WINTHROP 1 WSW, WASHINGTON

Monthly Total Growing Degree Days

(459376)

Base Temperature = 40 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
1931 0.00 k 0.00 f 29.00 g 124.50 n 520.59 b 672.78 c 940.00 886.00 389.50 i 201.50 i 6.50 0.00 e 3025.86
1932 0.00 f 3.76 b 35.50 h 281.00 333.50 g 766.03 a 791.00 859.50 566.54 d 123.50 h 3.10 a 1.60 b 3272.54
1933 0.00 e 0.00 15.50 a 235.71 b 242.00 f 611.11 c 877.50 660.50 i 249.50 i 244.56 d 24.00 e 0.00 f 2008.38
1934 0.00 0.00 k 45.50 f 426.00 521.50 709.50 868.00 b 886.71 b 307.50 f 247.00 24.50 0.00 3683.21
1935 0.00 a 0.00 b 1.50 173.00 440.50 527.00 f 644.00 f 776.00 602.00 228.00 0.00 a 0.00 2221.00
1936 0.00 a 0.00 1.00 327.41 a 592.00 655.50 887.00 887.00 492.50 295.50 0.00 0.00 a 4137.91
1937 0.00 a 0.00 b 10.50 103.00 413.50 642.00 947.00 734.50 604.00 284.00 32.50 0.00 a 3771.00
1938 0.00 z 0.00 q 0.00 z 0.00 z 455.00 737.00 975.50 778.00 703.00 265.00 14.00 0.00 a 3927.50
1939 0.00 0.00 a 23.85 e 294.64 b 491.50 597.00 908.00 896.50 589.50 253.00 5.00 0.00 a 4058.99
1940 0.00 a 0.00 94.50 293.00 522.50 748.50 903.00 855.00 685.50 316.50 7.50 0.00 a 4426.00
1941 0.00 0.00 127.50 355.50 446.00 657.50 952.50 797.50 421.00 218.00 21.00 0.50 3997.00
1942 0.00 a 0.00 25.00 285.00 397.00 565.00 869.50 903.00 628.00 282.50 2.50 0.00 a 3957.50
1943 0.00 0.00 5.50 283.50 351.91 d 551.00 868.50 585.00 h 625.00 277.50 3.00 1.50 2967.41
1944 0.00 b 0.00 36.00 246.00 459.50 669.50 875.00 784.50 617.00 374.50 34.50 0.00 4096.50
1945 0.00 d 0.00 31.00 91.00 i 470.17 a 605.50 901.07 a 870.00 507.50 317.75 a 10.00 0.00 a 3712.98
1946 0.00 0.00 17.50 f 233.50 534.50 535.00 817.00 820.00 509.00 153.50 0.00 a 0.00 3602.50
1947 0.00 2.00 75.50 284.46 b 580.00 621.50 835.40 b 0.00 z 545.50 253.50 17.00 0.00 3214.86
1948 0.00 0.00 13.50 129.00 391.63 a 748.45 a 761.57 a 712.48 a 516.60 e 162.48 b 0.00 0.00 3435.71
1949 0.00 0.00 7.23 a 268.50 575.00 623.50 849.92 a 808.50 586.00 130.00 45.00 a 0.00 3893.65
1950 0.00 0.00 3.00 115.50 413.50 645.52 a 872.13 a 863.35 a 602.68 b 159.00 0.00 0.00 a 3674.68
1951 0.00 a 0.00 2.50 215.50 473.50 642.50 894.35 a 838.00 587.00 230.43 a 0.00 0.50 3884.28
1952 0.00 0.00 30.00 286.00 483.50 620.50 871.00 851.50 649.50 366.00 7.00 0.00 4165.00
1953 0.50 0.00 a 45.50 196.50 421.50 519.50 825.00 807.50 573.00 280.00 30.00 0.00 3699.00
1954 0.00 1.04 a 2.87 d 103.50 454.67 a 482.59 a 756.50 722.00 492.00 136.40 a 52.00 0.00 3203.56
1955 0.00 0.00 0.00 75.50 335.00 644.00 788.36 b 794.50 551.50 164.00 4.66 a 0.00 a 3357.52
