WILLAPA HARBOR, WASHINGTON

Monthly Total Heating Degree Days

(459291)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197912
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
1895 0.00 z 0.00 z 563.00 443.00 330.50 166.00 117.00 111.50 311.00 246.50 598.00 0.00 z 2886.50
1896 688.00 553.50 693.50 579.00 412.50 174.00 42.50 0.00 z 0.00 z 0.00 z 649.00 568.00 4360.00
1897 743.00 608.50 746.00 359.00 224.00 190.50 148.00 48.50 201.50 369.50 620.00 673.50 4932.00
1898 766.00 570.50 671.50 492.00 324.00 193.00 121.00 137.50 133.50 402.50 610.00 724.37 a 5145.87
1899 734.81 d 694.00 689.00 535.50 509.50 320.89 b 116.00 177.50 135.00 431.00 379.00 641.50 5363.71
1900 617.50 487.50 f 431.50 379.50 319.82 a 189.00 68.50 128.50 204.50 419.00 558.50 569.00 3885.32
1901 766.50 686.50 649.00 578.00 421.60 a 325.50 235.50 121.50 247.00 235.50 474.00 689.00 5429.60
1902 761.50 542.00 653.50 138.00 v 317.00 242.50 153.50 131.50 204.50 304.00 576.00 707.50 4593.50
1903 663.50 674.50 693.50 572.50 392.09 d 210.00 176.00 131.15 e 263.50 297.17 b 551.50 687.00 5312.42
1904 724.00 744.00 750.00 400.00 415.00 257.00 114.00 0.00 z 78.10 a 216.48 a 308.00 658.50 4665.09
1905 707.83 a 504.00 a 213.50 l 315.00 344.50 217.50 93.00 123.50 29.00 u 280.50 o 0.00 z 716.88 c 3022.21
1906 671.00 532.50 618.89 c 348.00 f 320.91 d 183.00 j 3.21 b 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2146.51
1907 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 53.00 k 129.17 a 446.50 670.08 e 1245.74
1908 460.00 k 675.80 a 435.50 j 460.00 445.48 d 110.50 u 94.55 a 188.67 b 102.50 i 328.00 f 451.80 e 700.37 d 3016.68
1909 946.00 668.37 a 601.50 561.21 a 348.50 198.50 161.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3485.58
1910 400.00 r 497.00 h 548.00 515.50 336.00 328.27 d 167.00 105.00 m 236.00 377.00 475.00 f 504.50 h 2507.77
1911 514.50 k 722.50 582.00 613.00 458.50 313.00 172.00 198.29 b 284.50 373.50 588.50 708.00 5013.79
1912 680.50 597.00 631.50 555.50 0.00 z 234.50 146.00 123.50 196.50 486.50 593.00 737.00 4981.50
1913 879.50 687.50 733.50 572.00 460.00 281.00 0.00 z 135.00 199.00 490.50 563.00 704.50 5705.50
1914 683.00 593.50 535.50 454.00 283.00 283.00 150.50 143.50 276.50 312.50 546.00 816.00 5077.00
1915 758.50 604.50 454.67 a 406.50 345.00 227.00 133.50 67.00 171.00 227.50 l 655.50 746.00 4569.17
1916 1069.00 601.00 659.00 510.00 482.00 279.50 214.50 177.00 218.08 d 462.00 713.00 872.50 6257.58
1917 855.50 734.50 799.50 449.50 g 483.50 370.50 208.50 32.50 x 244.00 423.84 b 486.00 590.00 5195.84
1918 651.50 733.00 732.00 556.00 547.00 253.00 137.50 118.50 102.50 316.00 0.00 z 0.00 z 4147.00
1919 0.00 z 0.00 z 0.00 z 455.50 369.00 242.00 131.00 101.50 167.50 434.50 595.00 826.00 3322.00
1920 732.50 625.50 617.00 577.50 458.00 265.00 125.00 97.50 232.00 432.50 616.00 716.00 5494.50
1921 808.00 669.00 663.00 548.50 441.50 254.00 224.50 167.00 285.00 383.50 589.50 844.00 5877.50
1922 934.50 780.00 790.00 622.50 422.00 219.50 167.00 132.00 175.00 356.50 652.00 858.00 6109.00
