WINTHROP 1 WSW, WASHINGTON

Monthly Total Growing Degree Days

(459376)

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
1906 0.00 z 0.00 z 0.00 0.00 z 172.00 72.00 v 825.00 580.00 305.50 0.00 z 0.00 0.00 z 1882.50
1907 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 301.73 d 0.00 z 0.00 z 0.00 z 301.73
1908 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
1909 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 v 0.00 j 0.00
1910 0.00 a 0.00 0.00 0.00 x 0.00 z 37.50 z 77.50 z 83.50 w 0.00 z 18.00 y 0.00 p 0.00 0.00
1911 0.00 c 0.00 a 9.50 73.00 152.00 26.00 z 0.00 z 0.00 z 83.50 h 19.38 c 0.00 a 0.00 253.88
1912 0.00 0.00 2.00 4.00 202.02 a 459.50 564.89 d 403.53 b 166.00 15.00 0.00 0.00 1816.94
1913 0.00 a 0.00 0.00 55.18 b 157.00 359.48 a 517.18 a 547.50 218.50 15.50 0.00 0.00 1870.34
1914 0.00 0.00 0.00 62.50 204.00 325.50 609.00 596.50 187.00 45.00 0.00 0.00 2029.50
1915 0.00 0.00 0.00 87.00 136.50 339.50 524.00 698.00 245.50 30.50 0.00 0.00 2061.00
1916 0.00 0.00 0.00 22.00 101.02 b 327.00 420.50 552.50 255.50 45.00 0.00 0.00 1723.52
1917 0.00 0.00 0.00 0.00 171.50 236.00 632.92 a 788.50 285.50 125.00 0.00 a 0.00 a 2239.42
1918 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 467.50 155.00 0.00 0.00 622.50
1919 0.00 0.00 0.00 57.50 122.50 304.00 169.00 v 662.00 302.50 0.00 w 0.00 0.00 d 1448.50
1920 0.00 r 0.00 f 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 r 0.00 d 0.00
1921 0.00 z 0.00 z 0.00 z 0.00 z 196.00 354.50 536.50 560.50 112.50 65.50 0.00 0.00 1825.50
1922 0.00 0.00 0.00 9.00 132.50 501.00 660.00 566.00 319.00 72.00 0.00 0.00 2259.50
1923 0.00 0.00 0.00 32.00 143.50 337.00 620.00 582.50 348.50 78.50 0.00 0.00 2142.00
1924 0.00 0.00 0.00 11.50 307.00 392.00 641.00 555.00 285.00 11.00 0.00 0.00 a 2202.50
1925 0.00 0.00 0.00 48.50 234.50 396.00 693.00 520.00 272.00 4.50 0.00 0.00 2168.50
1926 0.00 0.00 11.50 144.50 149.50 485.50 705.50 556.00 150.00 27.50 0.00 0.00 2230.00
1927 0.00 0.00 0.00 40.50 108.00 380.50 603.00 572.00 165.00 10.50 0.00 0.00 1879.50
1928 0.00 0.00 0.00 25.50 269.00 365.50 643.00 538.00 239.50 12.50 0.00 0.00 2093.00
1929 0.00 0.00 0.00 24.50 167.50 333.50 533.00 554.50 191.50 27.90 a 0.00 0.00 1832.40
1930 0.00 0.00 9.00 45.50 120.00 257.00 695.50 537.50 261.50 39.00 0.00 0.00 a 1965.00
1931 0.00 0.00 0.00 50.50 236.00 375.50 630.00 573.00 225.50 31.50 0.00 0.00 2122.00
1932 0.00 0.00 0.00 56.00 164.00 467.00 481.00 549.50 273.00 55.00 0.00 0.00 2045.50
1933 0.00 0.00 0.00 59.00 84.00 308.00 567.50 561.50 158.50 47.50 0.00 0.00 1786.00
