TUCSON INTL AP, ARIZONA

Monthly Total Cooling Degree Days

(028820)

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
1930 0.00 z 9.15 b 2.00 148.00 193.00 523.00 631.50 613.00 436.00 130.00 31.15 d 0.00 2716.81
1931 0.00 1.00 13.00 101.50 330.00 556.50 736.50 546.00 502.00 208.00 47.50 0.00 3042.00
1932 0.00 0.50 6.50 82.50 248.00 465.50 624.50 617.50 502.50 173.00 16.50 0.00 z 2737.00
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 504.50 0.00 z 0.00 z 0.00 z 504.50
1939 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 553.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 553.00
1940 0.00 z 0.00 z 15.00 97.50 366.00 552.00 684.07 a 603.98 a 473.00 212.00 7.00 3.21 b 3013.76
1941 0.00 2.00 0.00 20.50 279.50 457.50 663.00 563.00 438.62 a 0.00 z 0.00 z 0.00 z 2424.12
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 0.00 z 0.00 z 0.00 z 676.50 629.00 530.50 211.50 0.00 0.00 2047.50
1949 0.00 0.00 2.00 136.50 259.50 539.50 621.00 593.50 516.50 122.50 37.00 0.00 2828.00
1950 0.00 0.00 26.00 149.00 225.00 499.00 551.00 611.00 399.00 365.50 16.00 0.00 2841.50
1951 0.00 5.50 0.00 65.00 304.50 463.50 738.50 615.50 545.00 252.00 2.00 0.00 2991.50
1952 0.00 0.00 5.50 74.50 364.50 550.50 649.00 630.00 549.00 352.00 20.50 0.00 3195.50
1953 1.00 0.00 28.00 71.50 160.50 573.00 675.00 662.50 537.00 215.50 52.50 0.00 2976.50
1954 0.00 2.50 8.00 198.00 344.50 541.50 674.00 569.50 536.50 298.50 28.50 4.50 3206.00
1955 0.00 0.00 13.00 59.00 225.00 520.00 605.00 521.50 485.00 288.50 8.50 0.00 2725.50
1956 0.50 0.00 22.50 61.50 333.50 635.50 632.00 588.00 578.50 208.00 13.00 0.00 3073.00
1957 0.00 24.00 4.50 86.00 210.00 609.00 716.00 594.00 487.00 131.50 0.00 0.00 2862.00
1958 0.00 1.00 0.00 91.00 438.00 595.00 677.50 602.00 463.50 239.50 5.50 0.00 3113.00
1959 0.00 0.00 2.00 136.00 242.50 611.50 667.50 519.00 454.50 190.00 0.00 0.00 2823.00
1960 0.00 0.00 16.50 93.00 220.50 553.50 650.00 595.00 484.00 109.50 15.50 0.00 2737.50
1961 0.00 0.00 3.50 80.50 256.00 590.50 652.00 521.00 361.00 168.50 0.00 0.00 2633.00
1962 0.00 3.50 2.50 160.50 216.50 459.00 616.50 679.50 487.00 187.00 35.50 0.00 2847.50
1963 0.00 9.50 12.50 53.50 378.50 463.00 700.50 533.50 522.50 257.00 19.50 0.00 2950.00
1964 0.00 0.00 11.00 59.00 282.50 510.00 655.50 513.00 338.50 226.00 4.50 0.00 2600.00
1965 2.00 0.00 3.50 102.00 182.00 377.50 620.00 587.50 363.00 247.00 40.50 2.00 2527.00
1966 0.00 0.00 18.50 80.50 343.00 533.50 627.50 554.00 400.00 118.50 12.00 1.50 2689.00
1967 0.00 0.00 27.00 29.50 232.00 469.50 633.00 607.50 471.00 219.00 29.00 0.00 2717.50
1968 0.00 4.00 9.50 43.00 259.00 553.50 614.50 503.50 471.50 212.50 10.00 0.00 2681.00
1969 0.00 0.00 14.00 82.50 343.00 471.00 653.00 661.00 486.00 113.50 0.50 0.00 2824.50
1970 0.00 5.00 0.00 23.00 323.50 551.50 686.00 613.50 340.50 63.50 3.50 0.00 2610.00
1971 5.00 0.00 43.00 48.50 147.50 486.50 697.00 505.00 423.00 96.00 10.50 0.00 2462.00
1972 0.00 0.50 76.00 76.50 225.50 496.50 670.50 553.50 406.50 146.50 1.00 0.00 2653.00
1973 0.00 0.00 0.00 19.00 265.50 490.00 598.50 609.00 438.00 200.50 24.50 1.50 2646.50
1974 0.00 0.00 16.00 82.50 294.00 655.50 573.50 556.00 383.00 181.00 1.00 0.00 2742.50
1975 0.00 0.00 3.00 9.50 179.50 464.50 594.50 644.00 450.00 178.50 25.00 0.00 2548.50
1976 2.00 0.00 12.50 84.00 299.00 550.50 585.50 628.00 379.00 134.00 31.50 0.00 2706.00
1977 0.00 0.00 4.50 129.00 188.00 590.50 682.00 662.50 509.00 258.50 22.00 0.00 3046.00
1978 0.00 0.00 50.00 70.50 276.00 622.50 713.50 610.00 477.00 287.50 26.50 0.00 3133.50
