PORT TOWNSEND, WASHINGTON

Monthly Total Growing Degree Days

(456678)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201001
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
1891 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 349.00 173.50 30.00 552.50
1892 31.52 a 0.00 z 172.00 175.00 384.00 514.50 570.00 637.00 513.50 310.50 0.00 z 0.00 z 3308.02
1893 0.00 z 0.00 z 82.50 138.50 354.50 437.50 621.00 647.50 525.00 273.50 67.00 97.50 3244.50
1894 44.50 26.50 70.50 191.00 340.00 468.50 663.00 711.50 475.50 272.00 160.00 4.50 3427.50
1895 0.00 z 94.50 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 0.00 z 94.50
1896 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 0.00 z 0.00
1897 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 268.00 p 581.50 739.00 502.50 354.50 128.00 99.50 2405.00
1898 49.00 148.00 122.45 a 247.50 445.50 537.00 631.00 680.50 553.50 389.00 182.50 72.00 4057.95
1899 89.00 82.00 89.00 225.50 310.00 420.00 650.00 560.50 558.50 330.50 353.50 144.00 3812.50
1900 126.00 104.00 250.50 321.50 411.50 552.50 642.50 599.00 499.00 321.00 154.50 170.50 4152.50
1901 45.50 78.81 a 155.50 209.00 378.00 426.21 a 546.50 682.00 d 496.50 462.00 276.50 100.00 3856.52
1902 79.00 160.00 126.50 272.50 435.00 531.50 634.00 649.97 a 501.50 394.50 140.50 72.50 3997.47
1903 84.50 50.50 82.50 214.66 a 370.50 558.50 585.00 621.00 474.50 356.50 165.50 92.50 3656.16
1904 73.50 31.50 62.00 330.50 392.50 498.62 a 650.50 600.00 556.00 404.00 270.00 125.50 3994.62
1905 76.00 109.00 266.08 a 308.50 383.00 512.00 636.50 612.00 525.00 269.00 160.86 a 76.00 3933.95
1906 100.50 115.50 197.00 331.00 418.00 499.50 722.00 664.50 494.00 391.00 147.50 90.50 4171.00
1907 15.00 110.44 a 137.00 240.00 483.00 516.00 655.50 600.00 533.00 367.00 215.00 103.50 3975.44
1908 72.50 96.50 136.50 249.50 365.50 506.00 685.50 583.00 445.00 304.00 242.00 44.50 3730.50
1909 22.00 86.00 135.50 227.50 342.07 b 526.50 448.50 f 591.00 509.00 327.50 154.50 22.50 2944.07
1910 44.00 29.50 203.00 237.50 449.50 a 476.00 633.50 548.70 a 499.50 349.27 a 147.00 105.18 c 3722.65
1911 14.00 22.50 136.50 184.04 d 345.65 a 457.76 a 650.48 a 622.50 485.00 341.53 b 160.71 b 82.84 b 3503.52
1912 124.00 c 100.96 b 111.00 269.50 471.00 544.04 d 497.00 g 623.00 520.50 172.00 k 164.00 75.50 3003.50
1913 15.00 36.00 97.50 262.00 409.00 508.00 599.00 669.08 a 539.50 271.00 158.00 83.50 3647.58
1914 90.00 93.50 239.00 307.50 509.00 512.00 633.50 636.50 477.78 c 406.00 174.83 a 35.00 4114.61
1915 48.50 134.00 298.50 362.50 457.50 544.50 569.00 67.50 z 541.50 368.00 103.00 73.50 3500.50
1916 0.00 b 104.00 150.50 296.50 353.00 526.55 a 576.50 658.00 537.00 311.50 89.00 16.65 d 3619.20
1917 38.23 a 40.00 53.00 234.50 348.50 455.56 c 600.00 674.50 539.44 c 346.00 242.00 117.00 3688.73
1918 119.50 57.50 157.58 a 251.00 345.50 542.00 591.00 623.62 a 601.50 410.75 a 166.73 d 77.00 3943.68
1919 75.20 d 53.00 153.45 a 270.52 a 377.34 b 469.00 603.95 c 312.50 o 528.21 b 265.64 b 117.78 c 102.82 a 3016.91
1920 68.41 b 52.50 71.30 a 105.00 280.00 f 531.60 e 651.50 661.50 483.50 303.50 205.50 84.50 3218.81
