SALEM WSO AIRPORT, OREGON

Monthly Total Growing Degree Days

(357500)

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
1892 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
1893 3.50 68.00 185.00 223.50 426.50 534.83 a 680.50 726.50 498.50 258.00 152.00 125.50 3882.33
1894 88.00 48.00 160.00 305.00 462.00 582.50 774.00 925.50 587.50 378.50 196.00 27.00 4534.00
1895 62.00 111.00 147.50 350.00 104.50 w 636.00 753.00 777.50 509.00 424.00 144.50 93.00 4007.50
1896 147.50 183.50 203.00 226.00 393.50 620.00 919.00 794.00 606.00 435.50 112.00 154.00 4794.00
1897 80.00 2.50 z 57.00 o 402.00 605.50 626.50 725.00 896.00 561.00 376.50 181.50 139.00 4593.00
1898 30.00 r 151.00 105.00 348.50 500.00 676.50 786.50 869.50 642.50 357.00 146.00 35.00 4617.50
1899 169.50 149.52 c 129.17 a 246.50 402.00 560.36 b 805.00 683.50 656.00 313.00 318.50 113.00 4546.04
1900 128.00 117.00 318.00 319.50 572.50 775.50 906.00 845.50 0.00 z 488.00 0.00 z 0.00 z 4470.00
1901 0.00 z 0.00 z 0.00 z 0.00 z 537.73 e 569.40 e 0.00 z 516.50 l 597.00 609.00 0.00 z 84.50 2397.63
1902 81.00 175.50 158.00 284.00 496.00 628.00 0.00 z 0.00 z 588.50 421.00 147.50 80.00 3059.50
1903 129.00 80.50 171.50 267.50 485.00 681.50 733.00 783.50 645.50 428.50 178.50 95.50 4679.50
1904 95.50 57.00 122.50 412.00 548.00 670.00 831.00 867.00 674.00 469.50 305.50 115.50 5167.50
1905 80.50 135.50 342.00 431.50 485.00 622.50 893.50 805.50 667.00 328.00 108.00 77.50 4976.50
1906 123.50 127.50 203.50 440.50 513.50 585.50 990.50 882.00 657.00 468.00 230.00 137.00 5358.50
1907 33.50 204.30 a 176.50 363.50 563.00 655.00 857.00 203.00 w 185.00 u 82.00 z 36.50 y 46.50 r 2852.80
1908 53.00 l 52.50 q 188.14 b 339.44 c 256.00 h 608.00 942.63 d 392.50 q 612.50 433.50 252.50 45.50 3422.21
1909 62.50 113.50 227.50 293.00 434.50 651.50 710.00 786.00 676.00 412.00 220.00 24.00 4610.50
1910 58.00 50.00 349.00 376.50 594.50 597.50 843.50 729.00 572.00 460.50 168.00 109.50 4908.00
1911 44.00 32.00 263.50 289.29 b 420.50 589.14 a 913.00 830.50 516.50 385.00 201.50 68.50 4553.42
1912 134.50 143.45 a 134.00 g 280.50 538.50 650.50 837.60 e 524.00 i 603.62 a 321.00 195.00 59.50 3764.16
1913 40.50 51.50 160.50 325.50 515.50 655.00 808.50 898.50 0.00 z 351.50 105.00 23.00 3935.00
1914 112.00 63.00 235.50 326.50 595.50 610.50 877.50 852.50 571.00 474.00 198.50 36.00 4952.50
1915 53.00 130.50 368.50 445.00 491.50 634.00 822.00 939.50 637.00 512.50 184.50 101.50 5319.50
1916 12.50 191.50 212.50 367.50 401.00 629.50 749.00 878.50 667.50 391.50 84.50 25.00 4610.50
1917 84.50 76.00 65.00 236.50 438.50 638.00 900.50 944.50 668.00 464.00 315.50 245.00 5076.00
1918 144.00 60.50 236.50 470.00 485.00 785.00 816.50 820.00 789.00 461.00 140.50 85.50 5293.50
1919 114.18 a 55.50 167.00 311.00 483.00 573.00 829.00 823.00 621.50 205.12 a 0.00 z 26.50 j 4182.30
1920 92.00 26.41 a 138.00 218.00 405.00 612.00 765.00 844.00 458.50 g 356.50 a 150.00 102.00 3708.91
1921 57.00 152.00 204.00 289.50 475.00 711.00 779.50 824.00 555.00 488.50 230.00 89.00 4854.50
1922 19.63 a 31.50 88.00 232.00 531.00 787.00 913.50 837.00 698.50 436.50 78.00 109.00 4761.63
