ANACORTES, WASHINGTON

Monthly Total Heating Degree Days

(450176)

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 595.00 536.85 b 459.50 0.00 z 179.00 132.00 52.70 a 61.50 131.50 347.95 b 667.76 a 436.50 i 3163.75
1932 778.62 a 656.50 557.50 403.00 293.50 121.50 122.97 a 83.50 180.00 390.50 500.00 837.52 a 4925.10
1933 187.50 x 784.00 605.50 497.00 376.00 233.50 154.50 89.00 282.50 417.50 565.00 682.50 4687.00
1934 646.00 521.00 479.50 337.50 256.00 167.00 103.50 96.00 220.00 368.50 480.00 683.50 4358.50
1935 779.50 558.00 680.00 483.00 339.50 162.50 146.00 130.00 186.00 422.50 660.00 639.00 5186.00
1936 701.00 914.50 682.50 414.00 304.50 132.00 85.00 72.00 243.00 312.50 612.00 683.00 5156.00
1937 126.50 z 335.00 n 536.76 d 480.58 d 330.87 e 152.88 d 101.61 d 126.50 189.00 321.50 535.00 660.00 3434.70
1938 728.00 608.00 591.00 399.00 306.00 147.50 102.00 147.00 153.00 377.00 629.50 704.50 4892.50
1939 675.50 725.50 629.50 428.50 325.50 241.50 114.50 83.50 189.00 406.50 432.50 539.00 4791.00
1940 649.50 555.50 487.50 346.50 221.50 117.50 80.50 60.50 140.50 290.50 654.50 627.00 4231.50
1941 614.50 519.00 447.00 338.50 275.00 139.00 35.00 84.00 211.00 347.00 518.00 688.00 4216.00
1942 731.00 611.00 583.00 372.00 279.50 182.50 63.50 63.50 186.50 325.50 626.00 686.50 4710.50
1943 953.50 580.50 644.50 404.00 372.00 197.50 125.00 99.50 153.50 366.50 536.00 734.50 5167.00
1944 687.00 650.00 627.50 418.00 307.50 188.50 93.50 119.50 155.50 297.50 535.50 745.50 4825.50
1945 678.00 595.00 626.00 502.50 266.50 195.00 106.50 106.50 253.00 388.00 651.00 730.50 5098.50
1946 702.50 610.50 611.00 484.00 248.50 181.00 102.50 116.00 194.00 477.50 692.50 769.50 5189.50
1947 877.00 578.50 557.00 384.00 249.00 141.00 68.00 110.00 199.00 369.50 621.50 649.50 4804.00
1948 762.50 724.00 634.00 516.00 325.50 104.50 94.50 127.10 a 209.50 439.00 626.00 851.50 5414.10
1949 988.50 804.09 e 598.00 431.50 251.50 175.50 138.50 106.00 160.00 469.50 441.50 773.50 5338.09
1950 1220.50 646.50 651.50 502.50 386.00 152.50 89.50 92.50 194.50 429.00 606.00 582.28 a 5553.28
1951 813.50 657.00 730.57 a 407.50 292.50 133.45 a 70.50 100.00 181.00 398.00 583.50 822.50 5190.01
1952 831.00 633.86 a 647.00 448.00 309.50 246.00 104.50 114.50 143.00 315.50 609.50 648.00 5050.36
1953 611.00 602.00 591.50 445.50 279.50 231.00 78.53 a 52.50 164.00 335.83 a 463.50 640.00 4494.87
1954 874.00 585.41 a 664.00 523.50 319.41 c 245.50 166.50 150.50 189.00 416.00 440.00 689.50 5263.32
1955 755.00 713.50 786.00 552.00 417.00 234.00 170.00 143.00 236.50 427.50 772.50 816.33 a 6023.33
1956 782.50 812.00 705.00 424.50 246.45 a 228.00 75.50 98.50 215.50 455.00 624.00 741.00 5407.95
