DRYDEN, TEXAS

Monthly Total Heating Degree Days

(412590)

Base Temperature = 65 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 199410
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 a 0.00 0.00 0.00 104.50 213.00 537.50 855.00
1967 557.50 389.50 112.50 8.28 a 4.00 0.00 0.00 0.00 7.00 65.00 220.50 613.00 1977.28
1968 550.50 488.50 315.00 66.50 2.50 0.00 0.00 0.00 1.50 27.50 328.50 557.00 2337.50
1969 452.00 368.00 380.50 18.50 1.00 0.00 0.00 0.00 0.00 103.50 359.00 399.50 2082.00
1970 619.00 391.00 332.50 63.00 22.50 1.00 0.00 0.00 44.00 150.00 349.50 371.50 2344.00
1971 420.50 378.50 208.00 87.00 5.00 0.00 0.00 0.00 27.00 26.00 233.50 448.00 1833.50
1972 415.00 360.50 80.00 19.50 2.00 0.00 0.00 0.00 0.00 66.00 391.00 568.00 1902.00
1973 668.00 501.00 142.50 118.00 22.73 a 0.00 0.00 0.00 1.00 27.00 162.50 478.29 c 2121.02
1974 533.00 386.50 82.50 35.00 1.50 0.00 0.00 0.00 31.50 37.00 334.00 558.50 1999.50
1975 515.50 411.00 225.50 81.00 0.50 0.00 0.00 0.00 24.50 57.00 273.62 a 491.50 2080.12
1976 584.72 b 245.50 171.03 b 29.50 39.50 0.00 0.00 0.00 3.50 206.50 461.50 594.00 2335.76
1977 684.50 384.50 222.74 d 44.50 0.00 0.00 0.00 0.00 0.00 42.00 212.59 a 389.50 1980.33
1978 701.00 569.50 235.50 18.50 3.00 0.00 0.00 0.00 17.50 95.07 a 237.50 g 597.50 2237.57
1979 809.00 488.50 232.50 24.00 15.00 0.00 0.00 0.00 0.00 47.50 398.50 550.00 2565.00
1980 520.50 491.50 227.00 66.50 3.50 0.00 0.00 0.00 a 0.00 122.97 a 417.50 550.50 2399.97
1981 547.00 428.00 291.50 45.00 6.00 0.00 0.00 a 0.00 a 5.00 105.00 255.50 492.00 2175.00
1982 588.50 493.50 176.50 60.50 5.00 0.00 0.00 0.00 0.00 115.00 372.00 607.50 2418.50
1983 625.00 440.00 233.00 133.00 0.00 3.50 0.00 0.00 4.50 38.00 187.00 743.50 2407.50
1984 677.35 a 398.00 222.50 42.00 2.00 0.00 0.00 0.00 32.50 87.50 373.00 424.50 2259.35
1985 738.50 546.50 199.00 56.50 0.00 0.00 0.00 0.00 1.00 32.50 k 147.00 614.50 2303.00
1986 513.50 300.50 120.50 2.00 1.00 0.00 z 0.00 0.00 j 0.00 a 70.00 313.50 0.00 z 1321.00
1987 455.50 f 412.00 339.93 b 134.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 885.93
1988 0.00 z 0.00 z 0.00 z 16.00 k 0.50 0.00 0.00 0.00 1.00 4.50 217.00 i 478.36 b 484.36
1989 456.22 a 507.23 b 0.00 z 0.00 v 0.00 a 0.00 b 0.00 0.00 4.50 82.50 246.00 725.50 2021.95
1990 475.91 d 320.00 229.40 a 59.48 a 16.00 i 0.00 0.00 0.00 5.00 89.00 210.50 557.50 1946.79
1991 619.50 326.50 138.50 16.50 0.00 0.00 0.00 0.00 27.50 31.00 435.00 513.64 b 2108.14
1992 586.00 333.50 147.50 80.00 6.50 0.00 0.00 0.00 0.00 b 2.50 353.50 497.19 e 2006.69
1993 512.00 331.00 186.00 46.50 0.00 0.00 0.00 0.00 a 3.50 106.50 315.50 h 0.00 z 1185.50
1994 0.00 z 0.00 z 0.00 z 0.00 z 7.00 0.00 0.00 0.00 6.50 60.00 0.00 z 0.00 z 73.50
Period of Record Statistics
MEAN 574.81 411.18 210.08 54.21 5.58 0.17 0.00 0.00 8.88 72.93 302.01 534.34 2175.43
S.D. 100.32 80.62 78.83 36.43 9.20 0.69 0.00 0.00 12.74 46.25 91.39 92.65 204.98
SKEW 0.40 0.12 0.33 0.75 2.41 4.41 0.00 0.00 1.39 0.80 -0.03 0.31 0.15
MAX 809.00 569.50 380.50 134.00 39.50 3.50 0.00 0.00 44.00 206.50 461.50 743.50 2565.00
MIN 415.00 245.50 80.00 2.00 0.00 0.00 0.00 0.00 0.00 2.50 147.00 371.50 1833.50
NO YRS 25 26 25 25 27 27 28 27 28 27 24 25 19