PENWELL, TEXAS

Monthly Total Heating Degree Days

(416932)

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
1955 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
1956 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
1957 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
1958 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
1959 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
1960 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
1961 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
1962 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
1963 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 x 0.00 y 6.00 s 105.50 s 740.00 740.00
1964 685.10 a 619.50 281.58 a 54.00 3.00 3.00 0.00 0.00 7.24 a 49.60 a 281.50 558.50 2543.02
1965 476.50 510.00 448.50 39.00 9.00 l 0.00 z 0.00 g 0.00 0.00 u 37.00 q 158.00 444.50 2076.50
1966 758.50 572.50 201.50 62.00 38.00 0.00 0.00 0.00 a 0.00 u 61.00 q 177.50 402.50 h 1810.00
1967 578.00 398.50 120.00 8.00 13.50 0.00 0.00 a 0.00 0.00 z 55.00 i 283.00 665.00 2066.00
1968 604.00 501.50 318.50 87.00 1.00 0.00 0.00 m 0.00 z 0.00 b 36.00 389.00 159.00 w 1937.00
1969 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 j 0.00 0.00 138.00 335.00 464.00 937.00
1970 614.50 412.00 361.00 74.50 37.50 3.50 0.00 0.00 37.50 166.00 343.00 371.48 a 2420.98
1971 405.50 422.50 243.00 87.00 4.00 0.00 0.00 0.00 z 0.00 z 0.00 z 153.50 q 558.60 e 1720.60
1972 504.00 f 506.29 e 153.85 d 45.00 e 6.56 e 0.00 d 0.00 f 0.00 d 11.54 d 108.00 g 425.00 f 560.50 f 723.24
1973 626.00 h 592.26 e 298.52 d 220.20 e 45.00 f 0.00 d 0.00 f 0.00 c 9.00 e 46.50 f 232.20 e 489.00 h 1352.18
1974 694.52 e 511.30 e 110.29 e 89.42 d 4.17 e 0.00 e 0.00 g 0.00 d 54.50 f 82.50 f 337.00 f 571.00 f 1409.71
1975 527.00 f 494.26 e 360.67 e 168.46 d 10.73 e 0.50 f 0.00 e 0.00 e 31.50 f 82.50 f 277.50 g 637.29 e 1671.41
1976 507.00 j 259.50 f 259.33 e 45.58 d 39.50 f 0.00 d 0.00 f 0.00 g 23.40 e 206.00 g 404.50 f 717.77 e 1046.07
1977 534.50 h 267.00 h 307.02 e 70.80 e 0.00 g 0.00 d 0.00 g 0.00 d 0.00 e 42.00 i 221.50 h 309.50 l 377.82
1978 570.50 i 526.00 f 173.50 f 42.60 e 13.00 g 0.00 d 0.00 f 0.00 d 34.20 e 80.00 f 262.00 f 454.00 i 76.80
1979 698.50 f 391.50 h 280.72 d 97.80 e 26.50 g 7.50 d 0.00 f 0.00 c 6.50 60.50 471.50 563.68 a 1488.21
1980 573.50 a 501.50 323.00 149.50 9.96 c 0.00 0.00 0.00 10.50 199.50 496.55 a 600.50 2864.52
1981 675.50 407.50 376.00 89.00 20.50 0.00 0.00 0.00 0.00 126.07 a 204.50 504.00 2403.07
1982 622.00 532.50 272.50 111.50 29.50 0.00 0.00 0.00 0.00 74.50 379.50 655.00 2677.00
1983 681.50 472.00 274.19 b 205.00 5.50 18.50 0.00 0.00 10.50 35.50 207.50 833.90 a 2744.09
1984 835.50 489.00 319.00 107.00 3.50 0.00 0.00 0.00 42.50 144.50 455.50 560.00 2956.50
1985 810.00 588.50 289.33 a 71.00 0.50 4.00 0.00 0.00 20.00 89.00 253.50 677.19 b 2803.02
