MOUNT VERNON 3 WNW, WASHINGTON

Monthly Total Growing Degree Days

(455678)

Base Temperature = 40 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200501
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
1956 74.50 5.00 92.50 263.57 b 473.00 487.50 666.50 624.50 485.00 298.50 99.50 89.00 3659.07
1957 8.50 32.00 141.00 301.50 528.00 584.00 629.00 656.34 b 600.00 320.50 106.00 129.50 4036.34
1958 134.00 216.00 152.00 286.00 570.50 706.00 830.00 759.00 545.50 368.50 136.00 178.00 4881.50
1959 112.63 a 61.00 119.50 f 278.50 432.50 600.00 722.50 633.00 500.50 335.00 118.00 75.00 3868.63
1960 65.50 89.00 h 152.00 293.50 423.50 542.00 715.00 654.00 474.00 389.50 118.50 71.00 3898.50
1961 139.00 160.50 217.50 254.50 453.50 622.50 737.00 752.50 472.50 263.00 92.50 79.50 4244.50
1962 83.50 142.00 108.50 291.50 373.00 548.50 642.00 680.50 551.50 383.00 201.50 135.00 4140.50
1963 27.00 202.00 139.00 257.50 453.00 548.50 625.50 699.00 625.50 434.50 174.00 118.50 4304.00
1964 66.50 31.50 101.50 160.00 349.50 515.00 627.00 610.00 443.50 317.00 64.50 35.50 3321.50
1965 28.50 55.50 108.00 265.50 338.50 506.50 678.00 684.00 417.93 a 399.50 227.50 88.50 3797.93
1966 87.00 82.00 148.00 241.50 375.50 508.00 609.50 652.00 579.00 284.50 171.50 161.20 a 3899.70
1967 92.50 77.00 86.00 179.50 418.00 619.50 681.50 768.00 606.50 397.50 148.00 78.50 4152.50
1968 101.00 136.00 214.00 202.50 447.00 525.00 718.50 654.00 502.50 298.00 151.00 49.50 3999.00
1969 14.00 46.50 140.50 242.00 487.50 657.50 624.00 588.00 520.00 286.00 164.00 79.00 3849.00
1970 56.50 117.00 128.50 185.00 375.50 568.50 649.50 633.50 437.50 237.50 138.00 37.50 3564.50
1971 68.50 80.50 75.50 237.50 405.50 463.00 651.50 751.00 460.00 263.00 152.00 14.50 3622.50
1972 25.00 86.50 188.00 172.50 467.50 515.00 660.00 694.00 421.00 250.00 166.00 98.00 3743.50
1973 83.00 93.50 159.50 242.00 464.50 557.50 660.00 611.50 574.50 340.50 93.50 125.50 4005.50
1974 81.50 76.50 174.00 271.00 349.50 549.50 627.50 682.00 622.00 334.00 194.50 122.00 4084.00
1975 49.00 46.50 98.50 165.00 425.50 501.00 684.00 639.50 540.00 343.00 174.00 112.00 3778.00
1976 89.00 56.50 97.00 259.00 436.50 479.00 682.00 628.50 579.00 339.50 165.50 128.00 3939.50
1977 49.00 150.50 109.00 293.50 390.50 573.62 a 633.00 772.50 488.00 320.00 134.00 83.00 3996.62
1978 79.00 134.00 219.50 289.00 420.00 636.50 727.00 723.50 522.50 351.50 68.50 24.50 4195.50
1979 6.50 56.00 182.00 252.50 468.50 527.50 708.50 676.50 621.00 385.50 89.00 138.00 4111.50
1980 25.50 149.50 125.50 315.00 411.50 498.50 634.00 604.50 496.50 341.50 191.90 a 184.50 3978.40
1981 113.50 119.50 220.50 243.00 423.50 484.00 652.50 726.00 541.00 288.50 218.00 57.00 4087.00
