LEVELLAND, TEXAS

Monthly Total Growing Degree Days

(415183)

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
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 662.50 263.00 74.00 999.50
1938 79.00 0.00 z 431.50 579.50 891.00 1072.00 1152.00 1177.00 953.00 694.00 271.00 118.50 7418.50
1939 89.00 42.50 404.50 610.50 862.50 1111.50 1166.50 1085.00 925.00 624.00 195.00 0.00 z 7116.00
1940 0.00 z 177.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 177.50
1941 0.00 z 0.00 z 243.00 561.50 829.00 950.69 a 1118.50 1133.00 873.10 a 670.00 337.76 a 148.28 a 6864.83
1942 105.50 137.50 340.00 570.00 849.00 1032.50 1117.00 1063.50 799.50 582.50 488.50 68.50 7154.00
1943 52.50 97.00 182.00 549.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 880.50
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 804.00 230.50 223.00 1257.50
1947 113.67 a 77.50 234.00 516.00 809.00 1067.50 1180.00 0.00 z 0.00 z 741.50 145.00 138.00 5022.17
1948 70.00 140.00 304.00 741.00 928.50 1155.50 1206.00 1188.50 946.00 643.50 233.50 204.50 7761.00
1949 46.00 167.50 373.50 410.50 g 881.00 1075.00 1209.00 1118.50 898.00 592.50 432.50 103.33 d 6896.83
1950 229.00 257.50 317.50 594.50 864.00 1136.00 1151.00 1198.00 883.00 764.50 355.50 174.00 7924.50
1951 103.50 262.50 285.50 519.50 948.50 1228.00 1311.50 1249.00 951.50 717.00 229.00 196.00 8001.50
1952 241.50 194.71 a 291.00 550.50 898.50 1207.00 1200.50 1311.76 d 922.50 574.00 261.50 99.00 7752.47
1953 290.88 a 195.50 461.50 518.33 c 738.50 f 1323.00 1264.50 1200.50 959.00 691.50 293.00 64.00 7261.72
1954 140.50 302.00 333.00 730.00 770.50 1112.50 1318.00 1245.50 1108.00 680.21 e 286.20 e 86.50 p 8026.41
1955 119.50 138.78 e 217.00 q 0.00 z 638.00 i 1070.50 1130.00 1165.50 926.38 a 642.50 260.56 c 213.00 5666.72
1956 157.00 f 167.00 448.00 575.50 1039.00 1213.50 1234.00 1136.00 785.50 h 732.08 e 219.00 h 199.12 e 6744.19
1957 190.50 293.48 a 351.50 473.00 778.00 1122.12 d 1256.50 1208.00 883.00 575.00 207.32 b 176.50 7514.92
1958 35.50 123.50 162.50 483.00 921.50 1179.00 1282.00 1224.50 893.00 634.95 c 303.33 c 113.50 g 7242.78
1959 125.00 147.30 e 263.50 g 649.44 c 945.50 691.50 k 1191.36 b 1221.00 991.50 568.50 186.00 h 125.79 e 5965.40
1960 102.50 93.38 d 257.00 j 692.68 b 898.50 1206.50 1175.50 900.50 h 958.00 675.69 d 209.00 l 75.50 5878.24
1961 30.50 162.00 350.41 c 655.00 c 993.50 1097.88 d 1115.00 1106.00 908.50 655.00 90.00 l 93.57 d 7167.37
1962 72.00 251.00 f 312.50 648.46 d 1055.50 1014.60 e 1201.00 0.00 z 0.00 z 761.50 397.50 d 179.50 g 5463.06
1963 91.00 222.00 413.00 0.00 z 991.50 1070.00 1227.00 1170.00 947.50 754.00 286.00 75.50 7247.50
