COUPEVILLE 1 S, WASHINGTON

Monthly Total Heating Degree Days

(451783)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 640.00 726.00 1366.00
1896 755.00 627.50 733.50 579.00 437.50 264.50 125.00 149.00 335.50 478.50 840.00 667.50 5992.50
1897 798.00 666.00 800.00 466.50 348.00 229.00 208.50 85.50 313.00 497.00 686.50 752.50 5850.50
1898 810.50 588.50 685.50 442.00 252.50 141.00 76.00 60.00 177.50 426.50 651.50 815.00 5126.50
1899 799.50 751.00 726.00 576.00 473.50 333.00 128.00 180.00 0.00 z 0.00 z 209.50 p 701.50 4668.50
1900 713.00 690.00 551.00 451.00 359.50 198.00 131.00 174.50 262.20 e 457.25 a 657.50 613.05 b 5258.00
1901 851.97 b 385.00 m 286.00 s 560.69 a 386.00 0.00 z 112.50 k 110.00 280.50 309.50 531.50 746.00 3776.16
1902 814.61 d 556.00 297.00 p 506.00 352.50 229.50 159.28 b 134.50 229.00 f 375.50 622.50 740.68 c 4491.07
1903 736.52 b 738.00 726.84 c 523.39 b 383.76 b 196.00 204.82 c 141.50 284.50 413.85 a 596.00 683.11 c 5628.29
1904 720.23 a 700.50 712.50 395.50 343.50 225.00 75.50 i 136.40 a 222.00 223.00 h 317.00 g 361.00 m 3455.63
1905 375.00 n 643.00 485.00 400.00 347.00 203.33 c 102.50 126.00 203.00 495.00 584.00 679.50 4268.33
1906 688.00 569.00 601.50 412.50 339.50 237.50 76.00 8.00 z 231.67 c 394.14 c 122.00 y 25.00 z 3549.81
1907 943.12 e 643.00 650.00 494.00 280.50 217.00 132.00 172.00 222.50 386.98 a 510.50 693.37 a 5344.97
1908 719.20 a 0.00 z 634.50 502.00 419.00 254.48 a 127.21 b 141.00 j 284.48 a 498.21 c 408.50 f 827.00 4266.09
1909 1034.50 635.19 a 685.62 a 512.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2867.80
1910 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
1911 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
1912 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
1913 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
1914 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
1915 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
1916 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
1917 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
1918 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
1919 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
1920 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
1921 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
1922 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
1923 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
1924 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
1925 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 523.38 a 627.50 613.50 1764.38
1926 545.00 i 572.44 a 556.50 403.00 322.50 162.69 d 93.50 117.00 311.50 409.00 555.00 776.50 4279.64
1927 807.00 660.50 681.00 553.50 419.50 186.50 82.67 a 156.00 321.21 a 0.00 z 0.00 z 943.50 4811.37
1928 758.97 b 709.50 605.50 526.50 321.00 226.50 96.00 162.50 324.31 a 484.00 595.50 818.50 5628.78
1929 1008.00 886.00 651.50 582.50 422.50 260.00 143.50 129.00 251.00 417.50 700.50 734.50 6186.50
