SEDRO WOOLLEY, WASHINGTON

Monthly Total Growing Degree Days

(457507)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1896 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 734.46 e 460.00 389.50 70.00 179.50 1833.46
1897 75.00 84.50 79.50 384.50 575.00 685.00 679.50 815.00 544.14 a 375.50 80.00 95.50 4473.14
1898 20.50 166.00 127.00 366.00 573.50 646.00 724.50 779.00 615.50 379.50 103.50 38.00 4539.00
1899 52.00 35.00 95.50 300.50 376.50 505.00 0.00 z 481.50 h 644.00 259.00 g 328.50 149.00 2486.00
1900 165.50 75.00 189.50 j 307.50 359.50 f 583.80 e 664.00 601.50 494.00 289.00 123.00 158.00 3461.30
1901 17.00 78.00 146.50 211.50 451.00 463.50 576.17 b 801.87 a 514.50 480.00 217.50 40.50 3998.04
1902 0.00 z 160.00 159.65 a 308.00 489.00 564.50 668.05 a 438.50 i 459.00 394.50 100.00 46.00 3348.70
1903 58.50 46.50 95.00 231.50 429.00 637.00 643.50 685.00 493.50 396.50 179.00 58.50 3953.50
1904 50.50 16.00 74.00 368.00 428.83 a 409.50 h 709.00 616.50 517.50 386.50 250.50 81.50 3498.83
1905 47.50 113.00 256.50 340.50 421.00 0.00 z 732.00 648.00 531.00 209.00 132.00 58.00 3488.50
1906 72.50 74.00 214.50 352.00 458.00 591.50 800.00 671.50 509.00 359.00 123.00 57.50 4282.50
1907 0.50 60.50 62.50 226.50 507.37 a 553.89 c 714.00 629.30 a 507.00 354.00 177.00 0.00 z 3792.56
1908 33.00 71.00 161.50 360.00 c 464.00 401.50 g 768.50 682.50 495.00 351.00 245.00 23.00 3654.50
1909 17.00 66.00 0.00 z 254.00 416.50 633.50 658.00 631.00 538.50 354.50 107.50 14.39 c 3690.89
1910 11.62 c 18.15 a 338.00 398.50 659.00 591.50 696.50 638.50 564.50 356.00 110.50 69.50 4452.27
1911 5.00 20.00 189.50 202.50 429.50 530.50 736.00 649.50 475.34 a 290.00 106.50 61.50 3695.84
1912 95.50 95.50 100.50 285.50 533.50 592.50 700.00 651.00 492.50 251.50 161.50 31.50 3991.00
1913 2.00 25.00 51.00 288.00 407.00 568.50 674.00 692.00 514.50 271.00 129.50 82.50 3705.00
1914 70.50 63.00 193.50 347.50 558.50 656.38 a 777.07 a 691.50 453.50 417.00 177.12 d 16.50 4422.06
1915 26.00 120.00 289.00 382.76 a 552.50 709.00 819.00 0.00 z 534.00 381.00 54.50 48.50 3916.26
1916 3.00 71.50 129.00 330.00 453.50 630.00 719.50 742.50 518.50 224.50 72.00 5.50 3899.50
1917 13.50 17.50 41.50 243.00 448.00 578.00 788.50 756.50 535.00 329.00 267.00 94.00 4111.50
1918 98.50 42.50 147.00 266.50 390.00 591.00 690.00 672.00 582.00 382.00 150.50 70.00 4082.00
1919 72.00 32.50 136.50 303.50 430.50 475.00 619.50 653.50 531.50 220.00 136.00 133.00 3743.50
1920 56.50 33.50 139.50 162.50 341.00 557.50 716.50 695.50 505.00 297.50 178.50 77.50 3761.00
1921 42.50 93.50 134.00 251.50 409.00 591.50 614.00 654.00 480.00 346.50 159.50 54.50 3830.50
1922 7.50 22.00 81.00 196.00 430.50 594.50 649.50 647.50 547.00 377.00 97.00 77.50 d 3727.00
1923 54.00 40.00 124.00 317.00 460.50 592.50 748.50 769.50 582.50 438.00 206.50 103.00 4436.00
1924 91.50 184.00 114.50 262.00 497.00 563.00 655.00 657.00 528.62 a 379.20 c 106.00 75.00 4112.82
1925 53.00 129.50 130.50 318.00 522.00 559.00 699.00 659.00 534.00 238.00 161.50 157.50 4161.00