1956 0.00 0.00 1.03 a 223.50 535.00 551.00 908.00 843.00 523.97 a 185.50 1.50 0.00 3772.50
1957 0.00 0.00 11.00 l 248.00 622.00 674.00 795.50 684.50 648.50 190.00 8.50 0.00 3871.00
1958 0.00 3.00 41.00 187.50 642.50 790.50 980.00 962.50 504.50 233.00 7.00 0.00 4351.50
1959 0.00 0.00 3.50 205.00 407.50 615.50 865.00 702.31 b 459.50 193.00 11.50 0.00 3462.81
1960 0.00 0.00 36.50 187.00 368.00 615.50 971.00 762.50 516.00 250.00 2.50 0.00 3709.00
1961 0.00 0.00 39.50 201.00 454.50 751.50 938.00 953.50 464.50 141.00 0.00 0.00 3943.50
1962 0.00 a 0.00 11.50 272.50 378.00 594.00 808.00 746.50 563.00 207.00 17.50 0.00 3598.00
1963 0.00 2.00 46.00 163.39 b 441.00 662.00 782.50 851.00 677.50 289.00 7.00 0.00 3921.39
1964 0.00 0.00 a 13.50 168.50 406.00 606.00 0.00 z 232.50 t 470.00 212.50 6.50 0.00 1883.00
1965 0.00 0.00 6.00 227.00 362.00 652.50 850.50 817.00 395.50 235.00 31.00 0.00 3576.50
1966 0.00 0.00 15.00 162.50 481.50 536.50 486.50 i 576.50 h 664.00 161.00 1.50 0.00 2022.00
1967 0.00 1.00 9.50 78.00 409.50 688.00 832.00 905.00 687.00 189.00 13.00 0.50 3812.50
1968 0.00 1.81 e 0.00 z 116.50 384.29 b 567.86 b 868.50 681.00 515.50 112.50 0.00 0.00 b 3247.96
1969 0.00 a 0.00 6.09 c 160.00 525.00 788.50 772.93 a 730.50 519.81 d 135.22 b 9.64 b 0.00 a 3647.70
1970 0.00 0.00 0.00 z 100.00 449.00 775.50 934.65 a 834.50 429.50 167.00 10.50 0.00 c 3700.65
1971 1.00 0.00 0.00 a 149.50 535.00 0.00 z 878.52 c 930.52 a 369.81 d 204.82 c 0.00 a 0.00 c 3069.16
1972 0.00 0.00 f 17.00 87.50 500.50 0.00 z 735.39 d 827.38 b 360.00 a 193.15 e 3.62 a 0.00 z 2724.54
1973 0.00 b 0.00 31.00 0.00 z 0.00 z 0.00 z 896.50 853.00 585.00 168.43 a 0.00 0.00 2533.93
1974 0.00 a 0.00 24.59 b 0.00 z 337.00 705.00 773.00 845.50 594.00 236.00 0.00 z 0.00 3515.09
1975 0.00 0.00 0.50 144.50 432.00 601.50 959.50 742.00 573.50 194.50 19.00 0.00 3667.00
1976 0.00 a 0.00 13.50 188.00 449.00 533.50 825.50 748.50 621.50 227.50 15.00 0.00 c 3622.00
1977 0.00 b 5.50 28.00 289.00 382.50 772.00 849.00 974.00 479.00 175.00 2.68 b 0.00 a 3956.68
1978 0.00 0.00 74.00 209.00 411.50 707.50 906.50 788.50 473.00 215.00 3.62 a 0.00 3788.62
1979 0.00 0.00 31.00 b 155.50 480.50 690.00 918.00 678.00 g 586.00 295.57 b 5.17 a 0.00 d 3161.74
1980 0.00 0.00 14.50 265.50 476.22 b 547.50 810.00 745.50 527.50 233.00 33.50 0.00 3653.22
1981 0.00 0.50 86.50 185.00 412.50 500.50 776.50 908.00 545.00 156.50 21.00 0.00 3592.00
1982 0.00 0.00 6.50 101.50 392.00 0.00 z 772.50 780.50 518.00 184.50 0.50 0.00 2756.00
1983 0.00 0.00 32.00 194.00 487.00 612.50 697.50 842.50 424.00 178.50 22.50 0.00 3490.50