1921 47.00 112.00 157.00 208.97 a 387.00 518.50 372.50 m 602.90 b 469.00 369.00 147.00 68.00 3086.36
1922 10.50 17.23 b 55.80 a 189.50 406.50 578.00 616.50 638.50 550.00 400.50 113.04 b 64.00 3640.07
1923 71.50 47.50 111.00 293.50 417.50 536.00 649.50 673.45 b 550.50 384.00 201.50 96.50 4032.45
1924 97.13 a 167.50 156.00 247.50 478.00 554.00 624.98 c 626.41 b 517.50 367.00 116.50 93.00 4045.53
1925 57.50 120.50 142.50 293.00 507.62 c 548.00 677.50 690.04 d 527.50 314.50 177.00 153.45 a 4209.11
1926 79.50 161.54 b 273.32 a 406.00 477.50 631.50 709.50 652.00 490.50 426.50 260.17 a 107.00 4675.03
1927 67.50 87.00 139.00 221.50 396.50 592.50 688.00 656.00 526.50 374.00 135.50 29.00 3913.00
1928 122.50 83.00 218.00 264.00 513.50 566.00 717.50 634.00 507.00 352.00 199.00 57.00 4233.50
1929 9.00 25.50 144.50 156.50 g 404.50 415.50 f 683.50 665.50 531.00 399.12 c 125.50 94.50 3082.62
1930 16.02 a 86.43 e 118.50 243.00 e 282.50 504.00 649.00 696.50 563.00 290.00 138.50 100.50 3687.95
1931 140.50 83.00 192.00 340.00 493.00 545.50 684.00 489.00 h 543.10 a 342.00 109.00 65.00 3537.10
1932 42.50 72.00 178.00 297.78 c 420.50 564.00 628.50 698.00 537.50 426.52 b 174.50 i 53.50 3918.80
1933 39.00 25.50 135.50 269.50 341.50 471.00 621.50 696.50 470.50 368.50 165.50 97.50 3702.00
1934 134.52 c 160.00 304.00 408.00 411.00 h 0.00 z 639.00 682.00 525.00 d 409.50 261.00 82.50 3605.52
1935 121.50 57.00 q 77.50 254.00 415.00 576.00 669.50 669.00 583.00 334.00 117.50 119.50 3936.50
1936 73.00 14.50 117.00 326.00 490.50 600.50 666.50 711.00 505.00 438.50 200.00 144.48 c 4286.98
1937 0.00 b 37.50 240.50 206.50 419.50 571.00 662.00 631.50 546.00 415.50 212.00 124.00 4066.00
1938 50.50 62.50 147.00 299.00 412.62 b 556.50 668.00 602.00 535.00 346.50 108.00 95.00 3882.62
1939 95.50 18.00 132.00 303.50 422.50 450.50 640.50 693.50 541.00 325.00 259.50 184.00 4065.50
1940 96.00 119.00 239.00 347.00 500.50 588.50 546.78 b 538.00 g 603.62 a 404.00 88.50 130.00 3662.90
1941 99.50 159.50 289.50 354.50 472.00 578.50 753.50 636.50 471.50 337.50 191.50 77.50 4421.50
1942 78.50 75.50 134.85 a 299.00 433.00 543.89 c 741.23 c 735.22 a 551.50 390.08 a 130.00 94.00 4206.77
1943 13.78 d 89.00 97.81 b 357.00 395.00 535.86 a 645.50 645.00 591.43 b 391.00 192.00 82.50 4035.88
1944 0.00 z 79.50 126.00 289.00 469.00 548.00 767.25 c 637.00 0.00 z 447.00 204.00 79.50 3646.25
1945 116.00 97.50 132.50 224.00 485.50 548.00 666.00 643.50 473.50 379.00 130.50 95.00 3991.00
1946 82.00 89.00 154.50 267.00 501.50 546.50 661.00 666.00 0.00 z 0.00 z 0.00 z 0.00 z 2967.50
1947 35.81 b 113.50 197.50 320.50 372.50 i 547.50 653.00 648.50 544.00 379.00 114.00 110.00 3663.31
1948 28.00 28.50 117.50 214.50 405.50 597.50 625.00 612.00 503.00 349.50 216.50 0.00 z 3697.50
1949 8.00 39.00 141.00 246.50 493.00 517.50 604.00 602.00 530.50 232.00 238.50 50.00 3702.00
1950 6.00 73.00 76.50 184.00 334.50 546.72 a 609.50 647.50 503.00 294.50 126.00 169.00 3570.22
1951 39.50 55.00 75.50 268.00 409.50 563.50 653.50 628.00 525.50 0.00 z 136.00 20.00 3374.00
1952 45.00 66.50 96.00 224.50 393.50 441.50 614.50 639.50 557.00 405.00 128.00 90.00 3701.00
