PLAINS, TEXAS

Monthly Total Heating Degree Days

(417074)

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
1925 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
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 0.00 z 0.00 z 0.00 z 0.00
1938 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
1939 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
1940 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
1941 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
1942 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
1943 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
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 0.00 z 0.00 z 612.00 612.00
1947 0.00 z 718.00 565.50 267.41 a 0.00 z 0.52 a 0.00 m 0.00 3.50 15.50 h 0.00 z 452.50 m 1554.93
1948 986.50 722.00 592.50 116.50 33.58 a 0.00 0.00 b 0.00 a 36.60 e 210.28 a 609.83 a 647.50 3955.29
1949 1052.50 457.50 g 440.00 324.50 35.00 0.00 0.00 c 0.00 37.00 250.00 361.50 753.30 a 3253.80
1950 600.33 e 469.28 c 387.50 h 208.50 41.50 11.00 0.53 b 0.00 10.00 73.00 379.00 f 689.23 a 2103.37
1951 842.37 e 658.54 b 510.35 d 271.50 80.00 11.00 0.00 0.00 a 41.00 176.00 631.55 a 596.50 f 3222.31
1952 182.50 t 0.00 z 0.00 z 179.50 f 79.71 c 0.00 i 5.34 b 0.00 34.50 270.00 526.50 i 861.50 1251.06
1953 613.11 d 647.00 341.53 b 219.31 a 122.34 c 0.00 0.00 a 0.00 c 1.50 o 113.00 h 338.50 i 841.50 2784.79
1954 678.00 445.41 a 492.90 a 86.67 c 71.00 k 0.00 d 0.00 0.00 0.50 181.50 467.50 709.00 3061.47
1955 803.42 a 723.50 471.89 d 186.35 d 37.72 a 15.00 d 0.00 l 0.00 b 0.00 h 164.09 b 516.35 d 679.33 b 3597.63
1956 712.50 823.71 c 419.53 a 220.71 b 11.76 b 0.00 a 0.00 0.00 a 2.14 b 113.50 579.00 671.00 3553.86
1957 748.00 418.38 b 420.71 c 282.00 67.96 e 21.50 0.00 0.00 12.50 257.00 634.00 499.50 f 2862.06
1958 883.50 659.50 691.62 b 227.00 j 48.00 0.50 0.00 a 0.00 36.50 251.50 469.00 758.50 3798.62
1959 806.52 a 662.50 486.24 d 270.50 20.31 b 0.00 0.00 a 0.00 5.40 e 214.13 d 601.03 a 707.00 3773.63
1960 893.46 c 805.79 a 587.00 120.50 g 63.00 0.00 0.00 c 2.00 4.50 140.50 436.03 a 909.00 3841.28
1961 902.50 655.50 521.00 247.24 a 35.65 a 2.31 d 0.00 b 0.00 23.79 a 158.00 452.00 i 544.50 k 2545.99
1962 891.50 449.50 494.40 b 169.66 a 18.60 a 0.00 0.00 0.00 d 7.50 133.50 421.50 547.00 f 2586.15
1963 431.50 p 583.15 b 329.00 k 87.50 35.98 c 0.00 c 0.00 a 0.00 5.00 32.11 c 430.80 e 850.50 2025.04
1964 780.17 a 371.50 p 0.00 z 0.00 z 0.00 z 0.00 j 0.00 0.00 40.00 142.50 466.00 743.00 2171.67
1965 666.00 730.00 682.50 133.50 29.00 2.00 0.00 0.00 b 26.50 157.50 294.00 641.00 3362.00
1966 923.80 a 0.00 z 201.00 m 229.00 111.27 c 0.00 a 0.00 13.50 6.50 239.50 389.46 b 861.36 c 2774.39
1967 827.50 649.00 334.50 94.14 a 95.50 i 3.00 0.00 0.00 33.75 b 234.50 524.44 c 912.00 3612.83
1968 808.00 729.00 531.00 299.00 80.00 7.00 0.00 0.00 44.50 198.00 576.00 776.50 4049.00
1969 684.50 661.00 752.02 b 173.79 a 54.25 e 0.50 l 0.00 d 0.00 a 1.00 331.00 550.71 b 703.50 3911.77
1970 887.93 c 601.00 601.00 212.50 79.00 25.50 0.00 0.00 70.50 314.50 525.50 600.00 3917.43
1971 700.00 642.83 d 510.00 224.50 47.50 0.00 2.00 0.00 94.50 169.50 443.00 704.50 3538.33
1972 735.50 606.50 310.00 134.00 59.00 0.50 2.00 0.00 26.00 215.00 703.00 814.78 a 3606.28
1973 946.00 731.00 507.88 a 402.93 a 104.00 1.50 0.00 0.00 48.50 150.50 460.50 788.50 4141.31
1974 828.22 a 662.67 a 326.50 200.69 a 31.00 3.10 a 0.00 b 0.57 d 128.50 187.11 c 545.00 821.50 3734.86
1975 778.50 675.00 547.00 318.00 50.50 4.00 0.00 0.00 94.82 b 188.50 519.00 733.50 3908.82
1976 823.50 431.00 442.00 156.00 90.50 0.00 0.50 0.00 43.50 215.50 k 701.50 814.78 a 3503.28
1977 992.00 606.50 506.50 221.00 4.17 e 0.00 0.00 0.00 0.00 135.00 442.24 a 655.50 3562.91
