SEATTLE SAND PT WSFO, WASHINGTON

Monthly Total Growing Degree Days

(457470)

Base Temperature = 40 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200601
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
1986 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 483.00 208.00 96.10 a 787.10
1987 96.50 177.50 268.50 389.00 539.50 678.00 763.00 818.00 698.50 521.50 293.50 79.00 5322.50
1988 79.50 165.00 200.00 332.00 496.50 604.50 783.50 799.50 639.50 516.50 221.50 106.50 4944.50
1989 78.00 0.00 z 0.00 z 396.50 494.00 671.00 754.00 777.00 685.50 428.00 235.50 128.00 4647.50
1990 102.00 87.00 228.50 360.50 474.00 613.50 0.00 z 884.00 716.50 358.00 220.50 58.00 4102.50
1991 66.50 198.50 127.50 0.00 z 435.00 550.00 802.00 825.50 673.00 397.00 226.00 129.50 4430.50
1992 139.00 190.50 295.00 385.00 579.50 734.50 797.00 826.50 585.50 431.00 182.00 36.00 5181.50
1993 57.00 85.50 234.00 324.50 671.50 664.50 712.50 816.50 694.50 524.00 155.17 a 101.00 5040.67
1994 152.50 65.00 240.50 360.50 541.50 610.00 841.00 852.50 736.50 395.50 96.00 78.00 4969.50
1995 151.50 150.00 206.00 323.00 624.50 673.00 834.50 705.00 708.50 409.00 283.50 115.50 5184.00
1996 95.50 124.00 207.00 348.50 400.50 590.50 836.50 817.50 574.00 376.00 0.00 z 60.00 4430.00
1997 106.50 97.50 165.00 304.50 585.00 613.00 778.00 891.50 707.00 0.00 z 290.00 89.50 4627.50
1998 143.50 165.00 232.00 332.00 484.00 622.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 112.50 2091.50
1999 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 795.50 632.00 399.50 239.00 105.50 2171.50
2000 50.00 122.50 156.50 343.50 437.50 638.00 778.00 760.50 639.50 416.50 114.50 75.00 4532.00
2001 97.00 64.50 188.50 270.50 475.00 563.00 740.00 806.00 628.50 369.42 a 230.69 a 77.00 4510.11
2002 87.50 83.50 113.50 265.50 423.50 653.50 778.00 807.00 636.00 374.00 247.00 126.00 4595.00
2003 180.50 84.00 235.50 292.00 479.00 683.00 873.00 839.50 693.00 480.50 123.00 100.00 5063.00
2004 96.62 a 143.00 253.50 402.50 551.50 700.50 887.00 893.50 603.50 444.00 189.50 112.00 5277.12
2005 146.50 92.00 288.00 352.00 592.00 619.00 810.50 848.00 0.00 z 463.00 124.50 102.00 4437.50
2006 143.00 0.00 z 0.00 z 302.00 506.00 678.33 c 540.00 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1629.33
Period of Record Statistics
MEAN 108.90 123.24 214.09 338.00 515.26 640.02 798.03 820.19 661.85 432.58 204.44 94.35 4965.44
S.D. 36.85 44.77 51.79 40.99 72.42 47.73 47.35 46.60 48.39 54.21 60.98 25.11 294.48
SKEW 0.22 0.28 -0.37 -0.13 0.41 -0.05 0.22 -0.46 -0.30 0.43 -0.31 -0.58 -0.53
MAX 180.50 198.50 295.00 402.50 671.50 734.50 887.00 893.50 736.50 524.00 293.50 129.50 5322.50
MIN 50.00 64.50 113.50 265.50 400.50 550.00 712.50 705.00 574.00 358.00 96.00 36.00 4510.11
NO YRS 19 17 17 18 19 19 16 18 17 18 18 20 11