SNOQUALMIE FALLS, WASHINGTON

Monthly Total Growing Degree Days

(457773)

Base Temperature = 50 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201007
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
1898 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
1899 3.00 n 1.08 b 4.00 34.50 88.50 246.00 503.50 457.50 395.00 179.50 0.00 z 0.00 z 1909.58
1900 27.50 14.00 103.50 208.50 343.50 442.76 a 569.37 a 493.50 371.50 168.00 71.00 0.00 z 2813.13
1901 0.00 z 0.00 z 0.00 z 25.20 e 177.45 b 135.00 234.50 347.00 81.00 53.50 10.00 0.00 1063.65
1902 8.00 10.00 7.50 27.00 172.00 296.50 410.50 421.00 215.00 95.00 0.00 a 0.00 1662.50
1903 0.00 0.00 z 3.10 a 5.17 a 146.50 403.00 0.00 z 437.50 226.03 a 0.00 z 6.50 u 0.00 a 1221.31
1904 0.00 0.00 0.00 70.00 110.50 265.50 496.00 432.50 256.50 99.00 28.50 0.00 1758.50
1905 0.00 8.50 44.00 41.00 153.00 334.50 482.10 b 468.10 a 276.43 b 13.20 d 10.50 0.00 e 1831.34
1906 0.00 a 0.00 22.00 113.00 137.00 260.00 634.50 429.50 276.50 116.50 8.33 c 1.55 a 1998.88
1907 0.00 0.54 b 0.00 11.38 a 230.00 299.50 501.50 391.08 e 268.00 96.50 8.00 8.00 1814.49
1908 0.00 0.00 0.00 48.50 82.00 265.00 564.50 412.00 213.00 61.50 27.00 0.00 1673.50
1909 0.00 0.50 0.00 8.50 116.00 327.00 402.50 355.50 269.00 57.00 7.50 0.00 1543.50
1910 0.00 0.00 15.50 84.50 269.50 298.00 500.50 336.00 219.50 75.50 5.50 0.00 1804.50
1911 0.00 0.00 6.00 29.00 142.00 278.50 532.50 426.00 188.00 45.50 0.00 0.00 1647.50
1912 0.00 2.00 1.50 19.00 244.00 373.50 468.00 419.50 223.50 29.00 7.00 0.00 1787.00
1913 0.00 0.00 0.00 65.50 169.50 371.11 c 460.50 506.00 256.50 28.00 11.00 0.00 d 1868.11
1914 3.00 4.50 32.00 90.00 279.00 344.00 484.00 326.50 h 202.50 151.00 11.00 0.00 1601.00
1915 0.00 7.50 72.00 146.00 203.50 365.50 494.50 517.50 231.00 90.00 0.00 0.00 2127.50
1916 0.00 5.50 3.00 53.00 143.50 321.50 423.50 464.50 250.00 7.00 0.00 0.00 1671.50
1917 0.00 0.00 0.00 7.24 a 150.00 269.50 531.50 539.50 281.50 106.00 73.97 a 16.00 1975.21
1918 3.50 0.00 29.00 78.00 122.50 454.50 542.00 524.00 380.50 101.00 1.50 2.50 2239.00
1919 0.00 0.00 12.00 76.50 197.50 312.00 525.50 503.50 284.00 53.50 23.00 1.00 1988.50
1920 0.50 0.00 6.50 31.50 134.50 380.00 589.50 527.50 257.50 43.00 7.50 0.00 1978.00
1921 0.00 4.00 0.50 34.50 180.50 336.00 425.50 459.00 198.50 76.00 20.00 5.00 1739.50
1922 0.00 0.00 1.00 38.00 205.00 415.50 458.00 442.50 297.00 99.50 2.00 1.50 1960.00
