PORT TOWNSEND, WASHINGTON

Monthly Total Heating Degree Days

(456678)

Base Temperature = 65 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 153.62 a 152.50 163.00 247.00 425.50 536.00 0.00 z 1677.62
1949 981.50 767.00 634.50 503.50 282.00 232.50 171.50 177.50 226.50 543.00 511.50 801.50 5832.50
1950 1203.50 693.00 704.50 566.00 440.50 204.83 a 166.50 131.50 247.50 480.50 648.00 613.00 6099.33
1951 841.00 682.00 774.50 482.00 365.50 192.00 127.50 149.00 228.50 0.00 z 624.00 856.00 5322.00
1952 839.00 684.50 684.00 525.50 381.50 308.50 169.00 148.50 194.50 370.00 656.50 697.00 5658.50
1953 655.50 649.50 655.50 524.50 363.50 291.21 a 139.50 111.50 213.00 401.50 527.50 688.50 5221.21
1954 869.50 627.50 729.50 576.00 377.00 302.50 193.50 179.00 213.50 456.50 486.00 706.00 5716.50
1955 734.50 684.96 a 565.00 f 594.50 442.00 278.00 207.00 150.87 a 242.00 447.50 747.00 816.50 5344.83
1956 789.50 806.50 714.00 429.50 255.00 264.50 95.50 102.50 216.00 458.50 620.50 730.00 5482.00
1957 930.50 698.00 640.00 440.50 224.75 e 171.00 128.50 75.36 b 77.50 152.00 r 581.00 314.00 o 3967.11
1958 644.50 487.00 454.50 f 423.50 270.73 a 93.50 28.00 38.50 176.00 382.50 628.00 599.00 3771.23
1959 729.02 a 650.50 600.50 443.57 b 341.00 169.00 83.50 123.00 240.00 412.30 a 625.00 707.50 5124.89
1960 761.05 a 648.50 645.50 442.50 357.50 212.00 85.50 152.93 a 234.00 388.50 599.00 701.00 5227.98
1961 634.50 552.50 570.50 475.50 324.00 134.50 67.00 47.50 224.50 455.00 665.00 744.00 4894.50
1962 746.00 601.00 667.50 455.50 406.50 224.00 154.00 131.50 198.50 391.00 540.50 654.50 5170.50
1963 869.50 496.00 606.05 a 467.00 302.00 212.50 144.00 80.00 133.00 342.50 574.00 620.00 4846.55
1964 615.00 621.50 630.00 518.00 408.00 237.50 141.00 131.50 238.00 408.50 662.50 844.50 5456.00
1965 764.50 628.00 601.50 458.50 400.50 207.50 121.50 114.50 254.50 340.50 498.50 731.00 5121.00
1966 730.50 582.50 609.50 461.50 355.00 233.00 185.50 136.00 186.50 475.00 588.50 650.00 5193.50
1967 728.50 584.00 667.00 540.00 367.50 146.00 125.50 56.00 115.00 401.50 571.50 743.00 5045.50
1968 759.50 567.00 555.50 510.00 318.00 224.00 76.00 130.50 218.00 434.52 a 570.50 755.92 e 5119.44
1969 612.00 n 696.50 617.33 b 503.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1816.83
1970 0.00 z 555.00 785.50 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 1340.50
1971 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 33.50 l 56.50 256.00 472.50 584.00 827.50 2196.50
1972 884.50 666.50 599.50 580.50 279.52 a 235.00 117.00 100.50 292.50 459.50 580.00 842.00 5637.02
1973 807.50 601.50 602.50 473.00 344.62 a 248.50 129.00 160.68 a 174.50 433.50 663.00 658.00 5296.30
1974 788.50 624.30 a 641.18 a 490.00 400.50 212.00 163.00 106.00 114.50 385.50 559.50 659.50 5144.48
1975 769.32 a 677.00 665.50 558.10 a 350.30 a 257.00 119.00 179.80 a 184.00 442.78 a 575.40 e 700.50 5478.70
1976 702.50 660.50 712.47 b 478.93 b 360.12 a 276.43 b 130.20 a 180.50 188.57 b 405.00 546.00 631.50 5272.71
1977 777.50 527.00 629.50 432.50 392.48 c 189.50 153.50 88.00 227.00 422.00 0.00 z 722.50 4561.48
1978 695.00 576.00 543.50 455.00 349.27 a 100.00 99.50 107.95 c 228.50 380.00 688.00 822.00 5044.71
