TACOMA 1, WASHINGTON

Monthly Total Heating Degree Days

(458278)

Base Temperature = 65 F

File last updated on Jul 25, 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
1982 0.00 z 0.00 z 582.00 448.50 269.50 75.50 43.50 39.50 128.00 338.00 604.50 761.50 3290.50
1983 675.50 545.00 502.50 447.50 215.50 82.50 47.61 c 10.50 197.50 409.00 523.50 896.93 a 4553.54
1984 666.00 597.50 497.00 451.00 331.50 161.00 33.50 43.00 137.14 b 438.50 608.00 869.00 4833.14
1985 868.00 696.50 646.50 416.50 267.50 120.00 9.00 31.00 a 196.00 380.00 837.50 896.50 5365.00
1986 638.50 603.50 451.00 453.00 272.50 66.00 83.00 6.50 174.50 340.00 556.50 741.00 4386.00
1987 758.00 540.50 518.22 a 338.50 212.50 94.50 29.00 36.50 109.00 334.50 490.00 776.00 4237.22
1988 769.50 590.50 584.00 398.00 279.00 159.83 a 53.50 48.00 166.50 275.00 546.50 700.00 4570.33
1989 697.00 795.00 638.00 334.00 256.50 107.50 53.00 42.00 104.50 378.00 520.00 695.00 4620.50
1990 661.00 665.50 550.50 363.00 282.00 135.50 19.50 23.00 73.00 393.00 528.00 894.50 4588.50
1991 757.00 487.00 627.00 451.00 314.00 182.50 16.00 32.50 107.00 395.00 510.50 657.50 4537.00
1992 633.50 543.50 475.00 334.00 180.50 60.50 22.50 27.50 150.50 322.50 544.50 759.00 4053.50
1993 835.00 665.00 545.00 404.50 150.50 111.50 79.50 50.00 153.50 302.00 699.00 726.50 4722.00
1994 599.50 655.00 501.50 363.50 220.50 140.00 23.50 11.50 64.00 394.50 659.50 720.50 4353.50
1995 663.50 531.50 538.50 415.00 180.00 118.50 15.50 72.50 61.00 365.00 459.00 703.00 4123.00
1996 721.50 641.50 535.50 373.50 335.50 0.00 z 42.00 28.50 187.50 398.00 613.00 745.00 4621.50
1997 693.00 601.00 573.00 0.00 z 0.00 z 102.00 17.50 6.00 83.50 377.50 479.00 717.50 3650.00
1998 666.00 505.00 529.00 406.00 268.00 95.00 0.00 z 17.50 80.50 0.00 z 522.50 729.00 3818.50
1999 674.00 591.50 606.00 452.50 369.50 170.00 62.00 22.00 150.00 383.50 478.50 672.00 4631.50
2000 740.00 605.38 a 0.00 z 391.50 267.50 115.50 36.50 0.00 z 147.50 0.00 z 48.00 z 397.00 m 2303.88
2001 678.00 652.00 530.00 427.00 243.50 149.50 27.50 22.00 114.00 377.00 505.50 698.00 4424.00
2002 0.00 z 601.00 638.00 436.50 284.00 86.00 33.50 27.50 118.00 398.00 511.00 641.00 3774.50
2003 588.00 600.50 480.00 400.50 247.00 75.00 13.50 12.50 65.50 229.50 640.00 689.75 a 4041.75
2004 727.50 529.00 429.00 258.00 141.00 53.00 1.00 0.00 104.00 279.00 506.00 584.00 3611.50
2005 612.00 585.50 419.50 336.00 136.00 75.50 3.50 4.00 y 97.00 j 238.00 574.00 711.81 e 3691.81
2006 564.00 598.00 508.18 c 361.50 188.50 g 126.92 d 44.50 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2158.60
Period of Record Statistics
MEAN 690.70 601.10 537.70 394.21 248.87 110.99 33.29 27.73 124.90 352.07 561.59 738.48 4450.12
S.D. 74.71 67.56 64.72 50.61 62.24 36.49 22.21 17.29 42.91 56.68 86.52 82.17 384.48
SKEW 0.57 0.77 0.06 -0.76 -0.19 0.29 0.69 0.59 0.13 -0.80 1.57 0.69 0.10
MAX 868.00 795.00 646.50 453.00 369.50 182.50 83.00 72.50 197.50 438.50 837.50 896.93 5365.00
MIN 564.00 487.00 419.50 258.00 136.00 53.00 1.00 0.00 61.00 229.50 459.00 584.00 3611.50
NO YRS 23 24 24 24 23 24 23 22 23 22 23 23 17