TACOMA CITY HALL, WASHINGTON

Monthly Total Heating Degree Days

(458286)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 198112
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
1933 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 48.50 246.50 380.50 575.00 621.00 1871.50
1934 624.00 501.50 421.50 279.50 222.00 124.50 63.00 38.50 202.50 334.00 468.50 672.00 3951.50
1935 745.50 579.50 683.50 473.50 298.00 136.00 98.50 78.00 131.50 430.50 681.00 679.50 5015.00
1936 668.00 863.00 656.50 347.00 238.00 97.50 29.00 19.50 202.00 334.50 621.50 654.00 4730.50
1937 1072.50 673.50 518.00 483.50 297.50 116.00 38.00 71.00 151.00 295.50 513.50 645.50 4875.50
1938 744.50 600.00 590.00 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 1934.50
1939 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
1940 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
1941 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
1942 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
1943 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
1944 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
1945 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
1946 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
1947 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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 102.50 78.50 84.50 230.50 434.50 640.00 844.50 2415.00
1949 1024.00 726.00 579.50 419.50 225.50 175.50 96.00 63.00 155.00 477.50 425.50 765.50 5132.50
1950 1136.50 646.00 663.50 516.00 380.00 158.00 58.50 50.00 177.00 425.00 585.00 a 556.50 5352.00
1951 816.50 622.50 747.50 415.50 301.00 127.00 42.50 75.95 a 155.50 406.00 575.50 828.50 5113.95
1952 814.00 659.50 653.00 433.50 313.50 223.50 72.50 72.50 143.50 298.00 655.50 661.50 5000.50
1953 575.50 619.50 624.00 492.00 e 295.00 195.50 39.50 33.00 116.00 310.50 482.50 614.50 4397.50
1954 808.00 550.50 657.00 483.00 279.50 209.50 103.50 90.00 149.00 402.00 420.00 665.00 4817.00
1955 716.50 676.00 748.50 597.50 448.00 189.50 103.33 a 86.50 199.50 378.50 711.50 751.00 5606.33
1956 740.00 777.50 683.50 416.50 228.00 193.50 50.00 49.50 168.50 380.50 610.50 706.50 5004.50
1957 921.00 667.00 570.50 386.00 177.00 95.00 89.50 58.00 58.97 a 366.50 601.00 601.00 4591.47
1958 629.50 443.00 601.50 433.00 143.50 47.50 5.50 12.50 147.50 326.00 597.50 576.50 3963.50
1959 701.50 632.50 0.00 z 0.00 z 0.00 z 154.50 83.00 77.00 203.50 414.50 610.50 730.50 3607.50
1960 781.50 642.00 645.63 e 464.50 318.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2852.13
1961 0.00 z 0.00 z 585.00 486.50 305.00 90.00 24.00 5.00 190.00 423.00 643.50 739.00 3491.00
1962 768.50 551.00 645.50 412.50 401.00 167.00 95.50 88.00 137.00 362.00 534.00 673.50 4835.50
1963 888.50 451.50 608.00 417.00 253.50 194.50 77.00 37.50 68.00 0.00 z 544.00 648.50 4188.00
1964 663.50 269.00 p 441.00 h 505.00 351.50 159.00 65.50 100.00 177.50 347.00 655.50 883.00 3907.50
1965 766.50 612.00 555.00 407.50 372.00 142.50 45.00 50.38 c 191.50 267.00 488.50 770.00 4667.88
1966 742.50 599.41 a 608.00 422.00 284.00 174.50 69.00 34.50 80.00 359.50 533.50 617.50 4524.41
1967 668.50 598.00 678.50 518.00 273.00 63.00 14.00 i 9.00 43.00 315.50 525.00 728.00 4419.50
1968 757.50 506.00 519.50 486.50 277.50 161.50 43.00 89.00 163.00 400.50 544.00 850.00 4798.00
1969 980.12 a 653.50 550.50 458.50 200.00 75.50 46.50 77.50 158.00 395.00 560.50 661.50 4817.12
1970 743.50 509.00 563.50 513.50 290.50 107.00 52.00 37.50 218.00 427.00 566.00 792.50 4820.00
1971 768.50 642.50 701.00 463.00 268.00 247.00 62.50 12.50 171.50 423.50 581.50 835.00 5176.50
1972 872.50 664.50 565.00 554.50 229.50 151.50 55.50 33.50 224.50 430.00 574.62 d 824.50 5180.12
1973 753.09 b 556.00 571.00 427.50 253.50 184.50 60.00 7.50 v 36.50 w 352.50 637.00 643.00 4438.09
1974 796.91 b 617.08 b 604.50 b 463.00 366.50 120.00 a 83.00 38.50 58.50 328.00 543.00 649.97 a 4668.96
1975 753.00 641.50 640.00 529.00 294.50 186.00 40.50 97.50 101.50 383.00 587.00 713.53 b 4967.03
1976 692.00 667.00 692.00 439.00 282.50 216.00 54.00 73.50 88.00 349.50 553.50 671.00 4778.00
1977 811.00 513.50 641.00 363.00 356.00 117.50 69.50 44.50 189.50 374.00 645.50 703.50 4828.50
1978 656.00 540.00 496.00 437.50 314.00 83.00 51.50 50.50 175.00 305.00 708.00 857.50 4674.00
1979 893.00 662.00 491.72 b 461.50 251.50 148.50 45.00 19.00 84.00 265.50 603.50 623.00 4548.22
1980 882.98 a 609.58 d 603.50 334.14 a 273.50 188.00 30.50 72.50 118.00 302.00 523.50 636.00 4574.20
1981 624.65 a 576.00 470.17 a 416.50 267.50 100.00 j 68.50 13.00 117.00 396.00 492.00 687.50 4128.82
Period of Record Statistics
MEAN 783.83 612.49 606.47 448.78 286.94 147.83 60.80 53.82 151.12 367.57 574.16 704.78 4807.25
S.D. 126.25 84.14 74.92 62.88 62.24 48.39 23.72 27.73 52.41 51.92 70.11 85.66 352.79
SKEW 0.93 0.40 -0.31 -0.26 0.26 -0.11 0.04 -0.11 -0.34 -0.14 -0.16 0.50 -0.42
MAX 1136.50 863.00 748.50 597.50 448.00 247.00 103.50 100.00 246.50 477.50 711.50 883.00 5606.33
MIN 575.50 443.00 421.50 279.50 143.50 47.50 5.50 5.00 43.00 265.50 420.00 556.50 3951.50
NO YRS 37 36 36 36 36 36 36 37 37 37 38 38 29