MIDLAND INTL AP, TEXAS

Monthly Total Heating Degree Days

(415890)

Base Temperature = 65 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201210
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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 0.00 13.00 101.50 434.00 463.00 1011.50
1949 923.00 434.00 273.00 0.00 z 0.00 0.00 0.00 0.00 4.50 160.50 248.00 579.00 2622.00
1950 462.00 338.00 290.50 123.50 17.50 0.00 0.00 0.00 0.00 5.00 344.50 588.00 2169.00
1951 692.50 436.00 341.00 151.00 18.00 5.50 0.00 0.00 5.50 52.50 419.00 519.50 2640.50
1952 427.50 410.00 363.50 96.00 32.50 0.00 2.50 0.00 18.00 102.00 447.50 610.50 2510.00
1953 406.00 494.50 165.50 88.50 60.00 0.00 0.00 0.00 0.00 88.00 347.00 730.00 2379.50
1954 557.00 315.50 343.50 50.00 52.50 0.00 0.00 0.00 0.00 108.50 326.00 523.50 2276.50
1955 684.50 511.50 283.00 70.50 3.50 3.50 0.00 0.00 0.00 77.50 389.50 519.00 2542.50
1956 614.00 547.00 270.00 148.50 0.00 0.00 0.00 0.00 0.00 57.50 445.00 541.50 2623.50
1957 626.00 308.50 300.00 178.50 26.00 11.50 0.00 0.00 3.00 159.00 535.00 512.50 2660.00
1958 715.00 573.00 529.00 182.00 16.50 0.00 0.00 0.00 10.50 165.00 343.50 671.00 3205.50
1959 693.00 509.00 349.00 184.50 6.00 0.00 0.00 0.00 9.50 115.00 541.00 565.00 2972.00
1960 675.00 651.50 434.50 86.50 29.00 0.00 0.00 0.00 3.00 66.50 314.50 764.50 3025.00
1961 769.00 478.50 299.50 129.00 6.00 5.00 0.00 0.00 13.50 68.00 489.50 633.50 2891.50
1962 804.00 314.00 402.00 98.50 7.00 0.00 0.00 0.00 2.50 76.00 304.50 601.50 2610.00
1963 783.00 493.50 239.50 47.00 19.50 0.00 0.00 0.00 1.50 3.50 281.50 769.50 2638.50
1964 663.50 649.00 293.50 67.00 5.00 0.00 0.00 0.00 7.00 37.50 289.50 500.00 2512.00
1965 542.50 611.50 535.50 53.50 6.50 0.00 0.00 0.00 12.00 101.00 237.00 475.50 2575.00
1966 838.00 626.50 264.50 126.00 48.00 0.00 0.00 3.50 4.50 164.00 248.00 671.00 2994.00
1967 664.00 521.00 181.00 25.00 23.00 0.00 0.00 0.00 9.50 100.00 331.50 716.00 2571.00
1968 643.00 590.00 365.50 150.00 15.00 0.00 0.00 0.00 0.00 62.00 463.50 672.50 2961.50
1969 541.00 474.50 543.50 55.00 31.00 0.50 0.00 0.00 0.00 219.50 412.50 539.50 2817.00
1970 714.00 488.50 471.50 140.50 50.00 5.50 0.00 0.00 42.00 154.50 358.00 447.00 2871.50
1971 546.50 498.00 304.00 123.00 16.00 0.00 0.00 0.50 53.00 76.50 355.00 533.50 2506.00
1972 647.00 454.50 182.50 39.00 12.50 0.00 0.00 0.00 20.00 162.00 558.00 666.50 2742.00
1973 811.50 593.50 327.50 255.50 58.00 0.00 0.00 0.00 16.00 85.00 256.50 569.00 2972.50
1974 615.50 436.00 126.00 71.00 1.00 0.00 0.00 0.00 47.50 70.00 348.50 601.50 2317.00
1975 591.50 475.50 321.50 138.00 2.50 3.00 0.00 0.00 43.00 86.50 349.50 567.50 2578.50
1976 655.50 264.50 266.50 77.00 41.00 0.00 0.00 0.00 10.50 227.50 552.00 642.00 2736.50
1977 762.50 415.50 327.50 122.50 0.00 0.00 0.00 0.00 0.00 49.50 302.50 485.00 2465.00
1978 832.50 594.00 251.50 50.50 31.00 0.00 0.00 0.00 37.00 142.50 382.50 696.00 3017.50
1979 902.50 551.50 302.00 113.50 35.50 4.00 0.00 0.00 4.00 66.00 466.50 577.00 3022.50
1980 625.00 541.50 392.00 191.00 36.50 0.00 0.00 0.00 22.00 178.50 537.50 582.50 3106.50
1981 677.00 461.00 390.00 101.50 21.50 0.00 0.00 0.00 0.00 111.50 240.50 535.00 2538.00
