LONGVIEW, WASHINGTON

Monthly Total Heating Degree Days

(454769)

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
1925 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 75.00 91.00 148.50 365.50 593.00 642.00 1915.00
1926 745.00 523.50 463.00 283.50 322.00 128.00 68.50 49.50 235.00 286.50 509.00 739.00 4352.50
1927 787.00 590.00 606.50 423.00 275.00 62.50 77.00 58.00 173.00 361.00 558.10 a 892.50 4863.60
1928 834.50 655.50 497.50 474.50 198.52 e 131.50 g 70.00 105.00 169.50 376.50 603.50 844.75 c 4829.77
1929 977.05 c 868.00 606.00 542.00 339.00 181.50 97.00 69.00 167.22 c 320.00 693.00 695.00 5554.78
1930 1222.00 585.50 559.50 364.00 413.00 197.00 127.00 71.00 157.00 461.00 635.00 822.50 5614.50
1931 699.00 647.00 573.50 428.00 234.50 205.50 73.50 105.50 198.50 408.00 722.00 821.50 5116.50
1932 857.67 a 725.50 597.00 444.00 362.00 158.50 159.13 a 78.50 159.50 356.00 536.00 960.00 5393.80
1933 822.50 770.50 619.00 481.50 417.50 212.00 107.50 62.52 a 240.50 104.50 r 605.50 645.50 4984.52
1934 639.00 500.00 429.50 282.50 224.00 179.00 101.00 38.00 176.00 330.00 504.50 705.25 a 4108.75
1935 835.00 606.00 732.00 480.50 328.00 166.50 122.50 87.00 133.00 467.00 751.50 817.00 5526.00
1936 727.98 a 897.50 691.00 374.00 243.50 135.50 90.00 61.00 173.28 a 332.00 670.50 726.50 5122.76
1937 1122.00 723.00 555.50 550.00 338.00 124.00 61.50 104.00 134.00 300.50 509.50 723.00 5245.00
1938 790.00 675.50 646.00 437.00 323.00 145.00 65.50 110.00 70.00 382.00 714.00 786.00 5144.00
1939 741.50 764.00 623.00 442.50 321.00 228.00 123.00 55.00 138.00 382.00 575.50 650.50 5044.00
1940 780.00 613.00 546.00 436.00 243.50 145.50 55.50 50.50 106.50 317.00 717.00 725.00 4735.50
1941 740.00 580.50 457.50 405.50 315.50 174.00 42.00 57.50 218.50 407.50 550.00 739.00 4687.50
1942 899.00 657.50 671.50 430.00 321.50 211.50 56.83 a 54.50 137.50 377.50 641.50 710.00 5168.83
1943 986.00 620.50 694.00 401.50 383.50 191.00 60.50 89.00 89.50 367.50 571.50 788.50 5243.00
1944 824.00 698.00 660.50 462.00 345.00 173.50 53.00 81.50 108.00 261.00 614.00 868.00 5148.50
1945 756.00 640.00 704.00 535.00 262.00 226.00 55.00 63.00 276.50 388.00 634.50 766.50 5306.50
1946 772.00 678.50 628.00 474.00 241.50 206.00 73.00 67.50 174.50 496.00 717.00 779.50 5307.50
1947 947.00 599.00 531.50 378.00 239.50 145.50 45.50 72.00 138.00 359.00 569.50 694.00 4718.50
1948 799.50 752.50 677.00 528.00 331.00 98.50 75.50 75.50 194.00 393.00 671.00 872.00 5467.50
1949 1125.00 758.50 604.50 456.50 231.50 193.45 a 115.00 84.50 107.50 480.50 442.50 779.50 5378.95
1950 1140.50 726.00 672.70 a 518.50 381.00 160.00 75.50 53.22 a 146.90 a 457.00 579.50 613.00 5523.81
1951 814.00 651.50 758.50 382.00 314.00 117.50 55.00 82.50 123.00 384.50 609.00 853.50 5145.00
1952 942.00 707.50 702.50 468.50 355.00 214.50 55.00 55.00 107.00 249.00 728.50 734.00 5318.50
1953 583.50 625.50 628.50 500.50 345.00 233.50 63.00 56.00 131.50 363.50 512.50 701.00 4744.00
1954 865.00 627.00 706.00 528.50 305.57 c 263.50 148.00 89.50 151.50 410.00 482.50 775.50 5352.57
