SALEM WSO AIRPORT, OREGON

Monthly Total Growing Degree Days

(357500)

Base Temperature = 50 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 0.00 0.00 17.50 24.50 122.00 234.83 a 370.50 416.50 199.00 24.50 18.00 10.50 1437.83
1894 6.00 0.00 19.00 50.50 180.50 282.50 464.00 615.50 287.50 92.00 21.00 0.00 2018.50
1895 14.50 3.00 15.00 94.00 25.50 w 336.00 443.00 467.50 212.00 151.50 15.50 7.50 1759.50
1896 13.00 23.50 30.50 11.00 108.50 320.00 609.00 484.00 306.50 135.50 8.00 9.00 2058.50
1897 3.00 0.00 z 0.00 o 133.00 296.50 326.50 415.00 586.00 261.50 91.00 30.00 7.50 2150.00
1898 0.00 r 14.00 0.50 84.50 190.50 376.50 476.50 559.50 342.50 66.50 8.50 0.00 2119.50
1899 22.50 20.72 c 1.03 a 29.00 111.50 261.96 b 495.00 373.50 356.00 69.50 54.00 0.00 1794.72
1900 12.00 5.00 68.00 60.50 262.50 475.50 596.00 535.50 0.00 z 178.00 0.00 z 0.00 z 2193.00
1901 0.00 z 0.00 z 0.00 z 0.00 z 227.73 e 269.40 e 0.00 z 326.50 l 297.00 299.00 0.00 z 0.00 1093.13
1902 9.00 20.50 1.50 33.00 194.00 328.00 0.00 z 0.00 z 292.50 135.00 8.00 0.00 1021.50
1903 6.00 0.00 16.00 40.00 179.50 381.50 423.00 473.50 347.50 128.50 15.50 3.00 2014.00
1904 5.00 0.00 8.50 145.50 244.50 370.00 521.00 557.00 374.00 166.00 40.50 1.50 2433.50
1905 3.00 28.00 97.00 138.00 185.50 322.50 583.50 495.50 367.00 70.50 2.00 1.50 2294.00
1906 4.00 8.00 31.00 169.50 204.50 285.50 680.50 572.00 357.00 176.00 60.50 8.00 2556.50
1907 0.00 35.26 a 17.00 87.50 253.00 355.50 547.00 123.00 w 95.00 u 32.00 z 2.00 y 1.50 r 1295.26
1908 0.00 l 1.00 q 22.45 b 77.22 c 42.50 h 308.00 632.63 d 252.50 q 319.00 140.50 44.00 0.00 1543.80
1909 0.00 3.00 6.50 31.00 135.00 351.50 400.00 476.00 376.00 122.00 35.50 2.00 1938.50
1910 3.50 0.00 79.00 107.00 284.50 297.50 533.50 419.00 272.00 157.00 13.00 0.50 2166.50
1911 0.00 0.00 28.50 61.61 b 123.50 289.14 a 603.00 520.50 220.00 87.50 22.00 0.00 1955.75
1912 0.50 4.14 a 4.00 g 28.00 235.50 350.50 527.60 e 304.00 i 303.62 a 66.50 10.50 0.00 1526.86
1913 0.00 7.50 9.00 81.50 209.50 355.00 498.50 588.50 0.00 z 70.00 0.00 0.00 1819.50
1914 6.00 0.00 32.00 62.50 285.50 311.50 567.50 542.50 271.00 165.00 35.50 0.00 2279.00
1915 0.00 0.00 88.50 152.00 186.50 334.00 512.00 629.50 337.00 203.50 17.00 0.00 2460.00
1916 0.00 13.00 19.50 78.50 115.00 329.50 439.00 568.50 367.50 96.50 0.00 0.00 2027.00
1917 0.00 1.00 0.00 32.50 132.00 338.00 590.50 634.50 368.00 177.00 47.00 36.00 2356.50
1918 21.50 0.00 29.50 177.00 176.50 485.00 506.50 510.00 489.00 165.00 2.50 9.00 2571.50
1919 7.75 a 0.00 7.50 56.00 181.50 273.00 519.00 513.00 321.50 32.55 a 0.00 z 0.00 j 1911.80
1920 9.50 0.00 a 1.00 30.50 111.50 312.00 455.00 534.00 228.50 g 95.58 a 23.50 3.50 1576.08
1921 0.00 12.50 16.00 54.50 169.50 411.00 469.50 514.00 255.00 183.00 24.00 14.50 2123.50
1922 0.00 a 0.00 2.00 28.00 232.00 487.00 603.50 527.00 398.50 145.50 0.50 14.00 2438.00