1964 122.50 44.66 d 321.50 597.50 784.00 f 1074.64 b 1233.36 c 1186.00 872.00 627.50 288.62 a 153.50 6521.78
1965 157.77 c 86.00 172.00 650.00 894.50 1069.00 1193.50 1118.50 894.00 606.00 439.50 166.00 7446.77
1966 41.50 58.50 359.50 524.00 807.00 1060.50 1257.50 1052.50 872.00 513.50 361.03 a 127.32 c 7034.86
1967 134.50 101.00 476.50 703.50 787.00 1051.50 1119.00 1064.00 836.50 611.00 287.59 a 85.50 7257.59
1968 125.50 102.00 310.50 471.11 c 820.43 b 1067.07 a 1098.50 1077.50 816.50 679.42 a 234.00 98.17 a 6900.69
1969 217.50 115.11 a 118.00 602.50 843.50 1046.00 1267.00 1212.00 871.00 496.00 260.00 171.50 7220.11
1970 98.00 140.00 206.00 511.00 851.50 1020.00 1200.50 1160.00 878.50 493.50 256.00 173.00 6988.00
1971 166.00 135.00 311.00 541.50 828.73 a 1119.50 1161.50 965.50 840.50 610.00 296.00 148.00 7123.23
1972 135.50 182.00 453.50 698.00 817.00 1044.00 1071.00 1040.00 896.00 584.00 122.50 69.00 7112.50
1973 68.50 68.50 279.00 397.50 789.00 1006.00 1136.50 1090.50 857.50 672.50 343.50 126.00 6835.00
1974 111.50 131.50 507.50 627.00 961.50 1057.00 1169.00 1019.00 660.00 589.50 244.50 70.00 7148.00
1975 95.50 85.00 262.50 470.50 798.00 1082.50 1038.50 1043.00 751.00 588.00 278.50 134.00 6627.00
1976 81.50 311.50 313.00 643.00 748.00 1043.50 1044.50 1108.00 843.00 402.50 190.00 60.00 6788.50
1977 27.50 123.50 281.00 532.50 922.00 1120.00 1198.00 1169.00 1033.50 650.00 314.50 166.50 7538.00
1978 42.50 38.50 332.50 702.00 871.50 1092.50 1240.00 1118.07 a 892.00 615.50 269.00 91.50 7305.57
1979 41.00 108.00 275.50 562.50 776.50 976.50 1167.00 1029.50 902.50 677.50 157.50 127.50 6801.50
1980 109.00 166.00 280.50 487.00 798.00 1212.00 1256.00 1173.00 941.00 564.50 258.50 207.50 7453.00
1981 71.50 185.50 284.50 648.00 837.00 1121.50 1183.50 1036.50 856.00 577.00 351.50 176.50 7329.00
1982 109.50 148.50 356.50 516.50 810.00 996.50 1193.00 0.00 z 959.50 582.50 258.50 91.00 6022.00
1983 40.00 124.00 306.50 425.00 792.50 984.00 1190.00 1166.00 960.50 676.50 345.00 81.50 7091.50
1984 67.00 139.00 275.00 493.00 878.50 1052.00 1129.50 1085.00 785.00 515.50 262.50 162.00 6844.00
1985 44.00 130.50 377.00 649.00 878.50 995.00 1156.50 1218.00 900.00 593.50 292.00 89.50 7323.50
1986 150.00 276.00 415.50 684.00 849.00 1013.50 1197.50 1117.50 895.00 577.50 233.50 64.50 7473.50
1987 96.00 164.00 234.00 491.00 840.50 1035.50 1175.50 1137.00 850.50 633.50 283.00 143.50 7084.00
1988 62.50 151.00 323.00 519.00 822.50 1049.50 1147.00 1160.50 877.50 659.50 350.00 102.50 7224.50
1989 147.50 136.50 447.00 653.50 972.50 994.00 1194.00 1107.50 801.00 679.00 300.00 76.50 7509.00
1990 130.00 182.50 326.00 587.00 831.00 1280.00 1123.50 1098.50 977.50 613.00 374.00 123.00 7646.00
