COULEE DAM 1 SW, WASHINGTON

Monthly Total Growing Degree Days

(451767)

Base Temperature = 50 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1934 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 649.50 h 386.00 163.27 a 4.82 b 0.00 o 554.09
1935 0.00 d 0.00 0.00 l 0.00 z 0.00 z 365.00 j 781.64 c 748.00 582.93 a 172.00 0.00 a 0.00 a 2284.57
1936 0.00 0.00 b 0.00 b 228.75 b 488.77 a 542.68 b 807.50 473.00 l 460.56 c 232.00 0.00 0.00 2760.25
1937 0.00 a 0.00 3.50 73.50 369.00 513.00 849.92 a 653.77 c 517.76 a 205.24 b 3.00 e 0.00 m 3188.68
1938 0.00 a 0.00 a 0.52 a 138.62 a 366.32 a 649.50 925.19 b 705.54 d 645.52 a 176.70 a 0.52 a 0.00 d 3608.42
1939 0.00 0.00 45.47 a 169.82 b 415.50 463.45 a 825.12 a 848.37 a 535.18 b 153.97 a 0.00 a 2.00 3458.86
1940 0.00 0.00 39.27 a 124.00 443.50 638.50 789.50 768.28 a 576.50 212.50 1.00 0.00 3593.05
1941 0.00 a 0.00 46.50 208.50 329.50 498.00 828.50 683.00 314.00 103.33 a 3.62 a 4.00 3018.95
1942 0.00 0.00 9.50 115.50 207.00 357.00 577.63 a 752.78 a 493.97 a 142.00 0.00 a 0.00 2655.38
1943 0.00 0.00 z 2.00 108.00 155.50 345.50 704.00 613.50 484.50 163.00 0.00 0.00 2576.00
1944 0.00 0.00 7.50 98.50 344.50 532.00 767.00 659.00 456.00 176.50 0.00 0.00 3041.00
1945 0.00 0.00 2.00 51.00 313.50 468.50 766.00 736.50 315.00 186.52 a 2.00 0.00 a 2841.02
1946 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 0.00 z 0.00 z 0.00
1947 0.00 0.00 14.00 100.50 420.50 411.00 662.00 585.50 374.50 78.00 0.00 0.00 2646.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 547.50 534.00 519.77 a 329.50 53.50 0.00 0.00 1984.27
1949 0.00 0.00 0.00 91.03 a 384.00 434.50 646.50 633.50 432.93 a 22.00 1.50 0.00 2645.97
1950 0.00 0.00 0.00 16.00 f 174.50 386.00 699.50 0.00 z 673.50 35.50 0.00 0.00 1969.00
1951 0.00 0.00 0.00 49.00 245.00 431.00 662.50 631.37 a 385.00 97.50 0.00 0.00 2501.37
1952 0.00 0.00 1.00 112.50 302.00 453.50 708.00 679.93 a 492.50 207.50 0.00 0.00 2956.93
1953 0.00 0.00 0.50 48.50 182.50 274.50 645.00 612.00 414.00 119.50 3.00 0.00 2299.50
1954 0.00 0.00 0.00 19.50 276.00 320.50 589.50 507.50 332.50 45.00 1.00 0.00 2091.50
1955 0.00 0.00 0.00 9.50 107.50 474.50 579.50 637.00 380.00 60.50 0.00 0.00 2248.50
1956 0.00 0.00 0.00 113.50 340.00 350.50 747.50 639.00 393.00 79.50 0.00 0.00 a 2663.00
1957 0.00 0.00 0.00 57.00 355.00 459.00 604.00 536.00 486.50 53.00 0.00 0.00 a 2550.50
1958 0.00 0.00 0.00 17.00 471.50 592.00 804.50 806.50 340.00 119.00 0.50 0.00 3151.00
1959 0.00 0.00 0.00 57.50 127.50 408.50 698.00 523.50 261.50 32.00 0.50 0.00 2109.00
