SPOKANE INTL AP, WASHINGTON

Monthly Total Growing Degree Days

(457938)

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
1889 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 503.50 212.59 a 125.00 0.00 0.00 841.09
1890 0.00 0.00 0.00 91.50 262.00 315.50 567.50 577.50 301.50 31.50 0.00 0.00 2147.00
1891 0.00 0.00 0.00 53.00 299.00 306.50 614.00 617.50 317.50 114.00 10.00 0.00 2331.50
1892 0.00 0.00 7.50 6.50 174.50 380.00 495.00 570.50 321.00 125.50 3.00 0.00 2083.50
1893 0.00 0.00 0.00 5.50 135.50 227.50 535.00 569.50 281.00 5.50 3.50 0.00 1763.00
1894 0.00 0.00 1.50 49.50 259.50 323.00 622.00 663.50 215.50 52.00 3.00 0.00 2189.50
1895 0.00 0.00 5.00 79.00 170.50 363.00 538.00 543.50 133.50 104.50 0.50 0.00 1937.50
1896 0.00 3.00 3.50 7.00 98.50 387.50 719.00 578.00 255.00 51.00 10.00 0.00 2112.50
1897 0.00 0.00 0.00 90.00 390.00 352.50 471.00 688.00 234.50 51.00 4.50 0.00 2281.50
1898 0.00 0.00 0.00 58.50 162.00 391.00 600.00 719.50 327.50 12.00 0.00 0.00 2270.50
1899 0.00 0.00 0.00 19.50 100.00 314.50 618.50 365.00 374.00 35.00 9.50 0.00 1836.00
1900 0.00 0.00 10.50 86.00 230.00 480.50 608.00 435.00 254.50 46.50 0.00 0.00 2151.00
1901 0.00 0.50 2.00 25.00 250.00 208.50 545.00 703.50 156.50 136.00 0.00 0.00 2027.00
1902 0.50 0.00 0.00 8.50 190.00 321.00 464.00 516.50 250.50 78.00 0.00 0.00 1829.00
1903 0.00 0.00 6.00 19.00 162.00 499.00 481.00 535.00 172.50 39.50 8.00 0.00 1922.00
1904 0.00 0.00 0.00 99.00 189.00 355.00 614.00 634.50 321.50 72.00 3.00 0.00 2288.00
1905 0.00 0.00 6.00 61.00 163.00 333.50 655.00 591.00 324.00 28.00 0.00 0.00 2161.50
1906 0.00 0.00 3.50 112.00 193.50 268.00 803.50 571.00 330.00 105.50 3.00 0.00 2390.00
1907 0.00 0.00 0.00 26.00 231.00 315.00 587.00 403.00 228.50 121.00 0.00 0.00 1911.50
1908 0.00 0.00 0.50 60.50 104.50 350.00 675.00 561.50 347.00 64.50 24.50 0.00 2188.00
1909 0.00 0.00 1.00 7.50 136.50 371.00 492.50 517.50 346.50 55.00 9.50 0.00 1937.00
1910 0.00 0.00 26.50 129.00 289.50 340.50 670.50 471.00 273.50 85.50 1.50 0.00 2287.50
1911 0.00 0.00 23.00 40.50 100.00 419.50 642.50 504.00 203.00 58.00 0.00 0.00 1990.50
1912 0.00 0.00 0.50 22.50 211.50 448.50 515.50 442.50 179.50 22.00 0.00 0.00 1842.50
1913 0.00 0.00 0.00 60.50 196.00 393.00 554.00 578.50 270.00 28.50 0.00 0.00 2080.50
1914 0.00 0.00 2.00 40.00 268.50 331.50 700.00 621.50 232.00 40.50 3.50 0.00 2239.50
1915 0.00 0.00 10.50 111.00 173.00 339.50 578.50 782.00 246.50 70.00 0.00 0.00 2311.00
1916 0.00 0.00 2.50 45.50 109.00 325.50 517.00 589.50 289.00 26.00 0.00 0.00 1904.00
1917 0.00 0.00 0.00 0.00 165.00 311.00 707.50 664.00 368.50 141.50 0.00 4.00 2361.50
1918 0.00 0.00 7.00 90.50 135.00 549.00 672.00 491.50 445.00 122.00 0.00 0.00 2512.00
1919 0.00 0.00 8.50 77.00 197.50 372.50 676.50 614.50 276.00 29.50 3.50 0.00 2255.50