1979 0.00 0.00 0.50 98.00 243.50 543.50 697.00 570.00 574.00 274.50 5.50 0.00 3006.50
1980 0.00 2.50 1.00 105.00 204.00 597.50 732.50 608.00 463.50 211.50 35.00 2.50 2963.00
1981 0.00 7.00 3.50 154.50 259.50 633.00 627.00 662.00 470.50 132.00 24.00 1.50 2974.50
1982 0.00 4.00 4.00 79.00 237.00 465.00 614.00 584.50 425.50 105.00 0.00 0.00 2518.00
1983 0.00 0.00 8.00 33.00 280.00 496.50 679.00 589.50 515.50 138.50 9.50 0.00 2749.50
1984 0.00 0.00 4.50 83.00 460.50 541.50 593.50 553.50 494.00 91.00 10.50 0.00 2832.00
1985 0.00 0.50 6.50 154.00 337.00 624.00 698.00 653.00 371.50 165.50 12.50 0.00 3022.50
1986 2.00 22.00 84.00 144.00 372.00 646.00 634.50 649.50 421.00 152.50 2.50 0.00 3130.00
1987 0.00 1.00 10.50 177.00 288.00 637.50 693.50 621.00 446.00 314.50 10.50 0.00 3199.50
1988 1.00 11.00 55.00 136.00 367.00 652.50 708.00 648.00 462.00 319.00 49.00 0.50 3409.00
1989 0.00 14.00 85.00 274.00 387.50 611.00 772.00 668.50 585.50 214.50 12.50 0.00 3624.50
1990 0.00 6.00 60.50 159.00 319.00 709.00 618.00 546.00 514.00 256.50 52.50 0.00 3240.50
1991 0.00 0.50 5.00 55.00 267.00 494.50 697.50 670.00 470.50 338.00 18.50 0.00 3016.50
1992 0.00 0.00 3.00 198.00 363.00 583.50 674.50 620.50 556.00 284.00 1.00 0.00 3283.50
1993 0.50 0.00 19.50 138.00 405.50 598.50 711.00 635.50 491.50 240.50 9.00 2.50 3252.00
1994 0.00 3.50 32.00 152.00 326.50 726.00 786.50 782.00 574.50 195.50 11.00 0.00 3589.50
1995 0.00 6.50 29.50 81.50 254.00 548.50 724.50 692.00 535.00 232.00 9.50 0.00 3113.00
1996 0.00 1.00 22.00 141.50 434.50 670.50 732.00 661.50 380.00 261.00 30.00 1.50 3335.50
1997 0.00 1.50 61.50 102.50 455.50 542.00 712.00 643.00 574.50 208.50 23.00 0.00 3324.00
1998 1.00 0.00 17.50 51.00 248.00 503.50 665.00 665.50 527.50 197.00 7.50 1.00 2884.50
1999 0.00 0.50 17.00 78.50 308.00 564.50 589.50 626.00 504.50 300.50 98.50 0.50 3088.00
2000 3.00 1.00 0.50 186.00 470.50 586.00 718.00 616.00 592.50 161.00 0.00 0.00 3334.50
2001 0.00 0.00 33.50 145.50 443.50 616.00 656.50 646.50 581.50 255.00 76.00 0.00 3454.00
2002 0.00 3.50 24.00 202.00 334.50 689.00 676.50 653.50 525.00 162.50 11.00 0.00 3281.50
2003 0.00 3.00 21.00 90.50 401.50 621.00 750.00 659.00 532.00 321.00 10.50 2.00 3411.50
2004 0.00 1.00 139.50 94.50 395.00 595.00 682.00 617.00 479.00 188.00 16.50 0.00 3207.50
2005 1.50 0.00 11.50 114.50 383.00 618.50 792.50 586.00 556.00 240.00 56.00 0.00 3359.50
2006 1.00 3.00 12.50 125.00 433.50 701.00 722.50 579.00 405.00 181.50 40.00 0.00 3204.00
2007 0.00 0.00 75.00 144.00 404.50 630.00 709.50 676.50 538.50 245.50 90.50 0.00 3514.00
2008 0.00 3.50 31.50 124.00 261.50 659.50 638.50 631.50 521.00 268.00 44.50 0.00 3183.50
2009 7.00 17.50 57.50 126.00 467.00 535.50 777.00 734.00 559.50 196.50 75.50 0.00 3553.00
2010 0.00 0.00 14.50 82.50 286.48 b 638.50 742.00 678.50 590.00 244.00 34.50 1.00 3311.98
2011 0.00 0.00 42.00 177.00 271.50 634.00 715.50 752.50 527.50 268.50 7.50 0.00 3396.00
2012 2.00 0.00 32.50 194.00 434.50 685.00 643.00 718.00 511.50 265.50 64.50 0.00 3550.50
2013 0.00 0.00 87.00 3.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 87.00
Period of Record Statistics
MEAN 0.43 2.64 22.63 105.86 307.82 567.60 671.84 615.91 484.58 212.05 22.57 0.38 3026.92
S.D. 1.18 4.98 26.97 52.04 83.25 73.00 53.07 57.30 65.05 67.54 22.42 0.89 303.68
SKEW 3.76 2.70 1.96 0.54 0.23 -0.04 0.10 0.24 -0.40 0.05 1.44 2.65 0.06
MAX 7.00 24.00 139.50 274.00 470.50 726.00 792.50 782.00 592.50 365.50 98.50 4.50 3624.50
MIN 0.00 0.00 0.00 9.50 147.50 377.50 551.00 503.50 338.50 63.50 0.00 0.00 2462.00
NO YRS 68 69 70 69 69 70 70 70 71 69 69 68 65