1930 1123.50 646.50 643.50 429.50 401.00 255.50 160.00 93.00 241.00 517.50 674.00 743.50 5928.50
1931 664.00 666.50 599.50 456.50 305.00 219.50 108.50 127.00 245.00 479.50 745.00 773.00 5389.00
1932 861.50 752.50 619.50 494.00 404.00 213.50 198.50 141.00 246.50 430.00 556.50 876.50 5794.00
1933 837.50 811.00 649.50 531.00 440.00 296.00 182.50 113.50 310.50 459.50 611.00 708.50 5950.50
1934 685.50 612.50 579.50 404.50 339.50 222.50 151.00 96.50 255.50 435.50 539.00 747.50 5069.00
1935 811.68 a 634.00 740.50 569.50 378.50 221.00 148.50 145.00 221.00 533.50 723.50 691.00 5817.68
1936 761.50 954.00 721.50 458.00 331.00 192.50 134.00 86.00 297.00 422.00 685.00 741.00 5783.50
1937 1141.00 737.00 582.00 525.00 397.00 208.50 146.00 160.00 240.00 410.00 589.00 720.00 5855.50
1938 799.50 665.50 662.50 470.50 378.00 206.50 135.00 178.50 186.50 466.50 697.00 757.43 a 5603.43
1939 702.50 761.50 680.00 484.50 375.00 0.00 z 147.50 118.00 241.50 482.50 496.50 604.50 5094.00
1940 717.50 629.20 a 550.00 436.00 294.50 168.50 123.50 95.00 180.00 361.50 721.00 694.00 4970.70
1941 696.00 587.00 518.50 405.50 331.50 178.50 61.50 114.50 280.00 436.00 585.00 743.50 4937.50
1942 804.00 173.00 t 12.50 z 468.00 359.00 232.00 94.50 83.50 239.50 424.00 672.00 718.50 4095.00
1943 992.00 649.19 a 685.00 420.00 a 393.00 239.00 160.50 130.50 204.50 416.50 604.66 a 780.50 5675.34
1944 726.00 687.00 673.00 474.00 368.00 238.50 110.00 143.00 179.00 383.50 593.00 844.50 5419.50
1945 745.50 642.00 673.00 535.00 310.50 232.00 122.00 140.50 297.50 447.50 662.50 794.50 5602.50
1946 746.50 648.50 659.00 511.00 318.00 236.50 142.00 149.00 257.50 538.50 723.00 803.50 5733.00
1947 911.00 618.00 590.00 456.50 291.50 197.59 a 126.00 156.55 a 266.00 413.00 657.00 711.50 5394.64
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 176.50 159.50 178.00 294.50 526.00 668.50 885.50 2888.50
1949 1068.50 792.50 647.50 503.50 342.50 268.00 194.50 171.50 231.00 543.00 522.00 807.00 6091.50
1950 1248.00 693.00 706.00 540.00 445.00 235.00 179.50 150.50 273.00 495.00 662.00 625.50 6252.50
1951 846.00 704.00 781.50 511.00 386.50 205.50 144.50 167.00 251.00 472.00 630.00 867.00 5966.00
1952 847.00 687.00 697.50 526.50 398.50 323.00 181.00 153.50 233.50 409.00 685.50 699.00 5841.00
1953 642.50 646.50 647.00 529.00 386.50 308.50 162.00 134.00 239.50 423.00 511.50 682.00 5312.00
1954 888.50 622.00 708.00 561.50 387.50 291.50 194.00 170.00 229.00 475.00 498.50 739.87 a 5765.37
1955 784.00 725.50 781.00 577.50 466.50 288.00 220.50 183.00 297.00 499.50 798.00 868.00 6488.50
1956 811.50 838.00 722.00 459.50 310.00 279.50 107.00 127.10 a 263.00 476.50 682.50 767.00 5843.60
1957 1028.50 758.50 642.50 465.00 249.50 168.50 160.50 95.50 118.00 436.00 652.50 678.50 5453.50
1958 660.00 520.50 638.50 454.66 a 201.50 73.50 16.50 22.00 172.00 380.00 671.50 631.00 4441.66