1920 0.00 0.00 0.00 20.50 115.00 325.50 750.50 614.00 279.50 62.50 2.50 0.00 2170.00
1921 0.00 0.00 0.00 17.50 218.00 474.00 612.50 627.50 152.00 83.00 2.00 2.00 2188.50
1922 0.00 0.00 0.00 16.00 172.00 596.00 718.00 649.00 380.50 105.00 0.00 0.00 2636.50
1923 0.00 0.00 8.00 46.00 187.00 355.50 682.00 613.00 369.00 99.00 0.00 0.00 2359.50
1924 0.00 2.00 0.00 39.50 384.00 435.00 660.50 551.00 327.00 60.00 0.00 0.50 2459.50
1925 0.00 0.00 0.00 96.00 297.50 474.00 772.00 602.50 327.50 7.00 0.00 0.00 2576.50
1926 0.00 0.00 3.50 200.50 207.50 466.50 753.00 553.50 159.50 58.50 0.00 0.00 2402.50
1927 0.00 0.00 0.00 53.50 116.00 429.00 663.00 628.00 233.50 86.50 0.00 0.00 2209.50
1928 0.00 0.00 12.00 30.00 376.00 407.50 730.00 570.00 347.50 52.50 0.00 0.00 2525.50
1929 0.00 0.00 1.00 28.50 220.50 360.50 638.00 714.50 247.50 107.50 0.00 0.00 2318.00
1930 0.00 7.00 13.00 122.00 167.00 336.00 710.00 707.50 359.50 49.50 1.00 0.00 2472.50
1931 0.00 0.00 2.50 74.50 318.50 417.00 708.50 658.00 319.00 41.00 2.00 0.00 2541.00
1932 0.00 4.50 6.00 69.00 185.00 491.50 592.50 609.00 342.00 87.50 0.50 0.00 2387.50
1933 0.00 0.00 0.00 78.00 115.00 419.00 676.50 629.50 227.50 123.00 0.50 4.00 2273.00
1934 0.00 0.00 20.50 211.00 348.50 460.50 661.00 651.00 264.50 110.50 4.00 0.00 2731.50
1935 1.50 0.00 6.50 20.50 194.00 371.00 626.50 540.00 413.00 100.00 0.00 0.00 2273.00
1936 0.00 0.00 0.00 170.50 373.50 464.00 705.50 651.50 279.50 111.50 0.00 0.00 2756.00
1937 0.00 0.00 0.50 24.00 232.00 399.00 696.00 500.50 381.50 110.50 0.00 0.00 2344.00
1938 0.00 0.00 0.00 55.00 230.00 503.50 775.50 552.50 533.50 76.50 0.00 0.00 2726.50
1939 0.00 0.00 24.00 106.50 280.00 326.00 692.50 701.00 362.50 74.00 0.00 1.00 2567.50
1940 0.00 0.00 6.00 51.50 326.00 548.50 707.50 640.00 440.00 128.00 0.00 0.00 2847.50
1941 0.00 1.00 18.00 99.00 191.50 376.00 740.50 573.00 171.00 18.50 0.00 1.00 2189.50
1942 0.00 0.00 6.50 60.00 129.50 287.00 655.00 629.50 357.00 93.00 0.00 0.00 2217.50
1943 0.00 0.00 0.50 78.00 126.50 261.00 597.00 520.50 377.00 144.50 0.00 0.00 2105.00
1944 0.00 0.00 0.00 48.50 226.50 378.00 610.00 519.00 352.50 135.00 0.00 0.00 2269.50
1945 0.00 0.00 0.00 20.00 216.50 314.00 648.00 602.00 215.50 135.50 3.00 0.00 2154.50
1946 0.00 0.00 7.00 54.00 223.00 314.00 600.00 575.00 266.00 9.50 0.00 0.00 2048.50
1947 0.00 0.00 4.00 56.50 299.50 344.00 622.50 518.00 282.50 82.00 0.00 0.00 2209.00
1948 0.00 0.00 0.50 25.00 150.00 457.50 468.00 470.00 261.50 46.50 0.00 0.00 1879.00
1949 0.00 0.00 0.00 55.00 308.50 357.00 575.50 574.50 346.50 7.50 0.00 0.00 2224.50
1950 0.00 0.00 0.00 6.50 124.00 336.00 590.50 624.00 384.00 33.00 0.00 0.00 2098.00
1951 0.00 0.00 0.00 37.00 160.50 344.00 650.00 566.00 311.00 60.50 0.00 0.00 2129.00
1952 0.00 0.00 0.50 87.00 220.00 331.50 622.00 570.00 413.00 166.00 0.00 0.00 2410.00
