NEWHALEM, WASHINGTON

Monthly Total Heating Degree Days

(455840)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1959 939.00 781.00 730.57 a 500.50 371.00 156.50 65.00 110.50 263.50 440.00 746.00 837.00 5940.57
1960 950.00 741.57 a 698.57 b 518.00 376.00 181.00 42.00 141.50 161.00 381.50 725.50 815.00 5731.64
1961 765.00 703.50 694.50 534.50 319.50 96.00 39.50 16.00 219.00 547.00 781.50 911.83 b 5627.83
1962 924.00 677.50 767.00 437.00 423.50 184.66 a 124.00 105.50 146.00 411.50 640.00 808.50 5649.16
1963 1017.50 612.50 682.50 529.00 309.00 212.50 114.50 43.50 88.50 403.50 731.00 834.00 5578.00
1964 874.50 765.00 786.00 598.50 422.50 208.50 99.00 146.00 239.00 399.50 745.50 1031.00 6315.00
1965 924.50 779.00 674.50 476.00 378.00 178.00 50.50 74.50 207.00 380.50 589.00 905.50 5617.00
1966 972.50 756.00 721.50 476.50 309.50 215.00 101.00 72.00 124.00 499.50 666.50 804.50 5718.50
1967 872.50 732.00 555.50 i 564.50 339.00 91.50 45.47 a 22.50 73.39 b 470.00 614.50 949.50 4774.86
1968 951.00 641.50 639.50 587.50 302.00 209.50 55.50 112.00 181.00 530.00 691.00 1049.00 5949.50
1969 1233.50 796.50 669.00 534.50 226.00 89.50 113.50 103.50 230.00 471.50 608.50 800.50 5876.50
1970 922.50 618.00 653.50 604.50 332.50 113.50 72.50 56.50 272.40 e 481.50 687.50 966.00 5780.90
1971 1048.50 780.50 847.00 559.00 305.00 282.50 116.00 21.00 232.00 510.00 754.50 1012.67 a 6468.67
1972 1078.00 827.57 b 740.42 e 625.00 278.00 190.00 62.00 51.50 305.50 457.00 661.00 1034.00 6310.00
1973 992.50 694.00 679.50 491.00 314.50 237.22 c 85.00 105.50 132.32 b 0.00 z 780.00 b 772.50 5284.04
1974 963.50 748.50 754.69 b 409.00 f 402.00 146.54 d 83.70 a 52.00 92.78 c 376.43 c 651.60 e 772.70 d 5044.44
1975 932.58 a 865.67 d 761.64 b 591.50 272.00 f 226.11 c 42.00 i 138.90 e 88.39 b 510.90 e 794.00 865.86 b 5775.56
1976 885.71 c 815.76 b 840.62 a 527.50 351.50 266.50 106.95 a 135.22 b 105.52 a 443.76 d 616.20 e 798.25 c 5893.49
1977 906.20 c 633.50 767.00 445.50 397.32 a 122.22 c 124.52 a 72.00 249.11 b 487.50 826.15 d 934.59 d 5965.61
1978 878.16 b 713.46 b 626.50 502.76 a 233.50 k 79.00 i 76.00 103.00 235.50 g 403.00 677.50 f 862.50 f 3302.88
1979 1079.12 b 696.00 f 660.00 533.50 281.98 e 172.00 74.92 a 43.40 a 117.12 d 399.12 c 699.23 d 810.28 b 4870.67
1980 1064.00 752.88 c 767.00 403.93 b 334.28 a 231.21 a 48.00 h 121.62 e 216.72 a 398.02 c 673.89 c 864.00 5827.55
1981 683.00 727.50 599.69 b 578.00 345.17 e 299.00 133.30 a 49.50 203.79 a 534.20 c 640.71 b 887.50 5681.37
1982 1017.50 849.00 745.00 624.50 368.00 120.00 153.00 118.00 200.00 494.50 825.00 871.00 6385.50
1983 819.00 676.50 583.50 466.00 264.50 211.50 157.50 48.00 280.50 539.50 682.50 1093.00 5822.00
1984 853.00 735.50 612.00 567.50 467.00 213.00 87.50 78.50 271.50 563.00 784.00 1044.50 6277.00
1985 911.00 875.00 748.00 549.00 328.00 185.00 9.00 67.50 251.50 547.50 1051.00 929.50 6452.00
1986 775.00 798.50 604.00 576.50 371.50 112.00 151.00 7.50 230.50 375.50 747.50 850.50 5600.00
1987 912.00 0.00 z 637.00 399.50 282.00 142.50 71.50 67.00 131.00 342.00 583.50 0.00 z 3568.00
