SEATTLE NAVAL AIR STN, WASHINGTON

Monthly Total Heating Degree Days

(457468)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 197005
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
1945 0.00 z 0.00 z 630.50 490.00 214.00 167.00 40.50 50.50 194.50 332.50 587.50 712.50 3419.50
1946 696.50 596.50 609.50 451.50 193.50 152.00 35.00 56.00 142.50 454.50 665.00 748.00 4800.50
1947 832.50 530.50 510.00 378.00 191.50 111.50 35.50 44.50 141.00 344.00 603.00 641.00 4363.00
1948 762.50 705.00 636.00 522.00 329.50 83.50 53.00 78.00 200.50 400.50 627.00 836.50 5234.00
1949 1010.60 a 729.00 591.00 412.00 212.00 167.50 87.00 53.00 121.50 454.50 428.50 731.50 4998.10
1950 1170.50 661.50 663.00 504.50 375.00 135.50 39.00 26.50 142.00 398.00 592.00 567.00 5274.50
1951 786.50 628.50 724.00 406.50 273.00 88.50 20.00 47.50 101.50 355.50 546.50 797.50 4775.50
1952 805.50 642.00 625.00 421.00 266.00 195.00 40.50 39.00 92.00 237.50 599.50 625.00 4588.00
1953 559.50 599.00 601.50 451.50 294.50 196.00 46.00 23.50 109.50 288.50 465.00 633.00 4267.50
1954 824.00 575.50 667.50 511.50 283.50 206.00 97.50 89.00 129.50 357.50 420.00 668.00 4829.50
1955 728.00 683.00 733.50 538.50 386.50 194.50 99.00 78.50 176.00 365.00 713.00 755.50 5451.00
1956 750.50 790.00 679.00 411.50 208.00 183.00 32.00 39.50 145.00 394.00 592.00 702.50 4927.00
1957 940.50 671.00 593.50 394.00 155.50 89.50 50.00 28.50 37.00 365.00 574.50 603.50 4502.50
1958 616.50 445.00 581.50 403.00 128.50 43.50 1.00 12.00 123.00 294.50 600.00 577.50 3826.00
1959 720.00 622.50 599.00 428.50 310.00 122.50 37.50 57.00 187.50 356.50 592.00 721.00 4754.00
1960 756.50 641.00 613.00 413.00 338.50 150.00 33.50 104.50 169.50 322.00 558.50 729.50 4829.50
1961 619.00 534.50 550.00 479.00 292.50 84.00 22.50 6.00 171.00 411.00 635.00 722.00 4526.50
1962 755.00 595.00 659.00 394.50 368.50 154.00 89.00 48.50 106.50 322.50 507.00 646.00 4645.50
1963 905.50 457.00 605.50 459.00 254.00 177.50 65.50 20.00 65.50 276.50 545.50 686.00 4517.50
1964 687.50 652.00 616.00 522.00 357.50 181.50 70.50 91.50 189.50 326.50 647.50 850.00 5192.00
1965 755.50 625.50 595.00 435.50 360.00 120.00 49.00 43.50 197.00 269.50 451.50 741.00 4643.00
1966 721.00 605.00 586.50 442.50 323.50 154.00 62.50 32.00 73.50 355.50 537.00 597.50 4490.50
1967 668.50 584.50 669.00 533.50 276.50 52.00 13.00 4.00 51.00 309.00 527.50 721.00 4409.50
1968 756.00 498.50 521.00 495.00 270.00 161.00 32.00 82.00 164.50 389.50 540.00 840.50 4750.00
1969 979.00 643.00 572.50 438.50 203.50 63.50 55.50 60.50 149.50 373.50 550.00 627.50 4716.50
1970 727.00 515.00 538.50 461.00 324.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2565.50
Period of Record Statistics
MEAN 781.36 609.20 614.25 453.75 276.52 137.32 48.26 48.62 135.22 350.14 564.20 699.24 4721.32
S.D. 135.01 81.48 55.27 48.05 71.02 48.66 25.48 27.19 46.97 54.23 71.82 80.70 356.29
SKEW 1.06 -0.13 0.25 0.31 -0.30 -0.43 0.48 0.28 -0.44 0.00 -0.28 0.22 -0.10
MAX 1170.50 790.00 733.50 538.50 386.50 206.00 99.00 104.50 200.50 454.50 713.00 850.00 5451.00
MIN 559.50 445.00 510.00 378.00 128.50 43.50 1.00 4.00 37.00 237.50 420.00 567.00 3826.00
NO YRS 25 25 26 26 26 25 25 25 25 25 25 25 24