1926 52.00 130.50 266.00 409.50 512.50 622.50 711.50 666.00 452.50 433.00 229.50 58.00 4543.50
1927 48.50 79.50 98.00 250.50 390.00 607.00 703.50 690.94 e 532.50 399.00 102.00 20.50 3921.94
1928 119.00 97.00 239.00 308.00 509.50 577.50 719.00 630.00 473.50 319.50 173.00 60.45 a 4225.45
1929 3.50 5.50 164.00 0.00 z 437.50 548.00 666.00 688.50 534.00 438.00 107.00 75.00 3667.00
1930 3.00 119.50 121.50 m 380.36 b 389.50 558.00 641.50 687.00 510.50 294.50 a 7.00 n 75.50 3659.36
1931 156.00 76.50 209.00 357.50 495.00 561.50 673.50 637.50 572.00 361.00 102.50 54.00 4256.00
1932 36.00 73.00 170.50 316.00 449.00 578.28 a 569.50 665.50 515.00 366.00 215.50 28.00 3982.28
1933 22.00 18.50 148.00 234.00 398.50 472.50 604.00 736.54 d 480.50 348.50 168.00 122.50 3753.54
1934 129.50 209.00 300.00 434.50 524.50 569.00 671.00 713.50 516.00 431.79 c 282.22 c 69.00 4850.01
1935 133.00 166.50 79.80 d 246.50 432.00 597.00 659.50 661.50 565.50 349.00 94.50 133.50 4118.30
1936 60.00 2.00 95.50 345.00 524.50 615.50 655.50 708.00 491.00 407.50 114.00 82.00 4100.50
1937 0.00 36.00 238.00 228.00 414.50 602.00 687.50 660.50 549.00 448.00 193.50 109.00 4166.00
1938 45.50 92.00 164.50 349.00 466.50 592.50 700.50 633.00 607.50 397.00 85.00 91.50 4224.50
1939 84.50 24.00 143.00 345.50 487.50 522.50 671.50 711.50 527.50 352.50 334.00 241.50 4445.50
1940 110.50 122.50 275.50 389.00 523.50 563.50 649.00 684.00 565.50 409.50 78.50 138.00 4509.00
1941 156.00 182.50 332.00 387.00 476.50 583.00 795.50 713.00 504.00 412.00 216.50 93.00 4851.00
1942 98.00 74.50 192.00 362.50 486.50 547.50 780.50 779.50 554.00 428.50 104.50 85.00 4493.00
1943 22.39 d 118.46 b 125.50 375.50 420.50 536.00 709.00 717.00 617.50 401.50 192.50 50.00 4285.85
1944 90.00 101.50 150.00 334.00 584.00 660.00 862.50 779.50 598.50 503.50 206.50 55.00 4925.00
1945 102.50 128.00 174.00 276.00 566.50 602.50 759.00 740.00 536.50 395.00 127.00 90.00 4497.00
1946 69.00 79.00 181.50 263.50 541.00 629.00 731.00 674.00 584.50 240.50 75.00 68.50 4136.50
1947 45.00 86.00 201.00 355.50 516.50 602.50 688.50 660.00 553.50 376.50 69.50 93.00 4247.50
1948 22.50 23.50 106.00 220.00 430.00 637.50 665.50 678.50 493.00 302.00 66.00 4.00 3648.50
1949 1.00 46.50 146.50 318.50 467.50 524.50 632.00 680.50 583.00 244.50 216.00 g 43.50 3688.00
1950 14.50 66.50 102.00 232.50 338.50 636.00 686.50 709.50 524.50 312.50 119.50 180.00 3922.50
1951 33.00 57.50 96.00 284.00 444.00 607.50 736.50 672.00 588.50 346.00 154.50 20.00 4039.50
1952 39.50 78.71 a 101.50 269.00 462.00 483.50 687.00 707.50 594.00 408.00 131.50 71.00 4033.21
1953 150.50 70.50 155.00 296.50 496.00 529.50 706.00 731.00 580.00 397.50 248.00 82.31 b 4442.81
1954 32.50 108.00 81.00 196.00 459.50 488.00 607.00 633.00 570.50 331.50 282.00 94.00 3883.00
1955 27.00 26.50 44.50 196.00 339.00 545.00 601.00 625.00 508.00 332.00 91.00 29.00 3364.00
1956 45.00 6.00 88.50 284.00 519.00 541.00 743.50 707.00 546.50 295.00 93.00 69.00 3937.50
