LITTLEFIELD, TEXAS

Monthly Total Growing Degree Days

(415265)

Base Temperature = 40 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 1287.57 b 1040.57 a 876.43 b 553.87 a 382.00 130.00 4270.43
1967 146.50 110.25 d 491.50 723.50 812.41 b 1061.90 a 1134.00 1060.50 805.20 e 613.05 b 284.00 82.50 7325.31
1968 126.00 121.50 345.59 d 461.50 788.50 1063.00 1113.50 1094.50 843.50 679.00 235.00 82.67 a 6954.26
1969 177.50 104.00 145.00 606.00 873.17 a 1037.50 1299.50 1220.50 894.50 477.50 271.00 178.00 7284.17
1970 107.50 138.50 210.00 536.50 883.50 1059.50 1238.00 1184.00 913.00 478.00 270.00 a 186.50 7205.00
1971 138.50 123.93 a 317.50 534.00 816.00 1104.00 1198.50 985.00 832.50 623.50 312.00 141.00 7126.43
1972 129.50 196.50 459.50 686.00 784.50 1052.50 0.00 z 1053.50 908.00 613.00 123.50 78.50 6085.00
1973 63.00 81.00 265.00 383.00 763.00 1030.00 1146.00 1131.50 875.00 718.00 359.00 130.50 6945.00
1974 120.00 149.00 505.50 618.00 982.50 1088.00 1231.00 1031.78 a 661.00 585.00 255.50 75.00 7302.28
1975 89.00 74.15 a 244.00 492.50 796.50 1102.50 1063.00 1088.50 765.50 654.10 a 317.50 133.00 6820.25
1976 97.00 317.50 327.00 648.00 755.00 1059.00 1070.00 1138.00 848.79 a 423.50 189.50 75.50 6948.79
1977 21.50 147.00 281.50 550.00 917.00 1138.50 1215.50 1164.50 1004.00 664.00 323.50 161.00 7588.00
1978 37.00 41.00 338.50 697.50 857.00 1104.00 1250.50 1105.50 872.00 587.00 225.00 62.50 7177.50
1979 25.50 85.50 212.00 520.00 763.50 950.50 1163.00 1038.50 918.50 684.00 164.00 93.00 6618.00
1980 88.50 151.50 251.10 a 444.00 769.50 1234.00 1303.50 1203.00 936.50 558.52 a 263.57 b 217.00 7420.69
1981 69.50 174.50 257.30 a 603.50 817.50 1107.50 1216.00 1034.50 867.00 570.00 336.00 152.00 7205.30
1982 102.50 130.00 307.00 466.00 783.00 950.00 1196.50 1194.00 978.50 544.50 236.50 87.50 6976.00
1983 31.50 99.00 270.00 361.50 732.00 940.50 1216.00 1195.00 991.50 654.50 313.45 a 72.00 6876.95
1984 57.00 113.00 226.00 436.50 856.00 1044.00 1113.50 1084.50 804.50 503.50 257.50 137.50 6633.50
1985 34.00 108.50 354.00 614.50 865.50 985.00 1150.50 1208.00 899.00 545.50 251.50 52.50 7068.50
1986 0.00 z 237.50 367.00 615.50 822.50 976.50 1188.50 1086.50 875.00 533.50 211.50 42.00 6956.00
1987 76.00 129.50 197.00 445.50 811.50 1007.50 1165.00 1086.00 827.50 610.00 258.50 114.00 6728.00
1988 42.00 120.00 312.50 480.00 792.50 1016.50 1109.50 1111.50 850.00 615.00 320.50 75.00 6845.00
1989 119.00 117.00 427.00 632.00 917.00 941.50 1144.00 1079.50 785.00 635.00 263.50 57.00 7117.50
1990 92.50 145.50 273.50 524.00 781.50 1265.50 1108.50 1077.50 936.00 584.00 327.00 99.00 7214.50
1991 26.50 159.50 330.00 565.50 946.50 1068.50 1129.50 1105.00 752.50 607.50 151.00 86.50 6928.50