1986 590.00 403.00 191.00 24.00 19.00 0.00 0.00 0.00 0.00 141.50 403.50 657.00 2429.00
1987 696.00 490.00 456.50 218.50 15.00 0.00 0.00 0.00 5.00 23.00 383.00 688.00 2975.00
1988 789.47 a 533.39 a 342.00 80.00 11.00 0.00 0.00 0.00 10.00 41.00 273.10 a 654.00 2733.96
1989 593.65 a 529.41 a 281.50 108.00 2.50 0.00 0.00 0.50 31.00 92.50 325.50 840.50 2805.06
1990 598.00 392.00 349.00 109.50 58.50 0.00 0.00 0.00 7.50 114.00 282.50 699.50 2610.50
1991 762.50 408.00 261.00 54.00 3.50 0.00 0.00 0.00 57.00 75.00 502.50 589.00 2712.50
1992 724.00 414.00 252.50 133.00 33.00 0.00 0.00 0.00 2.00 38.50 470.50 612.00 2679.50
1993 682.50 505.00 311.50 116.00 2.50 0.00 0.00 0.00 16.00 174.50 454.50 562.50 2825.00
1994 660.00 499.00 254.50 100.00 23.50 0.00 0.00 0.00 13.00 79.00 263.79 a 496.00 2388.79
1995 620.00 346.00 340.50 128.50 2.00 0.00 0.00 0.00 25.50 34.50 322.00 612.50 2431.50
1996 658.00 426.50 426.50 132.50 0.00 0.00 0.00 0.00 26.00 104.00 324.00 556.50 2654.00
1997 719.00 532.00 227.50 223.50 20.50 0.00 0.00 0.00 0.00 118.00 397.00 709.00 2946.50
1998 507.50 445.00 366.50 120.50 0.50 0.00 0.00 0.00 0.00 52.00 209.50 590.50 2292.00
1999 507.00 300.00 247.50 76.00 5.00 0.00 0.00 0.00 19.00 76.47 a 185.00 602.50 2018.47
2000 514.00 284.50 172.50 84.50 1.55 a 0.00 0.00 0.00 15.00 132.00 503.00 716.50 2423.55
2001 723.50 424.00 381.50 35.00 3.50 0.00 0.00 0.00 5.00 27.50 296.50 581.50 2478.00
2002 589.50 548.50 374.50 67.50 7.00 0.00 0.00 0.00 2.00 133.00 435.50 655.00 2812.50
2003 604.00 507.00 245.00 48.50 16.50 0.00 0.00 0.00 0.00 z 57.00 323.00 573.50 2374.50
2004 558.00 525.00 205.50 123.00 20.50 0.00 1.50 0.00 3.00 68.50 414.60 e 509.00 g 1919.60
2005 509.90 b 519.83 e 357.50 139.00 44.00 g 0.00 0.00 f 0.00 0.00 e 53.00 h 266.50 f 392.00 j 1526.22
2006 342.00 h 0.00 z 180.63 e 6.00 j 0.00 z 0.00 0.00 f 0.00 z 2.00 f 0.00 z 204.00 i 0.00 z 180.63
2007 412.50 n 0.00 z 229.73 c 181.50 42.50 0.00 z 0.00 0.00 0.00 z 0.00 z 342.50 0.00 z 796.23
2008 673.00 0.00 z 0.00 z 44.50 n 15.50 0.00 0.00 0.00 6.50 116.50 369.50 611.50 1792.50
2009 637.50 0.00 z 272.00 0.00 z 0.00 0.00 0.00 0.00 13.00 165.00 280.50 778.00 2146.00
2010 711.00 613.50 383.00 100.50 26.00 0.00 0.00 0.00 0.00 15.50 324.50 592.00 2766.00
2011 692.00 561.56 a 137.50 11.79 b 29.00 0.00 0.00 a 0.00 2.00 79.00 305.50 712.50 2530.84
2012 542.50 438.50 206.50 17.00 12.50 0.00 0.00 0.00 a 22.50 41.50 i 0.00 z 0.00 z 1239.50
Period of Record Statistics
MEAN 637.88 479.43 283.75 96.81 13.97 0.81 0.04 0.01 12.35 90.50 334.85 622.14 2626.85
S.D. 95.74 78.79 83.48 55.14 13.94 3.04 0.25 0.07 13.64 49.23 95.93 99.32 229.69
SKEW -0.13 -0.46 -0.06 0.67 1.23 4.82 5.83 6.48 1.36 0.36 0.08 -0.03 -0.55
MAX 835.50 619.50 456.50 223.50 58.50 18.50 1.50 0.50 57.00 199.50 503.00 840.50 2975.00
MIN 405.50 284.50 110.29 8.00 0.00 0.00 0.00 0.00 0.00 15.50 158.00 371.48 2018.47
NO YRS 39 40 46 45 40 45 37 45 40 34 39 38 27