SEDRO WOOLLEY, WASHINGTON

Monthly Total Growing Degree Days

(457507)

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
1896 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 424.46 e 166.50 105.00 3.00 13.50 712.46
1897 1.00 5.50 4.00 95.00 269.50 385.00 369.50 505.00 244.14 a 79.50 10.50 4.50 1973.14
1898 0.00 28.00 2.00 84.50 263.50 346.50 414.50 469.00 315.50 79.00 1.50 0.00 2004.00
1899 0.00 0.00 6.00 41.50 92.00 205.00 0.00 z 251.50 h 344.00 44.50 g 61.50 10.50 760.50
1900 18.50 0.00 41.00 j 72.00 114.00 f 283.80 e 354.00 291.50 196.00 49.50 2.50 21.50 1289.30
1901 0.00 11.50 5.00 33.50 156.50 165.50 266.17 b 491.87 a 217.00 181.00 27.50 0.00 1555.54
1902 0.00 z 10.50 13.43 a 52.50 182.50 264.50 358.05 a 218.50 i 162.00 98.50 2.00 1.50 1145.48
1903 0.00 0.00 4.00 27.00 127.50 337.00 333.50 375.00 196.00 100.50 32.50 2.50 1535.50
1904 0.00 0.00 0.00 101.00 134.33 a 189.50 h 399.00 306.50 217.50 91.50 27.00 0.00 1276.83
1905 0.00 13.00 33.50 73.00 125.00 0.00 z 422.00 338.00 231.00 18.00 18.00 0.00 1271.50
1906 0.00 0.00 31.50 83.50 159.00 291.50 490.00 361.50 209.00 94.50 8.00 1.00 1729.50
1907 0.00 0.00 0.00 15.00 198.40 a 253.89 c 404.00 319.30 a 208.00 73.00 9.50 0.00 z 1481.09
1908 0.00 0.00 0.00 95.56 c 168.00 176.50 g 458.50 372.50 210.00 80.50 85.50 0.00 1470.56
1909 0.00 0.00 0.00 z 18.50 122.00 333.50 348.00 321.00 240.00 100.00 1.50 0.00 c 1484.50
1910 0.00 c 0.00 a 73.50 158.00 349.00 294.50 386.50 328.50 264.50 89.00 0.50 0.50 1944.50
1911 0.00 0.00 6.50 19.00 130.00 230.50 426.00 339.50 178.97 a 51.50 0.00 0.00 1381.97
1912 2.50 0.50 0.00 33.00 228.50 292.50 390.00 341.00 194.50 24.00 14.00 0.00 1520.50
1913 0.00 0.00 0.00 54.00 113.00 268.50 364.00 382.00 214.50 34.50 10.00 0.00 1440.50
1914 2.50 0.00 19.00 65.50 248.50 356.38 a 467.07 a 381.50 153.50 116.00 8.65 d 0.00 1818.60
1915 0.00 7.00 33.50 96.21 a 248.50 409.00 509.00 0.00 z 235.50 86.50 0.00 0.00 1625.21
1916 0.00 2.00 3.50 58.00 156.50 330.00 409.50 432.50 220.50 13.50 0.00 0.00 1626.00
1917 0.00 0.00 0.00 13.00 139.50 283.50 478.50 446.50 240.50 82.00 56.00 10.50 1750.00
1918 6.00 0.00 16.50 38.00 90.00 291.00 380.00 362.00 282.00 104.00 1.00 0.00 1570.50
1919 0.00 0.00 19.50 45.50 126.50 175.00 309.50 343.50 240.50 31.00 34.00 14.50 1339.50
1920 0.00 0.00 11.50 16.00 61.00 257.50 406.50 385.50 205.00 46.50 9.00 0.00 1398.50
1921 0.00 7.00 4.50 35.00 113.50 291.50 304.00 344.00 182.50 62.50 25.50 1.50 1371.50
1922 0.00 0.00 2.50 13.00 152.50 294.50 339.50 337.50 247.00 97.50 1.50 2.30 d 1487.80
1923 1.00 0.00 7.00 58.50 154.00 293.50 438.50 459.50 282.50 150.50 19.00 3.00 1867.00
1924 6.50 7.00 0.00 59.00 188.00 265.00 345.00 347.00 228.62 a 100.75 c 2.00 2.50 1551.37
1925 0.00 3.00 3.00 53.50 213.50 259.00 389.00 349.00 234.00 19.00 16.00 7.50 1546.50
