MC MILLIN RESERVOIR, WASHINGTON

Monthly Total Growing Degree Days

(455224)

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
1941 0.00 z 0.00 z 323.00 388.00 482.00 594.00 879.00 720.00 500.50 373.50 200.00 90.00 4550.00
1942 58.00 48.00 110.50 316.50 420.00 498.50 796.50 819.50 587.00 455.50 105.00 88.35 a 4303.35
1943 15.50 74.50 116.00 339.50 376.00 510.52 a 694.00 532.50 g 611.00 380.78 a 129.50 52.00 3299.30
1944 48.50 40.50 111.00 256.50 403.50 524.00 709.50 676.00 614.00 465.50 138.00 35.50 4022.50
1945 77.50 77.50 98.50 179.50 492.50 513.00 736.00 696.00 485.00 378.50 124.50 80.50 3939.00
1946 52.50 70.50 121.50 234.50 490.00 515.50 713.00 704.00 555.50 256.00 70.00 74.50 3857.50
1947 25.50 117.50 225.50 308.57 b 529.50 564.50 690.50 676.50 569.50 396.50 131.50 82.00 4317.57
1948 35.50 34.00 102.50 185.50 387.00 633.62 a 672.50 672.50 524.00 321.50 76.50 10.50 3655.62
1949 2.50 44.50 162.50 295.50 501.00 524.50 646.00 704.00 600.00 239.50 291.00 46.50 4057.50
1950 13.50 70.50 82.00 196.50 348.50 567.00 690.50 743.50 546.50 309.00 132.00 157.00 3856.50
1951 36.00 68.50 68.50 280.50 417.50 589.50 727.50 652.50 590.00 339.50 122.50 25.00 3917.50
1952 34.00 63.50 78.50 266.00 424.00 480.50 700.50 728.50 593.00 433.00 96.50 61.50 3959.50
1953 147.00 53.50 120.00 224.50 406.50 455.00 674.25 a 707.00 588.50 392.00 193.50 68.00 4029.75
1954 32.00 82.50 67.50 178.50 414.50 450.50 577.00 618.50 542.59 a 284.00 242.00 50.50 3540.09
1955 20.00 14.50 42.00 118.00 327.50 511.00 569.00 599.50 491.00 315.00 88.00 46.00 3141.50
1956 42.50 6.50 79.50 261.50 513.50 489.50 722.00 691.00 525.00 303.00 98.50 76.00 3808.50
1957 4.50 43.50 114.00 278.00 525.00 577.00 622.50 634.00 649.50 315.68 a 75.50 88.00 3927.18
1958 88.00 171.50 107.00 250.50 577.00 683.50 865.50 790.50 575.00 378.50 152.50 134.50 4774.00
1959 90.00 40.50 119.00 267.00 382.50 566.50 742.50 674.50 503.79 a 352.00 121.50 47.00 3906.79
1960 39.50 78.50 133.50 268.00 376.00 543.00 738.50 677.50 503.50 375.50 114.50 48.50 3896.50
1961 107.50 128.00 166.50 220.00 413.00 636.50 762.00 808.00 506.50 304.50 72.50 64.00 4189.00
1962 46.50 123.50 97.50 287.00 321.50 512.50 666.00 698.00 576.00 379.50 165.50 98.50 3972.00
1963 27.00 199.00 109.00 217.50 426.00 526.00 635.00 695.00 651.50 396.50 159.00 54.00 4095.50
1964 45.50 35.00 90.50 162.50 330.50 499.50 669.50 638.50 486.00 333.50 69.50 31.50 3392.00
1965 43.00 60.00 135.00 261.00 334.00 539.00 742.00 734.50 467.50 429.00 205.50 62.50 4013.00
1966 52.50 44.50 142.00 262.00 396.50 527.50 649.50 698.00 600.50 322.50 154.50 129.50 3979.50
1967 61.50 55.50 55.00 137.50 421.50 642.00 739.00 841.50 677.00 384.00 148.00 82.00 4244.50
1968 74.50 133.50 209.00 194.00 422.50 549.00 748.00 657.50 548.00 277.00 119.50 34.00 3966.50
1969 14.00 19.00 127.50 237.00 487.50 682.00 680.00 650.00 559.50 284.50 146.00 58.50 3945.50
1970 49.50 100.50 131.00 163.00 389.00 631.50 717.00 702.00 472.00 257.50 153.50 27.00 3793.50
1971 69.50 64.50 57.50 191.50 416.00 437.00 725.50 806.00 484.00 283.50 116.00 10.50 3661.50
1972 22.00 66.00 166.50 140.00 455.50 531.00 707.00 732.50 450.00 244.00 105.50 90.00 3710.00
1973 50.00 72.50 125.50 221.50 440.50 527.50 694.50 604.00 557.50 312.00 61.00 85.00 3751.50
1974 60.50 40.50 124.00 212.50 337.00 538.50 662.50 732.50 657.00 342.00 158.50 83.50 3949.00
1975 44.00 35.00 59.00 115.50 393.00 516.50 737.50 639.00 563.00 312.00 132.00 90.50 3637.00