1955 803.50 702.00 785.50 596.50 399.50 194.50 142.00 91.50 202.50 344.50 742.00 779.00 5783.00
1956 771.50 856.00 670.00 346.11 c 222.00 226.50 82.50 78.00 152.50 416.00 668.50 756.50 5246.11
1957 1015.50 684.00 602.95 a 425.50 229.00 127.50 80.00 89.00 56.38 a 386.00 667.00 681.50 5044.33
1958 674.00 477.50 619.00 458.50 174.00 95.50 14.50 26.50 155.00 292.50 564.50 615.00 4166.50
1959 704.50 633.50 574.00 406.00 359.50 162.50 67.00 95.00 192.00 326.00 596.50 744.00 4860.50
1960 853.00 645.00 601.50 460.50 374.00 168.00 61.48 a 97.00 164.00 342.50 588.50 777.00 5132.48
1961 648.00 510.50 553.50 500.50 315.00 108.50 42.00 21.00 205.50 420.50 692.50 746.50 4764.00
1962 821.50 589.00 636.50 421.00 421.00 196.00 119.50 83.50 127.00 326.00 529.00 702.00 4972.00
1963 918.00 461.50 608.50 484.00 305.00 214.00 118.50 53.50 68.00 329.00 551.50 762.50 4874.00
1964 727.50 677.00 656.00 535.50 401.00 222.00 106.00 115.50 172.00 356.00 664.50 858.00 5491.00
1965 765.50 619.00 580.00 426.50 389.50 219.00 62.50 51.00 203.50 296.00 506.00 797.00 4915.50
1966 786.00 657.00 628.00 426.00 321.50 183.00 90.00 53.50 91.00 391.00 555.00 648.50 4830.50
1967 674.50 620.00 672.00 564.50 305.50 88.00 34.50 15.50 50.50 346.00 554.50 763.00 4688.50
1968 781.00 561.50 530.00 523.50 321.50 181.50 63.00 104.00 166.50 429.50 566.00 858.00 5086.00
1969 1032.00 705.50 584.00 478.50 260.50 78.00 84.50 117.00 159.50 439.50 555.50 714.00 5208.50
1970 785.50 548.50 605.50 555.00 347.00 135.50 89.00 64.50 225.00 449.00 588.00 795.50 5188.00
1971 790.50 641.00 723.00 519.00 316.50 254.00 90.50 28.50 209.00 465.50 605.50 837.00 5480.00
1972 872.00 698.00 575.50 580.00 276.50 167.00 45.50 41.00 245.50 431.50 572.00 889.00 5393.50
1973 822.50 615.00 590.00 455.50 293.50 201.00 74.00 140.00 145.50 397.50 662.00 666.50 5063.00
1974 891.50 646.00 635.50 481.00 411.50 165.52 a 110.00 54.00 73.00 360.00 0.00 z 682.00 4510.02
1975 770.50 681.50 670.00 599.00 335.00 206.00 66.00 123.50 106.50 393.50 614.50 730.00 5296.00
1976 738.50 698.50 707.50 516.00 329.50 247.00 96.00 104.00 129.00 375.50 557.50 776.50 5275.50
1977 880.00 577.50 676.50 435.00 397.50 160.50 122.50 47.50 188.00 389.00 647.50 712.00 5233.50
1978 713.50 568.50 503.50 447.50 362.50 106.00 63.00 63.50 167.00 329.50 764.00 882.00 4970.50
1979 1030.00 677.00 528.00 436.50 275.00 141.50 58.50 45.50 71.00 288.50 626.50 647.00 4825.00
1980 933.50 658.50 618.50 392.00 318.00 207.50 46.00 90.50 142.50 325.00 541.00 668.50 4941.50
1981 670.50 601.00 523.00 447.00 318.00 192.00 82.00 28.50 116.50 399.00 539.00 719.00 4635.50
1982 843.00 651.00 627.00 541.50 308.00 123.50 79.50 64.00 134.50 354.50 671.50 765.00 5163.00
1983 684.00 523.00 495.00 432.00 239.50 168.50 91.00 30.50 197.50 409.50 504.50 924.50 4699.50
1984 722.00 615.50 507.50 502.00 374.00 218.50 0.00 z 56.50 151.50 449.00 599.50 870.50 5066.50
1985 902.50 732.00 665.00 415.50 311.00 180.00 14.50 63.50 203.00 412.00 852.50 950.00 5701.50
1986 691.00 615.50 461.00 480.50 328.00 91.50 102.50 21.50 189.00 299.00 560.00 761.50 4601.00