1926 0.00 2.50 38.00 130.00 204.00 322.50 401.50 356.00 167.00 139.50 21.50 0.00 1782.50
1927 0.00 0.00 0.00 43.50 86.50 307.00 393.50 380.94 e 232.50 116.00 2.50 0.00 1562.44
1928 6.50 3.00 35.00 54.50 206.50 277.50 409.00 320.00 176.50 54.50 14.50 0.00 a 1557.50
1929 0.00 0.00 0.00 0.00 z 127.50 248.00 356.00 378.50 237.00 154.50 0.00 1.50 1503.00
1930 0.00 11.50 13.00 m 106.07 b 97.00 258.00 331.50 377.00 218.50 44.43 a 0.00 n 0.00 1444.00
1931 15.00 0.00 19.50 94.00 186.00 261.50 363.50 327.50 272.00 77.00 11.00 0.00 1627.00
1932 0.00 13.50 7.50 66.00 141.50 278.28 a 259.50 355.50 216.50 98.50 28.50 0.00 1465.28
1933 0.00 0.00 3.50 23.00 91.00 176.50 294.00 426.54 d 182.50 82.50 13.00 2.00 1294.54
1934 3.50 9.50 44.50 151.50 216.50 269.00 361.00 403.50 219.50 135.07 c 47.78 c 0.00 1861.35
1935 22.50 16.50 2.87 d 25.50 122.00 297.00 349.50 351.50 265.50 107.00 0.00 3.50 1563.37
1936 0.00 0.00 0.00 102.00 215.50 315.50 345.50 398.00 191.50 132.00 18.00 0.00 1718.00
1937 0.00 0.00 25.00 12.50 107.00 302.00 377.50 350.50 249.00 142.50 17.00 3.50 1586.50
1938 0.00 0.00 4.00 68.00 165.00 292.50 390.50 323.00 307.50 109.00 0.00 3.00 1662.50
1939 0.00 0.00 17.00 83.00 181.00 222.50 361.50 401.50 227.50 78.50 63.50 51.50 1687.50
1940 15.00 0.00 36.50 100.00 213.50 263.50 339.00 374.00 265.50 138.00 0.00 7.00 1752.00
1941 4.50 33.00 65.50 97.50 168.50 283.00 485.50 403.00 204.00 117.00 24.00 2.50 1888.00
1942 0.00 0.00 24.00 77.00 186.00 247.50 470.50 469.50 254.00 148.00 6.00 3.50 1886.00
1943 0.00 d 9.69 b 1.50 93.00 114.00 236.00 399.00 407.00 317.50 134.50 11.00 0.50 1723.69
1944 1.50 1.00 14.50 65.00 274.50 360.00 552.50 469.50 299.50 193.50 27.50 3.00 2262.00
1945 4.50 10.00 4.50 39.50 256.50 302.50 449.00 430.00 236.50 125.00 3.00 0.00 1861.00
1946 0.00 1.00 0.00 26.00 231.50 329.00 421.00 364.00 284.50 17.00 0.00 1.00 1675.00
1947 3.00 2.50 15.00 91.50 208.50 302.50 378.50 350.00 254.00 98.50 0.00 0.00 1704.00
1948 0.00 0.00 4.50 28.50 130.50 337.50 355.50 368.50 202.50 53.50 0.00 0.00 1481.00
1949 0.00 0.00 1.50 53.50 166.00 224.50 322.00 370.50 284.00 25.00 27.50 g 1.00 1448.00
1950 0.00 0.00 0.00 27.00 60.50 338.50 376.50 399.50 225.50 55.50 16.00 14.00 1513.00
1951 0.00 1.00 2.50 34.00 140.00 307.50 426.50 362.00 288.50 116.50 1.50 0.00 1680.00
1952 0.00 4.14 a 2.50 40.00 162.00 187.50 377.00 397.50 294.00 115.50 21.00 0.00 1601.14
1953 4.00 0.00 3.00 61.50 188.50 229.50 396.00 421.00 280.00 108.50 43.50 0.00 b 1735.50
1954 0.00 0.00 0.00 8.50 154.00 195.00 297.00 323.00 271.00 86.50 44.00 5.50 1384.50
1955 0.00 0.00 0.00 11.00 60.00 245.00 291.00 315.00 208.00 65.00 5.50 0.00 1200.50
1956 0.00 0.00 0.00 46.00 213.00 241.00 433.50 397.00 248.00 64.50 1.00 0.00 1644.00
