BONNEVILLE DAM, OREGON

Monthly Total Growing Degree Days

(350897)

Base Temperature = 50 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 12.00 o 8.35 e 8.35
1938 0.00 a 0.00 b 10.50 151.03 a 192.50 f 394.50 f 675.00 524.93 a 524.48 a 222.68 a 5.69 a 1.79 e 2116.11
1939 0.00 g 0.00 a 56.50 145.00 298.00 311.00 586.00 637.00 441.00 175.00 2.50 4.13 a 2656.13
1940 0.00 a 0.00 39.50 116.50 351.50 517.00 590.50 655.00 453.50 239.00 0.00 0.00 2962.50
1941 0.00 0.00 78.50 160.00 257.50 392.00 683.00 550.50 317.00 144.50 48.00 1.00 2632.00
1942 0.00 a 0.00 21.00 126.50 204.00 308.00 641.00 621.50 458.50 243.50 4.00 0.00 2628.00
1943 0.00 0.00 9.50 128.00 157.50 295.00 537.00 490.50 501.50 200.00 2.00 2.00 2323.00
1944 0.00 4.00 7.00 73.00 203.50 302.50 548.50 521.00 434.00 271.00 6.50 2.00 2373.00
1945 4.50 1.50 0.00 48.50 246.00 340.50 576.00 545.00 307.50 173.00 8.00 0.00 2250.50
1946 0.00 0.00 5.00 60.50 261.00 291.00 543.50 543.50 351.50 55.50 0.00 12.00 2123.50
1947 0.00 1.50 42.50 110.00 325.00 298.00 490.00 463.50 398.00 117.50 3.00 0.00 2249.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 460.00 466.50 340.00 121.50 0.00 0.00 1388.00
1949 0.00 a 0.00 0.00 109.50 275.00 334.50 469.00 502.00 413.50 41.00 40.50 3.50 2188.50
1950 0.00 0.00 4.00 22.00 156.00 348.00 494.50 587.00 387.50 82.50 11.00 1.50 2094.00
1951 0.00 1.00 0.00 126.00 187.00 360.50 570.50 478.50 439.00 140.00 1.50 0.00 2304.00
1952 0.00 0.00 1.03 a 108.00 233.00 286.50 578.00 555.50 464.00 337.50 0.50 0.00 2564.03
1953 12.00 6.50 10.50 62.00 136.50 253.50 546.00 517.00 419.50 168.00 33.00 2.50 2167.00
1954 0.00 0.50 0.00 46.50 227.00 257.00 393.50 428.50 361.00 101.50 30.50 0.50 1846.50
1955 0.00 0.00 0.00 18.00 124.00 328.00 372.50 493.50 344.00 135.50 19.00 0.50 1835.00
1956 0.00 0.00 5.50 103.39 b 297.00 288.50 582.00 499.00 371.50 118.00 0.00 11.00 2275.89
1957 0.00 0.00 2.00 72.50 284.00 381.00 489.50 466.00 512.00 93.50 0.00 0.00 2300.50
1958 0.50 14.00 4.00 49.50 352.00 466.00 671.00 648.50 393.50 195.50 22.50 3.50 2820.50
1959 0.00 0.00 2.00 76.00 155.50 369.00 563.50 495.50 294.00 129.00 16.00 0.50 2101.00
1960 0.00 0.00 34.00 83.50 145.24 d 374.50 600.50 468.50 357.00 162.50 8.50 0.00 2234.24
1961 6.50 3.50 6.00 64.00 184.50 480.00 610.00 658.50 309.50 125.50 0.00 a 0.00 2448.00
1962 3.00 0.00 a 6.00 108.00 80.50 354.00 502.00 503.50 413.00 145.00 17.50 0.00 2132.50
1963 0.00 0.50 9.00 23.50 241.50 317.50 412.00 525.50 513.00 193.50 0.00 0.00 2236.00