1979 891.50 673.50 533.50 474.50 281.00 195.00 95.50 83.50 119.00 337.00 602.00 621.03 a 4907.03
1980 865.00 603.00 622.50 424.00 325.50 234.00 121.50 134.00 196.00 85.00 t 0.00 z 364.50 i 3525.50
1981 604.50 584.00 495.50 439.00 322.50 253.50 97.00 55.00 172.50 427.50 523.00 705.50 4679.50
1982 772.00 621.50 615.50 512.50 319.50 134.50 134.00 93.00 153.50 385.50 637.50 705.00 5084.00
1983 616.00 523.00 480.50 410.00 242.00 181.00 95.50 40.50 219.00 419.00 523.50 884.50 4634.50
1984 675.28 a 561.00 511.50 466.50 369.00 214.00 97.50 60.00 212.50 459.50 595.00 849.00 5070.78
1985 782.00 665.00 628.50 459.50 302.00 179.50 14.00 86.00 221.00 423.00 863.00 798.50 5422.00
1986 617.00 631.50 498.50 488.50 307.50 142.00 125.00 24.50 201.00 377.50 596.00 681.50 4690.50
1987 719.00 526.00 505.50 395.50 276.00 162.00 83.00 71.50 141.00 334.00 0.00 z 0.00 z 3213.50
1988 244.50 t 583.00 595.00 436.00 323.50 221.50 130.50 93.00 214.50 353.00 557.00 685.00 4192.00
1989 726.00 806.50 658.00 381.00 323.50 169.50 124.00 115.50 116.50 404.50 547.00 652.00 5024.00
1990 688.50 701.50 570.00 410.00 322.00 197.00 52.50 0.00 z 0.00 z 0.00 z 0.00 z 921.50 3863.00
1991 770.00 505.00 649.50 474.00 341.00 242.00 94.00 86.50 138.00 417.50 539.00 634.50 4891.00
1992 619.50 531.50 481.00 399.00 231.00 103.00 85.00 76.00 228.00 352.00 568.50 776.00 4450.50
1993 853.00 670.00 529.00 430.50 209.50 193.00 144.50 95.50 192.00 353.50 663.50 699.50 5033.50
1994 606.50 662.50 536.00 410.00 271.00 204.00 83.50 35.50 123.50 412.50 659.00 707.50 4711.50
1995 654.00 569.50 579.50 449.50 250.00 172.00 63.50 154.00 101.50 415.00 492.50 696.00 4597.00
1996 757.50 646.00 564.50 423.50 406.00 218.00 91.00 67.50 242.00 432.00 627.50 799.50 5275.00
1997 722.50 600.00 615.00 446.50 248.50 183.50 86.50 42.50 130.50 388.50 512.00 662.00 4638.00
1998 704.50 530.50 538.50 442.00 304.00 175.00 88.00 64.00 135.00 390.50 518.00 750.50 4640.50
1999 689.50 608.00 626.50 484.00 407.50 260.00 148.50 95.00 190.00 429.00 517.00 686.50 5141.50
2000 756.50 611.50 597.50 438.50 365.00 188.50 108.50 126.50 197.50 382.00 634.50 723.00 5129.50
2001 662.50 644.00 0.00 z 489.50 334.00 255.00 142.50 111.50 182.00 429.50 553.00 723.00 4526.50
2002 695.00 604.00 702.00 472.50 373.00 147.50 93.50 94.15 d 178.00 423.50 513.00 664.00 4960.15
2003 601.00 585.00 550.50 468.50 345.50 131.50 50.00 48.00 122.00 344.00 661.50 709.50 4617.00
2004 716.00 566.50 525.50 354.00 272.00 127.50 47.50 49.00 212.00 365.00 575.50 679.00 4489.50
2005 694.00 620.00 506.50 356.50 245.00 153.00 48.00 46.50 212.50 378.20 a 636.00 703.00 4599.20
2006 639.00 672.50 602.00 0.00 z 319.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2232.50
Period of Record Statistics
MEAN 747.22 621.08 607.50 466.26 329.01 200.87 113.06 101.08 191.65 408.63 591.76 723.84 5085.68
S.D. 109.63 69.47 72.07 52.76 56.48 51.24 41.45 42.76 47.37 42.95 69.75 75.21 375.68
SKEW 1.49 0.41 0.26 0.37 -0.12 -0.03 -0.08 0.16 -0.48 0.41 1.20 0.67 0.45
MAX 1203.50 806.50 785.50 594.50 442.00 308.50 207.00 180.50 292.50 543.00 863.00 921.50 6099.33
MIN 601.00 487.00 480.50 354.00 209.50 93.50 14.00 24.50 77.50 334.00 486.00 599.00 4450.50
NO YRS 54 57 54 55 55 55 55 55 55 52 52 52 44