GRAPEVIEW 3 SW, WASHINGTON

Monthly Total Heating Degree Days

(453284)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 199506
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 82.00 68.50 84.50 203.00 410.50 629.00 860.00 2337.50
1949 1027.00 759.50 583.50 410.50 201.50 163.00 70.00 39.00 112.78 c 473.50 468.00 756.50 5064.78
1950 1125.50 692.00 666.50 522.50 351.50 120.00 41.50 29.00 146.00 423.50 589.00 588.50 5295.50
1951 798.50 653.50 720.50 375.50 243.50 103.50 23.00 43.50 143.00 380.00 577.50 828.00 4890.00
1952 850.50 658.50 649.00 443.50 258.69 b 201.50 54.50 42.50 f 95.00 283.50 644.50 705.00 4844.19
1953 601.00 624.50 619.50 464.50 311.50 210.50 46.00 37.50 138.00 355.00 517.00 669.50 4594.50
1954 835.50 614.00 673.00 506.50 282.00 226.50 127.50 100.50 149.50 425.00 453.00 714.50 5107.50
1955 765.50 692.00 730.50 577.50 369.00 173.00 118.50 78.50 198.00 408.00 760.86 a 774.00 5645.36
1956 774.50 805.50 696.50 406.00 207.00 201.00 55.50 46.00 180.00 432.00 649.50 722.50 5176.00
1957 924.50 688.00 600.50 387.50 183.50 102.50 65.00 56.50 58.50 390.00 616.50 639.00 4712.00
1958 668.00 486.00 609.00 433.00 151.50 53.00 9.00 11.00 145.50 344.50 593.00 592.00 4095.50
1959 742.45 a 653.50 621.50 431.50 322.00 132.00 53.50 72.50 198.50 394.00 605.00 c 733.50 4959.95
1960 800.50 655.50 622.00 431.00 326.00 139.00 39.50 97.00 181.50 360.00 592.00 740.50 4984.50
1961 657.00 553.50 584.00 471.50 281.50 84.00 25.00 2.00 188.00 437.50 654.50 745.50 4684.00
1962 797.50 601.00 674.00 384.00 379.00 166.00 100.00 63.50 139.50 368.00 538.50 651.50 4862.50
1963 856.00 479.00 639.50 441.50 280.50 169.50 65.50 22.50 65.69 a 314.00 562.50 693.00 4589.19
1964 717.00 673.50 615.50 509.00 348.50 169.50 77.50 89.00 194.50 390.08 a 661.00 856.00 5301.08
1965 757.50 627.50 600.50 422.00 354.50 121.50 42.50 39.00 198.50 325.50 494.00 749.50 4732.50
1966 742.50 625.50 592.00 0.00 z 274.50 185.00 66.00 38.50 93.00 404.00 548.50 630.00 4199.50
1967 701.50 594.50 681.50 531.50 279.50 64.50 22.00 6.50 51.00 348.50 538.00 713.00 4532.00
1968 733.50 562.00 505.30 a 470.00 266.00 161.50 30.50 100.50 171.50 429.50 541.00 842.50 4813.80
1969 973.50 694.00 593.00 474.50 223.50 72.50 70.78 a 94.50 173.00 448.98 a 564.50 646.50 5029.27
1970 767.00 559.48 a 581.00 503.00 301.00 101.50 63.50 38.50 228.50 449.00 592.00 799.50 4983.98
1971 808.50 0.00 z 0.00 z 530.50 327.50 284.00 110.50 41.00 244.00 500.00 632.00 898.50 4376.50
1972 932.50 708.50 608.00 590.00 262.00 165.00 68.00 55.50 264.00 497.00 611.50 867.50 5629.50
1973 839.00 632.00 629.50 485.00 294.00 185.50 72.50 128.50 155.50 417.98 a 707.50 696.50 5243.48
1974 833.00 654.00 633.50 470.00 383.00 157.50 110.50 46.00 91.00 416.50 576.50 728.00 5099.50
1975 804.50 699.50 676.00 580.50 327.00 200.00 55.00 107.00 168.00 443.50 634.00 755.00 5450.00
1976 742.50 703.00 741.00 495.00 346.50 237.00 90.00 114.00 153.50 402.00 598.00 725.50 5348.00
1977 856.00 570.50 691.00 442.00 379.00 134.00 118.50 56.50 249.00 460.00 683.00 761.50 5401.00
1978 716.50 586.00 562.50 500.00 367.50 118.50 79.50 89.50 245.50 408.00 763.50 891.00 5328.00
1979 919.50 694.50 553.50 471.50 289.00 152.50 67.00 55.50 140.69 a 389.00 671.00 677.50 5081.19
1980 923.50 650.50 652.60 b 417.32 b 284.50 237.50 72.00 109.50 185.50 380.50 575.00 667.00 5155.42
1981 720.00 619.50 562.00 487.00 347.50 250.50 115.50 58.00 201.50 497.55 a 575.00 750.00 5184.05
1982 812.00 675.00 685.00 577.00 344.00 123.00 117.00 79.00 185.00 457.00 711.00 800.00 5565.00
1983 704.00 565.50 568.50 487.50 276.00 218.00 127.00 64.50 264.00 482.50 586.00 924.00 5267.50
1984 719.50 649.00 566.50 482.50 360.00 169.50 78.50 56.00 165.50 461.00 598.50 842.00 5148.50
1985 848.00 692.00 664.50 454.66 a 301.50 165.50 20.31 b 55.00 187.00 406.00 835.50 859.50 5489.47
1986 675.00 627.50 485.00 515.50 296.00 98.50 125.00 8.50 207.50 355.00 599.50 708.50 4701.50
1987 760.00 564.00 541.00 397.50 259.00 125.50 85.00 47.00 118.00 322.00 503.50 775.00 4497.50
1988 793.00 601.50 600.00 444.00 310.00 193.00 86.00 59.50 191.00 312.50 582.50 725.00 4898.00
1989 729.50 776.00 679.00 385.00 291.50 134.50 96.50 61.00 113.00 384.00 544.50 663.50 4858.00
1990 708.50 706.50 557.50 400.00 317.50 164.50 28.50 27.50 75.00 442.00 564.00 909.00 4900.50
1991 767.00 516.50 646.50 488.50 329.50 217.50 36.50 37.00 111.50 402.50 546.00 680.00 4779.00
1992 671.50 562.00 478.50 387.50 199.50 87.50 36.00 31.50 169.50 351.00 576.00 798.50 4349.00
1993 845.50 662.50 547.00 436.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2491.50
1994 0.00 z 715.00 544.00 409.00 273.00 186.00 52.00 22.50 76.50 406.00 691.50 745.00 4120.50
1995 650.50 586.00 0.00 z 0.00 z 235.00 159.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1631.00
Period of Record Statistics
MEAN 791.22 638.47 616.24 465.12 295.57 156.76 69.19 57.78 161.18 404.09 603.37 749.97 5010.44
S.D. 102.93 70.36 62.40 56.43 55.18 52.39 32.41 30.95 54.68 51.91 76.04 84.72 352.11
SKEW 0.95 -0.09 -0.11 0.42 -0.51 0.11 0.20 0.32 -0.15 -0.16 0.74 0.25 -0.29
MAX 1125.50 805.50 741.00 590.00 383.00 284.00 127.50 128.50 264.00 500.00 835.50 924.00 5645.36
MIN 601.00 479.00 478.50 375.50 151.50 53.00 9.00 2.00 51.00 283.50 453.00 588.50 4095.50
NO YRS 46 46 45 45 46 47 46 45 46 46 46 46 41