1982 43.50 92.50 101.50 182.00 394.00 608.00 608.50 650.50 567.00 370.00 106.50 106.50 3830.50
1983 146.00 168.50 256.50 261.50 495.00 559.50 652.00 719.50 488.00 294.50 229.50 28.50 4299.00
1984 124.00 136.50 236.50 261.00 402.00 550.00 668.00 690.50 496.50 269.00 123.50 9.00 3966.50
1985 9.50 44.50 90.00 261.00 437.00 532.50 766.00 683.50 473.50 328.00 67.00 24.50 3717.00
1986 183.00 99.50 264.50 203.00 457.50 582.00 611.00 754.00 512.50 360.00 136.50 92.50 4256.00
1987 91.00 154.00 259.00 321.50 459.50 582.00 665.50 685.00 556.50 315.50 233.50 80.50 4403.50
1988 49.50 95.00 112.00 244.50 425.00 524.00 641.00 662.50 485.00 384.50 151.50 93.00 3867.50
1989 48.00 22.81 a 143.50 323.50 416.50 595.00 633.50 655.50 540.50 327.50 164.50 91.50 3962.31
1990 72.00 37.00 158.50 315.00 429.00 554.50 750.00 751.00 551.00 303.00 172.00 43.00 4136.00
1991 67.00 182.00 91.50 238.00 407.50 486.50 675.50 712.00 548.50 272.50 179.50 163.00 4023.50
1992 168.50 164.50 252.50 0.00 z 535.50 662.00 720.50 714.00 504.50 0.00 z 149.00 29.50 3900.50
1993 57.50 66.50 207.50 339.00 595.00 421.00 i 639.00 696.50 513.50 405.00 78.00 111.00 3708.50
1994 161.00 70.00 208.00 340.50 511.00 533.00 740.50 737.50 615.00 310.00 68.00 105.50 4400.00
1995 120.50 139.50 198.00 280.00 503.50 618.50 756.00 666.50 647.00 347.50 273.50 133.00 4683.50
1996 101.50 107.00 196.00 358.00 394.50 559.50 735.00 725.00 500.50 320.00 147.00 51.00 4195.00
1997 114.50 77.50 183.50 298.00 556.50 599.00 708.00 802.50 633.00 362.00 229.50 84.50 4648.50
1998 158.50 182.00 222.50 276.00 465.00 587.50 0.00 z 754.50 598.00 359.50 224.50 96.50 3924.50
1999 97.50 111.50 153.50 232.50 370.50 531.50 650.00 710.50 522.00 311.50 245.00 84.50 4020.50
2000 42.00 0.00 z 159.00 319.00 439.00 599.00 0.00 z 673.00 547.50 0.00 z 0.00 z 67.50 2846.00
2001 96.62 a 35.00 160.00 232.24 a 443.50 521.00 0.00 z 722.00 535.50 302.50 220.00 51.00 3319.36
2002 101.50 0.00 z 93.50 257.50 403.50 0.00 z 705.00 710.42 a 540.00 301.50 227.00 113.00 3452.92
2003 150.00 59.00 218.50 289.50 464.00 648.50 0.00 z 0.00 z 602.00 452.50 87.00 114.50 3085.50
2004 125.00 122.00 251.00 374.00 511.50 646.50 775.00 e 820.50 0.00 z 0.00 z 0.00 z 63.50 3689.00
2005 149.83 d 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 149.83
Period of Record Statistics
MEAN 84.76 99.57 162.40 263.54 442.40 561.79 679.46 692.81 533.43 331.87 154.68 88.35 4046.19
S.D. 45.56 51.88 55.07 50.02 56.94 55.43 51.33 53.33 57.85 48.09 54.57 42.39 308.19
SKEW 0.18 0.31 0.23 -0.15 0.58 0.43 0.75 0.20 0.05 0.33 0.12 0.17 0.42
MAX 183.00 216.00 264.50 374.00 595.00 706.00 830.00 820.50 647.00 452.50 273.50 184.50 4881.50
MIN 6.50 5.00 75.50 160.00 338.50 463.00 608.50 588.00 417.93 237.50 64.50 9.00 3321.50
NO YRS 50 46 48 48 49 47 45 48 48 46 47 49 39