1923 9.00 0.00 36.50 80.00 216.00 354.50 545.00 617.50 410.00 159.50 16.50 0.00 2444.50
1924 12.00 20.00 1.50 96.50 322.50 450.50 535.50 523.50 372.00 158.00 14.50 16.00 2522.50
1925 9.00 14.00 7.50 113.00 299.50 396.00 599.50 505.50 364.50 140.50 2.00 19.00 2470.00
1926 0.50 13.00 95.50 282.50 254.00 510.50 645.50 536.50 304.50 189.50 27.00 7.00 2866.00
1927 0.00 b 0.50 6.00 86.50 140.50 440.50 608.50 590.50 338.50 138.47 a 52.76 a 6.20 a 2408.93
1928 3.50 0.00 53.00 60.00 340.00 310.86 a 557.00 477.50 306.21 a 150.35 a 9.00 1.55 a 2268.97
1929 0.00 0.00 15.00 26.50 186.00 330.00 e 471.50 522.19 b 353.50 200.00 8.00 23.00 2135.69
1930 0.00 24.00 30.00 75.00 91.00 246.00 381.76 d 515.38 c 339.00 85.00 15.00 2.50 1804.63
1931 12.92 a 5.00 19.93 c 97.50 275.38 a 298.50 525.50 496.00 317.50 114.00 12.50 2.07 a 2176.80
1932 0.00 18.50 16.53 a 56.50 146.50 420.52 a 424.50 520.00 347.50 186.00 27.50 4.13 a 2168.18
1933 3.00 0.00 3.00 46.50 89.50 318.50 461.90 a 524.00 237.41 a 165.69 b 12.50 18.71 b 1880.71
1934 3.50 g 4.31 b 89.00 187.50 b 263.50 a 368.00 449.00 514.00 312.50 175.00 52.00 0.00 2414.81
1935 7.00 0.50 5.50 70.50 144.00 360.00 a 491.50 491.50 411.50 120.38 a 1.55 a 0.00 2103.94
1936 0.50 0.52 a 7.00 159.00 258.00 378.00 477.50 497.00 317.50 182.00 1.00 6.50 2284.52
1937 0.00 0.00 26.50 30.50 222.00 380.00 486.50 459.00 327.00 193.00 21.00 11.00 2156.50
1938 0.00 3.50 12.00 78.00 221.50 392.00 596.50 437.50 456.50 141.50 2.00 13.50 2354.50
1939 1.00 0.00 47.00 110.00 234.00 289.50 551.50 525.50 399.50 146.50 16.50 11.00 2332.00
1940 0.00 4.50 35.00 81.50 288.30 a 421.00 386.00 h 363.00 l 415.50 143.00 i 10.50 4.98 c 1261.28
1941 2.50 1.22 e 57.00 104.00 207.50 364.00 681.00 555.50 308.50 124.50 60.50 12.50 2478.72
1942 3.50 0.00 13.00 88.50 194.50 305.50 575.50 599.00 395.00 182.50 10.00 0.00 2367.00
1943 0.00 0.00 16.50 123.00 148.00 307.50 527.50 499.00 464.00 165.50 6.00 2.00 2259.00
1944 1.00 3.00 21.50 59.50 198.00 341.00 549.50 503.50 459.00 228.50 19.50 2.00 2386.00
1945 5.50 5.50 1.50 59.50 246.50 351.00 560.00 537.50 304.50 148.00 13.00 8.00 2240.50
1946 0.50 3.00 7.50 62.50 262.00 311.50 537.00 538.50 313.50 60.00 1.00 9.50 2106.50
1947 4.00 7.00 46.00 128.50 329.00 319.50 490.00 455.00 388.50 140.00 19.00 2.50 2329.00
1948 0.00 3.50 7.00 29.50 169.00 454.00 481.02 a 464.00 330.50 91.50 3.00 0.00 a 2033.02
1949 0.00 2.50 11.37 a 107.00 279.50 364.00 496.00 503.00 399.00 40.50 50.50 0.50 2253.87
1950 0.00 10.00 19.00 23.00 175.50 365.00 536.00 580.00 353.50 104.00 44.50 18.50 2229.00
1951 5.00 13.50 0.00 93.50 188.50 420.50 517.00 456.50 380.50 130.50 7.50 0.00 2213.00
1952 3.00 0.00 5.50 60.00 187.00 280.00 537.00 496.00 414.50 238.00 0.00 1.50 2222.50
1953 15.50 4.00 8.50 50.00 138.00 227.50 453.00 476.00 375.50 138.50 20.50 3.50 1910.50
1954 2.50 1.50 2.00 42.00 178.50 210.00 393.00 405.00 271.00 96.50 37.00 0.00 1639.00