1959 777.00 691.50 629.00 466.00 351.00 178.50 88.35 a 147.00 266.00 449.50 677.00 766.00 5486.85
1960 810.50 710.50 683.00 481.50 362.50 208.00 80.00 143.00 264.50 414.00 646.00 768.00 5571.50
1961 697.00 580.50 602.50 499.00 322.00 138.50 83.50 64.00 230.00 490.50 730.50 785.50 5223.50
1962 831.00 675.50 728.50 507.50 434.50 226.00 126.00 143.50 219.50 449.00 601.00 729.50 5671.50
1963 969.50 512.50 639.00 536.00 329.50 242.00 136.50 111.50 191.00 409.00 631.50 730.50 5438.50
1964 749.00 719.00 685.50 567.00 445.50 318.50 178.50 151.00 302.00 557.00 762.00 918.50 6353.50
1965 821.50 666.50 689.50 502.50 432.00 246.50 139.50 137.00 308.50 382.50 534.50 775.00 5635.50
1966 760.00 628.00 642.50 500.50 387.00 243.50 164.00 136.50 188.50 475.50 595.50 642.50 5364.00
1967 713.50 612.00 687.00 568.50 372.50 156.50 134.50 62.00 143.00 386.50 607.00 767.50 5210.50
1968 779.50 620.00 573.50 536.50 341.00 240.00 81.50 130.50 235.50 460.00 577.00 893.50 5468.50
1969 1030.50 685.00 635.00 514.00 320.00 134.50 142.50 177.00 224.50 461.26 b 602.00 679.00 5605.26
1970 766.00 594.50 634.00 546.00 399.00 193.50 126.00 126.00 297.00 513.50 629.50 805.00 5630.00
1971 797.50 672.00 718.00 534.50 390.50 287.00 148.00 80.00 266.50 497.00 609.00 875.50 5875.50
1972 918.50 708.00 611.50 582.00 306.50 235.50 136.00 128.00 325.50 540.00 626.50 872.00 5990.00
1973 839.00 649.50 624.00 520.00 360.00 226.50 152.50 167.50 207.50 467.00 688.00 689.00 5590.50
1974 831.50 635.00 636.00 507.00 426.00 243.00 194.00 120.50 165.00 461.50 590.50 683.50 5493.50
1975 803.00 689.50 0.00 z 579.00 386.50 271.50 136.00 180.00 251.00 465.00 642.00 758.50 5162.00
1976 741.50 709.50 741.50 499.50 408.00 303.50 165.00 194.50 224.00 482.50 643.50 679.00 5792.00
1977 870.50 559.50 667.50 495.00 421.00 235.00 175.50 80.00 290.50 513.50 680.50 789.50 5778.00
1978 749.50 591.00 584.50 495.00 402.50 149.50 125.50 120.00 258.00 466.50 762.50 885.00 5589.50
1979 985.50 691.00 586.00 476.00 333.00 241.00 113.50 127.50 159.50 417.50 679.00 616.00 5425.50
1980 931.50 627.50 643.00 460.50 372.52 a 278.50 175.50 169.50 278.00 427.50 576.00 668.00 5608.02
1981 653.00 638.00 559.00 511.00 368.50 271.00 145.50 94.00 238.50 509.00 587.50 756.50 5331.50
1982 805.50 675.00 686.00 576.50 394.50 166.50 180.00 142.00 225.50 470.00 732.00 786.00 5839.50
1983 659.00 547.50 529.00 489.00 288.50 216.50 156.00 104.00 284.00 481.00 584.00 979.60 a 5318.10
1984 729.50 597.50 546.00 512.00 394.00 263.00 161.00 116.00 257.50 500.00 604.50 904.50 5585.50
1985 869.00 706.50 674.00 506.50 360.50 240.50 82.00 132.50 305.50 452.60 a 930.00 867.00 6126.60
1986 621.00 673.50 543.00 540.00 358.00 202.50 193.00 75.00 242.50 438.50 639.00 747.00 5273.00
1987 762.00 575.50 562.00 443.00 347.00 199.00 162.50 136.00 216.50 429.00 524.50 789.50 5146.50
1988 787.50 635.50 645.50 497.50 353.50 248.50 155.50 126.00 261.50 405.50 587.50 733.50 5437.50