1978 968.00 792.81 a 470.88 b 114.00 72.00 11.00 0.00 0.00 62.40 e 165.50 103.00 s 419.00 p 2656.59
1979 1009.00 693.78 a 516.50 223.97 a 88.00 20.50 0.00 0.00 26.00 105.00 f 664.00 748.13 a 3989.88
1980 815.30 a 655.61 a 576.50 303.10 a 0.00 z 0.00 z 0.00 0.00 15.52 a 225.50 600.00 648.00 3839.53
1981 0.00 z 231.50 o 244.50 n 148.00 47.05 c 9.31 a 0.00 0.00 0.00 z 141.00 f 393.00 e 661.00 1258.36
1982 748.00 i 712.50 321.50 0.00 z 93.50 0.00 0.00 0.00 0.00 278.50 512.59 a 621.50 i 1918.59
1983 885.00 522.50 308.50 255.00 46.00 6.00 0.00 0.00 0.00 d 167.50 419.50 988.50 3598.50
1984 885.00 670.50 0.00 z 320.00 37.00 5.00 0.00 0.00 87.50 261.00 441.50 668.00 3375.50
1985 0.00 z 659.00 422.24 b 120.00 45.50 3.50 0.00 0.00 57.93 a 215.00 489.50 744.50 2757.17
1986 0.00 z 0.00 z 229.50 46.50 k 25.00 4.00 0.00 1.50 1.50 222.54 c 548.00 795.50 1827.54
1987 826.00 0.00 z 545.50 h 0.00 z 67.00 8.50 0.00 a 3.50 24.00 178.00 499.50 848.37 a 2454.87
1988 927.42 a 669.50 514.50 288.50 55.28 a 0.00 0.00 8.00 8.50 109.03 b 0.00 z 774.00 3354.73
1989 640.67 a 671.48 a 379.00 163.50 31.00 a 6.50 0.00 1.00 82.50 154.50 485.00 953.50 3568.65
1990 756.50 569.50 485.50 215.50 124.00 0.00 0.00 0.00 12.50 202.00 412.50 835.50 3613.50
1991 885.50 540.50 418.50 181.50 28.50 0.00 0.00 0.00 30.50 u 162.50 633.50 744.50 3595.00
1992 821.00 509.50 349.50 175.50 46.50 3.50 0.00 0.00 18.00 121.00 614.00 733.00 3391.50
1993 798.50 658.50 462.50 212.00 48.50 0.00 0.00 0.00 20.50 240.00 608.00 701.00 3749.50
1994 759.50 645.50 430.00 219.00 50.00 0.00 0.00 0.00 14.00 141.00 431.00 601.50 3291.50
1995 750.00 458.00 464.50 241.50 30.00 0.00 0.00 0.00 50.50 149.50 425.00 699.50 3268.50
1996 762.00 533.00 544.00 232.50 2.00 0.00 0.00 0.00 41.00 192.00 467.50 680.00 3454.00
1997 848.50 688.50 387.50 343.00 60.00 2.00 0.00 4.00 11.50 201.00 556.50 836.50 3939.00
1998 0.00 z 585.50 526.50 265.00 0.00 2.00 0.00 0.00 0.00 128.00 227.50 p 0.00 z 1507.00
1999 532.96 e 444.00 415.00 204.00 51.50 0.50 0.50 0.00 38.50 173.50 338.00 726.50 2924.96
2000 649.00 415.00 355.50 135.00 33.50 0.00 0.00 0.00 z 36.00 185.50 688.00 896.50 3394.00
2001 838.00 556.00 547.50 128.50 22.00 0.00 0.00 0.00 0.00 145.50 434.00 712.00 3383.50
2002 697.00 682.50 325.50 l 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 1379.50
2003 0.00 z 0.00 z 0.00 z 162.50 21.50 1.00 0.00 0.00 6.00 72.50 425.50 671.50 1360.50
2004 700.00 701.00 312.00 153.00 e 41.00 0.00 2.50 0.00 17.00 117.36 c 562.00 722.50 3328.36
2005 716.00 583.50 515.50 244.00 113.50 0.00 4.50 0.00 7.50 196.50 345.00 g 789.50 3170.50
2006 626.50 608.00 410.00 97.00 23.00 0.00 0.00 e 0.00 h 34.00 148.50 h 306.00 k 416.00 m 1798.50
2007 629.00 i 413.00 i 222.00 h 127.00 o 56.50 k 0.00 m 0.00 o 0.00 g 1.00 m 105.00 h 273.00 k 395.00 m 0.00
2008 594.50 i 378.50 i 294.50 k 151.50 h 28.50 l 0.00 j 0.00 j 0.00 i 11.50 j 140.50 k 244.00 m 519.00 j 0.00
2009 509.00 k 288.00 j 280.00 g 238.50 37.50 0.00 2.00 0.00 31.00 256.50 436.00 918.50 1920.00
2010 857.50 731.00 495.00 205.00 86.50 0.00 0.00 0.00 2.00 114.50 514.00 667.50 3673.00
2011 828.50 706.00 308.00 90.50 63.50 0.00 0.00 a 0.00 18.50 140.50 470.50 902.50 3528.50
2012 694.00 644.50 301.50 71.00 54.50 0.00 0.00 0.00 32.50 102.00 i 0.00 z 0.00 z 1798.00
Period of Record Statistics
MEAN 801.35 626.82 463.28 205.50 52.00 3.25 0.33 0.56 28.40 182.23 507.06 757.92 3608.33
S.D. 113.25 101.11 108.16 73.91 29.55 5.73 1.01 2.09 28.01 59.06 95.15 94.79 277.31
SKEW -0.05 -0.54 0.21 0.22 0.63 2.27 3.60 4.83 1.41 0.14 0.22 0.46 -0.14
MAX 1052.50 823.71 752.02 402.93 124.00 25.50 5.34 13.50 128.50 331.00 703.00 988.50 4141.31
MIN 532.96 415.00 229.50 71.00 0.00 0.00 0.00 0.00 0.00 32.11 294.00 600.00 2924.96
NO YRS 54 55 53 56 58 59 61 61 59 56 52 54 26