1923 1.00 0.00 17.50 112.22 c 196.50 345.00 531.00 533.00 287.50 121.50 5.50 0.00 2150.72
1924 0.00 5.50 0.00 78.00 319.00 379.00 487.00 439.00 278.50 85.50 3.50 16.00 2091.00
1925 0.00 3.00 6.50 74.50 228.00 280.50 466.50 371.00 256.50 18.50 1.50 12.50 1719.00
1926 0.00 3.00 40.00 172.50 181.50 368.00 478.50 402.50 183.50 110.50 15.50 2.50 1958.00
1927 0.00 0.00 0.00 37.50 61.00 313.50 445.50 454.50 226.50 88.00 5.00 0.00 1631.50
1928 0.50 2.00 41.50 42.50 224.00 255.50 455.50 387.00 177.50 59.50 0.50 0.00 1646.00
1929 0.00 0.00 0.00 12.00 136.00 254.00 394.73 a 405.50 215.00 140.50 0.00 b 0.00 1557.73
1930 0.00 17.00 17.00 92.07 a 111.00 218.50 388.50 431.00 239.00 44.00 15.00 0.00 1573.07
1931 8.00 2.00 13.00 76.00 230.50 283.00 426.00 375.50 249.00 75.36 b 17.00 0.00 1755.36
1932 0.00 12.00 6.50 63.00 109.50 301.00 319.00 386.00 229.50 92.50 15.00 0.00 1534.00
1933 0.00 0.00 2.00 42.50 66.00 208.00 333.50 449.00 178.50 73.50 15.00 1.00 1369.00
1934 0.00 10.00 35.50 158.00 203.50 259.50 339.00 390.50 175.50 84.50 20.50 0.00 1676.50
1935 23.00 20.50 0.00 f 15.00 71.50 214.50 346.50 316.50 234.00 0.00 z 0.00 v 0.00 1241.50
1936 0.00 0.00 3.50 104.50 216.00 307.50 387.00 442.00 185.00 110.00 4.50 0.00 1760.00
1937 0.00 3.50 0.00 z 8.00 u 135.50 315.00 413.00 368.50 270.50 116.00 4.00 0.50 1626.50
1938 0.00 12.00 4.50 52.50 156.50 297.50 450.50 332.00 323.50 113.50 2.00 4.00 1748.50
1939 0.00 0.00 13.50 83.00 148.50 202.00 398.50 415.00 215.50 63.50 26.50 7.50 1573.50
1940 15.50 2.00 17.00 71.50 241.00 293.50 394.50 405.00 310.00 162.50 0.00 3.50 1916.00
1941 2.58 a 20.50 66.65 a 67.50 149.50 262.50 502.00 394.50 159.00 63.50 19.00 5.00 1712.23
1942 5.50 0.00 37.50 75.50 171.50 248.00 523.50 514.00 255.50 115.00 0.00 3.50 1949.50
1943 0.00 7.00 1.00 87.00 87.50 239.00 434.50 395.00 305.50 102.00 31.00 0.00 1689.50
1944 2.00 0.00 5.50 65.36 b 135.00 268.50 436.00 400.00 297.50 129.00 0.50 5.50 1744.86
1945 0.50 1.00 0.50 24.50 172.00 222.50 437.00 393.50 176.50 82.50 2.50 0.00 1513.00
1946 0.00 0.00 0.00 24.50 219.50 218.50 433.50 399.50 250.00 6.50 8.50 0.00 1560.50
1947 0.00 1.50 15.50 96.00 227.00 256.00 367.50 339.50 199.00 84.00 4.50 2.50 1593.00
1948 0.00 0.00 6.50 15.00 112.00 331.55 a 355.50 350.50 185.00 70.50 0.00 0.00 1426.55
1949 0.00 6.74 a 2.00 43.00 190.50 194.00 313.50 360.00 249.31 a 21.50 58.00 0.50 1439.05