1964 0.00 0.00 17.50 35.00 155.50 294.00 498.00 449.50 313.50 184.00 1.50 2.50 1951.00
1965 3.00 0.00 18.00 96.50 151.50 302.50 580.50 331.50 k 300.00 229.50 41.38 a 0.00 1722.88
1966 0.00 g 0.00 18.00 83.00 184.50 349.14 a 475.00 530.00 418.50 133.50 21.00 0.00 2212.64
1967 2.50 0.00 1.50 23.00 215.00 453.50 623.00 720.50 533.00 170.50 14.00 2.50 2759.00
1968 0.00 25.50 35.00 56.00 209.50 355.50 554.50 446.00 375.50 86.00 12.00 0.00 2155.50
1969 0.00 0.00 24.50 60.00 281.50 462.00 489.50 453.00 382.00 88.50 37.00 0.00 2278.00
1970 0.00 0.00 0.00 10.50 202.00 436.50 541.50 531.50 288.50 111.50 14.50 0.00 2136.50
1971 1.50 4.00 0.50 37.50 207.00 240.50 519.50 597.50 306.50 119.50 0.50 0.00 2034.50
1972 3.50 11.50 35.50 19.00 257.50 328.50 568.00 598.50 277.00 124.50 3.00 2.00 2228.50
1973 0.00 0.00 3.00 69.00 241.50 358.00 539.50 455.00 377.50 123.00 2.50 0.50 2169.50
1974 1.50 0.00 7.50 36.50 134.50 383.00 475.50 533.00 484.50 189.50 4.00 3.00 2252.50
1975 4.00 0.00 0.00 8.00 198.50 321.00 533.50 438.50 498.00 140.00 32.00 15.50 2189.00
1976 1.00 0.00 4.00 44.00 214.50 268.00 507.00 438.50 425.00 168.00 52.50 0.00 2122.50
1977 0.00 6.50 0.50 132.50 102.00 420.00 510.00 672.00 296.50 152.50 21.00 15.50 2329.00
1978 0.00 0.00 51.00 49.50 160.00 448.50 555.50 530.50 320.00 223.00 8.00 0.00 2346.00
1979 0.00 0.00 33.00 81.00 269.00 408.00 575.00 525.50 468.00 225.50 3.00 2.50 2590.50
1980 0.00 e 0.00 0.00 131.00 209.00 281.50 550.00 472.50 379.00 188.87 d 36.00 14.50 2262.37
1981 0.50 7.26 a 29.50 85.50 206.00 311.00 490.83 a 645.00 397.50 107.50 20.00 1.50 2302.09
1982 2.00 11.00 10.50 46.50 204.50 441.00 501.00 541.00 373.00 131.00 5.00 3.00 2269.50
1983 2.00 2.50 15.00 99.50 289.50 329.50 463.00 540.50 313.50 139.50 24.00 0.00 2218.50
1984 3.00 0.00 19.00 33.50 142.00 291.00 551.00 555.50 330.00 109.00 4.00 0.00 2038.00
1985 0.00 0.00 8.00 124.00 245.50 408.50 700.50 528.50 288.50 128.00 22.50 0.00 2454.00
1986 0.00 18.67 a 54.50 60.50 230.00 475.50 458.50 678.00 317.00 238.50 33.00 0.00 2564.17
1987 0.00 1.00 10.00 167.50 306.00 451.00 520.00 585.50 485.17 a 306.50 52.50 0.00 2885.17
1988 0.00 8.50 21.00 101.50 219.50 380.50 575.50 578.00 439.50 321.00 33.50 2.50 2681.00
1989 0.50 0.00 0.00 160.50 234.50 450.00 488.50 516.50 489.50 186.50 47.50 4.50 2578.50
1990 6.50 1.00 35.50 143.00 205.00 382.50 639.50 637.00 508.50 115.00 44.00 0.00 2717.50
1991 0.00 5.00 5.00 55.50 131.00 270.50 605.00 610.00 517.00 270.50 17.00 1.00 2487.50
