SHELTON, WASHINGTON

Monthly Total Heating Degree Days

(457584)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199904
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 215.17 a 448.97 b 743.50 851.00 2258.64
1932 857.50 751.00 598.00 451.50 319.50 137.68 b 161.20 a 83.18 a 143.00 363.00 553.97 a 892.00 5311.53
1933 865.00 823.00 691.30 a 508.97 a 408.00 199.14 a 88.87 a 19.00 y 152.00 371.50 571.80 e 0.00 z 4679.57
1934 578.50 557.00 471.50 314.46 b 167.50 150.00 c 90.23 c 58.38 a 194.50 370.40 b 551.00 755.37 a 4258.84
1935 845.00 654.77 b 761.50 537.86 b 298.00 160.86 a 111.71 b 77.00 139.00 472.50 731.50 748.00 5537.70
1936 734.50 892.00 685.21 b 175.50 k 224.00 113.04 b 68.09 c 18.50 209.50 349.50 667.50 698.50 4660.33
1937 1094.00 724.50 567.50 426.21 a 336.50 99.50 f 40.82 a 69.75 c 149.00 328.50 557.00 694.00 4987.77
1938 740.00 655.50 651.50 409.50 264.57 b 126.50 62.60 e 70.00 72.50 423.00 677.50 755.50 4908.67
1939 696.50 719.50 629.00 368.50 294.50 181.07 b 77.50 54.00 144.50 396.00 540.50 645.50 4747.07
1940 711.00 609.50 525.00 376.50 195.00 71.50 45.00 42.50 94.00 338.50 717.50 715.00 4441.00
1941 738.00 600.00 471.00 377.00 300.00 167.50 33.00 71.50 226.50 388.50 574.50 766.50 4714.00
1942 855.50 660.50 651.50 419.50 309.50 188.50 48.50 38.00 141.72 a 351.00 674.00 712.50 5050.72
1943 960.00 660.50 696.00 418.50 374.50 202.00 0.00 z 111.00 0.00 z 433.47 b 611.38 a 627.00 h 4467.34
1944 775.00 697.00 666.50 484.00 331.50 180.50 79.00 71.00 122.00 323.50 601.50 890.00 5221.50
1945 734.50 648.00 678.50 538.50 243.19 b 246.00 52.00 72.50 246.00 414.00 634.00 775.50 5282.69
1946 753.00 636.50 639.50 488.50 174.12 a 226.00 76.00 66.00 203.50 543.00 722.00 719.00 5247.12
1947 922.50 587.00 550.00 434.50 215.00 153.50 83.50 57.50 183.50 395.00 619.00 719.00 4920.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 74.48 a 71.00 84.00 210.50 457.00 661.03 a 906.00 2464.02
1949 1110.83 a 777.78 a 606.00 453.10 a 227.00 204.00 103.00 103.33 a 121.50 i 537.52 c 491.00 789.00 5402.57
1950 1164.05 a 704.50 695.00 560.50 399.50 167.50 61.50 46.00 201.00 467.00 627.50 606.50 5700.55
1951 825.00 674.50 784.00 451.50 324.50 132.00 55.50 60.00 176.50 429.00 646.03 a 866.00 5424.53
1952 880.00 700.00 692.00 479.00 322.29 b 225.00 84.00 79.16 c 146.50 319.50 688.00 750.20 a 5365.65
1953 640.67 a 642.00 661.50 518.00 373.03 a 235.34 a 76.98 a 71.82 a 155.50 350.50 532.24 a 681.00 4938.59
1954 876.27 a 639.50 707.00 530.00 315.50 249.00 145.00 111.00 164.50 441.00 494.00 756.50 5429.27
1955 776.50 726.00 764.00 613.50 419.00 197.50 130.50 102.09 b 232.50 446.06 d 741.50 817.00 5966.14
1956 814.50 819.00 734.00 434.50 256.50 175.00 i 64.50 75.50 211.50 474.50 689.50 748.65 a 5322.65
1957 976.50 700.50 647.38 a 415.50 203.50 115.00 115.50 113.15 a 61.00 437.00 680.00 727.50 5192.53
1958 731.00 519.56 a 681.00 499.00 181.00 92.50 13.00 14.50 185.50 377.00 677.00 652.00 4623.06
1959 769.50 665.00 655.50 467.00 365.50 158.50 61.45 c 103.00 213.00 409.50 649.50 776.50 5293.95
1960 820.50 688.00 646.00 453.50 372.50 151.00 34.00 105.50 208.50 385.50 644.50 802.00 5311.50
1961 690.50 571.00 621.00 496.50 318.00 99.00 33.50 7.50 210.50 469.50 724.50 781.50 5023.00
1962 838.50 620.50 698.50 436.00 408.50 180.50 109.50 74.50 174.50 391.00 569.50 707.00 5208.50
1963 941.50 492.00 662.00 486.50 303.00 0.00 z 86.50 0.00 z 85.00 0.00 z 616.50 0.00 z 3673.00
1964 0.00 z 0.00 z 655.50 537.50 339.00 174.31 a 101.00 100.00 191.00 427.50 702.00 893.00 4120.81
1965 808.50 611.50 607.50 451.00 384.50 146.00 37.00 58.50 227.00 347.50 508.00 787.00 4974.00
1966 802.50 670.00 659.00 438.00 294.50 203.50 82.50 48.00 115.50 430.50 596.50 647.00 4987.50