1953 125.50 61.50 125.00 225.50 411.50 458.79 a 638.00 663.50 537.00 373.50 222.50 92.00 3934.29
1954 25.00 85.00 68.50 174.00 398.00 447.50 581.50 596.50 536.50 318.50 267.50 93.50 3592.00
1955 53.50 40.96 a 71.00 f 155.50 333.00 482.00 568.00 626.20 a 522.50 327.50 110.50 35.50 3255.16
1956 57.00 16.50 92.00 320.50 523.50 485.50 711.50 673.50 534.00 316.50 138.00 99.00 3967.50
1957 11.50 56.00 136.00 309.50 550.25 e 579.00 651.00 700.71 b 684.00 173.00 r 173.00 86.00 o 3850.96
1958 131.00 213.00 170.50 f 326.50 555.42 a 700.50 824.50 759.50 585.00 392.50 151.50 177.00 4816.42
1959 111.60 a 73.00 174.50 306.43 b 434.00 581.00 730.50 657.00 510.00 362.70 a 150.50 88.00 4179.23
1960 59.93 a 98.00 156.50 307.50 417.50 538.00 719.50 652.03 a 517.00 386.50 153.00 94.00 4099.47
1961 150.50 148.00 208.50 274.50 451.00 630.50 749.00 743.50 525.50 320.00 106.00 78.00 4385.00
1962 99.00 133.50 123.50 294.50 368.50 526.00 633.50 644.00 554.50 384.00 214.00 141.00 4116.00
1963 32.00 206.00 169.47 a 283.00 479.50 538.00 631.00 700.00 622.00 432.50 181.50 163.00 4437.97
1964 160.00 106.00 145.00 232.00 367.00 512.50 635.50 645.50 512.00 366.50 100.50 49.50 3832.00
1965 43.50 79.00 184.50 291.50 374.50 543.00 676.00 666.00 495.50 434.50 253.50 86.00 4127.50
1966 82.00 120.00 169.50 288.50 420.00 517.00 589.50 643.00 563.50 300.00 164.50 137.00 3994.50
1967 50.50 118.50 111.00 210.00 407.50 606.00 652.50 730.00 645.00 373.50 179.50 86.50 4170.50
1968 85.00 160.50 219.50 240.00 457.00 526.00 715.50 646.00 533.50 340.48 a 179.50 54.85 e 4157.83
1969 0.00 n 29.00 158.21 b 247.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 434.21
1970 0.00 z 145.00 44.50 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 189.50
1971 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 471.50 l 739.00 494.00 311.00 166.00 26.00 1736.00
1972 24.00 87.50 180.50 169.50 500.65 a 515.00 684.50 696.50 465.50 315.50 170.00 87.50 3896.65
1973 65.50 104.00 172.50 277.00 433.48 a 504.50 667.50 618.97 a 583.00 341.50 101.00 120.00 3988.95
1974 75.00 77.26 a 150.87 a 260.00 374.50 539.50 624.50 693.00 656.50 389.50 192.00 125.50 4158.13
1975 53.22 a 50.50 110.50 192.93 a 424.70 a 493.00 670.00 595.20 a 566.50 332.22 a 184.80 e 106.00 3779.56
1976 86.00 71.50 95.14 b 271.07 b 414.88 a 473.57 b 645.32 a 594.50 561.96 b 370.00 206.00 143.50 3933.45
1977 54.00 173.00 146.00 317.50 382.52 c 561.50 629.50 744.00 523.00 353.00 0.00 z 82.00 3966.02
1978 100.00 125.50 234.00 295.00 425.73 a 674.50 705.00 690.30 c 521.50 395.00 105.50 38.00 4310.04
1979 10.50 52.00 241.50 275.50 494.00 555.00 706.50 697.50 637.50 438.00 160.00 160.17 a 4428.17
1980 34.50 136.50 156.00 326.00 449.50 516.00 661.50 648.00 554.00 190.00 t 0.00 z 187.00 i 3482.00
1981 170.50 133.00 279.50 311.00 452.50 496.50 691.50 792.00 583.50 347.50 228.00 90.00 4575.50
1982 73.50 100.50 159.50 237.50 455.50 635.00 642.50 703.00 605.00 389.50 129.00 86.50 4217.00
1983 163.00 177.00 294.50 340.00 545.50 569.00 690.50 755.50 531.00 356.00 227.50 31.00 4680.50