1957 982.00 734.50 611.00 427.00 217.00 152.50 129.50 92.50 88.50 0.00 z 592.50 d 635.00 4662.00
1958 630.00 488.44 a 607.60 a 441.50 209.50 111.00 30.00 44.95 a 201.21 a 380.00 651.50 616.50 4412.20
1959 728.00 672.50 618.28 d 457.24 a 359.27 c 152.00 84.00 140.00 243.50 419.50 652.24 a 726.50 5253.03
1960 786.00 649.50 638.50 434.50 347.00 198.00 84.00 138.00 252.00 370.50 601.00 729.50 5228.50
1961 646.50 532.00 564.20 a 475.50 311.00 134.50 72.00 53.00 233.00 474.50 655.34 a 730.05 a 4881.59
1962 766.00 602.52 a 677.50 442.00 389.50 204.00 136.50 117.50 196.00 361.00 501.96 b 0.00 z 4394.48
1963 697.50 i 511.00 628.00 492.86 b 307.02 e 186.92 d 138.50 99.50 149.00 354.50 563.00 702.50 4132.80
1964 697.50 a 670.50 660.00 549.50 411.50 225.50 158.00 159.50 288.75 b 431.00 674.50 863.00 5789.25
1965 799.50 663.00 680.00 484.00 434.00 234.50 128.50 131.00 272.00 366.50 505.00 751.50 5449.50
1966 734.00 614.50 630.50 474.50 382.00 227.50 161.00 137.50 174.50 446.50 548.00 631.00 5161.50
1967 726.00 628.50 690.50 555.00 363.00 131.00 116.50 60.00 132.00 355.50 579.50 765.50 5103.00
1968 756.50 602.00 562.00 527.50 347.00 239.50 101.00 148.50 270.00 461.00 600.00 b 865.50 5480.50
1969 1055.00 717.36 c 651.50 505.00 311.50 126.21 a 184.50 214.50 245.50 506.50 586.50 725.00 5829.07
1970 811.00 582.00 646.50 566.00 418.50 196.50 151.50 186.00 291.50 507.50 626.50 805.50 5789.00
1971 817.50 659.00 768.50 520.50 365.00 293.00 163.50 75.50 262.00 484.00 590.56 c 854.00 5853.06
1972 901.67 b 681.50 592.50 575.00 305.50 230.00 118.50 90.00 295.50 493.00 608.79 a 858.00 5749.97
1973 810.00 640.00 614.50 486.50 342.50 220.50 130.50 186.00 190.00 351.00 g 688.50 653.50 4962.50
1974 839.50 625.50 641.00 489.00 415.50 218.00 156.00 101.50 125.50 413.50 585.00 653.50 5263.50
1975 795.50 714.00 689.00 583.50 361.50 255.00 115.00 174.00 196.50 445.00 616.00 733.00 5678.00
1976 712.50 704.00 745.00 504.00 346.00 263.50 111.00 173.50 202.00 443.50 614.00 678.50 5497.50
1977 851.00 546.00 654.00 460.00 377.50 174.50 148.50 68.50 250.00 465.00 676.03 a 776.00 5447.03
1978 745.50 585.00 572.50 449.00 341.50 114.00 88.50 84.50 224.50 411.50 747.00 849.00 5212.50
1979 960.00 687.00 566.50 468.00 289.50 188.50 93.50 85.50 128.00 396.50 665.50 633.50 5162.00
1980 934.50 651.43 b 634.00 401.50 333.50 242.50 134.00 160.50 232.00 411.00 559.50 674.00 5368.43
1981 651.50 620.00 551.50 488.50 322.00 235.00 122.00 75.00 201.00 488.50 529.50 727.50 5012.00
1982 823.50 650.50 661.50 527.50 348.50 139.00 136.50 129.50 186.00 416.50 712.50 745.50 5477.00
1983 647.00 553.50 521.00 451.00 255.00 188.00 116.00 65.50 259.00 475.00 526.00 933.00 4990.00
1984 698.00 602.50 540.00 443.50 373.00 204.00 113.50 88.50 225.50 476.50 605.00 921.22 a 5291.22
