LITTLEFIELD, TEXAS

Monthly Total Growing Degree Days

(415265)

Base Temperature = 50 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
1966 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 977.57 b 730.57 a 576.43 b 257.30 a 142.00 25.00 2708.86
1967 28.50 17.50 d 235.50 423.50 503.48 b 761.90 a 824.00 750.50 505.20 e 319.09 b 66.50 3.50 4439.17
1968 25.00 13.00 122.85 d 186.50 478.50 763.00 803.50 784.50 543.50 379.50 59.00 8.27 a 4167.12
1969 31.50 9.00 20.50 308.00 563.68 a 737.50 989.50 910.50 594.50 236.50 84.00 11.50 4496.68
1970 27.50 15.00 43.00 267.00 574.50 759.50 928.00 874.00 613.00 219.50 85.86 a 41.00 4447.86
1971 7.50 18.67 a 109.00 260.00 506.00 804.00 888.50 675.00 546.00 320.50 100.50 25.00 4260.67
1972 19.00 60.50 202.50 396.00 474.50 752.50 0.00 z 743.50 608.00 330.00 17.50 4.00 3608.00
1973 0.00 5.00 36.00 162.50 458.50 730.00 836.00 821.50 575.00 410.50 120.00 23.00 4178.00
1974 26.50 20.00 237.00 328.00 672.50 788.00 921.00 721.78 a 364.50 281.00 54.50 3.00 4417.78
1975 8.00 6.74 a 61.00 229.50 486.50 802.50 753.00 778.50 472.50 349.27 a 116.00 14.50 4078.01
1976 2.50 95.50 115.50 349.00 445.00 759.00 760.00 828.00 548.79 a 181.00 34.50 2.50 4121.29
1977 0.00 32.50 63.00 261.50 607.00 838.50 905.50 854.50 704.00 354.50 88.50 32.50 4742.00
1978 4.00 3.50 115.00 404.50 567.00 804.00 940.50 795.50 572.00 297.00 64.50 7.00 4574.50
1979 0.00 21.00 34.00 246.00 464.50 650.50 853.00 728.50 618.50 384.50 32.50 7.50 4040.50
1980 13.50 23.00 48.05 a 186.50 459.50 934.00 993.50 893.00 636.50 276.93 a 111.96 b 43.00 4619.45
1981 2.00 45.50 54.25 a 319.00 507.50 807.50 906.00 724.50 567.00 289.50 99.00 22.00 4343.75
1982 5.50 34.00 91.50 201.50 473.00 650.00 886.50 884.00 678.50 249.50 74.00 6.00 4234.00
1983 0.00 1.50 62.00 152.50 424.00 641.00 906.00 885.00 695.50 349.00 117.93 a 5.50 4239.93
1984 0.00 17.00 46.00 165.50 546.00 744.00 803.50 774.50 526.50 223.00 79.00 23.50 3948.50
1985 0.00 27.00 123.50 321.00 555.50 685.00 840.50 898.00 599.00 248.50 54.50 0.00 4352.50
1986 0.00 z 81.00 122.00 323.50 520.00 676.50 878.50 776.50 575.00 241.50 45.00 0.00 4239.50
1987 3.00 14.50 35.00 207.00 501.50 707.50 855.00 776.00 527.50 304.50 96.00 21.50 4049.00
1988 1.00 20.00 115.50 208.50 482.50 716.50 799.50 801.50 550.00 305.00 119.00 0.00 4119.00
1989 4.00 26.00 205.00 361.00 607.00 641.50 834.00 769.50 487.00 353.50 73.50 3.00 4365.00
1990 1.00 23.50 90.00 251.00 484.50 965.50 798.50 767.50 636.00 284.00 115.50 10.50 4427.50
1991 0.00 16.50 100.00 274.00 636.50 768.50 819.50 795.00 470.00 321.00 17.50 6.00 4224.50
1992 0.00 19.00 100.00 288.00 445.50 650.00 854.50 768.00 574.00 332.50 48.62 a 9.00 4089.12
1993 0.00 9.50 70.00 0.00 z 520.50 796.00 929.00 841.50 550.50 264.50 13.50 8.00 4003.00
1994 5.00 15.00 125.00 263.50 492.00 895.00 927.50 828.50 604.00 297.50 88.50 6.20 a 4547.70
1995 21.50 48.50 137.50 214.50 479.00 750.00 913.50 852.00 578.79 a 273.50 77.50 0.00 z 4346.29
1996 7.00 84.50 81.00 269.00 771.50 831.50 877.50 779.50 536.00 324.50 82.50 30.00 4674.50
1997 26.50 13.50 115.50 145.50 439.00 684.50 865.00 829.00 690.00 301.50 40.00 2.00 4152.00
1998 6.50 9.00 112.00 173.50 689.00 878.50 1006.50 802.50 743.50 413.50 88.00 23.00 4945.50
1999 23.50 45.00 64.50 218.50 464.00 727.00 875.50 870.50 577.00 290.50 145.86 a 3.00 4304.86
2000 21.00 56.50 97.50 308.00 709.00 715.50 902.00 890.00 700.50 379.00 11.25 b 0.00 4790.25
2001 0.00 d 27.50 45.00 368.50 586.50 869.00 1031.00 888.00 637.00 339.00 162.50 14.00 4968.00
2002 19.00 19.00 84.50 374.00 583.50 833.50 913.00 925.50 655.50 276.50 40.00 13.00 4737.00
2003 13.00 29.00 137.50 337.00 604.00 688.50 969.00 943.00 568.00 441.00 120.50 24.50 4875.00
2004 4.50 8.00 192.50 273.00 647.00 755.50 833.00 749.50 589.00 320.50 28.00 9.50 4410.00
2005 35.00 34.00 31.50 247.00 520.00 808.50 863.50 801.50 718.00 342.50 132.00 20.50 4554.00
2006 45.00 26.50 143.00 401.50 692.00 847.00 912.00 850.00 496.00 304.00 117.00 14.00 4848.00
2007 5.50 32.00 179.50 188.00 444.50 685.00 817.00 885.50 685.50 412.50 136.50 32.00 4503.50
2008 17.50 22.50 115.50 243.00 543.00 888.50 827.50 805.00 516.00 315.50 102.00 19.00 4415.00
2009 27.00 73.00 191.50 275.50 541.00 815.00 904.50 871.00 576.00 276.50 133.00 0.00 4684.00
2010 5.00 1.50 77.50 279.00 493.50 893.50 812.00 896.50 735.00 389.00 83.50 48.50 4714.50
2011 2.00 66.50 f 188.00 401.00 576.50 1000.50 1059.50 1091.00 645.00 371.00 86.50 0.00 5421.00
2012 7.00 16.50 263.50 459.00 640.50 878.00 950.00 931.00 655.50 283.50 h 0.00 z 0.00 z 4801.00
Period of Record Statistics
MEAN 11.14 27.50 109.57 278.22 540.88 777.80 885.74 826.40 591.94 313.72 82.74 13.90 4427.49
S.D. 11.93 22.35 60.71 80.17 82.81 88.30 69.81 75.52 77.72 56.88 38.87 12.60 272.73
SKEW 0.93 1.47 0.72 0.31 0.82 0.43 0.38 0.76 -0.19 0.10 -0.10 0.94 0.25
MAX 45.00 95.50 263.50 459.00 771.50 1000.50 1059.50 1091.00 743.50 441.00 162.50 48.50 4968.00
MIN 0.00 1.50 20.50 145.50 424.00 641.00 753.00 675.00 364.50 181.00 11.25 0.00 3948.50
NO YRS 45 45 46 45 46 46 46 47 47 46 46 45 40