1984 0.00 0.00 45.00 114.50 322.00 577.00 854.00 841.50 392.50 165.00 0.00 0.00 3311.50
1985 0.00 0.00 7.00 201.00 497.00 641.50 979.00 779.00 413.50 168.50 4.50 0.00 3691.00
1986 0.00 2.50 63.50 178.00 494.50 790.50 776.50 990.00 481.50 292.00 14.50 0.00 4083.50
1987 0.00 a 0.00 53.22 a 345.00 535.00 756.50 851.50 834.50 683.00 313.50 60.50 0.00 4432.72
1988 0.00 0.00 37.00 298.00 470.00 643.50 865.50 843.50 583.50 362.50 22.00 0.00 4125.50
1989 3.50 0.00 16.00 294.00 441.50 747.50 847.50 768.50 593.00 235.00 43.00 0.00 3989.50
1990 0.00 0.00 84.50 335.00 428.00 617.50 0.00 z 884.00 690.00 134.00 41.00 0.00 3214.00
1991 0.00 10.00 39.00 216.50 451.50 560.00 860.50 908.50 666.00 263.00 2.00 0.00 3977.00
1992 0.00 1.00 165.50 263.50 568.00 838.50 845.50 858.50 488.50 262.50 21.50 0.00 4313.00
1993 0.00 0.50 17.00 173.50 634.50 609.50 696.00 766.50 593.00 317.50 3.50 0.00 3811.50
1994 0.00 0.00 88.50 344.50 520.50 612.00 957.00 0.00 z 676.50 234.00 0.00 0.00 3433.00
1995 0.00 0.50 22.00 191.50 556.50 645.00 881.50 683.50 660.50 189.50 3.00 0.00 3833.50
1996 0.00 0.00 27.00 224.00 353.00 608.50 886.50 842.50 515.00 195.50 17.50 0.00 3669.50
1997 0.00 0.00 10.50 155.50 516.50 586.00 782.00 865.50 614.50 172.50 40.00 0.00 3743.00
1998 0.00 1.00 93.50 240.00 568.00 673.50 989.00 939.00 713.50 233.00 32.00 0.00 4482.50
1999 0.00 0.00 23.50 195.50 367.00 592.50 797.00 905.00 524.00 183.50 67.50 2.00 3657.50
2000 0.00 0.00 36.00 289.50 439.50 657.50 808.00 831.00 541.50 213.00 6.50 0.00 3822.50
2001 0.00 0.00 71.00 183.00 502.00 588.50 889.50 906.00 639.00 169.50 32.00 0.00 3980.50
2002 0.00 5.00 21.50 225.50 397.50 705.50 910.50 834.00 573.50 230.50 29.00 0.00 3932.50
2003 0.00 0.00 72.50 221.00 434.50 731.50 957.00 908.50 636.50 370.50 2.50 0.00 4334.50
2004 0.00 0.50 105.00 313.00 461.00 718.00 952.00 0.00 z 523.00 267.50 5.00 0.00 3345.00
2005 0.00 0.50 83.00 261.50 539.50 636.50 868.00 890.50 530.00 282.50 0.00 z 0.00 4092.00
2006 0.00 0.50 34.62 a 250.00 477.00 703.45 a 592.50 k 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1465.56
Period of Record Statistics
MEAN 0.07 0.59 34.65 216.83 464.12 648.60 861.88 830.92 556.69 225.44 14.32 0.09 3850.30
S.D. 0.43 1.58 34.17 75.02 73.24 78.44 69.23 73.43 85.82 61.97 15.75 0.35 295.58
SKEW 7.39 3.94 1.50 0.17 0.31 0.23 -0.20 -0.12 -0.24 0.50 1.33 4.25 0.21
MAX 3.50 10.00 165.50 426.00 642.50 838.50 989.00 990.00 713.50 374.50 67.50 2.00 4482.50
MIN 0.00 0.00 0.00 75.50 322.00 482.59 696.00 681.00 360.00 112.50 0.00 0.00 3203.56
NO YRS 73 72 68 71 73 71 71 67 72 73 73 73 50