1950 0.00 1.50 0.50 27.00 62.00 274.00 370.50 407.50 213.50 44.00 13.50 9.00 1423.00
1951 0.00 4.00 1.50 37.00 138.50 291.50 415.50 310.50 245.50 94.00 2.00 0.00 1540.00
1952 0.00 0.00 1.50 47.50 143.50 179.00 400.00 399.50 268.00 101.50 15.00 0.00 1555.50
1953 2.50 0.00 7.50 34.50 142.00 166.00 372.50 404.50 257.00 87.00 39.50 3.00 1516.00
1954 0.00 0.00 0.00 16.00 116.50 175.50 281.00 312.14 b 208.00 98.00 36.21 a 0.00 1243.34
1955 0.00 0.00 0.00 6.00 48.00 228.00 280.00 311.50 166.00 46.00 7.00 0.00 a 1092.50
1956 0.50 0.00 a 2.50 52.24 a 221.00 206.00 437.00 398.00 217.00 42.00 3.00 0.00 1579.24
1957 0.00 0.00 e 0.50 51.00 223.50 290.50 341.00 b 319.50 338.50 66.00 4.50 5.00 1640.00
1958 2.00 31.00 5.00 29.50 301.00 431.50 620.00 508.50 264.00 136.00 8.00 12.00 2348.50
1959 0.00 0.00 3.50 47.00 119.00 289.00 434.50 372.00 209.00 69.50 15.00 0.00 1558.50
1960 5.00 0.00 9.00 69.50 100.50 273.00 482.00 387.00 230.50 108.00 0.00 1.00 1665.50
1961 14.00 2.00 17.00 25.00 149.50 358.50 492.50 522.00 213.00 86.00 1.50 0.00 1881.00
1962 0.00 15.00 4.50 77.50 59.50 244.50 381.50 390.50 286.50 87.50 18.50 0.50 1566.00
1963 0.00 45.50 11.50 19.50 196.50 225.00 334.50 397.00 354.00 144.50 5.50 8.50 1742.00
1964 0.00 0.00 25.50 8.50 104.00 236.50 384.50 343.50 172.00 122.00 1.50 0.00 1398.00
1965 0.00 0.00 17.00 58.00 95.50 262.00 474.00 438.00 175.50 119.50 38.00 7.50 1685.00
1966 0.00 7.00 25.50 36.50 133.00 272.50 373.50 420.00 321.00 86.00 10.00 1.00 1686.00
1967 0.50 3.00 0.00 a 0.00 119.50 359.00 414.50 532.00 361.00 115.00 36.00 2.00 1942.50
1968 7.50 24.50 30.00 18.00 146.50 239.00 444.50 339.00 216.00 59.00 4.00 0.00 1528.00
1969 0.00 0.00 10.00 29.50 202.00 367.00 365.00 333.00 254.50 51.50 23.00 0.00 1635.50
1970 0.00 17.50 4.50 0.00 108.50 318.00 398.50 364.00 177.00 69.50 36.50 0.00 1494.00
1971 6.50 4.00 1.00 32.50 122.50 137.00 409.00 481.00 172.00 86.00 2.00 0.00 1453.50
1972 0.00 2.50 23.00 23.50 176.00 240.50 407.50 438.00 173.50 27.50 11.00 2.00 1525.00
1973 1.00 11.00 0.00 26.00 169.00 225.50 392.00 281.00 253.00 44.00 1.00 0.00 1403.50
1974 6.00 0.00 1.50 16.00 71.50 246.00 328.00 412.00 346.00 63.50 4.00 0.00 1494.50
1975 0.50 0.00 1.50 0.50 128.50 168.50 398.50 298.00 254.00 58.50 21.50 4.50 1334.50
1976 1.50 0.00 0.00 48.00 106.00 158.50 339.50 303.50 245.50 46.50 0.00 z 1.50 1250.50
1977 5.00 22.50 0.00 93.00 73.00 301.00 354.50 519.00 175.00 45.00 9.00 2.00 1599.00
