LEVELLAND, TEXAS

Monthly Total Heating Degree Days

(415183)

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
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 139.50 546.50 824.00 1510.00
1938 805.00 0.00 z 347.50 219.50 48.50 0.00 0.00 0.00 0.50 115.00 560.00 724.00 2820.00
1939 729.00 743.50 386.00 167.50 42.50 0.00 0.00 0.00 12.00 169.00 588.00 0.00 z 2837.50
1940 0.00 z 555.00 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 555.00
1941 0.00 z 0.00 z 545.00 199.00 58.50 0.52 a 0.00 0.00 43.45 a 156.50 419.48 a 662.88 a 2085.33
1942 812.00 616.50 438.00 203.00 42.00 4.00 0.00 0.00 57.50 197.50 292.00 785.00 3447.50
1943 909.50 646.50 673.00 212.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2441.50
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 64.50 521.00 620.50 1206.00
1947 809.10 a 709.00 607.00 243.00 47.50 0.00 0.00 0.00 z 0.00 z 85.00 630.00 708.00 3838.60
1948 946.00 675.50 554.50 83.00 29.50 0.00 0.00 0.00 22.50 168.50 537.00 611.00 3627.50
1949 1009.50 571.50 402.00 184.50 g 26.00 0.50 0.00 0.00 23.00 225.00 320.50 739.41 d 3317.41
1950 607.00 468.50 471.00 181.50 39.00 7.00 0.00 0.00 11.00 49.50 429.00 668.50 2932.00
1951 812.50 530.50 511.50 258.50 35.50 1.00 0.00 0.00 26.00 146.00 547.00 658.00 3526.50
1952 595.00 556.18 a 510.00 206.50 39.00 0.00 0.50 0.00 d 11.50 211.00 574.50 735.50 3439.68
1953 509.43 a 579.00 317.50 241.11 c 80.00 f 0.00 0.00 0.00 3.50 132.00 460.50 824.00 3067.04
1954 721.00 400.00 493.50 84.00 84.50 4.00 0.00 0.00 0.00 204.48 e 463.80 e 304.00 p 2455.28
1955 762.50 629.39 e 134.00 q 0.00 z 31.00 i 15.00 0.00 0.00 5.17 a 150.50 533.33 c 591.50 2687.40
1956 507.00 f 735.00 338.50 208.00 9.00 0.00 0.00 0.00 1.00 h 131.75 e 332.50 h 578.87 e 2001.12
1957 671.50 414.30 a 432.50 299.50 65.50 0.00 d 0.00 0.00 13.00 237.50 568.93 b 617.00 3319.72
1958 852.50 642.00 645.50 275.00 24.50 0.00 0.00 0.00 38.50 199.84 c 460.00 c 550.00 g 3137.84
1959 761.00 640.96 e 341.50 g 184.44 c 25.00 1.50 k 0.00 b 0.00 16.50 212.50 394.50 h 667.69 e 2508.09
1960 838.50 758.06 d 346.50 j 128.04 b 66.50 0.00 0.00 0.00 h 13.50 145.24 d 247.50 l 845.00 2794.84
1961 877.00 618.50 436.77 c 167.78 c 3.00 0.00 d 0.00 0.00 23.00 163.50 388.00 l 796.24 d 3085.79
1962 854.50 330.50 f 502.50 151.73 d 10.50 0.60 e 0.00 0.00 z 0.00 z 113.00 368.08 d 461.50 g 2000.91
1963 957.50 552.00 375.00 0.00 z 19.50 1.00 0.00 0.00 12.50 44.50 466.00 867.50 3295.50
1964 773.00 797.50 d 453.50 174.50 13.00 f 4.82 b 0.00 c 0.00 50.00 167.00 481.55 a 739.00 3640.87
1965 663.18 c 747.50 739.00 143.50 33.50 3.50 0.00 0.00 39.50 193.50 312.00 645.50 3520.68
1966 1004.00 763.50 451.00 233.00 100.50 0.00 0.00 21.50 11.50 268.00 398.28 a 809.88 c 4061.15
1967 780.50 653.00 321.50 91.50 90.50 3.00 0.00 0.00 26.50 207.00 479.48 a 857.50 3510.48
1968 780.50 717.00 514.00 286.67 c 59.33 b 4.66 a 0.00 1.50 31.50 156.03 a 544.00 756.40 a 3851.58
1969 651.00 626.89 a 775.00 164.00 58.50 15.50 0.00 0.00 4.50 332.00 514.00 676.00 3817.39
1970 883.00 582.50 636.50 250.00 71.50 23.00 0.00 0.00 76.00 308.50 528.00 635.50 3994.50
1971 754.00 678.00 523.00 230.00 47.53 a 0.00 2.00 0.00 104.00 179.00 461.50 723.50 3702.53
1972 780.00 625.00 325.50 126.00 57.00 0.00 5.00 0.00 29.00 234.50 727.00 858.00 3767.00
1973 958.00 739.00 496.00 372.00 89.50 0.00 0.00 0.00 49.00 149.00 414.50 733.00 4000.00
1974 815.00 642.00 287.00 180.00 35.50 4.00 0.00 0.00 140.00 198.50 521.00 805.00 3628.00
1975 798.50 706.50 560.50 304.00 51.00 4.50 0.00 0.00 107.50 209.50 519.00 730.50 3991.50
1976 833.50 450.50 471.00 139.00 98.00 0.00 0.00 0.00 41.00 391.50 705.50 810.00 3940.00
