PORTLAND WSO CITY, OREGON

Monthly Total Growing Degree Days

(356761)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197306
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
1928 55.00 125.00 335.00 342.50 699.50 667.00 899.00 852.50 646.00 456.00 205.00 72.50 5355.00
1929 22.00 44.50 238.00 275.50 574.00 673.00 877.50 902.00 745.00 573.00 148.50 168.50 5241.50
1930 16.00 179.50 319.50 473.50 466.00 666.00 826.50 926.50 710.00 425.50 187.00 64.50 5260.50
1931 159.50 141.00 274.00 465.00 703.50 708.00 934.00 905.00 682.50 490.00 156.00 69.50 5688.00
1932 67.50 118.50 247.00 400.50 546.00 775.00 798.50 869.50 766.00 530.50 280.00 88.00 5487.00
1933 77.50 53.00 218.00 350.00 431.50 669.50 867.50 917.50 589.50 531.50 197.00 213.00 5115.50
1934 216.00 263.50 472.00 592.50 665.00 722.50 836.50 913.50 683.00 538.00 309.00 132.50 6344.00
1935 115.50 174.50 127.50 351.50 553.50 732.00 862.00 881.00 815.50 430.50 103.50 100.50 5247.50
1936 142.50 44.50 177.50 472.50 658.00 755.00 861.00 915.50 704.00 579.00 177.00 148.50 5635.00
1937 0.50 77.50 300.00 301.50 572.00 763.50 881.00 831.00 715.50 597.00 290.00 136.50 5466.00
1938 89.00 109.00 214.00 431.00 602.00 746.00 961.50 813.00 824.50 534.50 153.00 146.50 5624.00
1939 125.50 65.50 290.50 477.50 641.00 638.50 912.00 928.50 762.00 512.50 299.00 215.50 5868.00
1940 110.50 210.50 366.50 459.50 700.50 824.50 897.50 944.50 768.00 579.00 131.00 154.00 6146.00
1941 149.50 249.00 462.50 494.50 589.50 698.00 1018.50 886.00 641.50 506.50 290.50 145.00 6131.00
1942 50.50 119.00 247.50 426.00 538.50 670.50 960.00 934.50 765.00 542.00 191.00 145.50 5590.00
1943 20.50 182.00 223.50 469.50 514.50 640.00 863.00 827.50 836.50 510.50 257.50 90.50 5435.50
1944 79.50 122.00 226.00 377.50 589.50 676.50 883.50 853.00 799.00 623.50 214.00 63.00 5507.00
1945 159.50 153.00 192.50 342.00 619.00 697.50 935.00 894.00 675.50 498.50 205.00 142.00 5513.50
1946 116.50 133.50 234.50 385.00 658.00 655.50 891.00 878.00 692.00 386.00 167.00 158.50 5355.50
1947 66.50 223.00 376.50 476.50 715.50 672.50 854.50 816.00 757.00 508.50 253.50 156.00 5876.00
1948 84.50 105.00 188.50 286.50 532.00 794.50 828.00 795.00 688.50 471.00 156.21 a 51.67 a 4981.37
1949 0.00 a 101.50 252.00 444.31 a 659.00 706.50 844.23 a 861.50 772.00 338.93 a 384.00 105.00 5468.98
1950 14.50 151.50 195.50 322.50 522.00 700.50 874.20 a 954.50 725.00 414.50 234.00 253.50 5362.20
1951 83.00 145.00 139.50 486.00 571.50 792.00 873.00 848.50 784.00 487.00 219.00 48.50 5477.00
1952 44.50 96.50 185.00 429.00 590.00 637.00 923.00 897.50 814.50 683.00 137.00 126.00 5563.00
1953 263.00 148.00 228.50 348.00 506.50 580.50 867.00 866.00 758.50 531.00 322.50 159.00 5578.50
1954 83.50 140.00 178.00 335.50 581.50 576.50 754.50 756.00 665.50 482.00 348.50 98.50 5000.00
1955 65.00 68.00 102.00 224.00 455.00 669.50 742.00 831.50 700.50 486.50 194.50 108.50 4647.00
1956 132.27 a 27.50 194.00 442.00 661.00 621.00 914.50 a 856.50 716.50 422.00 178.50 132.27 a 5298.03
1957 12.50 138.00 244.50 428.00 644.50 715.50 829.50 806.00 a 867.50 471.50 197.50 153.50 5508.50
1958 179.50 292.00 227.50 379.50 750.00 795.50 1011.50 989.00 742.00 594.50 237.00 202.00 6400.00
1959 163.50 101.50 246.00 407.50 520.00 698.50 931.00 841.00 646.00 535.50 214.50 103.50 5408.50
1960 41.33 a 92.00 f 250.50 384.00 482.00 727.50 946.50 810.50 713.50 516.00 248.00 68.50 5188.33
1961 210.50 231.50 262.50 348.00 558.00 813.50 941.00 997.50 648.00 462.50 162.50 143.50 5779.00
1962 90.50 155.00 201.50 406.00 426.50 672.00 843.72 a 834.00 749.00 508.50 304.50 180.50 5371.72
1963 41.00 308.50 246.00 317.00 613.00 666.50 778.50 858.00 836.50 541.00 266.50 111.00 5583.50
1964 137.00 139.50 220.00 300.50 497.00 635.00 0.00 z 827.50 664.50 561.50 158.50 114.50 4255.50
1965 92.00 156.00 334.00 424.00 491.50 682.00 937.00 915.50 684.50 591.50 319.50 102.00 5729.50
1966 99.50 134.50 258.00 452.00 611.00 728.00 843.00 893.00 776.50 490.50 289.50 189.50 5765.00
1967 178.50 176.00 182.50 278.50 603.00 821.50 948.00 1084.00 860.00 530.00 290.00 137.50 6089.50
1968 111.00 334.00 338.50 328.50 573.50 728.00 944.50 831.00 717.00 461.50 261.50 62.00 5691.00
1969 16.00 95.50 311.50 366.50 690.00 817.50 854.00 835.50 722.00 441.50 256.50 142.00 5548.50
1970 123.50 249.00 284.00 279.00 558.50 799.50 909.50 886.00 649.50 470.00 269.00 80.50 5558.00
1971 126.50 137.50 175.00 359.50 571.00 621.00 917.00 984.50 670.00 426.00 204.50 58.00 5250.50
1972 82.00 178.00 333.50 259.00 660.00 717.50 959.00 982.50 652.50 462.50 271.50 144.50 5702.50
1973 91.50 183.00 255.50 402.50 621.00 710.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2264.00
Period of Record Statistics
MEAN 95.78 150.68 251.66 387.00 586.65 706.05 887.14 882.92 728.93 505.18 229.77 126.37 5549.96
S.D. 60.73 70.21 76.47 76.39 78.42 63.23 60.57 63.31 65.57 65.53 64.33 47.65 345.42
SKEW 0.50 0.66 0.85 0.10 -0.07 0.19 -0.19 0.78 0.26 0.10 0.20 0.37 0.27
MAX 263.00 334.00 472.00 592.50 750.00 824.50 1018.50 1084.00 867.50 683.00 384.00 253.50 6400.00
MIN 0.00 27.50 102.00 224.00 426.50 576.50 742.00 756.00 589.50 338.93 103.50 48.50 4647.00
NO YRS 46 45 46 46 46 46 44 45 45 45 45 45 43