1934 0.00 0.00 0.50 140.69 a 219.50 409.50 555.50 582.50 213.00 67.00 0.00 0.00 2188.19
1935 0.00 0.00 0.00 13.50 146.00 346.00 534.50 466.00 304.00 62.50 0.00 0.00 1872.50
1936 0.00 a 0.00 0.00 107.07 a 284.50 355.50 577.00 577.00 210.00 55.00 0.00 0.00 a 2166.07
1937 0.00 a 0.00 b 0.00 9.00 141.00 342.00 637.00 424.50 312.50 31.00 0.00 0.00 a 1897.00
1938 0.00 z 0.00 q 0.00 z 0.00 z 182.00 437.00 665.50 468.00 403.00 36.50 0.00 0.00 a 2192.00
1939 0.00 0.00 a 0.00 e 57.32 b 182.50 297.00 598.00 586.50 289.50 46.00 0.00 0.00 a 2056.82
1940 0.00 a 0.00 0.00 40.50 227.00 448.50 593.00 545.00 385.50 66.50 0.00 0.00 a 2306.00
1941 0.00 0.00 15.00 96.50 163.50 357.50 642.50 487.50 133.00 13.50 0.00 0.00 1909.00
1942 0.00 a 0.00 0.00 37.50 114.00 265.00 559.50 593.00 328.00 70.00 0.00 0.00 a 1967.00
1943 0.00 0.00 0.00 66.50 87.26 d 251.00 558.50 355.00 h 325.00 111.00 0.00 0.00 1399.26
1944 0.00 b 0.00 0.00 36.00 174.50 369.50 565.00 474.50 318.50 77.00 0.00 0.00 2015.00
1945 0.00 d 0.00 0.00 9.50 i 170.50 a 305.50 591.07 a 560.00 211.50 115.73 a 0.00 0.00 a 1954.30
1946 0.00 0.00 0.00 f 37.00 228.50 236.50 507.00 510.00 215.00 7.00 0.00 a 0.00 1741.00
1947 0.00 0.00 0.00 52.50 b 270.00 321.50 525.40 b 0.00 z 258.00 60.50 0.00 0.00 1487.90
1948 0.00 0.00 0.00 7.00 141.57 a 448.45 a 451.57 a 402.48 a 235.80 e 20.84 b 0.00 0.00 1707.71
1949 0.00 0.00 0.00 a 46.50 283.50 323.50 539.92 a 498.50 287.50 1.50 0.00 a 0.00 1980.92
1950 0.00 0.00 0.00 4.00 137.50 345.52 a 562.13 a 553.35 a 323.04 b 8.00 0.00 0.00 a 1933.54
1951 0.00 a 0.00 0.00 16.50 172.50 342.50 584.35 a 530.50 289.00 75.95 a 0.00 0.00 2011.30
1952 0.00 0.00 0.00 68.50 207.50 322.00 561.00 541.50 349.50 110.50 0.00 0.00 2160.50
1953 0.00 0.00 a 0.00 27.50 147.50 219.50 515.00 497.50 288.00 45.50 0.00 0.00 1740.50
1954 0.00 0.00 a 0.00 d 7.00 174.63 a 190.34 a 446.50 412.00 204.50 6.72 a 0.00 0.00 1441.69
1955 0.00 0.00 0.00 2.50 62.00 344.00 481.03 b 484.50 262.50 4.50 0.00 a 0.00 a 1641.03
1956 0.00 0.00 0.00 a 45.00 254.00 255.50 598.00 533.00 227.07 a 27.00 0.00 0.00 1939.57
1957 0.00 0.00 0.00 l 35.00 312.00 374.00 485.50 374.50 348.50 34.50 0.00 0.00 1964.00
1958 0.00 0.00 0.00 9.50 336.00 490.50 670.00 652.50 220.00 72.00 0.00 0.00 2450.50
1959 0.00 0.00 0.00 25.50 136.50 315.50 555.00 392.31 b 163.00 17.00 0.00 0.00 1604.81
1960 0.00 0.00 0.00 23.00 90.00 315.50 661.00 452.50 217.50 43.50 0.00 0.00 1803.00
1961 0.00 0.00 0.00 29.50 167.00 451.50 628.00 643.50 185.50 30.00 0.00 0.00 2135.00
