BONNEVILLE DAM, OREGON

Monthly Total Growing Degree Days

(350897)

Base Temperature = 40 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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 770.00 776.50 634.50 407.50 100.50 18.50 2707.50
1949 0.00 a 44.50 139.50 386.00 577.00 634.50 779.00 812.00 713.50 258.00 270.50 68.00 4682.50
1950 3.50 19.50 95.00 251.00 439.00 646.50 804.50 897.00 687.50 366.00 147.50 83.00 4440.00
1951 33.50 49.00 83.00 400.50 488.50 658.50 880.50 788.50 739.00 418.00 132.00 43.00 4714.00
1952 2.50 31.50 107.47 a 364.50 532.50 586.50 888.00 865.50 764.00 647.50 95.50 15.50 4900.97
1953 196.00 112.00 176.50 285.50 433.50 553.50 856.00 827.00 719.50 473.00 285.50 111.50 5029.50
1954 35.50 62.50 109.00 298.50 526.00 557.00 703.50 738.50 661.00 377.00 290.00 24.00 4382.50
1955 18.00 26.00 52.00 168.50 416.50 625.00 682.50 803.50 644.00 431.00 118.50 35.00 4020.50
1956 17.00 6.00 130.50 358.39 b 602.50 588.50 892.00 809.00 671.50 381.50 103.00 112.00 4671.89
1957 0.00 42.00 122.50 341.50 594.00 681.00 799.50 776.00 812.00 386.00 124.50 76.00 4755.00
1958 80.50 176.00 133.50 306.50 659.50 766.00 981.00 958.50 693.50 501.00 195.00 84.00 5535.00
1959 62.50 42.00 158.00 350.50 454.50 669.00 873.50 805.50 594.00 423.00 139.50 42.50 4614.50
1960 3.50 68.50 169.50 298.50 436.87 d 674.50 910.50 778.50 657.00 458.00 176.00 18.00 4649.37
1961 84.50 130.50 170.50 292.50 480.00 780.00 920.00 968.50 609.50 389.50 72.93 a 70.50 4968.93
1962 70.50 76.22 a 103.00 387.50 377.50 654.00 812.00 813.50 713.00 453.00 222.00 81.50 4763.72
1963 26.50 105.00 165.50 224.50 529.00 617.50 722.00 835.50 813.00 485.50 204.00 12.50 4740.50
1964 65.00 61.50 135.50 239.50 434.50 594.00 808.00 759.50 613.50 482.50 97.50 66.50 4357.50
1965 53.00 89.50 203.50 358.00 440.00 602.50 890.50 531.50 k 599.50 534.50 260.69 a 49.50 4081.19
1966 27.00 g 37.50 137.00 357.00 482.00 646.03 a 785.00 840.00 718.50 421.00 213.50 77.00 4714.53
1967 123.00 118.00 123.00 236.00 524.50 753.50 933.00 1030.50 833.00 477.50 216.00 69.50 5437.50
1968 31.50 173.50 269.50 281.00 509.00 655.50 864.50 756.00 675.50 383.00 176.00 45.00 4820.00
1969 5.00 13.00 207.00 321.50 576.50 762.00 799.50 763.00 682.00 378.50 227.50 58.50 4794.00
1970 26.50 140.00 176.00 214.50 499.50 736.50 851.50 841.50 587.50 382.50 183.50 32.50 4672.00
1971 97.00 110.50 76.00 250.00 503.50 540.00 829.50 907.50 602.00 348.00 124.00 29.00 4417.00
1972 71.00 103.00 229.00 180.00 558.50 628.50 878.00 908.50 570.00 400.00 193.00 88.50 4808.00
1973 24.00 77.50 165.50 329.00 551.00 658.00 849.50 765.00 677.50 427.00 97.00 106.00 4727.00
1974 95.50 79.00 170.00 291.50 438.00 683.00 785.50 843.00 784.50 495.50 190.00 117.50 4973.00
1975 62.00 45.50 90.50 174.00 495.50 621.00 843.50 748.50 798.00 425.00 171.50 94.50 4569.50
1976 86.00 61.50 117.50 267.50 521.00 567.50 817.00 748.50 725.00 471.00 252.50 66.00 4701.00
1977 19.00 122.50 150.00 384.00 399.50 720.00 820.00 982.00 596.50 461.50 175.50 118.50 4949.00
1978 23.50 94.00 264.00 313.50 467.00 748.50 865.50 840.50 620.00 518.50 98.50 54.00 4907.50
1979 0.00 43.50 252.00 323.00 576.00 708.00 885.00 835.50 768.00 522.00 120.00 102.00 5135.00