1977 994.00 609.00 514.00 224.50 9.00 0.00 0.00 0.00 0.00 143.50 446.00 677.00 3617.00
1978 1007.50 864.00 480.50 108.00 77.50 6.50 0.00 0.52 a 47.00 184.00 505.50 860.00 4141.02
1979 1061.00 718.00 505.50 207.00 96.00 19.50 0.50 0.00 22.50 165.00 653.50 758.50 4207.00
1980 786.00 673.00 542.50 277.00 75.00 0.00 0.00 0.00 28.50 243.50 613.50 646.00 3885.00
1981 766.50 592.00 495.50 156.50 42.50 7.50 0.00 0.00 25.50 226.50 399.00 657.00 3368.50
1982 834.00 720.00 445.00 248.00 64.00 4.50 0.00 0.00 z 9.00 228.00 549.00 852.00 3953.50
1983 945.50 636.50 490.00 365.00 60.50 30.00 0.00 0.00 36.00 145.50 431.00 1051.50 4191.50
1984 870.00 622.50 528.00 264.50 39.00 3.00 0.00 0.00 97.00 262.00 513.50 679.50 3879.00
1985 896.00 697.50 409.00 142.00 37.50 9.00 0.00 0.00 62.00 190.50 465.50 848.50 3757.50
1986 680.50 550.50 359.50 122.00 49.50 0.50 0.00 0.00 9.50 225.50 555.00 781.00 3333.50
1987 852.00 581.50 583.00 286.50 33.50 2.00 0.00 1.50 13.50 155.00 492.50 814.50 3815.50
1988 924.00 652.50 501.50 236.50 55.50 0.00 0.00 10.50 14.50 134.00 424.50 755.50 3709.00
1989 681.00 722.50 391.50 177.00 21.00 8.50 0.00 0.00 77.50 132.00 472.50 935.50 3619.00
1990 723.00 542.00 482.00 181.50 105.50 0.00 3.50 0.00 4.00 182.50 399.00 823.50 3446.50
1991 876.00 503.00 409.00 147.00 24.00 0.00 0.00 0.00 87.00 170.50 644.50 737.00 3598.00
1992 823.50 525.50 361.50 176.00 68.50 6.50 0.00 0.00 21.50 112.00 597.50 761.50 3454.00
1993 827.00 668.00 494.00 222.00 48.00 0.00 0.00 0.00 32.00 239.00 628.00 706.50 3864.50
1994 780.00 660.50 424.50 227.00 60.00 0.00 0.00 1.50 13.50 162.00 445.50 627.00 3401.50
1995 742.00 490.00 480.00 235.50 43.00 0.00 0.00 0.00 57.00 158.00 432.00 704.00 3341.50
1996 784.00 546.00 550.00 205.50 2.50 0.00 0.00 0.00 36.50 197.00 476.50 677.50 3475.50
1997 842.50 691.50 384.50 356.00 59.50 4.50 0.00 3.00 16.00 214.00 550.50 860.00 3982.00
1998 668.50 586.50 564.50 262.00 3.50 0.50 0.00 0.00 0.00 122.50 402.00 716.00 3326.00
1999 651.50 454.00 483.00 212.00 77.50 0.00 0.50 0.00 54.00 185.50 333.50 738.00 3189.50
2000 689.00 444.50 392.50 172.50 29.50 4.50 0.00 0.00 34.50 184.00 683.50 883.50 3518.00
2001 870.50 579.50 561.50 123.00 23.50 0.00 0.00 0.00 14.00 166.00 402.00 707.50 3447.50
2002 726.00 679.50 549.50 174.50 42.50 0.00 0.00 0.00 9.00 258.00 548.50 752.50 3740.00
2003 708.00 637.50 413.50 147.50 25.00 3.00 0.00 0.00 25.00 91.50 462.50 716.50 3230.00
2004 742.50 714.50 326.50 207.50 0.00 z 0.00 5.00 0.00 30.50 146.50 579.00 752.50 3504.50
2005 679.00 569.50 495.50 204.50 109.00 0.00 3.50 0.00 6.50 187.50 433.50 759.00 3447.50
2006 599.50 590.50 408.50 99.50 29.00 0.00 0.00 0.00 41.00 206.50 398.50 765.00 3138.00
2007 957.50 626.00 330.00 308.50 62.00 1.50 0.00 0.00 0.00 120.00 462.00 722.00 3589.50
2008 823.50 573.50 445.50 223.00 65.50 0.00 0.00 0.00 15.00 185.00 451.50 734.00 3516.50
2009 732.00 468.50 376.00 244.50 49.00 0.00 2.50 0.00 33.50 278.00 411.50 934.00 3529.50
2010 850.00 759.50 490.00 205.50 85.00 0.00 0.00 0.00 3.50 125.00 491.00 667.00 3676.50
2011 835.50 724.00 323.50 105.50 76.00 0.00 0.00 0.00 16.50 152.50 477.00 880.00 3590.50
2012 686.50 652.00 296.00 66.00 40.00 0.00 0.00 0.00 29.50 115.00 h 0.00 z 0.00 z 1770.00
Period of Record Statistics
MEAN 800.43 624.58 468.06 201.89 49.95 3.02 0.33 0.61 30.83 179.36 494.36 749.93 3629.49
S.D. 112.26 96.48 101.67 67.42 26.26 5.70 1.06 2.95 28.76 60.54 92.06 91.93 280.80
SKEW 0.02 -0.22 0.54 0.30 0.28 2.82 3.41 6.12 1.63 0.62 0.27 0.57 0.08
MAX 1061.00 864.00 775.00 372.00 109.00 30.00 5.00 21.50 140.00 391.50 727.00 1051.50 4207.00
MIN 509.43 400.00 287.00 66.00 2.50 0.00 0.00 0.00 0.00 44.50 292.00 578.87 2932.00
NO YRS 69 69 68 68 66 69 70 66 67 71 67 67 51