1923 763.00 755.50 648.00 453.00 373.50 218.00 98.00 36.50 147.50 339.00 493.50 727.00 5052.50
1924 755.50 569.50 662.50 530.50 316.00 234.00 150.00 151.50 202.00 419.00 608.00 880.50 5479.00
1925 715.00 589.50 653.50 471.50 303.50 245.00 115.50 129.50 170.50 371.00 548.50 589.00 b 4902.00
1926 658.50 496.00 303.50 j 270.00 b 262.00 0.00 z 59.93 a 39.86 c 202.24 a 273.32 a 348.00 f 427.00 m 2261.85
1927 471.50 j 574.00 463.00 h 491.11 c 399.50 143.00 74.50 75.50 137.50 254.50 f 227.00 o 768.59 b 2663.70
1928 645.63 e 620.50 533.50 397.50 g 262.00 225.00 e 85.00 g 118.00 239.50 402.00 573.50 747.88 c 4367.51
1929 905.50 788.50 638.50 591.50 396.50 234.50 120.50 94.50 147.00 324.50 606.00 702.00 5549.50
1930 1058.00 611.00 560.00 395.50 446.00 261.00 184.50 76.00 201.50 412.00 555.00 692.00 5452.50
1931 582.36 c 576.07 a 558.50 407.50 249.00 206.00 89.50 107.50 203.50 381.30 a 649.50 733.50 4744.23
1932 799.00 697.50 586.50 463.00 395.00 228.62 a 227.33 d 155.50 180.50 348.50 491.50 832.35 a 5405.30
1933 803.50 751.50 638.60 a 508.00 501.00 257.50 179.00 91.45 a 277.22 c 349.50 521.00 587.45 a 5465.72
1934 610.50 447.50 451.00 306.00 265.50 214.50 167.92 a 93.00 228.00 326.00 499.00 648.50 4257.42
1935 749.00 548.50 739.00 501.72 a 360.50 230.00 178.50 126.50 169.50 417.50 642.50 669.00 5332.22
1936 671.00 787.50 701.50 411.00 0.00 z 0.00 z 90.00 40.00 166.00 252.50 521.00 656.50 4297.00
1937 980.00 658.50 518.50 545.00 332.50 175.00 98.50 91.00 142.00 229.50 481.61 b 623.62 a 4875.72
1938 685.00 605.00 611.00 445.50 398.00 270.00 140.50 244.50 158.50 366.50 600.50 699.50 5224.50
1939 686.00 693.00 606.50 396.50 321.00 251.00 121.50 78.00 148.00 331.00 431.90 a 553.00 4617.40
1940 648.00 561.00 485.00 382.00 243.50 128.50 93.00 a 48.00 98.50 252.81 b 604.00 620.50 4164.81
1941 614.50 488.50 399.00 380.50 347.50 265.00 0.00 z 0.00 z 201.50 312.00 492.50 679.00 4180.00
1942 717.50 603.75 d 617.00 432.50 343.00 224.00 69.00 68.00 155.50 290.00 607.50 666.50 4794.25
1943 881.00 534.00 641.50 419.00 398.50 243.50 134.50 126.00 125.00 354.00 505.50 705.50 5068.00
1944 704.50 638.50 628.00 470.00 349.50 243.50 135.50 111.00 126.00 240.00 550.50 743.00 4940.00
1945 654.00 608.50 660.50 545.00 313.50 232.50 101.00 127.50 221.00 362.50 617.50 726.00 5169.50
1946 718.50 640.50 635.00 511.00 301.50 260.00 134.50 130.00 205.50 488.00 662.00 725.00 5411.50
1947 853.00 532.50 508.00 390.00 262.50 207.50 118.00 124.00 166.00 372.00 577.00 663.50 4774.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 139.66 a 140.00 150.50 209.00 417.50 649.50 848.50 2554.66
1949 1015.00 706.50 597.50 467.50 313.50 257.00 176.50 140.00 165.00 481.50 427.50 769.00 5516.50
1950 1080.50 672.00 697.00 558.00 448.50 202.50 145.00 101.50 211.15 d 479.00 609.50 562.00 5766.65
1951 797.00 618.50 739.00 428.00 355.50 210.00 140.00 142.00 196.00 380.50 578.28 a 812.00 5396.78
1952 834.00 664.00 687.00 492.50 376.00 286.50 150.00 139.50 143.50 242.00 609.64 b 699.50 5324.14
1953 498.50 f 600.00 619.50 496.50 374.67 b 264.00 110.50 f 115.00 144.00 f 308.50 497.00 649.89 c 3925.07
