CENTRALIA, WASHINGTON

Monthly Total Heating Degree Days

(451276)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1931 651.50 610.50 560.00 378.00 192.50 170.00 26.50 62.50 175.50 407.00 711.50 768.00 4713.50
1932 828.73 a 710.00 580.50 427.00 331.00 133.00 128.00 74.00 151.50 338.50 533.00 868.50 5103.73
1933 835.00 790.50 635.00 479.50 397.00 233.50 113.00 66.00 293.00 466.50 617.00 599.50 5525.50
1934 612.50 496.50 405.50 248.00 201.00 133.00 53.00 22.00 156.00 335.00 500.00 711.00 3873.50
1935 807.55 a 597.00 706.50 464.00 283.50 141.00 109.00 65.00 128.50 429.00 717.00 743.50 5191.55
1936 702.00 872.50 665.50 347.50 222.00 105.00 47.50 33.50 175.50 320.50 657.50 694.50 4843.50
1937 1108.50 685.50 539.00 505.00 258.50 111.50 34.00 77.00 138.00 290.50 503.00 705.00 4955.50
1938 730.00 580.50 611.00 366.50 264.50 117.00 45.50 74.50 63.00 355.50 661.00 731.50 4600.50
1939 683.50 715.50 584.00 354.50 278.50 186.50 63.00 48.50 147.50 342.00 479.00 582.50 4465.00
1940 695.50 571.00 484.00 349.50 187.00 83.50 26.50 35.50 84.00 282.50 671.50 685.50 4156.00
1941 674.00 537.00 405.50 341.50 260.50 144.50 16.00 58.00 197.00 353.00 527.50 700.00 4214.50
1942 813.00 633.50 589.00 389.00 290.00 198.00 30.50 35.50 106.00 323.00 641.00 676.00 4724.50
1943 926.50 605.63 a 645.00 359.00 331.50 166.50 20.48 c 65.50 77.00 343.00 566.00 781.00 4887.11
1944 734.00 673.00 625.50 419.00 305.50 153.00 50.00 62.50 94.00 256.00 592.00 844.50 4809.00
1945 712.50 620.50 654.50 516.00 253.50 199.50 48.50 56.00 180.00 340.00 593.50 721.00 4895.50
1946 695.50 607.50 576.50 413.00 154.50 164.50 39.50 48.50 125.50 444.50 661.50 701.50 4632.50
1947 875.00 539.50 469.50 342.50 170.00 135.00 40.50 54.00 109.50 316.50 572.00 648.00 4272.00
1948 788.50 686.50 617.50 504.50 289.69 b 50.17 a 59.00 61.00 160.00 380.50 608.00 853.50 5058.86
1949 1098.50 710.00 560.50 376.50 177.50 153.50 87.50 68.50 125.50 497.00 383.00 0.00 z 4238.00
1950 1150.00 673.50 651.00 b 500.00 359.50 129.50 52.50 41.00 153.00 438.00 618.50 568.50 5335.00
1951 797.00 629.50 736.50 377.50 271.50 91.50 38.50 48.50 108.00 374.50 609.50 840.50 4923.00
1952 843.00 654.00 631.00 397.00 274.50 158.57 b 47.50 68.50 116.00 274.50 683.00 702.00 4849.57
1953 588.00 609.00 605.50 469.66 a 319.00 228.00 71.00 64.00 173.50 373.50 562.00 705.00 4768.16
1954 852.50 609.50 714.00 539.50 303.00 274.50 151.50 190.50 234.00 515.00 525.50 790.00 5699.50
1955 807.50 721.50 771.90 a 603.50 382.50 178.00 133.00 105.50 231.00 409.50 742.50 779.00 5865.40
1956 785.50 832.50 695.50 387.00 214.00 212.50 64.50 57.00 169.50 470.00 656.00 759.50 5303.50
