POINT GRENVILLE, WASHINGTON

Monthly Total Heating Degree Days

(456584)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 197912
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
1947 0.00 z 49.50 z 0.00 z 480.00 383.88 a 284.00 228.50 195.09 b 0.00 z 413.00 428.50 f 0.00 z 1984.47
1948 703.50 737.50 700.50 599.00 442.50 140.00 k 239.00 251.50 0.00 z 0.00 z 0.00 z 0.00 z 3673.50
1949 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
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 692.50 527.50 442.50 368.50 287.00 249.50 242.50 370.50 582.00 662.50 4425.00
1953 625.00 635.50 699.50 592.50 422.00 332.50 248.50 211.83 a 215.40 e 363.70 c 479.00 587.50 5412.93
1954 803.50 577.50 719.00 593.50 417.00 349.44 c 303.50 250.07 a 207.50 394.50 425.00 654.50 5695.01
1955 689.00 654.00 744.50 651.50 503.50 377.00 258.50 307.00 301.00 446.50 711.00 481.00 k 5643.50
1956 767.50 780.00 752.00 569.50 423.50 330.00 277.50 302.50 317.50 467.50 615.00 724.00 6326.50
1957 884.50 697.50 618.50 501.00 380.50 260.50 238.00 213.50 143.50 400.50 581.00 628.00 5547.00
1958 588.50 456.00 648.50 524.00 359.00 197.00 207.00 249.50 288.50 408.50 602.07 a 558.50 5087.07
1959 697.50 612.00 652.50 526.03 a 433.00 256.00 243.00 296.05 a 297.00 385.00 574.00 704.22 a 5676.30
1960 737.50 651.46 a 696.00 541.50 479.00 391.00 339.00 255.50 340.50 428.50 585.52 a 687.00 6132.48
1961 603.98 a 567.00 707.00 624.50 521.32 a 393.50 219.58 a 286.75 c 316.50 548.70 a 486.00 j 811.00 5599.83
1962 772.50 626.00 701.00 533.50 488.50 404.00 348.00 243.00 323.00 388.50 516.00 645.00 5989.00
1963 839.50 445.00 661.00 532.50 417.50 370.50 236.00 252.00 189.50 324.50 549.50 621.00 5438.50
1964 672.00 668.50 709.50 598.50 533.00 334.50 0.00 z 236.50 323.50 350.00 662.50 813.75 c 5902.25
1965 706.00 629.00 636.50 536.00 492.00 380.00 293.50 241.00 348.00 364.00 465.50 716.00 5807.50
1966 705.00 596.50 707.00 550.00 521.00 328.00 277.00 0.00 z 301.00 440.50 561.00 624.50 5611.50
1967 645.50 618.00 710.00 371.50 l 491.19 b 233.00 i 258.00 244.26 b 207.00 343.00 510.00 d 746.14 b 4773.09
1968 719.72 a 572.23 a 580.50 608.50 447.43 a 332.50 278.45 c 236.78 b 280.34 a 419.00 543.75 b 808.50 5827.70
1969 926.50 684.50 674.50 530.00 410.50 229.00 269.00 257.50 271.15 d 380.78 a 572.68 b 573.50 5779.62
1970 696.50 494.50 598.00 611.50 478.50 340.50 317.00 318.00 378.50 230.50 p 530.00 610.50 h 4763.00
1971 622.00 510.00 633.50 506.00 413.50 342.50 280.50 146.50 266.50 451.50 581.50 793.50 5547.50
1972 885.50 711.00 603.00 583.00 401.50 348.50 246.00 284.54 c 337.50 498.50 542.50 838.07 b 6279.60
1973 779.00 609.50 661.50 509.00 367.50 275.00 h 148.50 m 67.50 w 57.00 v 447.50 675.00 620.50 4669.50
1974 829.50 617.12 c 633.00 520.00 514.00 124.50 u 212.00 f 252.00 182.40 e 517.59 c 523.50 665.47 a 5254.58
1975 742.50 654.50 680.00 661.50 456.39 d 278.50 f 259.00 0.00 z 62.00 t 0.00 z 544.44 c 698.57 b 4696.90
1976 676.00 660.50 553.00 g 511.00 499.00 0.00 z 50.00 y 0.00 z 66.00 u 190.50 t 492.50 679.50 3518.50
1977 788.36 b 515.41 a 722.50 587.00 444.50 324.31 a 289.50 235.50 327.00 446.50 627.41 a 688.50 5996.49
1978 653.67 b 587.46 b 477.50 g 510.50 393.04 c 229.50 296.00 319.50 282.50 264.00 j 654.50 580.00 i 3926.67
1979 887.00 701.75 d 508.50 h 587.59 a 431.02 e 387.32 b 274.00 h 231.31 e 205.18 b 411.00 596.50 664.43 a 5103.10
Period of Record Statistics
MEAN 737.40 616.78 674.69 558.85 446.93 328.77 269.48 252.58 275.72 416.39 566.79 688.57 5769.55
S.D. 92.30 80.95 45.56 47.74 49.11 57.40 35.29 38.80 60.95 54.61 65.97 78.09 340.42
SKEW 0.39 -0.34 -0.36 0.43 0.07 -0.82 0.42 -0.36 -0.47 0.58 0.11 0.38 -0.09
MAX 926.50 780.00 752.00 661.50 533.00 404.00 348.00 319.50 378.50 548.70 711.00 838.07 6326.50
MIN 588.50 445.00 580.50 480.00 359.00 197.00 207.00 146.50 143.50 324.50 425.00 558.50 5087.07
NO YRS 28 28 26 29 30 24 25 26 25 25 27 25 15