1954 830.05 b 583.00 692.00 548.00 338.00 307.00 218.50 175.50 177.50 368.00 445.00 710.50 5393.05
1955 751.50 666.00 746.00 621.50 464.00 276.50 218.00 156.00 227.00 393.50 695.00 754.50 5969.50
1956 762.60 a 780.00 685.00 403.00 261.50 256.50 102.00 91.50 185.00 426.00 582.00 711.00 5246.10
1957 909.50 641.50 591.00 430.50 276.50 190.50 132.00 111.50 59.00 358.00 570.50 640.50 4911.00
1958 615.00 448.50 613.50 447.00 183.00 108.00 44.50 42.50 158.50 305.50 590.00 553.50 4109.50
1959 702.00 630.00 596.00 449.00 339.50 201.50 101.50 136.40 a 207.00 341.50 548.00 697.00 4949.40
1960 776.00 647.00 611.00 437.00 389.00 214.50 108.00 123.00 165.00 332.50 561.50 686.00 5050.50
1961 564.50 537.00 585.00 522.50 278.50 i 139.50 69.00 47.00 192.00 417.00 655.00 710.50 4439.00
1962 753.00 574.00 664.50 466.50 429.50 257.50 165.00 102.00 144.00 334.50 509.00 638.00 5037.50
1963 843.00 434.50 610.50 474.00 314.00 225.00 128.50 70.00 79.00 310.00 553.00 640.50 4682.00
1964 689.00 633.50 632.00 554.00 419.00 233.00 150.50 126.50 182.00 345.50 631.50 831.00 5427.50
1965 754.50 614.96 a 558.50 476.00 437.00 346.07 b 0.00 z 0.00 z 0.00 z 312.00 0.00 z 619.00 h 3499.03
1966 666.50 635.50 636.00 451.00 348.50 215.00 113.00 77.50 113.00 384.50 555.00 630.00 4825.50
1967 677.50 610.50 693.50 587.00 336.50 108.00 56.50 8.50 67.00 359.50 542.00 750.50 4797.00
1968 746.00 525.00 551.50 530.00 309.00 205.00 71.00 114.00 159.00 400.00 526.00 809.50 4946.00
1969 926.50 680.00 583.50 500.50 256.00 104.50 115.00 132.00 171.00 417.00 569.00 658.00 5113.00
1970 722.50 515.50 600.00 563.00 338.50 140.00 107.50 89.00 245.50 431.00 573.50 778.50 5104.50
1971 738.50 639.00 714.50 518.00 324.00 308.50 118.50 43.00 216.00 423.00 579.00 805.50 5427.50
1972 831.50 661.00 571.50 592.50 281.50 182.00 76.00 66.00 252.00 442.50 571.00 825.00 5352.50
1973 784.00 591.50 631.00 489.00 304.50 217.00 125.00 196.50 146.00 404.00 675.00 663.00 5226.50
1974 821.00 649.50 628.00 479.50 410.00 210.50 153.00 83.50 90.50 368.50 554.50 678.50 5127.00
1975 756.50 648.50 698.50 593.50 346.00 246.50 113.50 157.58 a 146.50 427.00 597.50 697.50 e 5429.08
1976 700.50 697.00 704.00 514.00 325.50 252.41 a 112.50 122.00 127.50 347.50 525.50 675.00 5103.41
1977 795.50 524.50 679.50 445.00 436.00 177.50 111.00 63.00 216.50 422.50 669.50 690.50 5231.00
1978 662.50 502.00 497.50 436.00 289.52 c 101.50 65.00 61.00 131.50 288.50 718.00 855.00 4608.02
1979 899.00 651.00 521.50 440.50 280.72 d 198.00 69.50 24.28 a 81.00 298.00 594.50 656.50 4714.51
Period of Record Statistics
MEAN 764.55 622.28 625.94 483.41 358.22 227.67 127.83 111.21 179.87 360.01 566.51 707.05 5163.19
S.D. 112.99 81.06 81.14 75.71 73.15 55.09 46.36 44.71 54.26 71.48 74.42 79.39 421.22
SKEW 0.89 -0.05 -0.42 -0.32 0.23 -0.13 0.16 0.10 -0.01 -0.49 -0.68 0.26 -0.04
MAX 1080.50 788.50 799.50 622.50 547.00 370.50 235.50 244.50 311.00 490.50 718.00 880.50 6257.58
MIN 564.50 434.50 399.00 270.00 183.00 101.50 3.21 8.50 59.00 129.17 308.00 553.00 4109.50
NO YRS 76 79 78 79 80 80 79 76 77 78 77 78 58