PORTLAND WSFO, OREGON

Monthly Total Growing Degree Days

(356751)

Base Temperature = 40 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
1941 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 254.50 119.50 374.00
1942 35.00 85.00 197.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 146.50 110.00 573.50
1943 9.50 107.50 174.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 182.50 65.00 538.50
1944 37.00 80.50 170.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 164.50 48.50 500.50
1945 119.00 128.50 165.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 162.50 85.00 660.50
1946 83.50 88.50 203.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 103.50 126.00 604.50
1947 51.50 149.50 292.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 212.00 96.00 801.50
1948 46.00 76.00 147.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 654.50 410.75 a 115.50 34.00 1483.75
1949 0.00 67.50 175.00 372.00 593.50 652.00 802.00 820.50 694.00 264.50 295.50 82.00 4818.50
1950 3.50 85.50 164.50 256.50 449.50 653.00 832.50 892.00 653.50 383.50 202.50 198.00 4774.50
1951 68.50 99.00 110.00 403.50 518.00 734.00 838.50 795.50 694.00 423.50 179.50 33.00 4897.00
1952 23.50 74.00 167.00 371.50 542.00 607.50 866.50 863.50 744.00 578.00 99.00 70.50 5007.00
1953 232.00 109.50 186.00 296.50 446.50 558.00 812.50 792.00 674.00 443.00 258.00 117.00 4925.00
1954 53.50 87.50 131.50 286.00 518.00 537.50 714.00 723.00 605.00 404.50 296.00 71.00 4427.50
1955 39.50 45.50 80.50 194.00 400.00 621.00 726.50 789.00 611.00 420.50 155.00 67.50 4150.00
1956 75.50 17.50 154.00 379.50 590.50 571.00 868.00 787.50 624.50 363.00 114.50 111.50 4657.00
1957 8.27 a 88.00 190.00 355.00 584.00 661.00 791.50 759.50 758.00 397.50 127.00 133.00 4852.77
1958 130.00 242.00 174.50 325.00 674.50 756.50 947.50 939.00 669.00 470.50 197.50 123.00 5649.00
1959 99.50 82.50 209.50 367.50 487.50 682.50 887.50 788.50 608.50 440.50 124.50 48.00 4826.50
1960 26.00 98.50 199.50 319.00 432.00 691.00 900.50 787.50 645.00 449.00 201.00 37.50 4786.50
1961 149.00 207.85 b 239.00 303.00 512.50 759.50 909.00 939.00 585.00 412.00 102.00 96.00 5213.85
1962 73.00 120.00 168.50 376.50 430.00 648.00 817.00 803.50 698.50 469.50 233.50 113.00 4951.00
1963 27.50 222.00 162.00 256.50 513.00 598.00 714.00 810.50 753.00 440.00 192.00 19.50 4708.00
1964 55.50 34.50 123.00 202.50 389.50 561.00 759.00 734.50 553.00 409.50 71.00 56.00 3949.00
1965 55.50 107.00 236.00 353.50 442.00 654.50 919.50 884.50 613.00 539.50 292.00 82.50 5179.50
1966 67.50 92.50 224.50 317.50 526.00 670.50 817.50 852.50 733.00 423.00 214.50 138.00 5077.00
1967 121.00 103.50 125.00 207.00 527.50 776.50 907.50 1020.00 792.00 459.00 187.50 92.50 5319.00
1968 66.00 239.00 252.50 240.50 506.00 665.50 886.50 798.50 644.50 373.00 198.00 42.00 4912.00
1969 5.00 31.00 206.50 301.00 602.00 795.00 824.50 807.00 702.00 410.50 223.50 111.00 5019.00
1970 90.50 169.50 216.50 249.50 527.00 776.00 903.50 873.00 621.00 402.00 236.00 59.50 5124.00
1971 103.00 106.50 131.00 287.50 518.50 606.00 904.00 979.50 624.50 388.50 166.00 54.00 4869.00
1972 83.00 165.00 301.50 240.50 623.50 719.50 956.50 983.00 633.50 403.50 250.00 130.00 5489.50
1973 69.00 142.50 243.50 366.50 600.50 717.00 937.50 803.50 732.00 443.00 129.00 153.00 5337.00
1974 127.50 96.50 235.00 339.00 486.50 730.00 838.00 895.00 819.00 469.50 243.00 157.50 5436.50
1975 94.00 79.50 153.00 220.00 541.00 655.50 899.00 784.50 770.50 417.50 193.00 121.00 4928.50
1976 105.50 86.00 147.50 306.50 514.00 610.50 841.50 790.50 725.50 453.00 232.00 40.50 4853.00
1977 33.50 134.00 169.50 385.50 426.50 717.50 815.00 981.50 621.50 427.00 151.50 110.50 4973.50
1978 60.00 143.50 285.50 313.00 453.50 753.00 879.00 853.50 627.00 455.50 85.00 31.00 4939.50
1979 0.00 118.50 332.50 390.50 622.50 750.50 944.50 887.50 788.50 560.50 157.50 150.00 5703.00