1980 1.19 e 46.00 155.50 393.50 517.00 581.50 860.00 782.50 679.00 488.54 d 217.00 129.50 4851.23
1981 94.50 113.04 a 278.00 324.00 515.00 611.00 800.83 a 955.00 697.50 406.50 250.50 87.50 5133.37
1982 78.50 101.50 183.50 250.00 511.50 741.00 811.00 851.00 673.00 418.50 121.00 67.50 4808.00
1983 118.50 120.50 285.50 348.50 591.00 629.50 773.00 850.50 613.50 448.50 239.00 19.50 5037.50
1984 70.50 73.50 262.00 273.00 445.50 590.50 861.00 865.50 630.00 354.50 152.00 27.00 4605.00
1985 4.00 49.00 145.00 376.00 544.50 708.50 1010.50 838.50 588.50 422.00 96.50 0.00 4783.00
1986 34.00 105.26 a 322.00 313.50 526.00 775.50 768.50 988.00 617.00 548.50 239.00 18.00 5255.26
1987 23.00 120.00 235.00 448.00 616.00 751.00 830.00 895.50 785.17 a 616.50 283.50 70.00 5673.67
1988 17.00 142.50 228.00 375.50 516.50 680.50 885.50 888.00 739.50 631.00 231.50 68.50 5404.00
1989 91.50 9.50 155.50 442.50 544.50 750.00 798.50 826.50 789.50 481.50 270.50 66.00 5226.00
1990 119.00 84.00 260.50 431.00 511.00 682.50 949.50 947.00 808.50 419.00 271.50 51.50 5535.00
1991 43.00 199.50 149.50 301.50 438.00 570.50 915.00 920.00 817.00 531.00 197.00 91.00 5173.00
1992 113.00 184.50 370.00 421.00 705.50 829.00 946.00 943.50 704.00 526.00 199.00 40.00 5981.50
1993 8.00 33.00 154.50 314.00 624.00 637.00 723.50 850.00 790.00 596.50 113.00 69.00 4912.50
1994 120.50 31.00 263.50 403.00 599.50 645.50 933.00 923.50 794.50 485.00 72.50 74.50 5346.00
1995 37.00 182.00 217.50 334.50 619.00 661.50 908.50 806.50 795.00 456.50 322.00 67.00 5407.00
1996 71.00 82.50 189.00 368.50 435.55 a 640.00 940.50 849.50 616.50 450.00 167.00 49.00 4859.05
1997 31.52 a 97.50 0.00 z 304.50 647.50 666.00 895.50 951.50 772.50 432.50 234.50 46.00 5079.52
1998 68.00 122.50 231.00 352.50 491.00 676.50 913.50 878.00 793.00 461.00 249.50 109.50 5346.00
1999 109.50 93.00 186.00 298.00 445.00 622.50 813.50 895.50 735.00 501.00 274.00 130.00 5103.00
2000 30.00 79.75 a 163.00 412.50 528.55 a 738.10 a 832.50 856.00 714.00 470.00 85.86 a 9.50 4919.77
2001 14.98 a 54.00 248.57 d 290.00 569.00 617.50 807.00 887.50 754.50 448.50 232.00 53.50 4977.06
2002 53.50 108.00 139.00 345.50 496.00 714.83 a 916.50 862.50 728.00 463.00 208.50 31.00 5066.33
2003 111.00 104.00 241.50 321.50 519.50 770.00 944.00 917.50 781.00 542.00 114.00 26.00 5392.00
2004 27.50 84.00 344.50 458.00 568.50 742.50 977.00 940.50 657.50 491.00 229.50 101.50 5622.00
2005 72.50 93.50 314.00 347.50 617.50 644.50 929.00 934.50 642.50 500.00 151.00 39.50 5286.00
2006 139.00 80.50 187.00 384.50 605.65 d 758.57 b 532.50 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2155.22
Period of Record Statistics
MEAN 54.70 85.44 185.80 325.29 521.92 668.15 853.85 858.38 701.62 458.15 184.40 62.28 4960.00
S.D. 43.87 45.83 70.58 67.58 70.68 68.13 71.20 70.65 74.58 71.76 65.92 33.13 376.79
SKEW 0.76 0.47 0.53 -0.28 0.25 0.21 -0.15 0.27 0.01 0.32 0.02 0.18 0.29
MAX 196.00 199.50 370.00 458.00 705.50 829.00 1010.50 1030.50 833.00 647.50 322.00 130.00 5981.50
MIN 0.00 6.00 52.00 168.50 377.50 540.00 682.50 738.50 570.00 258.00 72.50 0.00 4020.50
NO YRS 57 58 57 58 58 58 58 57 58 58 58 58 54