1923 122.50 33.00 180.50 367.00 524.00 654.50 855.00 927.50 710.00 447.00 240.00 82.00 5143.00
1924 89.50 222.00 173.00 360.50 630.00 750.50 845.50 833.50 672.00 455.00 158.00 114.50 5304.00
1925 160.00 177.00 205.00 396.00 609.50 696.00 909.50 815.50 663.50 443.00 163.50 168.50 5407.00
1926 80.00 220.00 380.50 578.50 563.00 810.50 955.50 846.50 604.50 496.00 258.50 104.50 5898.00
1927 103.69 b 127.00 190.50 331.50 440.50 740.50 918.50 900.50 638.50 435.03 a 278.28 a 34.62 a 5139.12
1928 81.50 85.50 313.00 308.50 649.50 610.86 a 867.00 787.50 606.21 a 435.03 a 169.00 52.18 a 4965.79
1929 17.50 34.50 215.00 222.00 493.50 630.00 e 781.50 832.19 b 653.50 501.00 122.50 168.50 4671.69
1930 19.50 173.00 236.00 359.00 374.00 546.00 691.76 d 825.38 c 639.00 349.00 130.50 61.00 4404.13
1931 125.55 a 75.00 213.68 c 362.00 582.80 a 598.50 835.50 806.00 617.50 401.00 114.50 54.77 a 4786.79
1932 45.00 88.50 193.75 a 307.00 455.50 720.52 a 734.50 830.00 647.50 484.00 221.00 71.30 a 4798.57
1933 57.00 36.00 179.00 282.50 375.00 618.50 771.90 a 834.00 535.86 a 453.78 b 132.00 197.22 b 4472.76
1934 128.00 g 171.23 b 373.00 472.50 b 573.50 a 668.00 759.00 824.00 599.50 479.50 302.50 95.50 5318.23
1935 75.00 119.50 113.00 308.00 447.00 660.00 a 801.50 801.50 711.50 353.92 a 97.24 a 72.00 4560.16
1936 116.50 49.20 a 138.50 408.00 568.00 678.00 787.50 807.00 617.50 475.00 97.00 121.00 4863.20
1937 1.50 72.00 265.50 300.00 532.00 680.00 796.50 769.00 627.00 496.00 268.00 130.00 4937.50
1938 65.50 95.50 171.50 352.50 522.50 692.00 906.50 747.50 756.50 433.00 109.00 130.50 4982.50
1939 84.00 37.00 235.50 388.00 543.50 589.50 861.50 835.50 699.50 443.00 213.50 186.00 5116.50
1940 68.50 157.50 290.00 364.00 598.30 a 721.00 616.00 h 553.00 l 715.50 351.00 i 123.00 134.52 c 3172.32
1941 101.50 150.35 e 345.50 391.00 515.50 664.00 991.00 865.50 608.50 431.50 237.00 124.50 5425.85
1942 48.50 94.50 178.50 355.50 492.00 605.50 885.50 909.00 695.00 474.50 178.50 132.50 5049.50
1943 19.00 119.00 172.50 399.50 449.00 607.50 837.50 809.00 764.00 451.00 171.00 58.50 4857.50
1944 59.50 89.50 184.00 324.00 504.50 641.00 859.50 813.50 759.00 538.50 173.50 47.00 4993.50
1945 127.50 132.00 148.00 289.50 556.50 651.00 870.00 847.50 604.50 413.50 182.00 125.50 4947.50
1946 77.50 94.00 191.50 308.00 572.00 611.50 847.00 848.50 613.50 319.00 111.00 124.00 4717.50
1947 59.00 158.50 282.50 400.50 639.00 619.50 800.00 765.00 688.50 445.50 209.00 83.00 5150.00
1948 56.50 83.50 125.00 226.50 471.50 754.00 791.02 a 774.00 629.00 365.50 109.50 39.27 a 4425.28
1949 0.00 89.50 212.87 a 382.50 587.00 664.00 806.00 813.00 699.00 268.50 287.00 63.50 4872.87
1950 17.00 136.50 161.00 252.00 471.00 665.00 846.00 890.00 651.50 368.50 215.00 229.50 4903.00
1951 78.50 106.00 94.00 375.50 491.00 720.50 827.00 766.50 680.50 406.00 166.50 33.50 4745.50
1952 49.50 59.50 132.50 312.00 478.00 579.50 847.00 806.00 714.50 539.50 55.50 78.00 4651.50
1953 222.50 90.00 159.50 274.00 436.50 525.00 763.00 786.00 675.50 439.00 229.00 92.50 4692.50
1954 68.50 94.50 100.50 265.00 483.00 510.00 703.00 715.00 571.00 350.50 281.50 61.50 4204.00
