BONNEVILLE DAM, OREGON

Monthly Total Growing Degree Days

(350897)

Base Temperature = 40 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
1937 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 0.00 z 118.00 o 114.46 e 114.46
1938 58.90 a 64.08 b 163.00 450.00 a 439.00 f 634.50 f 985.00 834.93 a 824.48 a 528.55 a 112.76 a 117.44 e 4139.14
1939 59.00 g 37.33 a 233.00 432.00 608.00 611.00 896.00 947.00 741.00 479.00 210.50 145.70 a 5340.53
1940 13.95 a 112.50 296.50 415.00 661.50 817.00 900.50 965.00 753.50 543.00 88.50 70.50 5637.45
1941 22.00 115.00 373.50 452.00 566.00 692.00 993.00 860.50 617.00 451.50 247.00 89.50 5479.00
1942 0.52 a 44.50 183.50 412.50 503.50 608.00 951.00 931.50 758.50 538.00 103.50 54.00 5089.02
1943 11.50 53.00 137.00 404.50 460.50 595.00 847.00 800.50 801.50 476.50 142.50 50.00 4779.50
1944 19.50 36.50 129.00 315.50 503.50 602.50 858.50 831.00 733.50 581.00 134.00 28.50 4773.00
1945 94.00 80.00 105.50 271.50 556.00 640.50 886.00 855.00 607.50 448.50 110.50 56.50 4711.50
1946 45.00 62.00 157.50 317.50 569.00 591.00 853.50 853.50 651.50 308.50 66.00 98.50 4573.50
1947 38.00 94.50 263.50 378.00 635.00 598.00 800.00 773.50 698.00 419.50 156.50 51.00 4905.50
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 200.50 112.00 176.50 285.50 433.50 553.50 856.00 827.00 719.50 473.00 285.50 111.50 5034.00
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 80.50 181.50 383.00 590.50 768.00 939.50 868.50 724.00 446.00 196.00 39.50 5356.00
2007 52.50 88.00 276.00 344.00 564.50 695.00 980.00 860.50 658.50 359.50 159.00 37.50 5075.00
2008 10.00 97.00 111.50 187.50 513.50 384.50 j 864.50 881.00 703.00 406.50 231.00 60.00 4065.50
2009 44.00 26.00 84.00 285.00 528.50 712.00 926.90 a 887.50 767.50 371.00 151.00 10.50 4793.90
2010 57.00 136.00 218.00 291.00 413.00 575.50 833.50 866.00 679.50 486.00 183.00 36.50 4775.00
2011 90.50 48.00 108.00 205.50 397.00 606.00 769.50 873.00 765.50 455.50 119.00 40.50 4478.00
2012 32.00 50.00 110.50 332.00 492.00 577.00 809.00 930.50 737.00 462.50 199.50 71.50 4803.50
2013 20.50 76.50 197.50 40.00 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 294.50
Period of Record Statistics
MEAN 51.12 82.35 185.57 329.17 523.66 662.26 861.56 861.45 705.54 457.78 177.40 62.95 4956.98
S.D. 41.49 43.21 72.62 70.84 70.90 69.01 71.35 66.44 71.71 70.98 63.95 33.46 367.32
SKEW 0.93 0.56 0.60 -0.25 0.17 0.42 -0.14 0.20 -0.07 0.20 0.13 0.33 0.36
MAX 200.50 199.50 373.50 458.00 705.50 829.00 1010.50 1030.50 833.00 647.50 322.00 145.70 5981.50
MIN 0.00 6.00 52.00 168.50 377.50 540.00 682.50 738.50 570.00 258.00 66.00 0.00 4020.50
NO YRS 73 75 74 74 73 72 75 74 75 75 75 76 68