1991 41.50 200.50 377.00 618.00 1013.00 1105.50 1133.50 1134.50 796.50 658.00 183.00 106.50 7367.50
1992 59.50 211.50 417.00 605.50 796.00 1009.50 1204.00 1083.50 919.00 682.50 210.50 125.00 7323.50
1993 76.00 115.50 313.00 544.50 868.50 1128.00 1259.00 1195.50 879.50 580.50 187.00 128.00 7275.00
1994 80.50 128.50 387.50 555.00 871.00 1236.50 1264.00 1169.50 952.00 671.00 314.50 162.00 7792.00
1995 134.00 251.00 357.50 544.00 852.50 1079.00 1285.50 1187.00 891.00 628.50 332.00 165.00 7707.00
1996 117.50 289.50 290.50 579.00 1097.00 1143.50 1208.00 1140.00 885.00 630.50 299.00 205.50 7885.00
1997 142.50 104.00 401.00 418.00 822.50 1008.00 1229.00 1154.00 1019.50 641.50 241.50 76.50 7258.00
1998 131.00 139.50 273.50 499.50 1034.00 1226.50 1352.00 1152.50 1082.50 733.50 348.00 159.00 8131.50
1999 193.50 257.50 309.00 563.00 809.50 1028.50 1206.00 1261.50 874.00 608.00 422.00 107.50 7640.00
2000 165.00 291.50 391.00 626.00 1018.00 1036.50 1253.50 1216.00 1016.00 670.50 125.50 51.50 7861.00
2001 31.00 168.50 241.00 662.50 938.50 1168.00 1334.50 1180.50 921.00 628.00 396.50 132.00 7802.00
2002 130.00 109.00 282.50 628.50 900.50 1135.00 1169.50 1215.00 931.50 553.00 234.50 94.00 7383.00
2003 132.00 147.50 370.00 648.50 927.50 1023.00 1240.00 1205.50 853.50 727.50 320.00 129.50 7724.50
2004 112.50 105.00 463.00 558.00 0.00 z 1073.00 1146.00 1065.50 858.50 645.00 205.00 119.50 6351.00
2005 175.00 153.50 302.50 557.50 833.00 1135.50 1159.50 1097.50 1004.50 635.00 341.00 132.50 7527.00
2006 206.50 165.50 394.00 721.00 1007.50 1178.50 1242.50 1167.50 810.50 610.00 361.50 115.00 7980.00
2007 41.00 161.50 458.00 471.50 792.00 1010.50 1136.00 1190.50 978.00 744.00 328.00 138.50 7449.50
2008 89.50 186.50 358.50 548.00 874.00 1187.50 1149.50 1107.50 827.50 620.50 310.50 150.50 7410.00
2009 146.00 242.00 432.00 554.00 882.50 1133.50 1198.00 1195.00 855.00 532.50 347.00 54.50 7572.00
2010 66.50 47.50 303.00 569.00 840.00 1196.00 1112.50 1194.50 1004.00 664.00 282.50 164.50 7444.00
2011 58.50 183.00 461.50 695.00 868.00 1280.00 1338.50 1344.50 922.00 661.00 278.50 48.00 8138.50
2012 134.00 137.00 500.50 759.00 971.50 1189.00 1231.00 1208.50 926.00 497.00 h 0.00 z 0.00 z 7056.50
Period of Record Statistics
MEAN 108.48 156.94 337.17 581.32 878.75 1098.84 1194.29 1148.79 902.29 634.57 286.51 125.68 7409.50
S.D. 55.62 66.39 83.86 82.19 79.33 82.16 66.16 70.92 74.89 70.65 74.04 45.25 364.01
SKEW 0.82 0.54 -0.12 0.08 0.76 0.60 0.15 0.00 -0.03 -0.31 0.14 0.22 0.01
MAX 290.88 311.50 507.50 759.00 1097.00 1323.00 1352.00 1344.50 1108.00 804.00 488.50 223.00 8138.50
MIN 27.50 38.50 118.00 397.50 748.00 950.69 1038.50 965.50 660.00 402.50 122.50 48.00 6627.00
NO YRS 69 69 68 68 66 69 70 66 67 71 67 67 51