GRAYLAND, WASHINGTON

Monthly Total Heating Degree Days

(453320)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 199.50 246.00 170.50 260.50 404.00 630.00 808.50 2719.00
1949 958.50 710.00 578.00 489.00 353.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3088.50
1950 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
1951 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
1952 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
1953 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 323.50 207.00 158.00 204.00 310.00 481.00 623.50 2307.00
1954 799.00 557.50 728.50 562.50 413.00 254.00 g 262.50 222.50 215.00 371.00 460.00 654.50 5246.00
1955 726.50 669.50 760.00 637.50 496.50 308.00 256.50 302.50 280.50 403.50 697.00 754.91 d 6292.91
1956 746.14 b 769.02 a 695.00 494.50 377.50 304.50 192.00 196.00 248.00 444.00 558.50 681.50 5706.66
1957 891.50 640.50 595.50 481.50 372.00 251.00 237.00 185.00 125.50 368.50 559.50 604.50 a 5312.00
1958 564.89 d 445.00 618.00 474.00 303.00 138.00 134.00 166.50 213.50 336.50 585.50 544.50 4523.39
1959 675.50 610.30 a 612.50 474.00 409.00 254.50 193.00 238.00 288.50 374.00 529.00 678.50 5336.80
1960 739.00 650.00 601.50 476.00 423.50 330.50 284.50 199.00 254.50 375.10 a 556.50 663.00 5553.10
1961 580.00 540.50 614.83 a 533.50 399.00 260.00 152.50 189.00 286.50 460.19 b 633.50 694.50 5344.02
1962 768.50 587.50 687.50 478.50 454.00 339.50 282.00 207.50 211.50 360.50 488.00 628.50 5493.50
1963 838.00 414.50 643.00 508.50 374.50 315.50 176.00 183.00 143.50 330.50 532.50 617.00 5076.50
1964 665.50 670.00 653.00 592.50 484.50 305.50 245.50 230.50 266.50 359.00 666.21 a 821.50 5960.21
1965 706.00 600.50 578.50 507.00 477.50 331.50 235.00 181.50 300.50 344.50 467.00 741.50 5471.00
1966 692.50 588.00 647.00 479.00 445.00 294.50 247.00 245.50 209.00 422.00 529.00 616.00 5414.50
1967 657.00 588.50 696.50 616.00 440.50 260.00 219.50 169.50 167.00 356.00 517.00 748.50 5436.00
1968 728.50 506.50 566.50 566.50 382.00 277.50 190.00 197.50 196.00 427.50 524.50 798.50 5361.50
1969 922.50 673.00 591.00 524.50 349.50 194.00 247.00 257.50 263.50 426.00 519.50 631.50 5599.50
1970 715.50 484.00 0.00 z 580.00 434.52 a 304.50 270.73 a 152.50 o 231.00 h 273.50 m 557.88 d 756.40 a 4103.53
1971 762.17 b 623.26 a 687.00 515.19 d 407.13 a 319.14 a 260.29 b 171.65 d 278.28 a 460.00 591.96 b 799.05 b 5875.13
1972 816.69 b 673.00 638.00 618.50 403.50 307.50 239.50 202.00 345.00 480.50 0.00 z 0.00 z 4724.19
1973 0.00 z 561.12 c 637.00 511.00 427.00 321.50 301.50 326.00 253.50 433.50 0.00 z 0.00 z 3772.12
1974 0.00 z 638.00 634.50 508.50 456.00 244.00 h 125.00 p 250.50 181.00 439.50 532.00 0.00 z 3640.00
1975 0.00 z 645.08 b 687.00 630.00 462.50 369.00 239.00 247.00 209.00 454.00 331.00 m 701.00 4643.58
1976 710.93 a 659.15 e 730.50 565.00 480.50 379.66 a 264.00 237.50 245.50 425.98 b 559.82 b 503.00 f 5258.54
1977 750.00 531.00 684.14 b 524.00 469.50 306.00 285.50 119.00 h 312.00 432.00 642.93 a 693.37 a 5630.44
1978 661.69 b 552.22 a 581.77 a 496.00 437.50 219.50 187.00 120.50 k 253.50 358.50 507.00 h 873.68 a 4621.36
1979 468.00 o 303.00 o 565.50 480.00 c 256.00 j 347.50 279.50 182.79 b 145.50 334.28 a 381.50 i 313.50 o 2335.08