1985 880.00 721.50 679.00 479.50 331.50 190.00 33.50 89.00 253.00 436.00 928.50 887.00 5908.50
1986 614.50 669.00 520.00 532.00 348.00 134.50 174.50 42.50 224.00 395.50 620.50 730.50 5005.50
1987 753.50 362.50 i 515.00 379.00 277.00 154.50 83.50 72.50 136.50 314.50 488.50 757.50 3932.00
1988 759.50 a 637.00 616.00 437.50 312.50 192.93 a 69.50 90.50 212.50 368.50 552.00 709.00 4957.43
1989 767.50 884.00 679.00 389.50 308.00 139.50 89.50 103.50 147.00 404.50 568.50 703.00 5183.50
1990 700.50 745.50 599.50 405.00 288.00 183.50 38.00 45.50 139.50 430.00 556.50 934.50 5066.00
1991 834.00 499.50 0.00 z 467.50 296.00 216.00 71.00 79.00 166.00 441.50 548.50 659.00 4278.00
1992 659.00 544.00 505.00 394.00 252.00 105.50 63.50 64.00 248.50 356.00 586.00 826.00 4603.50
1993 934.50 704.00 555.00 405.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2599.00
1994 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 71.50 41.00 138.00 408.00 684.00 0.00 z 1342.50
1995 0.00 z 564.50 582.50 440.00 223.00 143.50 63.00 138.50 0.00 z 399.00 512.00 683.00 3749.00
1996 727.98 a 678.50 573.50 384.50 356.00 184.00 68.50 65.50 216.00 429.50 646.50 839.50 5169.98
1997 736.00 625.00 608.00 429.00 213.00 143.00 68.00 29.00 106.00 381.00 488.50 686.00 4512.50
1998 690.00 500.00 531.50 452.50 277.50 149.50 64.50 42.50 127.00 355.00 514.50 771.90 a 4476.40
1999 677.50 592.00 609.00 466.00 375.00 232.24 a 120.90 a 73.00 170.50 413.50 505.34 a 678.00 4912.99
2000 762.50 606.00 600.00 410.50 342.50 138.21 b 80.00 97.13 a 162.32 b 370.50 647.00 733.50 4950.17
2001 660.00 668.89 a 564.20 a 470.00 325.50 a 209.50 105.83 b 73.48 d 147.12 d 411.50 519.00 741.50 4896.51
2002 714.50 627.50 721.50 467.00 358.50 141.00 87.00 66.00 152.50 434.50 499.00 659.00 4928.00
2003 583.00 606.50 549.00 448.00 301.00 118.00 45.00 43.00 122.00 288.00 656.00 695.00 4454.50
2004 737.50 580.00 494.00 333.00 216.50 103.50 28.50 24.50 178.50 365.50 580.50 673.50 4315.50
2005 710.00 618.50 462.00 379.50 190.00 138.00 54.50 22.50 186.50 339.00 594.00 700.00 4394.50
2006 599.50 634.00 576.50 431.50 289.69 b 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2531.19
Period of Record Statistics
MEAN 763.98 636.67 607.71 454.37 313.83 179.24 102.00 97.52 194.64 401.49 592.43 731.40 5101.61
S.D. 116.85 83.44 71.56 57.55 57.74 46.18 37.95 41.36 48.65 53.77 82.27 84.90 437.50
SKEW 1.19 0.87 -0.01 0.08 -0.21 0.22 0.11 0.51 0.15 -0.09 0.80 0.52 -0.10
MAX 1220.50 914.50 786.00 583.50 434.00 293.00 184.50 214.50 295.50 507.50 928.50 934.50 6023.33
MIN 583.00 488.44 447.00 333.00 179.00 103.50 28.50 22.50 88.50 288.00 432.50 539.00 4216.00
NO YRS 71 73 74 74 74 73 74 74 73 72 74 71 63