 0.00 d 0.00 22.00 375.50 645.50 2542.50
2004 571.00 576.00 201.50 162.00 7.50 0.00 0.00 0.00 11.50 103.00 480.50 661.00 2774.00
2005 532.50 339.00 h 228.50 m 162.50 14.50 f 0.00 z 0.00 0.00 0.00 98.50 0.00 z 133.00 y 793.50
2006 333.00 n 269.00 h 353.52 e 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 709.00 1062.52
2007 777.58 a 515.50 339.50 149.00 10.50 1.50 0.00 0.00 0.00 88.50 262.50 696.50 2841.08
2008 655.50 0.00 z 0.00 z 189.60 e 47.00 1.50 f 0.00 b 0.00 0.00 99.00 387.00 631.50 2009.60
2009 557.00 454.50 309.50 205.50 1.50 0.00 0.00 b 0.00 k 0.00 156.00 319.50 718.50 2722.00
2010 661.50 544.50 443.00 200.00 91.00 0.00 0.00 0.00 0.00 72.00 478.50 535.50 3026.00
2011 699.50 609.26 a 218.50 g 101.50 71.50 0.00 0.00 0.00 1.00 87.83 a 434.46 b 728.50 a 2733.56
2012 595.50 513.00 379.50 140.50 14.50 0.00 0.00 f 0.00 2.50 92.00 g 300.50 642.22 a 2588.22
2013 767.25 a 647.00 197.00 h 10.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 20.50 z 1414.25
Period of Record Statistics
MEAN 703.17 545.90 439.88 234.67 72.53 5.73 0.02 0.08 7.44 158.45 462.30 695.11 3274.67
S.D. 96.14 91.58 95.34 80.65 53.10 11.73 0.15 0.36 12.88 67.47 79.11 80.39 420.81
SKEW 0.12 0.27 0.13 0.28 1.29 4.23 9.75 4.41 2.64 0.38 0.03 0.02 0.41
MAX 918.50 812.00 662.50 457.00 264.00 88.50 1.50 2.07 74.00 349.00 705.00 942.00 4310.57
MIN 493.00 322.00 201.50 59.00 0.50 0.00 0.00 0.00 0.00 22.00 262.50 512.00 2542.50
NO YRS 105 103 102 102 101 102 98 101 102 103 97 99 71