1980 541.00 i 592.43 a 625.00 463.50 434.52 a 244.50 g 196.13 e 250.50 f 278.50 385.43 a 523.89 c 486.50 j 3499.40
1981 540.50 599.00 523.38 a 528.00 421.50 0.00 z 256.50 0.00 z 0.00 z 502.00 0.00 z 0.00 z 3370.88
1982 0.00 z 0.00 z 0.00 z 123.00 w 437.00 293.50 242.63 e 215.00 187.50 335.50 611.50 706.00 3028.63
1983 613.50 475.50 500.00 439.00 321.00 254.50 155.50 175.50 252.00 477.50 493.00 864.00 5021.00
1984 662.50 563.00 514.50 525.50 428.00 314.00 273.00 211.00 246.00 464.50 569.50 794.00 5565.50
1985 778.50 698.00 680.00 513.50 366.00 283.50 190.50 200.00 278.00 430.50 790.00 779.00 5987.50
1986 605.00 625.00 472.50 542.00 415.29 b 230.00 245.00 200.00 301.50 344.50 541.00 642.50 5164.29
1987 684.00 520.50 509.50 433.00 251.00 i 285.00 219.00 196.00 232.00 325.50 459.50 751.50 4615.50
1988 719.50 541.50 586.50 455.00 391.00 300.00 232.50 201.00 288.50 321.00 535.50 672.00 5244.00
1989 737.00 785.50 639.00 413.00 375.00 233.50 186.00 192.00 183.50 413.00 515.00 637.50 5310.00
1990 645.50 661.50 536.00 439.00 397.50 254.50 163.00 139.50 132.50 454.00 541.00 873.00 5237.00
1991 742.00 455.50 658.00 528.00 422.50 304.00 201.50 205.50 160.50 407.50 535.00 628.00 5248.00
1992 610.50 471.50 466.50 413.50 330.50 215.00 157.50 166.50 293.00 361.50 555.50 772.50 4814.00
1993 832.00 625.50 555.00 452.50 270.50 223.00 173.50 133.50 253.50 372.50 677.00 688.00 5256.50
1994 597.00 656.50 518.50 425.00 356.00 264.00 209.00 127.00 183.50 453.00 678.00 708.50 5176.00
1995 589.00 542.50 556.50 493.00 370.00 261.00 132.50 212.00 99.50 393.50 461.00 649.00 4759.50
1996 711.00 605.50 564.50 443.00 432.00 276.00 187.00 138.50 k 0.00 z 324.50 l 594.50 392.50 o 3813.50
1997 379.50 n 589.00 615.50 475.50 278.00 198.00 146.50 96.50 111.50 385.00 435.00 653.00 3983.50
1998 649.00 512.50 548.00 493.50 356.50 243.50 164.50 146.00 250.00 392.00 506.00 758.00 5019.50
1999 688.20 a 475.00 g 464.00 i 528.75 b 452.00 300.00 262.50 158.50 244.00 448.00 489.00 635.50 4206.45
2000 743.00 581.50 640.50 464.00 381.00 253.50 184.00 184.00 231.50 408.50 658.50 688.00 5418.00
2001 661.50 645.50 585.00 539.00 414.37 a 315.00 250.00 189.50 243.50 439.50 555.00 696.50 5534.37
2002 680.00 613.41 a 669.00 525.50 438.65 a 207.00 f 123.00 k 226.62 b 279.83 a 449.00 500.50 617.00 4999.51
2003 558.50 587.50 0.00 z 0.00 z 401.00 225.50 174.00 187.00 240.50 325.00 632.50 668.50 4000.00
2004 694.50 558.50 0.00 z 412.50 326.50 211.00 126.50 98.00 238.50 0.00 z 0.00 z 0.00 z 2666.00
2005 0.00 z 0.00 z 501.00 454.00 264.50 202.50 145.50 173.00 288.00 378.00 574.00 671.00 3651.50
2006 575.50 611.00 629.50 468.00 367.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2651.00
Period of Record Statistics
MEAN 704.22 594.11 608.29 503.66 399.61 275.56 215.54 194.80 232.44 399.17 558.51 704.16 5371.35
S.D. 93.79 77.99 69.66 55.68 54.69 50.29 46.85 43.72 55.50 49.18 72.76 77.95 365.83
SKEW 0.57 -0.03 -0.05 0.56 -0.60 -0.33 -0.15 0.41 -0.57 0.02 0.86 0.49 0.19
MAX 958.50 785.50 760.00 637.50 496.50 379.66 301.50 326.00 345.00 502.00 790.00 873.68 6292.91
MIN 540.50 414.50 466.50 412.50 264.50 138.00 126.50 96.50 99.50 310.00 435.00 544.50 4523.39
NO YRS 46 50 49 52 52 49 52 48 51 51 47 45 31