1989 770.00 861.00 693.00 421.00 366.00 185.00 146.50 134.50 209.00 463.00 574.00 704.00 5527.00
1990 722.50 732.00 617.00 453.00 355.00 232.50 82.50 58.00 183.00 457.50 572.00 924.00 5389.00
1991 817.00 530.00 677.50 497.00 361.00 276.00 122.00 119.50 210.50 487.00 574.00 669.50 5341.00
1992 663.50 561.50 529.00 426.50 293.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2473.50
1993 0.00 z 706.50 0.00 z 0.00 z 225.00 192.00 147.00 124.50 288.00 412.00 736.50 755.00 3586.50
1994 643.00 699.00 591.50 438.00 308.50 202.00 0.00 z 0.00 z 51.50 w 72.00 z 677.00 747.62 a 4306.62
1995 709.50 627.93 a 611.50 0.00 z 277.00 182.00 75.50 0.00 z 160.50 448.98 a 517.00 740.50 4350.41
1996 816.33 a 701.50 614.83 a 438.50 0.00 z 0.00 z 129.50 115.00 306.00 502.50 680.00 842.00 5146.17
1997 761.00 663.00 643.50 485.50 273.00 211.50 124.00 66.50 176.00 425.00 535.00 691.00 5055.00
1998 714.50 536.50 550.00 461.00 325.00 187.50 32.00 79.00 72.00 o 407.00 548.00 573.00 i 3840.50
1999 703.00 635.00 626.50 471.50 382.50 262.50 150.35 a 116.00 200.00 448.50 540.00 737.50 5273.35
2000 768.50 642.46 c 578.00 429.00 357.00 209.00 105.50 91.00 202.00 407.43 c 691.03 a 774.48 a 5255.41
2001 715.50 722.50 617.00 472.00 325.50 232.50 0.00 z 101.50 170.17 a 447.00 552.50 735.50 5091.67
2002 714.00 614.50 707.00 450.50 340.00 142.00 94.50 82.50 189.00 447.50 530.00 689.00 5000.50
2003 622.50 616.50 535.50 457.50 304.00 122.00 39.00 39.50 118.00 334.00 675.00 710.50 4574.00
2004 713.50 572.50 511.50 308.50 251.00 130.50 44.50 42.00 202.50 363.00 570.50 683.00 4393.00
2005 712.50 621.00 501.50 393.50 213.50 162.50 65.00 46.00 184.50 347.50 634.50 710.00 4592.00
2006 640.00 658.50 589.50 451.50 316.00 135.50 89.00 92.50 167.50 427.50 642.00 732.00 4941.50
2007 797.00 582.50 548.00 437.00 304.00 219.50 55.00 80.50 227.00 460.50 636.00 770.50 5117.50
2008 802.50 641.50 665.50 543.00 334.00 274.00 149.00 100.50 230.50 447.50 514.00 884.50 5586.50
2009 798.00 688.00 678.00 465.00 323.50 145.50 64.00 89.50 170.00 420.50 572.00 843.50 5257.50
2010 597.50 523.00 549.50 449.00 360.00 215.50 98.00 130.50 203.50 395.50 660.50 692.50 4875.00
2011 758.00 718.00 593.50 543.00 386.50 230.50 135.50 95.00 166.00 443.50 651.00 764.50 5485.00
2012 778.00 629.50 667.50 441.00 333.50 282.00 179.50 98.00 213.00 444.00 572.00 735.50 5373.50
2013 823.50 621.50 636.50 17.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 30.00 z 2081.50
Period of Record Statistics
MEAN 797.25 660.29 637.53 489.03 353.87 220.58 130.76 121.91 237.04 448.62 629.69 756.25 5503.66
S.D. 118.91 77.24 66.54 52.82 53.89 48.92 42.34 36.96 49.52 48.42 76.96 79.55 407.61
SKEW 1.28 0.89 -0.04 -0.29 -0.35 -0.20 -0.37 -0.36 -0.13 -0.17 0.78 0.52 -0.34
MAX 1248.00 954.00 800.00 582.50 473.50 333.00 220.50 194.50 335.50 557.00 930.00 979.60 6488.50
MIN 597.50 512.50 485.00 308.50 201.50 73.50 16.50 22.00 118.00 309.50 496.50 604.50 4393.00
NO YRS 98 98 96 98 98 96 95 95 95 96 96 98 80