SEQUIM 2 E, WASHINGTON

Monthly Total Heating Degree Days

(457544)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1980 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 495.00 643.00 716.00 1854.00
1981 722.00 656.00 626.50 567.00 413.50 311.50 194.50 144.50 307.00 538.00 628.50 805.50 5914.50
1982 893.50 710.00 744.50 659.50 460.50 228.50 211.50 204.00 252.00 496.50 751.50 801.50 6413.50
1983 732.00 625.00 625.00 565.00 366.50 249.00 177.50 144.50 340.50 570.50 602.00 1022.00 6019.50
1984 776.00 671.00 632.50 566.00 471.00 291.00 204.00 179.00 346.00 559.50 688.00 923.50 6307.50
1985 876.50 754.00 751.50 575.00 428.00 279.50 126.50 183.50 334.00 499.00 937.50 909.50 6654.50
1986 705.50 725.50 612.00 602.00 432.00 249.50 243.50 108.50 300.50 511.00 667.00 793.00 5950.00
1987 794.00 611.00 653.00 521.50 381.50 252.50 176.50 176.50 276.50 497.50 580.00 795.00 5715.50
1988 863.00 698.00 717.00 566.50 443.00 311.00 198.00 184.00 335.89 b 460.50 657.00 780.00 6213.89
1989 829.50 949.00 750.50 520.50 420.00 237.50 193.50 189.50 263.00 538.00 642.00 731.00 6264.00
1990 769.50 785.50 712.00 506.00 398.00 268.50 117.00 127.50 239.00 535.00 632.00 959.00 6049.00
1991 866.50 588.50 747.50 562.00 414.50 319.00 177.50 142.00 242.00 538.50 621.50 733.00 5952.50
1992 746.50 650.50 601.50 496.00 372.00 191.00 144.50 186.50 368.50 476.50 660.00 870.00 5763.50
1993 1046.50 820.00 670.00 537.00 273.50 255.00 217.50 162.50 340.00 473.50 790.00 796.00 6381.50
1994 731.00 755.50 657.00 498.50 361.50 310.00 153.00 129.00 235.00 577.00 746.50 839.00 5993.00
1995 798.00 669.00 695.00 550.50 336.50 220.00 127.00 238.00 239.00 509.00 605.50 808.00 5795.50
1996 868.50 771.00 704.00 515.50 503.00 296.00 142.00 0.00 z 340.00 568.00 741.50 905.50 6355.00
1997 805.00 690.00 704.00 593.00 336.50 246.50 124.00 99.50 217.50 459.00 610.50 782.00 5667.50
1998 804.50 602.50 630.00 566.50 331.00 218.00 109.50 116.50 227.00 533.50 613.00 827.50 5579.50
1999 789.50 680.50 722.50 615.00 488.25 a 337.00 272.36 c 145.00 328.89 c 550.25 a 614.50 758.95 c 6302.69
2000 868.52 a 594.50 f 575.00 f 419.00 h 436.07 a 238.27 d 147.00 195.00 332.88 d 518.98 b 740.69 a 835.00 4312.41
2001 754.50 763.00 707.50 598.33 c 446.00 304.14 a 284.68 a 276.33 b 377.50 553.00 653.00 858.00 6575.98
2002 798.25 a 395.50 n 789.00 570.00 450.50 217.00 141.50 156.00 298.50 540.50 649.00 760.00 5370.25
2003 695.00 698.50 625.00 544.00 431.50 191.00 117.00 123.50 219.00 454.00 756.50 803.50 5658.50
2004 785.50 673.50 610.00 454.50 348.50 189.00 94.00 89.50 307.50 476.50 666.50 715.00 5410.00
2005 793.00 746.50 610.00 522.50 311.50 242.50 130.50 152.50 303.50 475.50 731.50 777.50 5797.00
2006 737.00 746.50 676.50 552.50 379.00 200.50 125.00 194.00 277.50 533.00 736.50 807.00 5965.00
2007 860.00 677.50 663.00 579.00 450.00 287.50 121.50 137.50 308.00 550.00 710.50 835.50 6180.00
2008 879.50 720.00 783.50 681.00 414.00 323.00 212.00 158.00 275.00 541.00 571.50 928.00 6486.50
2009 864.00 764.50 773.00 555.50 410.00 205.00 103.00 147.50 259.00 484.00 653.50 907.00 6126.00
2010 665.00 612.00 666.00 538.50 460.00 270.50 171.50 202.50 269.50 491.00 737.50 776.50 5860.50
2011 796.00 791.00 682.50 657.00 455.50 268.00 189.50 141.00 218.00 529.00 745.50 864.50 6337.50
2012 869.00 706.50 738.50 544.50 425.50 312.50 192.00 122.50 281.50 506.00 651.00 809.00 6158.50
2013 858.00 649.50 702.50 17.00 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 2210.00
Period of Record Statistics
MEAN 807.30 708.44 686.97 560.66 407.78 260.00 166.85 159.88 289.36 516.31 679.84 825.23 6051.48
S.D. 74.77 74.86 55.32 49.05 53.94 43.47 48.52 40.47 46.61 34.83 74.67 72.00 312.42
SKEW 0.68 0.90 0.13 0.51 -0.54 -0.01 0.62 0.72 0.05 -0.11 1.23 0.73 0.01
MAX 1046.50 949.00 789.00 681.00 503.00 337.00 284.68 276.33 377.50 577.00 937.50 1022.00 6654.50
MIN 665.00 588.50 601.50 454.50 273.50 189.00 94.00 89.50 217.50 454.00 571.50 715.00 5410.00
NO YRS 33 31 32 31 32 32 32 31 32 33 33 33 29