1955 32.00 39.00 75.00 156.50 404.50 591.50 698.50 760.00 612.50 409.50 190.00 98.50 4067.50
1956 104.50 23.50 150.50 338.50 575.00 553.50 866.50 780.00 652.00 361.00 105.50 95.50 4606.00
1957 8.00 110.50 213.50 354.00 569.00 650.00 763.50 736.00 758.00 409.50 104.50 120.50 4797.00
1958 123.00 232.50 160.00 306.50 649.50 748.50 966.00 937.50 671.50 476.50 237.50 183.50 5692.50
1959 157.50 96.00 186.50 323.50 434.00 647.00 866.00 788.50 604.50 444.00 153.00 55.00 4755.50
1960 40.50 95.00 173.50 286.50 386.00 620.50 854.50 767.50 672.50 458.50 217.50 62.50 4635.00
1961 143.00 171.50 198.50 272.00 432.50 698.00 852.50 907.00 549.50 390.50 84.50 107.50 4807.00
1962 60.50 91.00 133.00 325.00 352.50 578.50 753.50 768.50 675.50 391.00 215.00 107.00 4451.00
1963 17.50 216.50 141.50 212.50 470.00 573.50 677.50 793.00 770.50 426.00 198.00 81.50 4578.00
1964 74.50 36.50 117.50 241.00 422.50 608.00 818.00 737.00 564.00 409.00 113.00 103.50 4244.50
1965 68.50 99.00 206.00 309.50 376.50 568.00 843.50 828.50 586.50 474.50 246.50 64.00 4671.00
1966 62.00 48.00 163.50 316.00 460.50 654.00 780.50 833.50 697.00 390.50 215.50 145.50 4766.50
1967 133.00 77.50 105.50 142.00 444.50 724.00 855.00 979.50 747.00 443.00 200.00 125.50 4976.50
1968 84.50 242.00 226.00 206.00 449.50 588.00 810.00 781.50 613.50 354.00 171.00 43.50 4569.50
1969 30.00 49.00 196.50 272.50 585.00 760.50 772.00 728.50 633.00 305.50 157.50 98.00 4588.00
1970 137.00 141.00 169.50 173.00 439.00 731.00 842.50 788.50 549.00 332.00 140.00 51.50 4494.00
1971 92.00 54.50 101.50 213.50 412.00 545.50 847.50 902.00 574.00 339.50 141.00 37.50 4260.50
1972 68.50 139.50 246.50 178.00 511.50 599.00 854.00 874.00 526.50 320.50 196.50 123.50 4638.00
1973 67.00 117.50 143.00 273.00 487.50 632.50 850.50 730.50 663.00 369.00 137.00 122.00 4592.50
1974 116.00 64.50 206.50 279.50 398.00 654.00 798.50 848.00 772.00 403.00 196.00 138.00 4874.00
1975 134.50 87.00 113.50 161.00 441.00 595.00 838.50 714.50 706.00 359.00 142.00 134.50 4426.50
1976 86.00 57.50 102.00 215.50 410.50 505.50 783.00 749.00 659.00 374.50 207.00 41.50 4191.00
1977 58.50 136.00 139.00 317.50 365.00 653.50 761.00 932.50 568.00 373.50 188.00 137.00 4629.50
1978 77.00 169.00 252.50 266.50 457.50 755.50 892.50 878.50 629.50 438.00 86.00 42.00 4944.50
1979 11.00 123.50 279.00 313.00 519.50 652.00 864.50 795.00 686.50 453.50 92.00 165.00 4954.50
1980 38.50 114.50 141.50 320.00 424.50 525.50 790.00 705.00 674.50 420.50 229.50 147.00 4531.00
1981 54.00 137.50 204.00 316.50 450.50 570.00 776.50 888.50 657.00 321.50 155.00 125.50 4656.50
1982 67.00 105.50 140.50 176.00 455.50 751.50 795.00 819.00 641.00 413.00 110.00 101.00 4575.00
1983 138.50 179.00 276.50 303.00 536.00 608.00 754.00 860.00 609.00 392.50 279.00 86.50 5022.00
1984 169.50 127.00 267.50 232.50 399.50 521.50 788.50 829.50 638.50 353.00 143.50 32.50 4503.00
1985 5.00 49.00 90.50 341.00 469.00 636.00 934.00 787.00 550.00 346.50 95.00 21.00 4324.00
1986 118.50 160.00 314.50 250.50 472.00 725.00 727.00 924.50 567.50 423.00 207.50 58.50 4948.50
