N WILLAMETTE EXP STN, OREGON

Monthly Total Growing Degree Days

(356151)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200708
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
1963 20.15 a 217.50 146.00 0.00 z 495.50 585.50 690.50 771.50 730.50 416.00 196.55 a 54.77 a 4324.47
1964 64.50 47.50 120.50 226.50 384.50 568.00 759.50 701.00 531.96 b 414.50 96.50 98.00 4012.96
1965 60.00 75.70 a 224.50 324.50 389.00 565.00 839.00 822.50 600.50 455.50 243.50 71.00 4670.70
1966 52.50 63.50 173.00 351.00 503.00 631.50 745.55 a 778.50 678.00 372.50 226.50 135.50 4711.05
1967 112.50 69.00 119.00 165.00 467.00 706.50 850.50 959.00 740.50 387.50 189.50 96.00 4862.00
1968 76.00 234.50 222.50 220.50 466.00 601.50 807.00 782.50 608.04 b 345.65 a 174.50 37.56 e 4576.24
1969 17.50 31.92 c 196.50 278.00 563.34 b 776.25 b 752.78 a 691.19 d 643.45 a 314.00 188.57 b 104.88 a 4558.39
1970 106.95 a 133.50 164.30 a 186.00 457.00 718.50 842.00 788.50 506.00 316.50 197.50 53.00 4469.75
1971 74.50 69.00 101.27 a 225.00 452.00 510.00 817.00 880.83 b 542.00 297.50 111.00 20.67 a 4100.76
1972 53.50 112.50 228.00 171.00 529.00 628.00 875.50 876.00 552.00 350.50 179.00 100.00 4655.00
1973 57.00 115.00 156.79 e 290.00 519.00 621.00 845.00 701.50 666.00 359.00 122.00 123.00 4575.29
1974 78.61 c 69.00 185.00 274.00 402.00 657.93 a 764.00 827.50 811.00 407.50 184.50 124.50 4785.54
1975 118.00 68.00 115.98 b 173.50 453.00 601.50 840.00 716.00 725.50 379.50 143.79 a 116.50 4451.28
1976 84.00 67.32 a 126.50 257.00 477.50 532.50 771.50 720.50 671.90 a 381.62 b 199.00 18.50 4307.84
1977 32.50 112.50 96.00 342.00 371.50 657.50 770.00 937.00 583.00 402.50 156.67 c 140.53 a 4601.70
1978 84.14 c 168.00 270.00 293.50 426.00 725.56 c 841.98 c 825.50 580.50 436.00 82.00 20.48 c 4753.66
1979 12.00 92.00 250.50 321.50 516.00 680.00 864.50 804.50 709.50 502.00 131.38 a 140.00 5023.88
1980 40.00 108.50 156.00 350.50 455.50 552.00 824.00 733.00 647.00 440.50 209.50 114.00 4630.50
1981 75.50 125.00 227.00 330.00 c 481.00 600.50 810.13 a 905.00 659.00 374.50 225.52 a 101.50 4914.65
1982 55.50 97.00 172.00 206.50 504.50 718.00 788.00 824.50 667.50 401.00 115.50 79.00 4629.00
1983 131.50 185.50 294.00 330.00 575.00 615.00 762.00 837.50 596.00 376.00 238.45 a 44.00 4984.95
1984 144.00 129.50 291.50 261.50 426.50 583.50 806.50 824.00 644.00 321.50 151.00 16.00 4599.50
1985 3.00 57.00 112.50 368.00 501.00 666.00 942.50 802.00 559.50 363.50 94.66 a 12.50 4482.16
1986 103.50 142.50 341.00 284.00 498.00 764.00 729.50 938.50 571.00 448.50 217.50 46.50 5084.50
1987 70.50 143.50 233.00 405.00 606.50 733.50 803.50 857.50 713.50 518.50 221.00 80.50 5386.50
1988 42.50 139.50 207.00 354.00 453.00 634.00 839.50 803.50 663.50 532.50 203.50 63.00 4935.50
1989 83.00 39.50 181.50 449.00 512.00 727.00 752.00 753.00 740.00 399.00 206.50 65.00 4907.50
1990 109.50 111.00 272.00 386.00 464.50 653.50 910.00 876.00 767.50 347.00 193.50 40.50 5131.00
1991 81.00 227.50 148.00 277.50 399.50 0.00 z 865.00 876.00 748.50 444.00 213.50 79.50 4360.00
1992 133.50 229.00 349.50 412.50 649.00 780.00 894.50 895.00 623.50 455.50 169.00 28.50 5619.50
1993 39.00 69.00 269.00 321.50 604.00 622.50 708.00 852.00 703.00 503.50 48.50 82.00 4822.00
1994 133.00 61.50 291.00 356.00 576.00 611.00 889.00 840.00 736.50 364.50 49.00 119.50 5027.00
1995 155.50 207.93 a 239.50 284.50 579.00 677.00 884.50 773.50 762.50 403.00 327.50 117.50 5411.93
1996 98.50 138.50 236.50 349.66 a 423.50 644.00 940.00 868.00 590.00 393.50 152.50 86.00 4920.66
1997 95.00 101.50 200.00 285.50 652.50 626.00 834.00 928.00 734.50 387.50 264.00 45.00 5153.50
1998 159.50 167.50 237.50 327.00 485.50 679.50 929.00 890.50 760.50 416.00 229.50 0.00 h 5282.00
1999 130.50 f 114.50 168.50 312.00 415.50 588.00 795.00 846.00 698.50 435.00 282.50 124.50 4780.00
2000 57.50 117.00 151.00 372.00 507.50 729.00 827.00 819.50 0.00 z 429.00 109.50 65.50 4184.50
2001 76.00 96.00 237.50 156.50 578.00 587.00 813.00 860.50 729.00 393.50 0.00 z 0.00 z 4527.00
2002 0.00 z 0.00 z 164.50 370.00 456.00 690.50 890.50 861.50 729.50 0.00 z 243.50 119.00 4525.00
2003 190.00 132.50 262.00 304.50 523.50 770.50 924.50 889.50 741.00 514.50 140.50 77.00 5470.00
2004 75.50 140.50 319.50 428.00 545.00 724.00 948.00 954.50 641.50 469.00 148.50 96.50 5490.50
2005 105.50 107.00 280.00 326.00 589.00 608.00 892.50 916.50 638.00 466.50 120.50 98.00 5147.50
2006 150.50 113.00 171.00 371.00 571.00 733.00 929.50 836.50 726.50 407.50 223.00 71.00 5303.50
2007 55.50 143.50 300.00 324.00 534.50 657.50 930.00 861.00 0.00 z 0.00 z 0.00 z 0.00 z 3806.00
Period of Record Statistics
MEAN 82.98 117.99 209.09 304.58 498.62 653.21 834.18 833.49 666.79 407.98 177.22 79.21 4842.38
S.D. 42.69 52.03 66.95 72.46 70.15 68.63 66.92 69.46 75.31 56.74 60.61 37.36 378.73
SKEW 0.36 0.62 0.19 -0.34 0.26 0.09 -0.08 -0.29 -0.30 0.31 -0.09 -0.17 0.07
MAX 190.00 234.50 349.50 449.00 652.50 780.00 948.00 959.00 811.00 532.50 327.50 140.53 5619.50
MIN 3.00 31.92 96.00 156.50 371.50 510.00 690.50 691.19 506.00 297.50 48.50 12.50 4012.96
NO YRS 43 44 45 44 45 44 45 45 43 43 43 42 37