WILLAPA HARBOR, WASHINGTON

Monthly Total Heating Degree Days

(459291)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** 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
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 780.17 612.31 633.40 497.13 343.51 211.93 119.87 103.49 162.12 373.95 579.42 712.48 5135.20
S.D. 110.32 75.82 62.87 57.66 65.72 62.82 42.58 45.67 52.21 57.45 65.63 79.95 375.53
SKEW 0.70 -0.53 -0.10 0.47 -0.05 -0.09 0.45 -0.15 -0.33 -0.16 -0.06 0.12 -0.33
MAX 1080.50 780.00 746.00 621.50 464.00 346.07 218.50 196.50 252.00 481.50 718.00 855.00 5969.50
MIN 564.50 434.50 497.50 403.00 183.00 101.50 44.50 8.50 59.00 242.00 427.50 553.50 4109.50
NO YRS 30 31 31 31 30 32 30 31 30 32 31 31 28