1982 667.50 535.50 252.00 116.50 22.00 0.00 0.00 0.00 0.00 132.00 386.50 669.50 2781.50
1983 719.50 475.50 288.00 229.00 20.00 3.50 0.00 0.00 9.00 59.50 310.50 854.50 2969.00
1984 774.00 486.50 320.00 105.50 7.50 0.00 0.00 0.00 67.50 139.00 431.50 526.00 2857.50
1985 852.00 579.50 282.50 55.50 3.00 1.50 0.00 0.00 31.00 92.00 314.50 740.50 2952.00
1986 581.50 396.00 202.00 41.00 11.00 0.00 0.00 0.00 2.50 141.00 429.50 662.00 2466.50
1987 696.50 492.00 480.00 211.00 16.50 0.00 0.00 0.00 3.00 40.50 432.50 644.50 3016.50
1988 796.50 546.50 345.00 104.00 13.00 0.00 0.00 0.00 11.00 59.00 325.50 661.50 2862.00
1989 594.00 607.50 285.00 104.50 2.00 0.00 0.00 0.00 39.00 101.00 348.50 816.50 2898.00
1990 577.50 405.50 328.50 109.50 60.50 0.00 0.00 0.00 2.50 103.50 300.50 670.50 2558.50
1991 723.50 404.50 268.50 50.00 8.00 0.00 0.00 0.00 47.50 110.50 519.50 596.00 2728.00
1992 736.50 411.00 242.00 117.50 31.50 0.00 0.00 0.00 1.50 35.00 480.50 573.50 2629.00
1993 671.50 502.00 328.50 122.00 17.00 0.00 0.00 3.50 10.00 189.00 465.00 561.00 2869.50
1994 647.50 477.50 269.00 120.50 19.50 0.00 0.00 0.00 4.50 83.50 293.00 507.00 2422.00
1995 594.50 370.50 350.00 123.00 8.50 0.00 0.00 0.00 29.50 46.50 307.50 579.00 2409.00
1996 633.00 415.50 432.00 144.50 0.00 0.00 0.00 0.00 26.50 104.50 366.50 546.00 2668.50
1997 733.50 566.50 238.00 211.50 23.50 0.00 0.00 0.00 3.50 122.50 444.00 712.50 3055.50
1998 525.00 440.50 373.00 134.50 0.00 0.00 0.00 0.00 0.00 49.50 264.50 651.00 2438.00
1999 516.15 a 289.50 291.00 108.00 10.50 0.00 a 0.00 0.00 16.00 108.50 258.50 619.50 2217.65
2000 547.50 282.50 200.00 85.50 13.50 0.00 0.00 0.00 13.50 136.92 a 541.00 762.00 2582.42
2001 729.50 463.00 406.00 59.00 0.50 0.00 0.00 0.00 5.50 55.50 307.24 a 628.50 2654.74
2002 593.00 578.50 401.00 96.50 9.50 0.00 0.00 0.00 0.00 167.50 457.50 658.50 2962.00
2003 642.50 520.00 259.50 59.00 10.50 0.00 0.00 0.00 0.00 44.50 323.00 565.50 2424.50
2004 564.50 578.00 233.00 117.00 23.00 0.00 1.00 0.00 2.00 50.50 436.50 643.50 2649.00
2005 528.50 484.50 377.00 122.00 50.00 0.00 0.00 0.00 3.00 127.00 331.00 633.00 2656.00
2006 486.50 464.00 250.50 35.50 5.50 0.00 0.00 0.00 7.00 107.50 311.50 659.00 2327.00
2007 816.00 471.00 236.50 179.00 35.50 0.00 a 0.00 0.00 0.00 72.00 343.50 594.50 2748.00
2008 689.00 406.50 307.00 96.00 14.00 0.00 0.00 0.00 1.00 0.00 z 375.50 592.00 2481.00
2009 622.00 353.00 236.00 99.00 0.00 0.00 0.00 0.00 13.00 165.00 320.50 741.00 2549.50
2010 713.50 595.00 330.50 118.50 32.00 0.00 0.00 0.00 0.00 34.50 363.00 556.00 2743.00
2011 698.00 543.00 155.50 23.00 28.50 0.00 0.00 0.00 3.00 77.00 323.50 716.50 2568.00
2012 541.50 461.50 191.50 20.50 9.50 0.00 0.00 0.00 12.50 50.50 i 0.00 z 0.00 z 1237.00
Period of Record Statistics
MEAN 661.20 479.12 310.76 108.76 19.28 0.67 0.05 0.12 11.96 99.28 375.18 615.77 2690.34
S.D. 110.89 93.12 89.85 52.14 16.47 1.94 0.33 0.61 15.49 49.45 87.25 88.17 241.12
SKEW 0.07 -0.35 0.58 0.54 0.90 3.58 6.65 5.35 1.70 0.46 0.48 0.42 0.01
MAX 923.00 651.50 543.50 255.50 60.50 11.50 2.50 3.50 67.50 227.50 558.00 854.50 3205.50
MIN 406.00 264.50 126.00 20.50 0.00 0.00 0.00 0.00 0.00 3.50 237.00 447.00 2169.00
NO YRS 64 64 64 63 64 65 65 65 65 63 64 64 61