1953 0.00 0.00 3.00 34.00 128.50 216.00 596.00 558.00 356.00 89.50 0.00 0.00 1981.00
1954 0.00 0.00 0.00 6.50 202.00 221.50 540.50 447.00 241.50 25.00 0.00 0.00 1684.00
1955 0.00 0.00 0.00 2.00 58.50 379.00 507.50 568.00 291.00 30.00 0.00 0.00 1836.00
1956 0.00 0.00 0.00 82.00 291.50 271.50 669.50 546.50 320.00 47.00 0.00 0.00 2228.00
1957 0.00 0.00 0.00 47.00 292.00 362.00 541.00 482.00 395.00 23.00 0.00 0.00 2142.00
1958 0.00 0.50 0.00 6.00 397.50 467.50 711.50 733.00 278.50 93.50 0.00 0.00 2688.00
1959 0.00 0.00 0.00 26.00 86.50 351.50 639.00 445.50 169.00 14.50 1.50 0.00 1733.50
1960 0.00 0.00 14.00 40.50 84.00 364.00 776.00 467.50 309.50 67.00 0.00 0.00 2122.50
1961 0.00 0.00 1.00 18.50 131.50 499.00 678.00 744.00 198.50 59.50 0.00 0.00 2330.00
1962 0.00 0.00 0.00 72.00 70.50 338.50 563.00 477.00 323.50 28.00 0.00 0.00 1872.50
1963 0.00 0.00 3.50 16.50 199.50 351.50 517.50 591.00 480.00 130.00 0.00 0.00 2289.50
1964 0.00 0.00 7.00 4.50 135.50 311.50 561.50 396.50 161.00 44.00 0.00 0.00 1621.50
1965 0.00 0.00 0.00 30.50 125.00 338.50 624.00 557.00 145.50 107.00 0.00 0.00 1927.50
1966 0.00 0.00 7.00 23.00 216.50 274.00 563.00 562.00 436.00 48.50 0.00 0.00 2130.00
1967 0.00 0.00 0.00 0.00 135.00 404.50 638.50 757.50 459.50 46.50 0.00 0.00 2441.50
1968 0.00 0.00 1.50 24.50 141.50 333.50 652.50 466.00 288.50 3.00 0.00 0.00 1911.00
1969 0.00 0.00 0.50 21.00 257.50 454.00 537.50 528.50 293.50 8.50 0.00 0.00 2101.00
1970 0.00 0.00 0.00 0.00 179.50 484.00 697.50 625.00 161.00 49.50 0.00 0.00 2196.50
1971 3.00 0.00 0.00 14.00 225.00 247.50 612.00 745.50 170.50 66.00 0.00 0.00 2083.50
1972 0.00 0.00 8.00 5.00 232.00 358.50 560.00 652.50 203.00 51.00 0.50 0.00 2070.50
1973 0.00 0.00 0.00 26.00 222.50 362.00 657.00 590.00 292.00 33.00 0.00 0.00 2182.50
1974 0.00 0.00 0.00 20.00 85.50 481.50 553.00 562.50 314.00 33.50 0.00 0.00 2050.00
1975 0.00 0.00 0.00 0.00 125.50 276.50 693.00 437.00 329.00 55.50 12.00 0.00 1928.50
1976 0.00 0.00 0.00 20.00 150.00 262.00 583.00 478.00 402.00 67.00 0.00 0.00 1962.00
1977 0.00 0.00 0.00 133.00 86.50 450.50 527.50 655.50 176.00 16.00 0.00 0.00 2045.00
1978 0.00 0.00 9.50 27.50 84.50 381.50 565.00 491.50 212.50 42.50 0.00 0.00 1814.50
1979 0.00 0.00 0.00 40.00 164.00 380.50 635.50 618.00 392.50 122.00 0.00 0.00 2352.50
1980 0.00 0.00 0.00 118.00 191.00 242.50 594.00 436.00 254.50 83.50 2.00 4.00 1925.50
1981 0.00 0.00 0.00 51.00 113.00 210.00 466.00 665.00 313.00 21.00 0.00 0.00 1839.00
1982 0.00 0.50 0.00 19.50 159.00 494.00 544.50 613.50 286.50 34.50 0.00 0.00 2152.00
1983 0.00 0.00 3.50 36.00 235.50 356.50 478.50 690.50 239.00 45.00 4.50 0.00 2089.00
1984 0.00 0.00 0.00 25.50 72.00 279.00 590.50 621.50 232.00 82.00 0.00 0.00 1902.50
1985 0.00 0.00 0.00 55.50 228.50 352.00 773.50 462.00 130.50 19.00 0.50 0.00 2021.50
1986 0.00 4.50 6.00 18.00 224.50 485.50 434.00 700.00 155.50 42.50 0.00 0.00 2070.50