1955 0.00 0.00 1.50 16.00 111.00 291.50 388.50 450.00 312.50 119.00 27.50 9.00 1726.50
1956 1.00 0.00 4.00 80.50 266.50 253.50 556.50 470.00 352.00 107.50 0.50 7.00 2099.00
1957 0.00 9.00 9.00 79.50 259.00 350.00 453.50 426.00 458.00 105.50 3.00 2.00 2154.50
1958 2.50 23.00 5.50 48.50 342.50 448.50 656.00 627.50 371.50 175.50 46.00 16.00 2763.00
1959 1.00 3.50 7.50 64.00 137.00 347.00 556.00 478.50 304.50 144.00 16.00 4.00 2063.00
1960 3.00 1.00 10.00 60.00 99.00 320.50 544.50 457.50 372.50 166.50 24.00 2.00 2060.50
1961 9.00 12.50 18.50 55.50 134.00 398.00 542.50 597.00 249.50 135.50 2.50 5.50 2160.00
1962 1.50 2.00 0.00 75.50 71.00 280.50 443.50 458.50 375.50 90.00 27.00 0.00 1825.00
1963 0.00 23.50 8.50 23.50 177.50 274.00 367.50 483.00 470.50 152.00 5.50 4.50 1990.00
1964 1.50 0.00 9.50 16.00 142.00 309.00 508.00 427.00 264.00 126.00 10.50 11.00 1824.50
1965 5.00 0.00 13.50 81.50 101.50 268.00 533.50 518.50 287.50 173.00 33.50 3.00 2018.50
1966 0.00 0.00 21.00 53.50 164.50 354.00 470.50 523.50 397.00 123.00 17.00 9.00 2133.00
1967 9.00 0.00 8.00 0.00 158.00 424.00 545.00 669.50 447.00 146.50 16.00 7.00 2430.00
1968 8.50 45.00 21.50 31.00 154.50 288.00 500.00 471.50 313.50 70.00 13.00 0.00 1916.50
1969 1.50 0.00 23.00 24.50 285.00 460.50 462.00 418.50 333.00 42.50 18.50 3.50 2072.50
1970 17.50 0.50 5.00 10.00 153.00 431.00 532.50 478.50 250.00 84.00 7.50 4.00 1973.50
1971 10.50 0.00 6.50 19.00 120.00 245.50 537.50 592.00 279.00 110.50 0.50 0.00 1921.00
1972 2.00 10.50 55.50 17.50 202.50 299.00 544.00 564.00 245.50 73.50 17.50 18.00 2049.50
1973 6.50 3.50 0.00 31.50 186.00 332.50 540.50 420.50 363.00 78.00 15.00 3.00 1980.00
1974 6.50 0.00 24.00 22.50 111.00 354.00 488.50 538.00 472.00 108.00 16.50 8.00 2149.00
1975 16.00 6.00 2.50 2.50 153.00 295.00 528.50 404.50 406.00 88.00 21.50 17.50 1941.00
1976 1.50 0.00 8.50 29.50 120.50 213.50 473.00 439.00 359.00 99.50 36.50 0.00 1780.50
1977 2.50 9.00 0.00 73.50 67.50 353.50 451.00 622.50 268.00 78.50 28.00 17.50 1971.50
1978 0.00 7.50 34.50 39.00 152.00 455.50 582.50 568.50 329.50 174.00 10.00 0.00 2353.00
1979 0.00 1.00 37.00 61.50 211.50 352.00 554.50 485.00 386.50 167.00 8.00 12.50 2276.50
1980 0.00 8.00 3.00 67.00 117.00 225.50 480.00 395.00 374.50 145.00 47.50 30.00 1892.50
1981 0.00 22.50 9.00 82.50 149.50 270.00 466.50 578.50 357.00 52.00 5.50 7.00 2000.00
1982 0.50 20.50 8.00 18.50 158.50 451.50 485.00 509.00 342.00 129.00 5.50 5.50 2133.50
1983 13.50 13.50 20.50 65.50 231.50 308.00 444.00 550.00 309.00 96.00 47.00 2.00 2100.50
1984 28.50 3.50 26.50 12.00 108.50 222.00 478.50 519.50 338.50 119.50 15.50 0.00 1872.50
1985 0.00 0.00 5.00 85.00 184.50 336.00 624.00 477.00 250.00 91.50 24.00 0.00 2077.00
1986 8.00 33.00 41.50 36.00 188.00 425.00 417.00 614.50 267.50 120.00 16.00 0.00 2166.50