1957 12.50 27.00 144.00 326.50 552.50 600.50 629.50 665.50 629.00 314.00 96.00 105.50 4102.50
1958 114.50 200.50 166.50 300.50 565.50 730.00 867.00 763.50 567.00 397.50 106.00 158.50 4937.00
1959 75.00 64.50 141.00 289.50 469.00 619.00 737.50 638.50 513.00 336.00 112.50 61.00 4056.50
1960 60.00 79.00 164.00 316.00 446.00 565.50 726.50 675.00 506.50 380.50 117.50 68.00 4104.50
1961 142.50 121.00 232.00 259.50 470.00 649.50 770.50 753.50 503.50 271.50 92.50 61.00 4327.00
1962 82.50 152.50 94.00 311.50 375.00 553.50 661.00 686.50 565.00 375.00 198.50 113.00 4168.00
1963 19.50 216.22 a 116.50 256.50 479.00 562.00 649.50 705.50 644.50 430.00 150.00 104.50 4333.72
1964 57.00 38.50 104.50 179.50 398.50 541.00 680.00 659.50 480.50 361.00 0.00 z 51.50 k 3500.00
1965 26.35 a 52.50 117.50 279.50 344.50 529.66 a 712.50 713.53 b 471.50 421.50 254.00 89.50 4012.54
1966 63.00 76.50 143.50 258.00 385.50 521.79 b 612.00 673.22 a 588.50 304.83 a 152.00 157.07 a 3935.90
1967 58.50 70.00 74.00 197.50 433.45 c 647.50 672.70 a 810.00 647.07 a 400.00 157.50 60.50 4228.72
1968 76.00 140.50 228.00 209.50 438.13 a 537.41 a 709.79 b 662.50 518.28 a 311.50 165.00 26.50 4023.12
1969 13.50 34.00 131.50 246.00 514.60 a 689.00 632.92 a 606.05 a 532.24 a 316.50 169.50 86.50 3972.31
1970 45.00 114.00 153.00 190.34 a 391.24 b 618.50 676.00 651.00 a 431.50 250.50 170.17 a 20.00 3711.26
1971 49.50 86.50 67.50 257.00 427.80 a 485.17 a 690.50 779.00 498.50 280.00 128.00 10.00 3759.47
1972 20.00 76.00 165.50 179.50 478.84 c 540.52 a 697.00 718.50 435.50 248.50 134.50 91.00 3785.36
1973 85.00 94.50 149.00 239.50 450.02 a 545.50 677.00 616.26 b 572.00 344.50 68.00 107.98 a 3949.26
1974 45.47 a 41.00 148.50 275.69 a 361.50 564.50 662.00 707.50 669.50 362.00 176.50 126.00 4140.16
1975 37.20 a 35.00 88.87 a 176.00 453.24 b 522.00 717.50 642.00 570.50 331.00 139.50 92.50 3805.31
1976 61.00 0.00 z 80.50 267.00 431.50 484.14 a 678.50 637.50 598.00 343.50 164.50 125.00 3871.14
1977 39.50 164.50 109.00 310.86 a 390.50 582.50 631.00 793.00 503.50 335.83 a 126.50 45.50 4032.20
1978 80.00 136.00 213.50 310.00 425.50 669.00 737.50 724.50 532.00 381.00 64.50 19.00 4292.50
1979 9.50 23.69 b 216.50 276.50 511.50 569.50 757.00 743.50 656.00 408.00 123.00 136.83 b 4431.52
1980 19.50 122.00 140.00 365.50 462.00 539.00 674.00 662.00 555.00 401.50 215.50 175.50 4331.50
1981 129.00 101.50 263.00 267.50 471.50 518.50 688.00 782.00 576.50 289.50 214.00 61.00 4362.00
1982 33.50 66.00 135.00 223.50 431.50 654.50 0.00 z 684.50 595.00 356.00 67.00 55.50 3302.00
1983 137.50 166.50 281.50 308.50 543.00 582.00 679.00 738.00 498.00 326.50 222.50 20.00 4503.00
1984 113.00 116.00 246.50 279.50 405.00 555.50 694.00 722.50 549.00 302.00 145.50 14.00 4142.50
1985 24.50 45.50 98.00 274.00 463.00 576.50 811.50 717.00 488.00 328.00 46.50 23.50 3896.00
1986 176.50 111.50 291.00 237.50 476.00 631.00 627.50 781.00 542.00 383.50 142.00 101.50 4501.00
1987 83.00 163.50 267.00 361.00 475.50 594.50 716.00 719.50 602.00 382.00 251.00 76.00 4691.00
