SEATTLE TCOMA WSCMO AP, WASHINGTON

Monthly Total Growing Degree Days

(457473)

Base Temperature = 50 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1931 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 15.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1932 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
1933 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
1934 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
1935 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
1936 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
1937 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
1938 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
1939 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
1940 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
1941 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
1942 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
1943 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
1944 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
1945 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
1946 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
1947 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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 282.00 f 383.00 346.50 229.00 59.50 0.00 0.00 1018.00
1949 0.00 0.00 4.50 43.50 236.50 271.50 390.00 424.50 322.50 35.00 36.50 1.50 1766.00
1950 0.00 0.00 1.00 12.00 90.50 305.50 422.50 426.50 240.00 46.50 17.00 8.00 1569.50
1951 0.00 5.00 0.00 43.50 137.00 333.00 445.00 360.00 271.00 98.00 0.00 0.00 1692.50
1952 0.00 0.00 0.50 28.50 145.50 199.00 415.50 403.00 275.50 143.50 7.00 4.00 1622.00
1953 0.00 0.00 3.00 21.50 104.00 164.00 367.00 394.50 289.50 116.50 15.50 0.00 1475.50
1954 0.00 0.00 0.00 9.00 129.00 188.50 312.50 328.00 260.50 86.00 32.00 0.00 1345.50
1955 0.00 0.00 2.50 5.50 43.50 238.50 311.50 338.50 211.50 55.00 12.50 0.00 1219.00
1956 0.00 0.00 0.00 53.00 215.00 206.50 452.50 400.50 237.00 66.00 0.00 0.00 1630.50
1957 0.00 0.00 1.50 53.00 245.50 310.00 365.00 360.00 381.00 70.00 0.50 1.00 1787.50
1958 2.00 11.50 2.00 34.00 325.50 417.50 582.50 512.50 294.50 131.00 5.50 8.50 2327.00
1959 0.00 0.50 1.00 42.00 126.50 286.50 497.50 380.50 222.50 83.50 8.00 0.00 1648.50
1960 7.00 0.00 8.00 58.50 98.00 285.00 518.50 377.50 240.00 106.50 4.50 1.50 1705.00
1961 3.50 3.50 6.00 18.00 139.50 403.00 528.00 569.00 261.50 88.00 0.00 0.00 2020.00
1962 0.00 8.00 5.50 50.50 51.50 299.00 419.00 372.50 288.00 96.00 13.00 1.50 1604.50
1963 0.00 39.50 7.00 24.00 252.00 295.50 383.00 451.00 405.50 163.50 0.00 2.00 2023.00
1964 0.00 0.00 13.50 4.50 129.00 237.50 418.50 390.00 254.50 124.00 2.00 1.00 1574.50
1965 0.00 2.50 31.50 52.50 83.00 323.50 550.00 487.50 249.50 200.50 48.00 1.00 2029.50
1966 0.00 8.00 20.50 41.50 149.00 261.50 375.50 448.50 343.50 85.50 5.50 0.00 1739.00
1967 1.50 0.00 0.00 4.50 174.50 380.50 509.50 653.50 470.00 153.50 20.00 3.00 2370.50
1968 10.50 30.50 30.00 41.50 229.00 320.50 527.00 423.00 272.00 63.00 11.50 0.00 1958.50
1969 0.00 0.00 18.00 27.00 261.00 427.50 454.50 434.00 328.00 100.00 26.50 1.00 2077.50
1970 0.50 15.50 4.00 4.50 153.50 379.50 462.00 449.00 258.50 85.00 47.00 0.00 1859.00
1971 1.00 4.00 0.00 41.50 154.00 176.50 481.00 549.00 229.50 105.50 3.50 0.00 1745.50
1972 0.50 1.00 29.50 25.00 258.50 301.00 495.50 517.50 185.50 59.00 7.00 5.00 1885.00
1973 2.00 1.00 0.00 24.00 203.50 278.50 455.50 358.50 355.00 81.50 5.50 1.00 1766.00