1957 984.00 682.00 590.00 393.50 174.00 104.50 78.50 81.00 61.50 398.00 632.50 674.50 4854.00
1958 655.00 472.00 634.50 445.00 163.50 59.50 3.00 23.00 171.00 352.00 624.00 614.50 4217.00
1959 750.50 669.50 631.00 466.00 359.50 168.00 68.00 100.50 220.00 400.00 656.00 794.00 5283.00
1960 859.50 696.50 644.00 467.00 395.50 186.50 61.00 130.50 195.50 388.00 651.50 821.50 5497.00
1961 676.00 564.00 587.00 511.00 325.00 91.50 34.50 18.00 216.50 457.50 706.00 771.00 4958.00
1962 637.00 i 622.00 683.50 413.00 419.50 183.50 110.00 96.00 148.50 394.73 a 540.00 705.50 4316.23
1963 964.50 496.50 649.50 486.50 319.50 211.00 96.00 53.50 78.00 339.50 578.50 710.50 4983.50
1964 719.00 674.00 642.00 537.00 364.50 204.50 88.00 104.00 184.50 373.00 679.50 879.00 5449.00
1965 764.50 605.00 610.50 425.00 367.50 167.50 48.50 32.50 237.00 290.00 505.50 774.00 4827.50
1966 757.00 654.00 621.50 416.50 300.50 181.50 70.00 54.50 91.00 414.50 559.00 651.00 4771.00
1967 692.00 605.00 697.00 563.00 311.00 61.00 42.50 11.00 66.50 345.00 575.00 757.50 4726.50
1968 774.50 553.50 530.50 506.00 293.50 160.00 54.00 97.50 162.50 438.50 598.50 864.00 5033.00
1969 978.00 701.00 581.00 476.50 216.00 72.50 62.00 93.50 154.00 435.00 558.50 692.00 5020.00
1970 756.50 564.50 579.00 535.00 318.00 122.00 76.00 60.50 235.00 451.50 611.50 816.50 5126.00
1971 768.50 652.00 714.50 485.00 273.00 253.50 85.50 18.00 213.50 437.50 597.00 839.50 5337.50
1972 888.00 671.50 556.00 562.50 230.50 154.50 45.50 41.00 242.00 465.00 589.00 875.00 5320.50
1973 830.00 615.00 577.50 439.00 262.00 168.50 49.50 135.00 120.50 420.50 686.00 664.00 4967.50
1974 872.00 655.50 615.87 a 469.00 380.50 127.50 81.50 39.50 64.50 377.00 568.50 701.50 4952.87
1975 774.50 661.00 676.00 576.50 300.50 183.50 45.97 b 99.50 124.82 b 431.50 621.00 732.00 5226.79
1976 727.00 724.00 703.50 484.50 283.00 209.00 77.50 91.50 99.50 389.50 587.50 731.50 5108.00
1977 850.50 526.30 a 664.50 392.50 387.50 113.00 90.00 43.50 196.00 426.00 684.50 750.50 5124.80
1978 710.00 556.00 516.50 433.50 346.00 78.00 45.50 71.50 173.50 347.50 0.00 z 924.50 4202.50
1979 1007.50 676.00 515.00 438.50 232.50 143.00 43.50 35.50 77.00 340.50 675.00 660.41 c 4844.41
1980 964.50 652.50 636.50 378.50 303.00 208.00 51.50 79.00 137.50 361.50 547.50 640.00 4960.00
1981 716.00 590.00 520.50 444.00 292.50 175.00 79.00 25.00 134.00 457.50 542.50 728.50 4704.50
1982 798.50 657.50 627.50 518.00 277.50 86.00 74.50 46.00 126.00 372.00 677.00 0.00 z 4260.50
1983 638.50 532.50 0.00 z 423.00 229.00 147.00 57.00 9.00 208.50 409.50 529.50 928.50 4112.00
1984 695.00 599.00 503.00 484.50 354.00 164.50 42.00 43.00 156.00 451.00 607.00 878.00 4977.00