1957 0.00 1.00 1.50 55.50 243.50 300.50 319.50 355.50 329.00 83.50 0.00 5.00 1694.50
1958 1.00 17.50 8.00 31.50 255.50 430.00 557.00 453.50 268.00 106.00 6.50 11.00 2145.50
1959 0.00 0.00 3.50 42.50 164.00 319.00 427.50 328.50 213.00 63.50 5.50 2.50 1569.50
1960 6.50 3.00 19.50 65.00 137.50 265.50 416.50 365.00 206.50 101.00 1.50 3.50 1591.00
1961 9.00 2.50 26.50 30.00 167.00 349.50 460.50 443.50 207.00 58.00 2.00 0.00 1755.50
1962 1.50 9.50 0.50 59.00 76.00 253.50 351.00 376.50 265.00 90.00 8.00 8.50 1499.00
1963 0.00 32.67 a 8.00 27.50 180.00 262.00 339.50 395.50 344.50 153.00 4.50 16.00 1763.17
1964 1.50 0.00 12.00 0.00 116.50 241.00 370.00 349.50 181.00 88.50 0.00 z 0.50 k 1360.00
1965 0.00 a 0.00 1.00 48.50 69.00 229.66 a 402.50 403.53 b 173.00 117.50 42.00 3.50 1490.19
1966 0.00 5.00 16.50 22.00 96.00 222.86 b 302.00 363.22 a 288.50 56.83 a 3.50 10.85 a 1387.26
1967 0.50 0.00 0.00 4.00 137.29 c 347.50 362.70 a 500.00 347.07 a 109.50 10.50 0.00 1819.05
1968 8.00 6.00 30.00 25.00 148.80 a 237.93 a 399.79 b 352.50 225.52 a 39.50 3.50 0.00 1476.54
1969 0.00 0.00 10.50 28.50 222.68 a 389.00 322.92 a 296.05 a 232.24 a 62.00 16.00 0.00 1579.89
1970 0.00 0.00 3.50 5.69 a 97.81 b 318.50 366.00 341.00 a 135.50 28.00 15.00 a 0.00 1311.00
1971 1.50 0.00 0.00 47.00 138.47 a 185.17 a 380.50 469.00 203.00 74.00 0.00 0.00 1498.64
1972 0.00 2.00 16.00 20.00 176.59 c 241.03 a 387.00 408.50 163.50 29.50 6.00 1.50 1451.62
1973 7.50 0.00 0.00 19.50 149.83 a 245.50 367.00 306.26 b 272.00 52.00 6.50 0.00 a 1426.09
1974 3.62 a 0.00 1.50 24.83 a 75.00 264.50 352.00 397.50 369.50 72.50 4.00 1.50 1566.44
1975 0.00 a 0.00 0.00 a 0.50 153.93 b 222.00 407.50 332.00 270.50 74.50 23.50 2.50 1486.93
1976 2.00 0.00 z 0.00 50.50 130.50 186.72 a 368.50 327.50 298.00 73.50 8.50 8.50 1454.22
1977 3.50 4.50 2.50 77.07 a 101.50 282.50 321.00 483.00 203.50 47.02 a 5.50 0.00 1531.59
1978 0.00 7.50 12.50 51.00 121.50 369.00 427.50 414.50 232.00 103.50 3.50 0.00 1742.50
1979 0.00 0.00 b 16.50 52.00 201.50 269.50 447.00 433.50 356.00 112.50 10.50 4.81 b 1903.81
1980 0.00 7.50 3.00 97.00 153.00 239.00 364.00 352.00 255.00 120.00 44.00 26.50 1661.00
1981 18.50 3.50 26.50 48.50 168.50 218.50 378.00 472.00 276.50 33.00 37.00 0.00 1680.50
1982 0.00 2.00 6.00 26.00 129.00 354.50 0.00 z 374.50 295.00 78.00 1.50 0.00 1266.50
1983 1.00 6.50 23.50 65.00 237.50 282.00 369.00 428.00 202.50 43.50 23.50 0.00 1682.00
1984 5.00 2.50 12.00 42.00 102.50 255.50 384.00 412.50 250.50 92.50 5.00 0.00 1564.00
1985 0.00 0.00 0.50 46.50 164.00 276.50 501.50 407.00 188.50 62.50 0.00 0.00 1647.00
1986 9.50 18.00 30.50 20.50 171.50 331.00 317.50 471.00 242.00 94.00 1.00 1.50 1708.00
1987 8.50 9.50 27.50 89.50 168.50 294.50 406.00 409.50 302.00 110.50 46.50 0.00 1872.50