1987 91.00 115.00 225.00 357.00 559.00 719.00 770.00 862.00 681.00 498.50 216.50 87.00 5181.00
1988 54.50 131.50 173.00 333.00 424.50 614.50 830.00 800.00 667.50 515.50 210.50 75.50 4830.00
1989 88.50 43.00 210.00 437.00 503.00 698.50 762.00 772.50 693.00 401.50 223.50 77.50 4910.00
1990 114.00 102.50 244.00 382.00 471.50 668.00 917.50 902.50 746.00 347.00 210.00 47.50 5152.50
1991 75.00 241.50 144.50 275.50 405.50 536.50 866.50 861.00 761.50 441.50 232.00 93.00 4934.00
1992 155.50 224.50 326.00 414.00 645.50 772.50 895.50 873.50 660.00 466.50 197.00 43.00 5673.50
1993 52.00 61.50 282.50 368.00 635.00 637.00 718.00 843.00 699.00 511.50 75.50 122.00 5005.00
1994 151.50 118.00 315.50 396.00 595.00 649.50 901.00 838.00 754.50 391.50 83.00 123.50 5317.00
1995 155.00 211.00 230.00 298.00 588.50 677.50 883.50 777.00 739.00 383.00 332.00 120.50 5395.00
1996 113.50 141.00 224.50 355.50 407.00 626.00 936.50 861.00 598.50 385.00 168.50 107.00 4924.00
1997 96.50 86.50 198.50 283.00 631.50 616.00 834.50 923.00 723.00 371.50 240.00 37.00 5041.00
1998 157.00 154.50 227.00 313.00 451.50 638.50 918.00 899.00 734.00 384.50 233.00 114.50 5224.50
1999 94.00 94.00 146.50 280.00 413.50 596.00 808.00 864.00 696.50 431.00 280.50 108.00 4812.00
2000 55.50 122.50 134.00 338.50 488.00 707.00 804.50 792.50 665.00 409.50 90.00 62.00 4669.00
2001 60.50 76.00 208.00 235.50 536.00 557.00 807.00 841.50 707.00 389.00 230.50 68.50 4716.50
2002 81.50 99.00 135.00 312.00 434.00 659.50 893.00 840.00 695.00 380.00 195.00 118.50 4842.50
2003 172.00 105.50 279.00 285.00 489.00 721.50 937.00 891.50 744.00 526.00 143.50 88.00 5382.00
2004 82.00 113.50 283.50 376.00 519.00 693.00 929.00 933.00 617.50 441.50 136.00 98.00 5222.00
2005 114.50 67.50 267.50 306.00 554.50 591.00 894.50 897.00 617.50 440.00 97.00 112.00 4959.00
2006 137.50 100.00 152.00 327.00 530.50 729.00 922.50 849.00 702.00 371.50 223.00 77.50 5121.50
2007 50.50 133.50 278.50 294.50 516.50 632.00 925.50 845.50 639.00 356.50 137.00 75.00 4884.00
2008 32.00 96.50 106.50 194.50 538.00 578.00 869.00 856.00 692.50 364.50 242.00 48.00 4617.50
2009 65.50 60.00 137.00 283.00 534.00 716.00 967.00 878.00 731.50 413.50 206.00 81.00 5072.50
2010 194.50 177.50 224.00 291.00 445.50 600.00 852.50 849.50 709.50 450.50 202.00 146.50 5143.00
2011 134.00 73.00 218.00 224.00 420.00 622.00 803.50 901.50 797.00 449.50 154.50 50.50 4847.50
2012 106.43 a 91.50 138.50 347.00 487.50 595.00 832.50 918.50 724.00 469.50 252.00 105.00 5067.43
2013 60.00 113.00 245.50 16.50 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 418.50
Period of Record Statistics
MEAN 84.35 110.17 197.20 312.11 494.16 642.61 833.05 831.73 653.62 414.10 180.28 94.13 4846.03
S.D. 45.86 52.59 69.47 72.83 72.03 65.97 69.38 60.52 65.37 62.80 61.66 43.70 342.84
SKEW 0.35 0.54 0.58 0.26 0.28 0.30 -0.02 -0.06 -0.07 -0.17 0.21 0.65 0.17
MAX 222.50 242.00 380.50 578.50 649.50 810.50 991.00 979.50 797.00 609.00 332.00 245.00 5898.00
MIN 0.00 23.50 65.00 142.00 352.50 505.50 677.50 683.50 498.50 205.12 55.50 21.00 3882.33
NO YRS 117 118 118 119 118 120 117 114 116 118 116 117 106