1962 0.00 a 0.00 0.00 53.50 103.00 303.50 498.00 436.50 269.50 16.50 0.00 0.00 1680.50
1963 0.00 0.00 0.00 9.64 b 182.00 362.00 472.50 541.00 377.50 76.50 0.00 0.00 2021.14
1964 0.00 0.00 a 0.00 8.00 132.50 306.00 0.00 z 122.50 t 171.50 36.00 0.00 0.00 654.00
1965 0.00 0.00 0.00 27.00 118.50 352.50 540.50 507.00 114.00 20.50 0.00 0.00 1680.00
1966 0.00 0.00 0.00 8.00 199.00 238.00 266.50 i 346.50 h 364.00 16.00 0.00 0.00 825.00
1967 0.00 0.00 0.00 0.00 113.00 388.00 522.00 595.00 387.00 20.00 0.00 0.00 2025.00
1968 0.00 0.00 e 0.00 z 19.50 94.60 b 268.93 b 558.50 371.00 226.50 13.00 0.00 0.00 b 1552.03
1969 0.00 a 0.00 0.00 c 11.00 222.50 488.50 462.93 a 420.50 223.27 d 3.21 b 0.00 b 0.00 a 1831.91
1970 0.00 0.00 0.00 z 0.00 166.50 475.50 624.65 a 524.50 151.50 34.50 0.00 0.00 c 1977.15
1971 0.00 0.00 0.00 a 18.50 234.00 0.00 z 568.52 c 620.52 a 88.27 d 51.48 c 0.00 a 0.00 c 1581.29
1972 0.00 0.00 f 0.00 5.00 197.50 0.00 z 425.39 d 517.38 b 127.24 a 23.25 e 0.00 a 0.00 z 1295.76
1973 0.00 b 0.00 0.00 0.00 z 0.00 z 0.00 z 586.50 543.00 286.50 7.75 a 0.00 0.00 1423.75
1974 0.00 a 0.00 0.00 b 0.00 z 79.00 405.00 463.00 535.50 297.50 22.00 0.00 z 0.00 1802.00
1975 0.00 0.00 0.00 9.50 141.00 304.00 649.50 432.00 273.50 38.50 0.00 0.00 1848.00
1976 0.00 a 0.00 0.00 11.00 155.50 252.00 515.50 438.50 321.50 65.50 0.00 0.00 c 1759.50
1977 0.00 b 0.00 0.00 101.50 103.50 472.00 539.00 664.00 188.00 4.50 0.00 b 0.00 a 2072.50
1978 0.00 0.00 2.00 39.00 123.00 408.00 596.50 478.50 177.00 23.00 0.00 a 0.00 1847.00
1979 0.00 0.00 0.00 b 28.00 182.50 390.00 608.00 438.00 g 286.00 86.05 b 0.00 a 0.00 d 1580.55
1980 0.00 0.00 0.00 59.00 166.22 b 248.00 500.00 435.50 233.00 54.00 0.00 0.00 1695.72
1981 0.00 0.00 0.50 50.00 143.50 201.50 466.50 598.00 266.50 3.50 0.00 0.00 1730.00
1982 0.00 0.00 0.00 6.50 108.00 0.00 z 462.50 470.50 224.50 20.50 0.00 0.00 1292.50
1983 0.00 0.00 0.00 24.00 197.00 312.50 387.50 532.50 157.50 18.50 0.00 0.00 1629.50
1984 0.00 0.00 0.00 11.50 81.50 278.00 544.00 531.50 134.00 44.50 0.00 0.00 1625.00
1985 0.00 0.00 0.00 20.50 226.00 341.50 669.00 469.00 136.00 20.00 0.00 0.00 1882.00
1986 0.00 0.00 2.00 24.00 221.00 490.50 466.50 680.00 186.00 40.50 0.00 0.00 2110.50
1987 0.00 a 0.00 0.00 a 105.50 243.00 456.50 541.50 524.50 383.00 85.50 0.00 0.00 2339.50
1988 0.00 0.00 0.00 83.00 187.50 346.00 555.50 533.50 291.00 140.50 0.00 0.00 2137.00
1989 0.00 0.00 0.00 60.00 153.50 447.50 537.50 458.50 293.00 54.00 0.00 0.00 2004.00