1988 4.50 0.00 5.50 55.50 162.00 260.00 368.00 391.50 243.50 135.00 23.50 2.50 1651.50
1989 0.00 0.00 6.50 96.50 140.50 339.50 355.50 388.00 302.00 106.50 10.00 12.50 1757.50
1990 0.00 0.00 7.50 68.00 155.00 268.50 475.50 487.00 302.50 47.00 32.50 0.00 1843.50
1991 0.00 z 13.00 4.00 37.50 147.00 213.50 425.50 441.00 289.50 101.00 12.50 2.50 1687.00
1992 15.00 18.50 22.00 127.00 233.00 386.00 418.50 433.50 236.00 126.00 1.50 0.00 2017.00
1993 0.00 7.50 6.50 59.00 303.50 295.50 350.00 417.50 253.50 129.00 0.00 0.50 1822.50
1994 3.00 0.00 32.50 84.00 215.50 266.50 439.00 467.00 331.00 73.00 0.00 4.00 1915.50
1995 4.00 11.50 32.50 55.50 228.00 351.50 0.00 z 0.00 z 0.00 z 91.50 41.50 7.00 823.00
1996 1.00 2.00 21.00 92.00 98.50 272.00 441.00 442.00 216.50 79.00 11.50 0.00 1676.50
1997 2.00 4.50 11.00 54.00 259.50 299.50 395.50 512.50 350.00 93.50 35.00 0.00 2017.00
1998 0.00 z 10.50 23.50 54.50 162.00 272.50 458.00 422.00 284.50 67.50 4.00 2.00 1761.00
1999 0.00 0.00 10.00 44.50 87.00 228.00 330.50 422.78 b 248.50 25.50 14.50 0.00 1411.28
2000 0.00 0.00 1.03 a 75.50 149.50 308.50 397.12 b 383.50 283.50 86.00 3.50 0.00 1688.15
2001 8.00 0.00 13.00 49.50 147.00 220.86 a 357.00 427.50 273.50 53.50 32.50 0.00 1582.36
2002 11.00 0.00 4.00 20.50 149.50 318.50 413.50 404.79 e 257.50 61.50 28.50 8.00 1677.29
2003 4.00 0.00 25.00 45.50 172.50 378.50 504.00 453.50 304.00 163.50 0.00 0.00 2050.50
2004 5.00 4.00 37.50 115.50 240.50 360.00 507.00 511.50 247.00 118.00 7.50 1.50 2155.00
2005 41.00 0.00 32.00 92.50 294.00 302.00 436.50 483.00 246.50 141.50 3.00 28.00 2100.00
2006 4.00 0.00 14.00 50.50 174.50 341.00 454.00 401.50 277.00 29.00 45.50 0.00 1791.00
2007 0.00 4.00 17.00 51.50 157.00 271.50 459.50 394.50 220.50 57.00 10.00 6.50 1649.00
2008 0.00 1.00 2.00 26.00 186.00 216.50 387.50 437.50 256.00 75.50 37.50 4.50 1630.00
2009 0.00 1.00 1.00 60.50 0.00 z 377.00 517.70 a 447.50 370.50 73.00 18.50 0.50 1867.20
2010 14.50 1.50 35.50 65.50 129.00 263.00 430.50 440.50 322.00 135.00 23.00 0.50 1860.50
2011 2.58 a 0.00 3.00 5.50 88.50 290.00 380.50 416.50 368.57 b 68.00 g 3.62 a 0.00 g 1558.78
2012 5.50 f 0.50 i 2.00 s 35.50 i 0.00 z 96.50 k 218.00 j 0.00 z 0.00 z 0.00 0.00 0.00 0.00
2013 0.00 0.00 6.00 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 6.00
Period of Record Statistics
MEAN 2.89 3.77 12.08 54.17 163.89 283.04 392.87 394.42 248.88 86.00 14.68 3.41 1669.19
S.D. 5.82 6.48 14.00 32.34 56.96 53.61 58.34 52.71 50.91 38.54 16.70 6.94 206.17
SKEW 3.52 2.48 1.67 0.71 0.54 0.22 0.41 0.27 0.34 0.15 1.56 4.00 0.44
MAX 41.00 33.00 73.50 158.00 349.00 430.00 557.00 512.50 370.50 193.50 85.50 51.50 2262.00
MIN 0.00 0.00 0.00 0.00 60.00 165.50 259.50 291.50 135.50 0.00 0.00 0.00 1200.50
NO YRS 113 115 113 114 113 112 112 112 115 115 114 114 95