1988 70.00 107.00 153.00 293.00 459.00 559.50 678.00 701.50 543.50 422.00 165.00 103.00 4254.50
1989 47.50 25.00 156.50 360.50 437.00 639.50 665.50 698.00 602.00 378.50 163.00 111.00 4284.00
1990 85.50 36.50 203.00 349.00 460.00 568.50 785.50 797.00 602.50 332.50 182.00 35.50 4437.50
1991 0.00 z 188.50 116.00 274.50 454.00 513.50 735.50 751.00 589.50 345.50 191.50 124.00 4283.50
1992 155.00 187.00 277.50 389.00 538.00 686.00 728.50 743.50 536.00 404.00 165.00 25.50 4835.00
1993 34.50 92.00 217.00 332.00 612.00 595.50 660.00 727.50 553.50 432.50 79.50 79.50 4415.50
1994 152.50 40.50 236.00 356.50 524.50 566.50 749.00 777.00 631.00 364.00 45.50 104.50 4547.50
1995 128.50 134.00 209.00 312.00 538.00 651.50 0.00 z 0.00 z 0.00 z 368.00 232.50 119.50 2693.00
1996 90.50 105.00 205.50 371.00 390.00 572.00 751.00 752.00 516.50 320.00 132.50 30.00 4236.00
1997 87.00 81.50 167.50 313.50 564.50 599.50 705.50 822.50 650.00 364.00 264.50 85.50 4705.50
1998 0.00 z 184.00 216.50 296.00 455.50 572.50 768.00 732.00 584.50 328.00 152.00 54.00 4343.00
1999 57.50 55.50 136.50 233.00 358.50 528.00 640.50 732.78 b 548.50 266.00 177.00 34.00 3767.78
2000 2.50 85.00 157.07 a 351.00 446.00 608.50 707.12 b 693.50 583.50 386.50 101.00 65.50 4187.19
2001 117.50 57.00 187.00 262.50 449.00 517.76 a 667.00 737.50 573.50 321.00 228.50 46.00 4164.26
2002 106.00 67.00 98.50 250.50 434.50 618.50 723.50 714.79 e 557.50 312.00 213.00 102.50 4198.29
2003 148.00 75.00 215.00 297.00 468.50 678.50 814.00 763.50 604.00 455.50 92.50 93.50 4705.00
2004 115.50 138.00 252.00 401.00 550.50 660.00 817.00 821.50 547.00 392.00 158.50 90.50 4943.50
2005 175.50 76.00 282.00 339.00 604.00 602.00 746.50 793.00 546.50 447.50 100.50 125.00 4837.50
2006 142.00 80.50 193.00 301.00 474.50 641.00 764.00 711.50 575.50 293.00 205.00 87.00 4468.00
2007 39.00 104.50 217.00 304.00 460.50 571.50 769.50 704.50 520.00 318.50 138.50 52.00 4199.50
2008 36.00 83.00 111.50 188.50 481.00 515.50 697.50 747.50 556.00 324.00 257.00 50.00 4047.50
2009 10.00 70.00 91.00 296.50 0.00 z 677.00 827.70 a 757.50 670.50 348.00 205.50 54.50 4008.20
2010 222.00 181.50 257.00 311.00 423.00 563.00 740.50 750.50 622.00 428.50 159.00 99.50 4757.50
2011 99.72 a 58.50 166.00 176.00 383.00 590.00 690.50 726.50 668.57 b 288.00 g 88.45 a 23.00 g 3647.24
2012 51.50 f 59.00 i 50.00 s 212.50 i 0.00 z 285.00 k 428.00 j 0.00 z 0.00 z 0.00 0.00 0.00 0.00
2013 6.00 43.00 124.50 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 173.50
Period of Record Statistics
MEAN 65.32 85.66 161.91 292.95 464.60 582.67 702.87 704.42 547.40 351.51 151.18 77.25 4207.45
S.D. 48.90 50.67 66.69 61.09 62.78 53.98 58.34 52.71 52.49 66.99 63.56 43.89 332.89
SKEW 0.76 0.61 0.53 -0.07 0.38 0.20 0.41 0.27 0.27 -1.34 0.48 0.72 0.25
MAX 222.00 216.22 338.00 434.50 659.00 730.00 867.00 822.50 670.50 503.50 334.00 241.50 4943.50
MIN 0.00 2.00 41.50 162.50 338.50 463.50 569.50 601.50 431.50 0.00 0.00 0.00 3364.00
NO YRS 113 115 113 114 113 112 112 112 115 115 114 114 95