1960 0.00 0.00 15.00 58.50 135.50 444.00 824.00 551.00 391.00 107.50 0.00 0.00 2526.50
1961 0.00 0.00 3.50 44.50 228.00 588.00 771.00 813.00 301.50 73.50 0.00 0.00 2823.00
1962 0.00 0.00 0.00 102.00 143.50 419.50 675.00 566.50 423.00 49.00 0.50 0.00 2379.00
1963 0.00 0.00 4.50 42.50 272.50 459.50 607.00 687.00 541.00 181.50 0.00 0.00 2795.50
1964 0.00 0.00 2.00 13.50 221.00 438.00 667.00 530.50 294.50 81.00 0.50 0.00 2248.00
1965 0.00 0.00 0.00 76.00 215.50 461.50 701.00 666.00 281.50 134.00 5.00 0.00 2540.50
1966 0.00 0.00 15.00 61.50 299.50 368.50 614.50 660.00 482.50 83.50 0.00 0.00 2585.00
1967 0.00 0.00 0.00 0.00 204.00 528.50 726.00 836.50 562.50 88.00 0.00 0.00 2945.50
1968 0.00 0.00 4.00 54.50 290.00 491.00 799.50 558.00 409.00 31.50 0.00 0.00 2637.50
1969 0.00 0.00 7.00 46.00 371.00 626.50 666.00 654.50 396.50 29.45 a 0.00 0.00 2796.95
1970 0.00 0.00 0.00 2.50 261.50 617.50 758.00 700.50 218.50 85.50 0.00 0.00 2644.00
1971 0.00 0.00 0.00 46.00 309.50 333.50 710.00 845.50 259.50 111.00 0.00 0.00 2615.00
1972 0.00 0.50 9.50 20.00 304.00 450.50 623.50 730.00 269.00 83.00 0.00 0.00 2490.00
1973 0.00 0.00 0.00 79.00 297.00 459.50 736.00 684.50 380.00 52.00 0.00 0.00 2688.00
1974 0.00 0.00 5.00 66.00 158.50 558.50 633.50 696.00 473.00 88.50 0.00 0.00 c 2679.00
1975 0.00 0.00 0.00 20.00 215.00 400.00 809.50 542.50 412.00 86.00 17.50 0.00 2502.50
1976 0.00 0.00 1.00 42.50 220.50 350.50 622.50 509.50 477.00 100.50 0.00 0.00 2324.00
1977 0.00 0.00 3.50 173.00 169.00 565.86 a 644.00 789.50 277.50 40.50 0.00 0.00 2662.86
1978 0.00 0.00 15.00 57.50 209.52 b 533.28 a 696.98 a 611.50 299.46 b 98.00 0.00 0.00 h 2521.24
1979 0.00 0.00 1.00 67.00 310.50 557.00 784.00 734.50 501.00 185.45 c 0.00 0.00 a 3140.45
1980 0.00 0.00 a 0.00 155.00 268.31 b 375.00 691.00 576.50 387.50 137.43 a 8.50 3.21 b 2602.45
1981 0.00 0.50 1.50 91.55 a 228.00 337.50 620.00 795.50 382.50 47.00 0.00 0.00 2504.05
1982 0.00 0.00 0.00 25.00 241.50 574.50 639.00 680.00 388.50 79.50 0.00 0.00 2628.00
1983 0.00 0.00 1.00 46.50 325.00 320.00 i 529.00 713.00 328.50 55.50 4.00 0.00 2002.50
1984 0.00 0.00 0.00 32.50 128.00 381.00 699.50 703.00 304.50 114.00 0.00 0.00 2362.50
1985 0.00 0.00 0.00 92.00 364.00 525.00 960.50 648.50 243.00 68.50 3.00 0.00 2904.50
1986 0.00 0.00 13.50 44.00 307.50 654.00 601.50 832.00 186.00 90.00 0.00 0.00 2728.50
1987 0.00 0.00 9.00 162.50 373.00 580.50 0.00 z 0.00 z 552.41 a 140.00 1.50 0.00 1818.91
1988 0.00 0.00 1.00 152.00 269.50 464.50 728.50 725.50 426.72 a 245.50 3.50 0.00 3016.72
1989 0.00 0.00 0.00 116.50 227.00 555.50 710.50 614.00 448.50 106.50 18.50 0.00 2797.00