1974 4.50 0.00 13.50 41.00 158.50 378.50 433.00 452.00 430.50 93.00 5.00 1.50 2011.00
1975 0.50 0.00 0.00 6.50 154.00 319.50 542.50 409.50 388.50 85.00 21.50 8.50 1936.00
1976 2.50 0.00 0.00 69.50 198.50 299.50 492.00 436.50 376.00 157.00 40.00 10.00 2081.50
1977 3.00 21.00 2.00 133.00 139.50 390.00 469.00 572.00 267.00 81.00 7.00 5.00 2089.50
1978 2.00 13.50 31.50 47.00 143.50 429.00 490.00 478.00 264.00 155.00 5.50 0.00 2059.00
1979 0.00 1.50 35.00 77.00 222.50 374.50 539.00 432.00 378.00 137.50 12.00 1.50 2210.50
1980 0.00 11.00 3.50 77.00 134.00 224.00 426.50 369.50 288.00 135.00 43.50 23.00 1735.00
1981 18.00 6.00 28.00 60.50 152.50 225.00 411.50 560.00 330.50 46.50 26.00 0.00 1864.50
1982 0.00 2.50 0.00 30.00 150.00 393.50 395.50 467.00 316.50 110.00 1.50 1.00 1867.50
1983 3.50 13.50 19.50 71.00 242.50 296.50 410.50 484.00 249.00 66.50 29.00 0.00 1885.50
1984 8.50 0.00 17.00 28.00 96.00 263.50 464.50 462.50 296.00 84.00 2.50 0.00 1722.50
1985 0.00 0.00 0.50 41.00 165.50 301.00 576.00 469.00 243.00 76.00 8.00 0.00 1880.00
1986 0.50 19.50 29.00 23.50 189.00 379.00 363.50 570.50 273.00 139.50 4.00 0.00 1991.00
1987 3.00 17.00 35.50 92.50 217.00 376.50 439.50 500.00 375.50 183.00 42.50 0.00 2282.00
1988 0.00 5.50 5.00 68.00 165.00 287.50 474.00 476.00 317.50 177.50 10.50 3.00 1989.50
1989 0.00 0.00 3.50 128.50 188.00 395.50 448.50 472.50 421.00 122.50 18.50 6.50 2205.00
1990 0.00 2.00 13.00 78.00 147.00 295.00 557.50 534.50 401.00 57.50 26.50 0.00 2112.00
1991 0.50 19.00 3.00 37.50 136.50 265.00 519.50 513.50 385.00 159.00 22.00 2.00 2062.50
1992 11.50 24.50 34.50 131.50 305.00 448.00 516.50 520.00 299.00 144.50 4.00 0.00 2439.00
1993 0.00 11.00 14.00 43.00 298.00 315.50 345.00 479.50 355.00 168.00 0.50 6.50 2036.00
1994 2.00 3.00 47.00 88.00 252.50 316.50 554.50 537.00 430.00 95.00 0.00 5.00 2330.50
1995 12.50 13.50 43.50 84.50 313.00 380.50 527.00 400.50 419.50 101.50 40.00 4.50 2340.50
1996 1.00 3.50 22.50 75.50 110.00 312.50 553.00 509.00 276.00 100.50 8.00 1.00 1972.50
1997 1.50 0.00 6.00 28.00 253.50 282.50 447.50 549.50 364.50 71.50 22.50 0.00 2027.00
1998 4.00 7.50 27.50 66.50 152.50 296.00 545.00 519.50 394.00 103.50 7.00 2.00 2125.00
1999 0.00 0.00 8.50 51.00 94.50 244.00 385.00 457.50 323.50 82.00 26.50 0.00 1672.50
2000 0.00 0.00 1.50 65.00 128.00 317.00 442.50 417.00 305.00 98.00 0.00 0.00 1774.00
2001 1.50 0.00 6.00 37.50 172.50 228.00 385.00 458.00 292.50 67.00 16.50 0.00 1664.50
2002 5.00 0.00 0.00 28.50 124.50 333.00 463.50 471.00 317.50 86.50 20.50 3.00 1853.00
2003 2.50 0.00 20.00 30.00 164.50 384.00 552.50 508.00 377.50 154.50 0.50 0.00 2194.00
2004 0.50 2.00 29.00 106.50 216.00 400.00 562.00 529.50 265.00 124.50 5.00 4.50 2244.50
2005 22.00 3.50 36.50 85.00 254.50 297.50 482.00 519.00 285.00 130.00 0.00 22.00 2137.00
2006 7.00 1.50 7.50 59.00 216.00 395.00 335.50 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 686.00
Period of Record Statistics
MEAN 2.52 5.73 12.64 49.17 175.67 312.63 460.96 460.16 311.72 105.08 13.88 2.59 1916.41
S.D. 4.50 8.57 13.49 31.19 65.00 68.63 69.20 70.00 65.72 38.56 13.88 4.60 262.45
SKEW 2.59 1.91 0.86 0.85 0.36 -0.08 -0.15 0.18 0.41 0.45 0.99 3.00 -0.21
MAX 22.00 39.50 47.00 133.00 325.50 448.00 582.50 653.50 470.00 200.50 48.00 23.00 2439.00
MIN 0.00 0.00 0.00 4.50 43.50 164.00 311.50 328.00 185.50 35.00 0.00 0.00 1219.00
NO YRS 58 58 58 58 58 58 58 58 58 58 58 58 57