1988 0.00 z 0.00 z 721.50 488.50 0.00 z 0.00 z 102.50 79.00 239.00 355.00 730.50 861.50 3577.50
1989 937.00 954.00 785.50 422.00 353.00 123.00 86.00 85.50 104.00 456.00 691.50 790.50 5788.00
1990 867.00 907.00 693.00 425.00 355.00 210.50 46.00 38.50 69.00 582.50 693.00 1140.00 6026.50
1991 1012.50 664.00 766.00 518.50 368.50 235.50 45.50 75.50 123.00 439.00 687.00 807.00 5742.00
1992 821.50 629.00 442.00 407.00 222.00 93.50 66.00 45.50 279.50 412.00 705.50 1010.60 a 5134.10
1993 1114.00 764.50 635.50 519.50 193.50 215.00 167.50 87.50 165.50 358.50 840.50 863.00 5924.50
1994 745.00 842.00 646.50 404.50 250.50 205.00 50.50 33.50 104.00 500.00 898.00 951.50 5631.00
1995 852.50 708.00 703.00 481.50 194.50 160.50 57.00 180.00 73.00 531.00 660.00 872.50 5473.50
1996 974.50 799.00 701.00 505.50 474.00 181.50 87.00 86.00 273.50 520.50 818.00 1076.50 6497.00
1997 975.00 785.00 792.50 550.50 276.50 217.50 100.50 27.00 166.00 507.50 615.50 859.00 5872.50
1998 958.00 672.50 667.50 464.50 296.50 123.50 32.00 36.00 93.00 454.50 694.00 976.50 5468.50
1999 871.50 801.00 779.50 557.50 447.00 294.50 111.50 60.50 165.00 482.00 655.00 846.00 6071.00
2000 921.00 776.56 b 740.00 459.50 380.27 a 188.00 95.00 107.00 207.50 448.50 766.00 896.00 5985.32
2001 809.50 773.63 a 666.00 530.00 351.50 224.00 81.00 52.00 160.00 522.00 650.00 911.50 5731.13
2002 889.50 802.50 875.50 542.50 390.50 158.50 79.50 58.50 179.50 469.00 644.00 811.00 5900.50
2003 753.00 701.50 733.50 518.50 351.00 127.50 40.50 20.50 131.50 384.50 807.50 857.00 5426.50
2004 965.00 702.00 634.50 348.50 270.00 117.50 32.00 49.50 241.00 420.50 687.50 799.00 5267.00
2005 905.00 704.00 616.00 426.00 207.50 221.50 53.50 32.50 211.50 447.50 748.00 881.00 5454.00
2006 814.00 786.50 719.50 472.50 313.50 128.50 47.00 55.00 140.50 452.00 785.50 900.50 5615.00
2007 956.00 706.50 708.50 532.50 284.00 199.50 31.50 72.50 184.00 542.50 740.00 922.00 5879.50
2008 1015.00 795.00 794.00 638.50 333.00 271.50 66.50 96.50 173.50 499.00 622.50 1017.00 6322.00
2009 958.93 a 778.00 861.00 539.50 0.00 z 117.00 42.50 65.00 133.50 494.50 732.50 994.00 5716.43
2010 742.00 641.00 637.00 519.00 379.00 211.00 79.50 76.00 195.50 415.50 798.00 899.00 5592.50
2011 917.00 845.50 771.00 675.00 415.50 223.50 131.50 46.00 122.00 503.50 826.50 906.50 6383.50
2012 948.00 761.00 835.00 488.00 340.00 280.00 71.50 25.00 106.50 448.00 676.00 902.50 5881.50
2013 952.50 772.00 697.00 19.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 34.50 z 2421.50
Period of Record Statistics
MEAN 922.60 753.26 709.49 513.89 332.92 185.03 81.11 71.75 176.49 461.20 720.18 903.94 5856.98
S.D. 101.32 74.83 80.27 68.33 66.15 56.19 36.59 37.95 64.93 60.48 86.17 90.53 331.65
SKEW 0.19 0.18 -0.37 -0.08 -0.13 0.05 0.46 0.61 0.10 -0.08 1.12 0.66 0.26
MAX 1233.50 954.00 875.50 675.00 474.00 299.00 167.50 180.00 305.50 582.50 1051.00 1140.00 6497.00
MIN 683.00 612.50 442.00 348.50 193.50 89.50 9.00 7.50 69.00 342.00 583.50 772.50 5134.10
NO YRS 54 52 54 53 50 52 52 54 53 53 53 52 44