1985 854.00 716.50 662.50 405.50 270.50 123.50 4.50 38.50 195.50 416.50 845.00 908.50 5441.00
1986 633.00 607.50 455.00 480.50 292.50 69.00 83.50 7.50 208.50 302.50 577.00 736.00 4452.50
1987 748.00 541.00 512.50 344.50 219.50 74.00 49.00 28.50 88.50 288.50 493.50 816.50 4204.00
1988 784.00 599.50 590.00 403.00 292.50 170.00 58.50 55.50 159.50 263.00 563.50 727.50 4666.50
1989 726.00 836.00 648.50 332.00 272.00 109.14 a 67.50 44.50 87.50 366.50 533.50 701.50 4724.64
1990 700.00 696.00 538.50 359.00 293.00 135.50 24.00 21.50 62.00 440.50 569.00 953.50 4792.50
1991 806.00 478.00 644.50 460.50 339.00 189.00 29.50 36.00 83.00 391.00 545.50 686.50 4688.50
1992 661.50 511.00 452.00 352.00 179.50 72.00 19.50 33.50 157.00 347.00 599.50 828.00 4212.50
1993 896.50 697.50 556.50 422.50 145.50 135.00 83.50 39.00 125.50 312.00 735.50 743.50 4892.50
1994 634.50 689.50 500.00 368.50 230.50 164.00 34.00 24.50 50.50 426.00 702.00 758.00 4582.00
1995 685.50 535.00 567.00 447.00 183.00 126.00 20.50 80.00 44.00 0.00 z 452.50 683.50 3824.00
1996 739.50 647.00 515.50 369.00 352.00 140.50 41.00 31.00 178.50 402.50 598.50 733.00 4748.00
1997 0.00 z 610.00 564.50 425.00 157.50 120.50 21.50 2.50 71.50 374.00 470.00 718.50 3535.50
1998 652.50 512.50 500.00 393.00 250.50 72.00 8.50 17.00 57.00 337.50 459.50 708.50 3968.50
1999 634.00 549.00 578.00 427.50 307.50 122.00 36.50 16.50 103.50 338.50 453.50 677.00 4243.50
2000 740.00 578.50 563.50 333.00 245.50 99.00 29.50 39.50 115.50 347.00 661.50 710.00 4462.50
2001 702.50 654.50 542.50 458.00 245.00 180.00 55.50 29.00 112.50 410.50 514.50 691.00 4595.50
2002 645.50 581.50 684.50 446.50 334.50 102.50 50.50 43.50 126.00 383.00 540.00 692.00 4630.00
2003 596.50 620.50 515.00 442.50 275.50 98.00 25.00 12.50 88.00 273.50 694.50 717.50 4359.00
2004 767.00 0.00 z 427.50 g 309.50 195.50 81.21 a 18.50 9.50 144.00 312.00 584.00 686.50 3107.71
2005 690.50 0.00 z 449.50 381.00 186.00 131.50 25.50 19.00 174.50 304.00 662.00 765.00 3788.50
2006 630.00 662.00 591.50 408.50 267.12 a 92.50 19.50 n 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2651.62
Period of Record Statistics
MEAN 774.25 630.05 592.69 431.49 276.12 142.67 55.24 53.40 141.32 376.69 597.76 744.94 4842.41
S.D. 120.66 80.58 77.91 68.80 66.23 48.84 30.06 33.27 54.91 59.12 80.52 82.63 409.13
SKEW 1.04 0.49 -0.24 0.16 -0.04 0.24 0.85 1.27 0.29 0.01 0.10 0.49 -0.04
MAX 1150.00 872.50 771.90 603.50 419.50 274.50 151.50 190.50 293.00 515.00 845.00 953.50 5865.40
MIN 588.00 472.00 405.50 248.00 145.50 50.17 3.00 2.50 44.00 256.00 383.00 568.50 3873.50
NO YRS 74 74 74 76 76 76 75 75 75 74 74 73 66