WILLOW CREEK 1 NW, CALIFORNIA

Monthly Total Heating Degree Days

(049694)

Base Temperature = 65 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1968 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 748.00 748.00
1969 810.50 650.00 509.00 382.50 97.00 31.00 0.00 7.50 16.50 303.50 446.00 566.50 3820.00
1970 571.00 409.00 395.00 421.00 162.50 57.50 1.00 3.00 48.00 246.89 c 244.00 l 500.00 j 2314.89
1971 468.00 k 354.50 k 436.50 i 405.00 177.00 78.50 8.50 8.00 85.34 a 319.82 a 519.44 c 763.50 2365.11
1972 734.00 534.83 c 340.50 361.67 c 129.50 40.00 0.00 11.50 83.00 210.50 327.50 i 398.00 p 2445.49
1973 697.50 a 481.50 520.50 286.50 112.50 35.69 a 3.50 18.50 26.50 241.59 b 476.50 569.88 a 3470.66
1974 671.00 556.00 451.50 324.00 194.00 15.50 18.50 5.50 2.00 269.00 315.00 k 463.50 k 2507.00
1975 504.50 k 424.50 j 677.23 e 539.00 205.50 56.50 21.00 23.50 10.50 347.95 b 641.79 b 714.00 3236.96
1976 756.92 a 664.50 588.50 494.00 212.00 130.50 19.50 28.00 8.50 188.14 b 385.20 e 760.50 4236.25
1977 775.50 473.76 c 578.50 261.67 c 302.00 13.00 9.00 0.00 60.00 135.50 j 391.50 f 370.00 j 2473.43
1978 295.00 n 276.00 k 213.50 g 199.00 m 125.50 i 31.00 8.50 12.00 70.18 b 47.00 i 302.50 l 484.00 k 121.68
1979 504.00 i 356.50 j 271.50 k 218.50 l 88.00 m 44.48 a 14.47 a 12.92 a 13.50 131.50 g 296.50 m 386.50 m 85.37
1980 691.00 473.50 538.50 326.50 0.00 z 0.00 z 38.00 0.00 z 0.00 z 224.50 469.29 b 613.05 b 3374.34
1981 557.48 a 480.67 a 476.50 291.96 b 186.50 50.00 12.00 8.00 94.50 381.82 a 423.21 b 545.82 c 3508.47
1982 790.00 516.50 550.00 410.50 142.00 62.00 26.00 5.00 65.00 252.00 555.54 b 696.00 4070.54
1983 670.00 506.80 c 462.50 406.50 158.00 37.00 17.50 5.50 29.50 159.00 492.50 637.50 3582.30
1984 401.00 j 376.00 i 260.00 i 388.00 197.00 72.00 0.00 8.00 58.00 340.00 574.50 740.00 2377.50
1985 492.00 i 352.50 i 392.50 k 216.50 161.00 30.00 0.00 2.50 63.00 259.50 478.00 f 706.50 1439.00
1986 350.50 k 281.50 i 178.00 k 194.00 i 183.50 17.59 a 1.50 0.00 153.00 155.50 457.00 633.50 1601.59
1987 458.00 k 488.00 291.50 j 93.00 i 98.00 24.50 15.50 0.00 47.59 a 90.00 439.00 672.70 a 1875.29
1988 411.50 l 327.50 i 409.00 158.50 i 197.88 a 92.00 6.50 0.00 25.50 82.00 467.50 755.50 2035.88
1989 459.50 k 446.50 i 451.50 140.50 150.50 27.00 6.50 8.00 31.50 233.00 434.50 441.00 k 1483.00
1990 455.00 j 447.00 i 382.00 100.00 i 193.00 50.50 1.50 3.50 3.00 201.00 526.00 838.00 2198.50
1991 475.00 j 227.00 k 383.50 j 330.00 203.00 39.50 0.00 0.00 0.50 141.50 263.00 k 698.00 1412.50
1992 429.50 j 258.00 k 216.50 i 200.17 a 35.00 38.00 3.00 0.00 18.00 138.00 303.00 j 732.63 a 1164.81
1993 424.50 l 351.50 j 321.00 337.00 134.50 89.50 3.00 0.50 26.00 109.50 j 587.00 408.50 m 1498.50
1994 361.00 l 380.50 i 285.50 i 186.50 j 90.50 f 55.00 0.00 0.00 19.00 259.00 646.50 687.00 1666.50
1995 350.00 k 243.00 i 467.50 207.50 j 158.00 87.50 0.00 9.00 13.00 185.00 323.50 285.00 l 1243.50
1996 586.00 444.00 411.00 270.50 164.00 13.50 3.50 0.00 36.21 a 235.00 409.00 623.50 3196.21
1997 627.00 491.00 406.50 313.00 68.00 37.00 9.50 2.00 29.50 260.50 405.00 722.50 3371.50
1998 420.00 j 384.50 i 480.50 371.00 308.45 a 24.00 0.50 0.00 6.00 260.00 470.50 785.50 2706.45
1999 665.35 d 623.00 b 536.00 359.00 256.04 d 86.90 a 9.30 a 6.50 25.20 e 275.90 a 293.50 g 545.00 g 2843.19
2000 415.50 k 349.00 i 357.50 h 167.50 j 131.50 i 37.00 h 6.50 j 1.72 d 39.00 e 231.00 f 485.00 f 517.50 h 40.72
2001 517.00 j 427.50 i 284.00 i 296.50 i 62.00 j 59.50 h 8.35 e 1.72 d 39.60 e 200.31 e 333.50 i 449.00 k 249.98
2002 502.00 j 273.00 k 299.50 l 159.00 j 157.00 j 16.50 l 0.00 k 7.50 n 31.00 m 157.50 l 287.50 l 234.00 r 0.00
2003 308.50 k 311.50 k 272.50 k 221.50 o 96.50 r 0.00 z 1.00 i 0.00 j 15.00 p 106.50 i 241.50 p 377.50 l 0.00
2004 413.50 k 299.00 l 205.50 i 167.00 i 85.50 j 30.00 g 0.00 k 0.00 z 0.00 z 0.00 z 340.00 j 395.50 l 0.00
2005 383.00 m 279.00 k 296.50 g 205.50 k 112.00 o 36.50 n 0.00 k 2.00 l 13.50 l 121.50 q 377.00 i 479.50 h 0.00
2006 349.00 n 270.50 m 383.50 l 177.00 m 43.50 p 15.50 p 0.00 u 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 685.95 519.54 473.96 340.72 169.87 48.91 8.32 6.01 38.96 230.75 483.31 691.37 3656.99
S.D. 81.31 74.34 87.30 90.80 61.46 28.13 9.11 7.01 33.09 73.26 82.69 76.34 356.43
SKEW -0.09 0.77 0.31 -0.05 0.21 0.97 1.37 1.55 1.45 -0.09 0.39 -0.29 0.47
MAX 810.50 664.50 677.23 539.00 308.45 130.50 38.00 28.00 153.00 381.82 646.50 838.00 4236.25
MIN 557.48 409.00 321.00 140.50 35.00 13.00 0.00 0.00 0.50 82.00 323.50 545.82 3196.21
NO YRS 14 15 21 23 27 30 32 32 32 28 21 22 8