1992 5.00 5.50 77.50 141.00 397.50 529.00 636.00 633.50 404.00 217.00 9.00 0.00 3055.00
1993 0.00 0.00 3.00 37.50 315.50 337.00 413.50 540.00 490.00 286.50 2.00 0.50 2425.50
1994 0.00 0.00 50.00 117.00 289.50 345.50 623.00 613.50 494.50 178.00 1.00 2.00 2714.00
1995 1.50 8.00 19.00 71.50 309.00 361.50 598.50 496.50 495.00 153.50 64.00 3.00 2581.00
1996 0.00 2.50 8.00 99.50 141.57 a 340.00 630.50 539.50 316.50 174.00 9.50 0.00 2261.57
1997 0.00 a 0.00 0.00 z 53.00 339.00 366.00 585.50 641.50 472.50 128.50 29.00 0.00 2615.00
1998 0.00 0.00 45.00 87.50 185.00 376.50 603.50 568.00 493.00 159.00 13.00 4.50 2535.00
1999 0.50 1.00 19.00 74.00 163.00 322.50 503.50 585.50 435.00 196.50 41.00 8.00 2349.50
2000 0.00 0.00 a 3.00 138.00 230.43 a 438.62 a 522.50 546.00 414.00 162.00 6.72 a 0.00 2461.28
2001 0.00 a 0.00 29.85 d 65.00 263.50 318.50 497.00 577.50 454.50 156.00 36.00 0.00 2397.85
2002 0.00 7.50 4.00 68.00 199.50 414.83 a 606.50 552.50 428.00 173.50 20.50 0.00 2474.83
2003 7.00 0.00 27.50 71.50 217.50 470.00 634.00 607.50 481.00 245.00 8.50 0.00 2769.50
2004 0.00 0.00 72.00 168.00 258.50 442.50 667.00 630.50 357.50 189.50 22.00 3.50 2811.00
2005 0.00 2.50 51.50 76.50 307.50 344.50 619.00 624.50 342.50 192.00 4.00 0.00 2564.50
2006 2.50 0.00 12.50 105.50 284.00 468.00 629.50 558.50 424.00 154.50 37.50 2.00 2678.50
2007 0.00 4.00 49.50 84.00 256.00 395.00 670.00 550.50 358.50 73.50 10.00 2.00 2453.00
2008 0.00 2.00 6.50 25.50 215.00 186.50 j 554.50 571.00 403.00 113.00 24.50 2.50 1917.50
2009 3.00 0.00 0.00 60.50 228.00 412.00 616.90 a 577.50 467.50 95.00 4.50 0.00 2464.90
2010 0.00 0.00 13.00 59.00 125.00 275.50 523.50 556.00 379.50 185.50 43.00 0.00 2160.00
2011 6.00 0.00 3.50 25.50 92.00 306.00 459.50 563.00 465.50 154.50 0.00 4.00 2079.50
2012 0.00 0.50 1.00 93.00 187.50 277.00 499.00 620.50 437.00 177.00 38.00 1.50 2332.00
2013 0.00 0.00 33.50 20.00 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 33.50
Period of Record Statistics
MEAN 1.14 2.25 18.11 80.57 221.83 362.43 551.56 551.45 405.79 165.42 17.48 2.10 2377.32
S.D. 2.23 4.57 20.16 41.57 66.58 68.95 71.35 66.44 71.34 60.09 16.54 3.59 260.72
SKEW 2.53 2.92 1.28 0.31 0.18 0.41 -0.14 0.20 -0.06 0.66 0.78 2.48 0.40
MAX 12.00 25.50 78.50 168.00 397.50 529.00 700.50 720.50 533.00 337.50 64.00 15.50 3055.00
MIN 0.00 0.00 0.00 8.00 80.50 240.50 372.50 428.50 277.00 41.00 0.00 0.00 1835.00
NO YRS 73 75 74 74 73 72 75 74 75 75 75 76 68