1987 0.00 0.00 6.00 105.00 237.00 452.00 515.00 502.50 381.50 85.50 1.50 0.00 2286.00
1988 0.00 0.00 0.00 75.00 170.50 333.00 579.00 569.50 287.00 186.00 2.00 0.00 2202.00
1989 0.00 0.00 0.00 49.00 121.00 428.00 580.00 459.00 302.50 40.00 8.00 0.00 1987.50
1990 0.00 0.00 3.50 53.50 114.50 324.00 631.00 573.00 457.00 16.00 3.00 0.00 2175.50
1991 0.00 0.00 2.50 21.00 79.50 197.00 579.00 626.50 355.00 93.00 0.00 0.00 1953.50
1992 0.00 0.00 10.00 74.50 288.50 539.00 549.50 610.00 233.00 85.00 0.00 0.00 2389.50
1993 0.00 0.00 0.00 3.50 321.50 304.50 315.50 439.00 272.50 86.50 0.00 0.00 1743.00
1994 0.00 0.00 6.00 63.50 209.50 323.00 712.00 601.50 402.00 31.50 0.00 0.00 2349.00
1995 0.00 7.00 0.00 17.50 217.50 310.50 552.50 429.00 338.00 12.50 1.50 0.00 1886.00
1996 0.00 0.00 0.00 34.00 72.00 315.00 619.50 559.00 204.50 69.00 0.00 0.00 1873.00
1997 0.00 0.00 3.00 10.00 227.00 298.00 544.00 649.00 357.00 39.50 0.00 0.00 2127.50
1998 0.00 0.00 6.50 69.00 204.50 375.00 783.00 671.50 452.50 33.50 0.00 0.00 2595.50
1999 0.00 0.00 4.50 26.00 112.00 302.50 501.00 629.00 288.00 36.00 15.00 0.00 1914.00
2000 0.00 0.00 0.00 44.50 137.50 332.00 552.50 544.00 207.00 32.00 0.00 0.00 1849.50
2001 0.00 0.00 0.00 36.50 203.00 270.00 570.50 653.00 398.00 27.50 3.00 0.00 2161.50
2002 0.00 0.00 0.00 17.50 132.00 379.00 661.00 509.00 257.50 15.00 0.00 0.00 1971.00
2003 0.00 0.00 8.50 22.00 164.50 408.00 712.50 628.50 357.00 151.50 0.00 0.00 2452.50
2004 0.00 0.00 9.00 49.50 145.00 408.00 689.00 650.50 242.50 84.00 0.00 0.00 2277.50
2005 0.00 0.00 2.00 69.50 213.50 307.00 623.00 607.00 224.50 40.50 0.00 0.00 2087.00
2006 0.00 0.00 0.00 29.00 221.00 406.00 734.50 585.50 341.00 45.50 6.00 0.00 2368.50
2007 0.00 0.00 10.50 37.00 217.50 365.50 794.00 571.50 294.00 34.00 0.00 0.00 2324.00
2008 0.00 0.00 0.00 18.00 238.50 333.00 629.00 579.00 332.00 58.00 0.50 0.00 2188.00
2009 0.00 0.00 0.00 32.50 203.00 396.00 685.50 630.00 424.00 11.50 0.00 0.00 2382.50
2010 0.00 0.00 0.50 54.00 111.00 274.50 585.50 573.50 294.00 87.50 1.50 0.00 1982.00
2011 0.00 0.00 0.00 0.00 108.00 270.50 517.50 643.50 450.00 49.00 0.00 0.00 2038.50
2012 0.00 0.00 0.00 76.50 161.00 296.50 685.50 670.50 402.50 77.50 6.50 0.00 a 2376.50
2013 0.00 0.00 6.00 5.00 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 6.00
Period of Record Statistics
MEAN 0.04 0.25 3.31 47.88 191.44 364.57 618.14 579.54 297.87 64.49 1.50 0.13 2169.98
S.D. 0.30 1.09 5.28 39.61 75.94 79.35 86.78 83.85 84.92 39.90 3.46 0.65 244.44
SKEW 8.54 5.03 2.24 1.51 0.62 0.39 -0.23 -0.14 0.13 0.64 3.68 5.37 0.32
MAX 3.00 7.00 26.50 211.00 397.50 596.00 803.50 782.00 533.50 186.00 24.50 4.00 2847.50
MIN 0.00 0.00 0.00 0.00 58.50 197.00 315.50 365.00 130.50 3.00 0.00 0.00 1621.50
NO YRS 124 124 124 123 123 123 123 124 124 124 124 124 123