SKAMANIA FISH HATCHERY, WASHINGTON

Monthly Total Heating Degree Days

(457696)

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
1965 0.00 z 664.16 c 613.00 470.00 442.50 245.00 85.50 83.00 282.00 330.00 556.50 863.50 4635.16
1966 824.50 692.50 703.50 480.50 382.00 259.00 140.50 130.00 197.50 499.00 621.50 760.00 5690.50
1967 744.50 672.50 760.50 635.50 394.00 151.50 81.00 35.50 142.00 456.00 626.00 900.50 5599.50
1968 882.00 526.50 566.00 592.50 377.50 219.50 94.50 159.50 217.00 492.50 637.50 940.50 5705.50
1969 753.50 l 753.00 635.50 518.00 302.50 110.50 133.00 167.50 201.00 478.00 584.00 769.50 4652.50
1970 848.00 544.00 673.00 623.00 391.50 150.00 96.00 102.00 281.50 468.00 621.00 879.00 5677.00
1971 853.50 657.00 789.00 582.00 362.00 303.50 114.50 46.50 269.00 531.00 694.50 869.50 6072.00
1972 917.50 730.50 587.50 619.00 329.50 210.50 63.50 74.00 299.50 467.00 591.00 975.50 5865.00
1973 912.50 632.50 665.00 512.00 328.00 221.50 91.50 178.50 206.50 482.50 753.00 734.00 5717.50
1974 959.00 711.50 689.50 549.50 444.00 201.00 146.50 101.00 122.00 410.00 611.00 733.50 5678.50
1975 830.50 758.00 736.50 667.50 387.50 243.50 87.00 192.00 144.50 465.50 718.50 767.50 5998.50
1976 773.50 751.00 756.50 561.50 374.50 297.00 145.50 148.50 186.00 445.00 562.00 815.00 5816.00
1977 949.00 633.50 759.50 492.00 491.50 170.00 134.00 74.50 286.50 464.50 741.00 799.00 5995.00
1978 850.50 666.00 607.50 555.00 460.00 182.00 129.50 148.50 281.00 389.50 786.50 922.50 5978.50
1979 1127.00 772.00 572.00 510.50 352.50 113.00 i 119.00 118.50 167.50 389.50 730.50 772.00 5631.00
1980 1033.33 a 768.00 730.50 498.10 a 433.00 330.50 132.00 169.50 213.50 421.00 617.00 737.50 6083.94
1981 689.00 671.00 595.00 531.50 384.92 a 307.00 203.50 138.50 250.00 538.00 609.00 802.00 5719.42
1982 882.50 701.50 666.00 607.00 355.00 152.00 115.00 94.50 204.50 421.50 696.50 802.50 5698.50
1983 705.00 585.00 540.00 501.00 311.50 248.00 159.50 92.00 265.50 444.00 586.50 1005.50 5443.50
1984 788.00 634.50 544.50 556.50 409.50 285.00 124.00 87.00 212.50 506.00 652.50 903.50 5703.50
1985 931.00 802.50 728.50 470.00 382.50 212.50 31.00 135.00 294.00 480.50 910.00 1042.50 6420.00
1986 749.00 665.50 498.00 554.00 376.50 139.50 174.00 30.50 273.50 366.50 606.00 847.50 5280.50
1987 864.00 608.00 612.00 442.50 313.00 182.00 137.00 109.50 188.00 313.00 532.00 915.00 5216.00
1988 879.50 673.50 640.00 470.50 393.00 237.50 145.00 156.00 262.00 342.00 610.00 770.50 5579.50
1989 767.00 910.00 691.00 386.50 353.50 194.50 193.50 167.00 189.00 529.50 665.00 867.00 5913.50
1990 805.50 787.00 616.50 472.00 446.00 235.00 99.00 127.50 237.00 650.00 681.00 1000.50 6157.00
1991 876.50 511.00 709.00 537.50 457.00 308.50 81.00 94.50 169.00 466.50 677.50 823.50 5711.50
1992 764.50 577.00 471.50 390.50 234.50 118.00 51.50 63.00 240.50 392.00 657.00 920.00 4880.00
1993 1008.00 796.00 634.00 499.50 251.00 213.50 187.00 97.50 149.00 318.50 847.00 802.00 5803.00
1994 741.00 786.50 556.50 276.50 m 287.00 229.50 67.50 46.50 136.50 492.50 825.50 839.50 5008.50
1995 784.50 611.50 640.00 529.00 306.00 219.00 64.00 0.00 z 117.50 429.00 482.50 789.00 4972.00
1996 798.50 758.00 597.50 451.50 395.00 219.00 64.00 88.50 272.00 475.50 714.00 897.00 5730.50
1997 944.50 714.50 723.00 603.00 274.00 245.50 135.00 103.00 198.50 552.00 543.50 810.50 5847.00
1998 784.00 584.89 a 579.50 473.00 368.50 164.00 38.00 68.50 129.00 422.00 590.00 863.50 5064.89
1999 761.50 672.00 659.00 516.00 409.50 247.00 120.00 70.00 168.00 384.50 546.00 722.50 5276.00
2000 850.00 681.00 702.00 442.00 348.50 158.00 105.50 105.00 175.00 393.00 760.50 827.50 5548.00
2001 832.00 689.50 587.50 524.00 293.00 223.50 78.00 42.37 a 143.00 441.50 573.00 795.50 5222.87
2002 819.00 656.00 718.50 491.00 383.00 145.00 46.00 67.50 156.00 406.50 563.00 733.00 5184.50
2003 662.00 612.50 595.50 490.50 325.00 128.50 34.00 26.00 129.50 316.00 708.00 779.00 4806.50
2004 913.50 650.50 523.50 395.50 298.00 129.00 23.50 33.00 200.50 365.50 639.00 746.00 4917.50
2005 781.00 627.00 522.00 467.00 233.00 194.00 28.50 42.00 235.50 374.00 671.00 865.50 5040.50
2006 693.00 716.00 661.00 449.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2519.00
Period of Record Statistics
MEAN 839.48 681.31 639.44 515.05 361.97 210.75 104.84 100.35 207.13 439.24 653.60 839.26 5612.27
S.D. 98.27 81.97 78.74 66.54 62.31 56.94 46.74 45.98 54.84 71.58 91.04 81.66 386.53
SKEW 0.63 0.23 -0.08 0.22 -0.17 0.17 0.10 0.19 0.08 0.33 0.73 0.63 -0.38
MAX 1127.00 910.00 789.00 667.50 491.50 330.50 203.50 192.00 299.50 650.00 910.00 1042.50 6420.00
MIN 662.00 511.00 471.50 386.50 233.00 110.50 23.50 26.00 117.50 313.00 482.50 722.50 4806.50
NO YRS 40 42 42 41 41 40 41 40 41 41 41 41 36