1990 0.00 0.00 12.50 133.50 206.50 420.50 797.50 730.50 571.00 56.00 14.50 0.00 2942.50
1991 0.00 0.00 3.00 68.00 217.50 344.50 715.00 751.00 524.00 161.00 0.00 0.00 2784.00
1992 0.00 0.00 19.50 127.00 393.50 668.00 664.00 716.50 356.00 140.50 0.00 0.00 3085.00
1993 0.00 0.00 2.00 17.00 0.00 z 426.00 463.50 585.50 419.50 156.00 0.00 0.00 2069.50
1994 0.00 0.00 22.00 138.00 324.00 441.50 841.50 729.00 526.00 93.50 0.00 0.00 3115.50
1995 0.00 2.50 1.00 60.00 344.50 448.00 713.50 547.50 480.00 62.00 0.00 0.00 2659.00
1996 0.00 0.00 a 0.00 68.00 141.00 429.50 779.00 710.00 307.00 113.00 0.00 0.00 2547.50
1997 0.00 0.00 0.00 31.00 303.00 395.50 644.50 749.50 418.50 58.00 0.50 0.00 2600.50
1998 0.00 z 0.00 3.50 86.50 314.00 0.00 z 862.50 791.00 561.50 82.50 2.00 0.00 2703.50
1999 0.00 0.00 8.78 a 51.00 188.00 402.50 617.00 752.78 a 378.50 71.50 11.50 0.00 2481.57
2000 0.00 0.00 b 0.00 114.50 219.00 0.00 z 646.35 a 665.50 352.24 a 62.52 a 0.00 a 0.00 b 2060.11
2001 0.00 0.00 1.50 64.50 299.50 305.17 a 656.50 696.47 a 430.00 24.28 a 5.50 0.00 2483.42
2002 0.00 1.00 0.00 37.50 174.00 479.50 744.00 588.00 358.00 54.00 0.00 0.00 2436.00
2003 0.00 0.00 12.00 77.50 249.00 579.00 842.50 711.00 511.50 233.50 1.00 0.00 z 3217.00
2004 0.00 z 0.00 z 0.00 z 132.69 d 258.50 547.00 818.00 774.50 356.00 142.50 0.00 0.00 3029.19
2005 0.00 0.00 10.00 103.00 334.50 474.00 0.00 z 759.00 395.00 143.50 0.00 z 0.00 2219.00
2006 0.00 0.00 0.00 69.50 239.00 449.50 811.50 679.00 434.50 77.50 9.00 0.00 2769.50
2007 0.00 0.00 18.50 49.50 274.00 0.00 z 846.50 678.50 391.50 53.50 0.00 1.00 2313.00
2008 0.00 0.00 0.00 28.50 314.00 405.50 732.50 682.50 391.50 86.50 0.00 0.00 2641.00
2009 0.00 0.00 0.00 42.50 263.50 524.50 781.50 723.00 490.00 25.50 0.00 0.00 2850.50
2010 0.00 0.00 0.00 76.50 139.50 365.00 689.00 629.00 356.50 115.50 1.50 0.00 2372.50
2011 0.00 0.00 5.00 3.00 138.00 365.00 558.50 713.50 501.72 a 66.50 0.00 0.00 2351.22
2012 0.00 0.00 0.50 93.00 224.50 362.50 743.50 753.00 463.45 a 117.28 a 6.00 0.00 2763.73
2013 0.00 0.00 2.50 4.50 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 2.50
Period of Record Statistics
MEAN 0.00 0.06 5.41 76.41 269.53 465.03 712.26 679.08 414.56 104.61 1.76 0.14 2697.22
S.D. 0.00 0.32 9.62 49.05 87.28 93.32 95.50 87.23 100.05 55.34 3.82 0.64 314.49
SKEW 0.00 6.57 2.76 0.81 0.25 0.27 0.03 -0.17 0.16 0.66 2.91 4.92 0.78
MAX 0.00 2.50 46.50 228.75 488.77 668.00 960.50 848.37 673.50 245.50 18.50 4.00 3608.42
MIN 0.00 0.00 0.00 0.00 107.50 274.50 463.50 507.50 186.00 22.00 0.00 0.00 2091.50
NO YRS 75 75 75 74 74 72 75 74 78 78 77 74 61