PORT TOWNSEND, WASHINGTON

Monthly Total Growing Degree Days

(456678)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 600.52 a 625.00 612.00 504.00 349.50 216.50 0.00 z 2907.52
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 57.50 174.00 0.00 z 456.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 824.00
Period of Record Statistics
MEAN 87.48 106.48 174.97 283.76 447.88 554.86 679.60 688.77 562.23 366.68 171.77 91.09 4226.07
S.D. 48.67 49.01 62.46 52.73 58.93 58.11 56.83 53.30 49.90 42.59 49.24 39.97 329.97
SKEW 0.15 0.33 0.13 -0.37 0.19 0.33 0.45 0.05 0.56 -0.41 0.00 0.04 -0.02
MAX 174.00 213.00 294.50 396.00 566.50 700.50 824.50 810.50 684.00 441.00 267.50 177.00 4857.50
MIN 6.00 16.50 44.50 155.50 333.00 441.50 568.00 594.50 465.50 232.00 63.50 19.00 3570.22
NO YRS 54 57 54 55 55 55 55 55 55 52 52 52 44