1987 782.00 556.50 536.00 385.50 243.50 136.00 83.00 54.00 104.50 284.00 509.00 813.50 4487.50
1988 798.50 607.50 584.00 429.00 330.00 189.50 82.00 80.50 177.00 269.00 555.50 744.00 4846.50
1989 741.00 835.50 651.00 346.00 280.00 124.50 93.00 61.50 94.00 348.50 533.00 730.50 4838.50
1990 712.50 708.00 518.00 365.50 314.00 168.50 34.00 40.50 64.00 422.50 557.50 963.00 4868.00
1991 819.00 474.00 644.50 467.50 367.00 217.50 55.50 50.00 102.00 355.50 557.00 723.00 4832.50
1992 668.00 493.00 427.00 371.50 222.00 105.50 30.50 42.00 174.50 316.00 594.50 795.50 4240.00
1993 908.00 700.50 550.00 438.50 181.50 142.50 110.00 65.00 124.00 289.50 741.00 761.00 5011.50
1994 639.00 716.00 480.50 392.50 247.50 171.50 61.50 28.00 71.50 415.00 705.00 730.00 4658.00
1995 674.50 542.50 557.00 477.00 219.50 145.00 41.00 83.50 49.50 367.00 476.00 712.50 4345.00
1996 719.00 669.50 567.00 400.50 0.00 z 184.50 47.00 62.00 198.00 412.50 609.50 731.00 4600.50
1997 758.50 615.50 600.00 465.50 205.00 0.00 z 48.00 9.50 0.00 z 379.50 482.00 756.50 4320.00
1998 689.50 524.00 531.00 453.50 321.00 128.50 27.50 40.00 77.50 362.50 504.50 776.50 4436.00
1999 305.00 r 0.00 z 144.00 x 480.00 390.08 a 230.17 a 90.50 34.00 134.50 353.50 484.50 680.00 2877.26
2000 781.00 622.50 618.50 372.00 273.50 137.00 53.00 55.00 130.00 358.50 685.50 785.00 4871.50
2001 748.00 659.00 574.50 515.50 268.50 204.00 0.00 z 36.17 a 114.83 a 0.00 z 523.00 744.50 4387.99
2002 743.00 602.00 668.50 423.50 347.50 0.00 z 42.00 38.50 92.00 342.50 525.00 673.00 4497.50
2003 616.50 0.00 z 525.00 428.00 291.50 111.00 26.50 20.00 89.50 248.50 650.00 710.50 3717.00
2004 816.00 577.00 482.00 333.50 206.50 97.50 14.00 10.00 121.00 286.50 585.50 686.50 4216.00
2005 694.00 615.50 440.00 399.00 193.00 141.00 25.00 14.00 156.00 299.00 625.50 750.00 4352.00
2006 607.00 636.00 551.50 349.00 215.50 87.00 35.00 33.00 87.00 341.00 575.50 763.50 4281.00
2007 661.50 f 571.50 447.50 393.50 249.50 112.50 10.00 25.00 134.00 387.00 587.50 61.50 z 2918.00
2008 561.00 k 593.00 626.50 497.00 237.50 201.00 20.50 39.50 83.00 346.50 474.00 844.50 3963.00
2009 786.00 653.00 638.50 415.00 237.50 72.50 19.00 31.00 80.50 350.50 536.50 894.00 4714.00
2010 590.50 492.00 504.00 431.00 327.50 166.00 56.00 47.50 80.50 306.50 595.00 684.50 4281.00
2011 716.00 693.50 584.00 540.50 354.00 154.50 53.50 17.50 64.00 333.00 617.00 793.50 4921.00
2012 756.50 628.50 625.00 353.00 264.50 158.00 27.50 24.00 81.50 337.90 a 513.75 b 708.87 a 4479.02
2013 843.72 a 598.37 a 532.17 a 8.00 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 1974.25
Period of Record Statistics
MEAN 801.16 639.52 594.47 449.69 303.27 165.39 70.12 61.10 140.55 364.18 596.91 762.12 4967.22
S.D. 126.00 85.92 78.57 66.31 61.79 46.08 32.70 28.83 50.54 54.69 79.41 78.18 395.94
SKEW 1.03 0.46 -0.11 -0.02 -0.09 -0.16 0.40 0.35 0.23 0.12 0.61 0.54 -0.25
MAX 1222.00 897.50 785.50 599.00 421.00 263.50 159.13 140.00 276.50 496.00 852.50 963.00 5783.00
MIN 583.50 461.50 427.00 282.50 174.00 62.50 10.00 9.50 49.50 248.50 442.50 613.00 4108.75
NO YRS 85 86 87 87 86 84 86 88 87 86 87 87 75