1987 0.00 0.00 19.00 98.50 251.00 419.00 460.00 552.00 381.00 193.00 29.50 5.00 2408.00
1988 0.00 8.00 10.50 78.00 138.50 314.50 520.00 490.00 367.50 218.50 22.50 3.50 2171.50
1989 1.50 0.00 11.50 153.50 193.50 398.50 452.00 462.50 393.00 122.50 31.50 9.00 2229.00
1990 10.00 3.50 28.00 98.50 165.50 368.00 607.50 592.50 446.00 74.50 31.00 0.00 2425.00
1991 14.00 34.50 8.50 39.00 105.50 237.00 556.50 551.00 461.50 183.50 38.00 1.00 2230.00
1992 21.00 26.50 40.00 147.00 335.50 472.50 585.50 563.50 360.00 167.50 18.00 0.00 2737.00
1993 4.00 0.00 24.50 82.00 325.00 337.00 408.00 533.00 399.00 201.50 1.00 17.50 2332.50
1994 8.50 12.00 63.00 109.00 285.00 349.50 591.00 528.00 454.50 108.00 2.00 20.50 2531.00
1995 20.00 27.50 28.50 51.00 278.50 377.50 573.50 467.00 439.00 101.00 86.00 13.50 2463.00
1996 9.50 19.00 18.50 90.00 123.50 326.00 626.50 551.00 298.50 142.50 7.00 7.00 2219.00
1997 10.00 4.00 21.00 51.00 323.50 316.00 524.50 613.00 423.00 86.50 21.50 0.00 2394.00
1998 2.00 7.00 39.00 74.00 150.50 338.50 608.00 589.00 434.00 113.50 26.00 13.50 2395.00
1999 0.00 0.00 10.50 61.50 131.00 297.50 498.00 554.00 396.50 137.50 55.50 4.00 2146.00
2000 0.00 4.50 2.50 80.00 189.00 407.00 494.50 482.50 365.00 113.00 4.00 0.00 2142.00
2001 0.00 4.00 14.50 41.00 233.00 257.00 497.00 531.50 407.00 120.50 44.00 0.50 2150.00
2002 10.50 13.50 0.00 58.50 145.50 359.50 583.00 530.00 395.00 121.00 18.50 7.00 2242.00
2003 22.00 0.50 42.00 37.50 194.50 421.50 627.00 581.50 444.00 234.50 8.00 2.50 2615.50
2004 3.00 0.00 42.00 99.50 209.00 393.00 619.00 623.00 317.50 153.50 6.50 9.50 2475.50
2005 16.00 0.00 35.50 67.50 244.50 291.00 584.50 587.00 317.50 146.50 3.00 10.50 2303.50
2006 3.00 4.50 4.50 62.00 227.50 429.00 612.50 539.00 402.00 101.50 51.00 2.50 2439.00
2007 1.50 7.00 51.00 58.50 217.50 332.00 615.50 535.50 339.00 77.00 10.00 8.50 2253.00
2008 0.00 1.00 2.50 28.00 234.50 279.00 559.00 546.00 392.50 98.00 43.00 0.50 2184.00
2009 4.00 0.00 3.50 52.00 231.00 416.00 657.00 568.00 431.50 119.00 12.00 7.50 2501.50
2010 7.00 8.50 11.00 42.50 153.50 300.00 542.50 539.50 409.50 148.00 46.00 14.50 2222.50
2011 17.50 1.00 20.00 11.50 117.00 322.00 493.50 591.50 497.00 160.50 7.00 6.50 2245.00
2012 8.27 a 3.00 3.50 94.50 192.00 295.00 522.50 608.50 424.00 179.00 62.00 4.00 2396.27
2013 0.00 2.50 53.00 6.50 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 55.50
Period of Record Statistics
MEAN 5.11 6.89 20.70 68.70 193.60 342.79 523.05 521.73 354.20 131.67 20.84 6.09 2195.24
S.D. 6.28 9.39 21.30 44.06 65.54 65.72 69.38 60.51 64.67 47.09 17.43 6.86 242.16
SKEW 1.42 1.71 1.71 1.45 0.37 0.31 -0.02 -0.06 -0.05 0.33 1.05 1.54 -0.08
MAX 28.50 45.00 97.00 282.50 342.50 510.50 681.00 669.50 497.00 299.00 86.00 36.00 2866.00
MIN 0.00 0.00 0.00 0.00 67.50 210.00 367.50 373.50 199.00 24.50 0.00 0.00 1437.83
NO YRS 117 118 118 119 118 120 117 114 116 118 116 117 106