1976 56.00 40.00 61.50 212.50 403.00 453.50 679.50 635.00 575.00 322.50 143.50 79.50 3661.50
1977 36.50 126.50 82.00 296.00 335.00 577.50 653.50 840.00 371.00 j 288.00 116.00 69.50 3420.50
1978 62.50 109.00 197.50 239.50 376.50 645.00 717.00 701.00 496.00 359.50 69.00 16.50 3989.00
1979 4.50 58.00 198.00 234.50 449.00 564.00 734.00 693.50 603.50 381.00 73.00 107.50 4100.50
1980 13.00 107.50 103.50 320.00 411.00 498.50 690.50 662.00 535.00 334.50 173.00 128.00 3976.50
1981 75.00 98.50 203.50 234.00 395.50 486.50 656.50 806.00 574.50 258.50 171.50 46.00 4006.00
1982 32.00 68.50 80.50 149.50 377.00 624.50 629.00 693.00 540.50 314.50 52.00 39.00 3600.00
1983 96.00 115.00 198.50 234.50 480.00 519.50 637.50 702.00 468.50 250.00 175.50 15.00 3892.00
1984 113.00 75.50 191.50 200.50 332.50 489.00 695.50 687.00 519.50 243.50 84.50 8.00 3640.00
1985 3.50 28.50 53.00 229.00 404.00 531.00 823.00 696.50 456.00 301.50 63.00 8.00 3597.00
1986 81.50 94.96 e 246.00 207.00 416.00 625.50 611.50 823.00 500.00 365.50 128.00 36.00 4134.96
1987 69.00 111.00 186.00 319.66 a 486.70 a 612.93 a 702.00 724.50 605.50 380.00 206.50 52.00 4455.79
1988 31.50 92.00 135.00 250.50 420.00 527.00 705.00 710.50 537.50 412.00 141.50 66.00 4028.50
1989 41.00 21.00 96.50 321.00 433.00 628.00 667.50 692.50 599.50 316.00 151.50 74.50 4042.00
1990 69.50 44.50 169.00 308.50 413.50 569.50 806.50 786.50 620.00 281.50 153.50 31.00 4253.50
1991 60.50 157.00 70.50 213.00 382.50 487.00 753.00 783.50 581.00 320.00 163.00 80.50 4051.50
1992 92.50 153.50 221.50 340.00 526.00 689.00 743.00 765.00 532.00 364.00 114.50 18.00 4559.00
1993 39.00 61.00 164.50 256.50 557.00 559.00 608.50 725.50 571.50 385.00 44.50 81.50 4053.50
1994 108.00 35.50 190.00 313.50 476.50 527.00 786.00 752.00 627.50 287.00 51.00 104.50 4258.50
1995 96.50 131.50 150.00 254.00 515.00 594.00 785.50 0.00 z 639.00 326.50 242.50 93.50 3828.00
1996 81.00 101.00 152.50 301.50 335.00 539.00 787.50 758.00 479.00 301.00 104.00 35.00 3974.50
1997 111.00 68.00 142.50 229.50 540.50 568.00 720.50 819.50 631.50 309.00 197.00 49.50 4386.50
1998 105.00 128.00 174.50 246.50 410.00 572.00 829.50 780.00 625.00 344.00 169.50 65.00 4449.00
1999 69.50 62.74 a 100.50 212.00 317.75 a 509.50 655.50 598.50 f 535.86 a 301.50 207.00 81.00 3052.85
2000 10.50 77.50 102.50 273.50 409.50 583.50 707.50 692.50 546.00 320.50 67.00 44.00 3834.50
2001 37.50 22.00 136.50 197.59 a 431.00 504.50 676.66 b 731.50 524.50 296.00 178.50 34.50 3770.74
2002 80.50 50.00 68.50 212.50 380.50 606.50 737.50 705.50 555.00 278.00 180.50 76.00 3931.00
2003 140.00 55.50 194.50 224.50 433.00 637.50 805.50 768.00 620.50 434.50 70.50 54.00 4438.00
2004 51.00 92.00 222.00 325.50 484.00 638.00 817.00 813.00 526.00 369.00 107.50 65.00 4510.00
2005 124.50 40.00 235.50 277.00 527.50 544.50 738.00 785.00 497.50 382.50 80.50 103.00 4335.50
2006 110.00 45.00 116.77 a 250.34 a 439.17 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 961.28
Period of Record Statistics
MEAN 57.41 74.59 133.68 242.42 425.39 553.82 711.71 718.62 555.21 334.67 131.52 63.45 3985.67
S.D. 34.73 40.53 56.69 56.74 63.13 59.87 64.28 60.38 55.67 54.14 52.04 32.40 295.47
SKEW 0.52 0.81 0.74 -0.03 0.36 0.38 0.31 0.27 0.08 0.32 0.53 0.41 0.06
MAX 147.00 199.00 323.00 388.00 577.00 689.00 879.00 841.50 677.00 465.50 291.00 157.00 4774.00
MIN 2.50 6.50 42.00 115.50 317.75 437.00 569.00 599.50 450.00 239.50 44.50 8.00 3141.50
NO YRS 65 65 66 66 66 65 65 62 64 65 65 65 60