1990 0.00 0.00 5.00 66.50 130.00 317.50 0.00 z 574.00 390.00 16.00 1.50 0.00 1500.50
1991 0.00 0.00 0.00 30.50 143.00 264.00 550.50 598.50 367.00 79.00 0.00 0.00 2032.50
1992 0.00 0.00 4.00 67.50 274.50 538.50 535.50 548.50 211.50 67.00 0.00 0.00 2247.00
1993 0.00 0.00 0.00 12.50 333.00 309.50 386.00 456.50 294.50 88.00 0.00 0.00 1880.00
1994 0.00 0.00 5.00 85.50 220.50 312.00 647.00 0.00 z 376.50 32.00 0.00 0.00 1678.50
1995 0.00 0.00 0.00 19.00 250.50 345.00 571.50 373.50 360.50 14.50 0.00 0.00 1934.50
1996 0.00 0.00 0.00 33.50 100.00 308.50 576.50 532.50 228.50 52.50 0.00 0.00 1832.00
1997 0.00 0.00 0.00 11.00 221.00 286.00 472.00 555.50 314.50 24.50 0.00 0.00 1884.50
1998 0.00 0.00 0.00 44.00 268.00 373.50 679.00 629.00 413.50 38.50 0.00 0.00 2445.50
1999 0.00 0.00 0.00 41.50 120.50 300.00 487.00 595.00 238.50 19.00 0.00 0.00 1801.50
2000 0.00 0.00 0.00 53.00 160.50 357.50 498.00 521.00 250.50 31.50 0.00 0.00 1872.00
2001 0.00 0.00 1.00 35.00 217.00 288.50 579.50 596.00 339.50 17.50 0.00 0.00 2074.00
2002 0.00 0.00 0.00 25.50 143.00 413.00 600.50 524.00 274.00 40.00 0.00 0.00 2020.00
2003 0.00 0.00 7.50 30.50 167.00 431.50 647.00 598.50 336.50 134.00 0.00 0.00 2352.50
2004 0.00 0.00 1.50 64.00 153.50 418.00 642.00 0.00 z 226.00 69.50 0.00 0.00 1574.50
2005 0.00 0.00 2.50 75.00 234.50 336.50 558.00 580.50 230.50 47.00 0.00 z 0.00 2064.50
2006 0.00 0.00 0.00 40.00 179.50 400.00 675.50 520.00 310.50 68.50 0.00 0.00 2194.00
2007 0.00 0.00 1.50 30.00 205.00 346.00 700.00 504.50 285.50 13.00 0.00 0.00 2085.50
2008 0.00 0.00 0.00 19.50 276.50 337.00 579.00 522.50 249.50 44.50 1.00 0.00 2029.50
2009 0.00 0.00 0.00 32.00 180.50 409.00 633.00 605.00 372.00 29.50 0.00 0.00 2261.00
2010 0.00 0.00 0.00 44.50 96.00 305.50 555.00 508.50 246.00 81.00 0.00 0.00 1836.50
2011 0.00 0.00 0.00 0.00 88.50 291.00 459.00 580.00 348.00 32.03 a 0.00 0.00 a 1798.53
2012 0.00 0.00 0.00 55.00 147.00 251.00 593.50 573.50 313.50 53.00 0.52 a 0.00 1987.02
2013 0.00 0.00 0.00 2.50 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 0.00
Period of Record Statistics
MEAN 0.00 0.00 0.82 38.50 175.27 350.10 566.02 533.90 263.30 43.82 0.03 0.00 1972.48
S.D. 0.00 0.00 2.51 30.17 60.72 74.60 77.79 75.01 77.20 32.80 0.19 0.00 209.34
SKEW 0.00 0.00 3.76 1.18 0.54 0.30 0.16 0.12 0.01 1.16 6.62 0.00 0.05
MAX 0.00 0.00 15.00 144.50 336.00 538.50 825.00 788.50 467.50 155.00 1.50 0.00 2450.50
MIN 0.00 0.00 0.00 0.00 62.00 190.34 386.00 371.00 88.27 1.50 0.00 0.00 1441.69
NO YRS 101 100 98 95 100 95 96 93 102 100 100 102 77