1980 18.50 99.50 193.50 415.00 537.50 619.50 894.50 817.00 712.50 497.00 255.50 157.00 5217.00
1981 124.00 143.00 273.00 374.00 541.50 652.00 851.50 995.50 746.00 412.00 266.50 105.00 5484.00
1982 86.50 140.00 262.50 269.50 544.50 777.50 850.00 885.50 695.00 460.50 147.50 102.50 5221.50
1983 160.00 204.50 332.00 381.00 632.50 682.50 821.50 901.50 646.00 441.50 281.00 63.00 5547.00
1984 132.50 170.50 343.50 311.00 508.50 664.00 900.50 911.00 710.00 397.50 201.00 31.00 5281.00
1985 5.00 84.00 179.50 415.50 565.50 730.50 1057.50 906.00 623.00 395.00 92.00 7.50 5061.00
1986 87.50 138.00 348.50 306.00 545.50 789.00 783.50 1001.00 645.00 526.00 234.50 51.50 5456.00
1987 60.50 146.50 270.00 425.00 631.50 794.50 841.50 946.00 764.00 564.50 266.50 79.50 5790.00
1988 42.00 163.00 223.00 364.50 507.50 672.00 880.50 866.00 719.50 568.00 226.00 84.00 5316.00
1989 99.00 37.50 202.50 479.50 556.50 727.00 789.00 807.00 757.50 460.00 256.50 72.50 5244.50
1990 117.00 113.50 290.00 435.50 519.00 706.50 965.50 956.00 810.50 428.50 251.00 51.00 5644.00
1991 57.50 246.50 191.50 322.50 455.50 596.00 925.00 931.00 820.50 477.00 230.50 104.50 5358.00
1992 151.00 234.50 380.50 462.00 716.00 820.50 935.50 923.50 667.00 492.00 189.50 40.50 6012.50
1993 40.50 68.00 251.50 376.50 653.50 675.00 753.50 883.00 768.50 538.50 88.50 110.00 5207.00
1994 153.50 65.50 316.50 425.50 640.50 687.50 962.50 935.00 827.50 438.00 97.50 110.50 5660.00
1995 124.50 214.50 258.50 337.50 642.50 711.50 947.50 845.50 812.50 450.50 350.00 108.00 5803.00
1996 86.50 136.50 236.50 404.00 472.00 708.50 992.50 940.00 654.00 432.00 178.50 85.50 5326.50
1997 84.00 101.00 207.00 330.50 687.50 680.00 895.00 977.00 776.50 424.50 293.50 58.50 5515.00
1998 139.50 170.00 270.50 382.50 503.00 700.50 959.50 960.50 807.00 444.00 268.00 119.00 5724.00
1999 106.00 108.50 180.00 319.50 462.00 635.00 841.00 899.00 737.00 468.50 303.50 136.00 5196.00
2000 42.00 110.00 174.50 420.50 543.00 768.62 a 862.00 860.50 717.00 472.75 a 110.00 41.50 5122.37
2001 57.00 72.50 248.50 288.50 571.36 b 631.00 821.50 905.50 745.34 a 419.50 239.50 72.50 5072.71
2002 72.00 125.00 159.00 367.50 486.00 739.00 924.00 907.50 740.50 438.00 227.50 110.00 5296.00
2003 151.50 121.50 282.10 a 324.00 536.00 782.00 979.00 931.50 801.50 564.50 172.00 100.00 5745.60
2004 52.00 152.00 348.00 489.50 623.00 764.00 977.00 975.50 683.00 504.50 185.50 114.50 5868.50
2005 114.50 104.00 309.00 368.00 624.00 659.00 938.50 952.00 674.00 504.50 132.00 80.50 5460.00
2006 170.00 100.50 196.50 393.00 612.50 789.00 960.00 905.00 753.00 434.50 242.00 60.00 5616.00
2007 48.00 132.50 313.50 350.00 576.00 685.50 952.00 876.50 672.50 406.50 166.50 73.00 5252.50
2008 38.50 149.50 169.00 255.00 585.00 654.50 892.50 917.50 757.00 420.00 277.50 60.00 5176.00
2009 68.50 59.00 168.50 368.50 623.50 771.50 1040.50 927.00 784.00 454.50 231.50 32.50 5529.50
2010 157.00 185.00 255.50 328.50 466.00 613.00 852.00 872.50 733.00 467.50 197.50 109.50 5237.00
2011 114.00 60.50 190.50 237.50 436.50 650.00 826.50 925.50 822.00 480.50 153.50 46.00 4943.00
2012 78.00 102.50 166.50 390.00 557.50 636.50 868.00 964.00 781.50 499.50 269.50 110.00 5423.50
2013 49.50 135.50 280.00 17.50 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 465.00
Period of Record Statistics
MEAN 77.99 119.53 218.27 339.06 540.01 688.47 878.15 881.66 708.24 449.03 197.65 86.40 5196.25
S.D. 48.11 52.06 65.63 67.64 74.14 67.45 73.87 72.16 69.73 55.31 63.84 38.67 393.64
SKEW 0.53 0.64 0.44 -0.14 0.14 -0.08 -0.08 -0.20 -0.08 0.17 -0.06 0.25 -0.53
MAX 232.00 246.50 380.50 489.50 716.00 820.50 1057.50 1020.00 827.50 578.00 350.00 198.00 6012.50
MIN 0.00 17.50 80.50 194.00 389.50 537.50 714.00 723.00 553.00 264.50 71.00 7.50 3949.00
NO YRS 72 72 72 64 64 64 64 64 65 65 72 72 64