1967 710.50 616.00 707.00 559.50 296.50 82.00 31.00 11.00 83.00 371.00 597.50 785.00 4850.00
1968 808.00 605.00 557.00 503.50 291.00 184.00 70.50 95.50 178.00 463.00 587.50 882.00 5225.00
1969 1020.50 736.50 629.50 507.50 247.50 68.50 68.00 109.00 169.50 461.50 573.50 706.50 5298.00
1970 784.00 573.00 598.50 535.00 338.50 110.50 78.50 70.50 250.00 492.50 615.00 845.00 5291.00
1971 788.50 672.00 750.50 509.50 282.50 240.00 78.00 27.00 224.00 452.50 581.50 841.00 5447.00
1972 879.00 726.00 594.00 596.00 252.00 139.00 60.00 48.00 267.00 485.50 623.00 872.00 5541.50
1973 851.00 656.00 615.50 474.50 277.50 198.00 79.50 141.00 163.50 427.50 702.50 693.00 5279.50
1974 868.00 676.00 661.00 500.00 413.50 160.00 115.50 56.00 86.90 a 414.50 561.96 b 717.50 5230.86
1975 796.50 722.00 705.50 586.00 328.00 210.00 50.00 110.00 169.50 444.50 621.00 773.00 5516.00
1976 738.00 723.00 734.00 521.50 316.50 240.50 98.50 99.50 141.50 399.00 602.50 728.00 5342.50
1977 839.50 555.50 649.50 404.00 369.50 122.50 90.50 48.50 208.50 442.00 686.00 766.00 5182.00
1978 695.50 561.50 529.50 457.00 323.50 77.00 28.00 59.00 190.50 355.47 a 759.00 910.50 4946.47
1979 959.00 689.50 532.50 430.00 254.00 141.00 46.00 24.00 98.00 346.00 681.50 666.00 4867.50
1980 934.00 642.83 b 628.00 384.50 286.50 197.50 39.50 73.50 134.50 368.00 536.00 650.50 4875.33
1981 705.50 592.50 505.50 455.00 284.00 182.50 70.00 24.00 153.00 478.50 589.00 757.00 4796.50
1982 816.00 658.00 650.50 550.00 293.50 96.50 67.50 51.50 132.00 422.50 712.50 814.00 5264.50
1983 682.50 566.00 545.00 437.50 228.00 148.00 73.50 20.50 221.50 455.50 568.00 940.00 4886.00
1984 702.50 631.50 533.00 501.50 371.00 168.50 49.50 41.00 176.50 483.00 640.00 895.00 5193.00
1985 889.00 739.00 672.00 443.50 276.50 140.50 8.00 42.50 218.50 419.50 860.50 885.00 5594.50
1986 684.00 641.00 488.00 495.50 283.00 73.50 97.00 2.00 188.00 344.50 604.00 754.00 4654.50
1987 786.50 574.00 548.00 376.00 249.50 87.00 67.50 39.00 95.50 340.00 537.00 830.50 4530.50
1988 831.00 612.50 620.50 423.50 318.00 188.00 60.50 54.50 173.00 306.00 603.00 772.50 4963.00
1989 764.50 832.50 692.00 365.50 284.50 120.00 74.00 49.00 96.00 391.50 574.00 678.50 4922.00
1990 720.50 726.00 579.50 370.00 298.50 161.00 27.50 26.00 62.50 455.50 580.50 949.00 4956.50
1991 821.50 516.00 679.00 488.50 327.50 204.00 31.50 32.00 98.00 421.50 552.00 699.50 4871.00
1992 692.50 567.00 459.00 391.00 168.50 87.00 17.50 26.50 174.50 362.00 613.50 843.50 4402.50
1993 905.50 717.50 565.50 442.00 167.00 133.50 97.00 49.00 138.50 337.50 734.00 777.50 5064.50
1994 660.00 714.00 531.00 380.00 227.00 163.00 28.50 23.50 59.50 444.00 733.50 811.50 4775.50
1995 724.50 590.50 599.00 441.50 195.00 130.00 25.00 89.50 0.00 z 414.50 513.50 772.00 4495.00
1996 778.50 696.50 579.50 416.50 378.00 160.50 47.00 0.00 z 208.50 457.50 693.00 874.00 5289.50
1997 793.50 654.50 668.57 a 502.50 219.50 177.00 50.00 23.50 116.50 434.00 560.50 809.00 5009.07
1998 755.50 613.50 587.00 488.00 305.00 150.00 41.50 35.50 111.00 428.00 583.50 843.72 a 4942.22
1999 750.41 b 702.50 695.00 503.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2651.41
Period of Record Statistics
MEAN 810.05 660.57 629.85 465.37 294.15 157.03 67.43 61.26 162.98 412.33 627.46 778.06 5085.68
S.D. 111.26 77.86 75.45 61.93 65.60 47.95 31.29 31.46 51.72 53.19 74.22 80.54 334.20
SKEW 0.94 0.39 -0.33 0.08 -0.12 -0.07 0.53 0.24 -0.27 0.06 0.45 0.14 -0.08
MAX 1164.05 892.00 784.00 613.50 419.00 249.00 161.20 141.00 267.00 543.00 860.50 949.00 5966.14
MIN 578.50 492.00 459.00 314.46 167.00 68.50 8.00 2.00 59.50 306.00 491.00 606.50 4258.84
NO YRS 66 66 67 66 66 64 66 64 65 67 68 65 56