1984 134.33 a 164.00 263.50 283.50 406.00 536.00 698.00 734.00 537.50 320.50 155.00 19.00 4251.33
1985 38.50 72.50 146.50 290.50 475.00 581.50 812.00 716.50 529.00 352.00 63.50 41.00 4118.50
1986 158.00 110.50 276.50 261.50 469.00 609.50 650.00 810.50 556.50 397.50 160.50 106.50 4566.50
1987 85.50 175.50 269.50 354.50 500.00 601.50 708.50 725.50 619.50 441.00 0.00 z 0.00 z 4481.00
1988 37.50 t 154.50 180.00 314.00 451.50 528.50 670.50 699.50 549.50 422.00 193.50 104.50 4268.00
1989 78.00 28.00 142.00 369.00 451.50 607.50 652.50 659.50 639.50 370.50 203.00 129.50 4330.50
1990 93.00 67.50 205.50 340.00 453.00 557.50 765.50 0.00 z 0.00 z 0.00 z 0.00 z 25.00 2507.00
1991 64.50 195.00 129.00 276.00 434.00 508.50 703.00 699.00 622.50 360.00 211.50 146.50 4349.50
1992 165.00 194.00 294.00 351.00 546.00 669.00 707.00 728.00 522.00 423.00 181.50 45.00 4825.50
1993 45.00 83.00 246.00 319.50 566.50 557.00 630.50 709.00 563.00 421.50 131.50 95.50 4368.00
1994 168.50 60.00 240.00 340.00 504.00 546.00 716.50 749.00 628.50 362.50 97.50 105.00 4517.50
1995 141.50 153.50 196.50 300.50 525.00 599.00 743.00 621.00 650.00 360.00 257.50 117.00 4664.50
1996 105.50 113.50 210.50 326.50 369.00 532.00 734.50 737.00 508.00 343.00 149.50 44.50 4173.50
1997 100.00 107.00 163.50 303.50 526.50 566.50 696.50 769.00 622.00 386.50 238.00 113.50 4592.50
1998 126.00 169.50 236.50 308.00 473.00 575.00 708.00 726.50 621.50 384.50 232.00 93.00 4653.50
1999 90.00 98.00 150.50 266.00 367.50 493.00 628.50 687.00 560.00 346.00 233.00 94.50 4014.00
2000 39.50 114.50 177.50 311.50 410.00 574.00 669.00 648.50 555.50 393.00 124.00 87.00 4104.00
2001 121.00 74.00 0.00 z 260.50 441.00 495.00 632.50 679.50 568.50 345.50 199.50 61.00 3878.00
2002 107.50 102.00 107.00 277.50 402.00 616.00 701.00 696.93 d 572.00 351.50 237.00 113.00 4283.43
2003 174.00 119.00 226.00 281.50 429.50 650.50 765.00 736.50 641.50 431.00 104.50 87.50 4646.50
2004 122.50 160.50 249.50 396.00 503.00 640.00 797.00 763.50 538.00 410.00 178.50 99.00 4857.50
2005 144.00 84.50 268.50 393.50 542.00 599.50 756.50 743.00 537.50 396.80 a 120.50 109.00 4695.30
2006 136.50 57.50 171.00 0.00 z 456.00 437.00 i 742.00 640.50 579.00 339.00 0.00 z 97.28 b 3218.78
2007 95.30 d 141.50 244.42 e 285.00 438.50 513.00 823.00 0.00 z 0.00 z 403.00 b 177.50 0.00 z 3121.22
2008 0.00 z 136.50 131.50 0.00 z 0.00 z 573.00 796.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1637.50
2009 57.00 0.00 z 65.62 a 235.20 e 325.00 g 646.50 822.00 0.00 z 620.00 357.50 184.00 57.00 i 2987.82
2010 174.50 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 0.00 z 0.00 z 174.50
Period of Record Statistics
MEAN 77.26 95.46 163.71 275.76 432.70 542.37 667.95 669.33 543.95 363.20 170.85 89.90 4100.60
S.D. 45.56 47.53 64.04 57.46 59.66 54.51 60.20 51.64 47.86 45.20 52.28 37.81 331.25
SKEW 0.31 0.32 0.39 -0.22 0.09 0.25 0.56 0.27 0.65 -0.29 0.50 0.07 0.27
MAX 174.50 213.00 304.00 408.00 566.50 700.50 824.50 810.50 684.00 462.00 353.50 184.00 4857.50
MIN 0.00 14.50 44.50 105.00 282.50 420.00 546.50 548.70 445.00 232.00 63.50 4.50 3427.50
NO YRS 109 111 111 110 107 109 110 106 109 108 106 106 80