1992 34.00 186.00 367.50 567.00 752.00 950.00 1164.50 1078.00 874.00 635.00 171.72 a 90.50 6870.22
1993 48.50 92.50 281.50 0.00 z 830.50 1096.00 1239.00 1151.50 850.50 535.50 156.50 104.50 6386.50
1994 51.50 102.00 347.50 522.50 799.00 1195.00 1237.50 1138.50 904.00 596.50 275.00 111.60 a 7280.60
1995 120.50 208.50 340.00 478.00 789.00 1050.00 1223.50 1162.00 876.72 a 579.50 302.50 0.00 z 7130.22
1996 94.00 250.00 252.00 543.50 1081.50 1131.50 1187.50 1089.50 834.50 597.50 263.50 171.50 7496.50
1997 121.00 88.00 345.50 375.00 749.00 984.50 1175.00 1139.00 990.00 589.50 215.50 61.00 6833.00
1998 122.00 113.50 277.00 450.50 999.00 1178.50 1316.50 1112.50 1043.50 723.50 332.00 136.00 7804.50
1999 160.50 219.00 290.50 493.50 774.00 1027.00 1185.50 1180.50 877.00 579.50 413.79 a 81.50 7282.29
2000 145.00 251.00 357.50 572.50 1019.00 1015.50 1212.00 1200.00 999.00 659.00 89.46 b 33.50 7553.46
2001 20.09 d 161.50 228.50 662.50 896.50 1169.00 1341.00 1198.00 937.00 647.50 387.50 120.50 7769.59
2002 137.00 116.00 250.00 644.50 893.50 1133.50 1223.00 1235.50 955.50 556.50 215.50 106.00 7466.50
2003 124.50 133.50 371.50 629.50 914.00 988.50 1279.00 1253.00 868.00 749.00 326.00 144.00 7780.50
2004 119.50 97.50 452.50 536.00 957.00 1055.50 1143.00 1059.50 889.00 629.50 186.00 127.00 7252.00
2005 166.50 129.00 249.00 529.50 808.50 1108.50 1173.50 1111.50 1018.00 641.50 349.00 137.50 7422.00
2006 216.50 166.50 370.50 701.50 1002.00 1147.00 1222.00 1160.00 796.00 603.00 353.00 112.00 7850.00
2007 41.50 163.00 437.00 441.00 754.50 985.00 1127.00 1195.50 985.50 717.50 329.50 140.00 7317.00
2008 107.00 187.50 350.50 523.00 853.00 1188.50 1137.50 1115.00 816.00 606.50 333.00 160.50 7378.00
2009 148.50 234.00 426.50 549.00 851.00 1115.00 1214.50 1181.00 876.00 539.00 377.00 54.50 7566.00
2010 79.00 41.00 294.00 563.50 803.50 1193.50 1122.00 1206.50 1035.00 699.00 284.50 182.50 7504.00
2011 82.00 193.50 f 466.50 698.00 883.50 1300.50 1369.50 1401.00 945.00 664.00 286.50 47.00 8143.50
2012 150.00 130.50 503.50 759.00 950.50 1178.00 1260.00 1241.00 955.50 496.00 h 0.00 z 0.00 z 7128.00
Period of Record Statistics
MEAN 95.70 143.24 325.52 552.99 848.87 1077.79 1195.74 1136.40 890.35 605.73 272.82 109.41 7218.39
S.D. 48.14 57.07 86.56 96.47 83.68 88.32 69.81 75.52 79.39 68.30 73.72 43.54 325.54
SKEW 0.15 0.83 0.38 0.09 0.84 0.43 0.38 0.76 -0.23 -0.23 -0.41 0.34 0.08
MAX 216.50 317.50 505.50 759.00 1081.50 1300.50 1369.50 1401.00 1043.50 749.00 413.79 217.00 7850.00
MIN 20.09 41.00 145.00 361.50 732.00 940.50 1063.00 985.00 661.00 423.50 89.46 33.50 6618.00
NO YRS 45 45 46 45 46 46 46 47 47 46 46 45 40