1978 2.00 8.00 18.50 34.00 93.00 362.50 424.50 382.50 206.50 95.00 3.50 0.00 1630.00
1979 0.00 0.00 13.50 47.68 b 156.50 259.50 452.50 400.42 a 322.00 102.50 12.50 3.50 1770.60
1980 0.00 7.00 7.50 89.50 116.50 197.00 380.50 311.00 223.50 115.50 33.50 22.50 1504.00
1981 38.00 3.00 15.50 65.00 112.00 196.50 373.50 495.50 264.50 30.00 26.50 0.00 1620.00
1982 0.00 0.50 3.00 38.00 126.50 344.50 354.00 401.50 0.00 z 76.00 2.00 0.50 1346.50
1983 1.00 10.50 6.50 49.50 198.50 239.00 349.00 404.00 166.00 24.50 14.50 0.00 1463.00
1984 12.00 3.50 11.00 24.00 79.00 206.50 387.50 369.50 177.50 55.50 0.00 0.00 1326.00
1985 0.00 0.00 0.50 37.00 144.00 251.00 539.00 390.50 148.50 31.50 2.50 0.00 1544.50
1986 9.00 27.50 29.00 19.00 180.00 338.00 325.50 518.50 182.50 81.50 4.00 0.00 1714.50
1987 0.00 35.50 29.45 a 91.00 176.00 335.50 407.00 444.00 300.00 113.00 35.00 0.00 1966.45
1988 1.00 2.50 6.00 63.00 155.00 245.50 408.00 418.50 249.50 145.50 9.00 3.50 1707.00
1989 0.00 0.00 3.50 84.00 129.50 341.50 369.00 406.50 296.00 79.00 18.00 9.00 1736.00
1990 0.00 0.00 5.50 44.50 104.00 263.50 500.00 480.50 312.50 42.00 23.00 0.00 1775.50
1991 1.50 15.00 3.50 25.50 85.50 178.00 433.00 483.50 284.50 105.50 10.00 2.50 1628.00
1992 4.00 34.00 18.00 118.00 238.00 366.00 426.00 459.50 206.50 111.00 2.50 0.00 1983.50
1993 0.00 22.50 6.00 33.50 258.50 247.50 278.50 403.50 272.50 102.50 0.00 0.00 1625.00
1994 1.50 0.00 30.00 46.50 168.50 222.50 457.00 446.00 331.50 59.50 0.00 2.00 1765.00
1995 11.00 8.00 30.00 38.50 193.00 284.00 459.50 324.00 339.50 0.00 z 29.00 0.50 1717.00
1996 0.00 z 4.50 15.00 71.50 69.50 0.00 z 473.00 425.50 194.00 86.50 7.50 0.00 1347.00
1997 0.00 7.00 15.50 28.50 231.50 246.00 389.00 484.00 335.50 73.50 32.00 0.00 1842.50
1998 4.00 11.00 29.00 39.50 141.50 283.50 508.50 453.00 334.00 110.00 6.50 0.00 1920.50
1999 0.00 0.00 6.00 39.50 63.50 209.00 337.00 435.55 a 237.50 39.00 27.50 1.55 a 1396.10
2000 0.00 1.50 2.00 45.50 131.23 a 271.50 376.00 376.65 a 251.50 63.50 0.00 0.00 1519.38
2001 3.50 0.00 9.00 47.50 136.40 a 206.00 363.50 418.00 264.50 36.68 a 32.50 0.00 a 1517.58
2002 3.00 1.00 0.00 7.00 103.50 297.93 a 413.00 406.50 249.00 43.50 29.00 1.00 1554.43
2003 10.00 0.00 23.00 29.00 134.00 332.50 0.00 z 481.50 290.00 138.00 0.00 z 0.00 c 1438.00
2004 0.00 0.50 34.00 90.00 167.50 360.50 586.50 588.50 317.00 145.00 2.50 1.50 2293.50
2005 24.50 0.00 52.24 d 72.50 217.50 232.50 458.50 507.00 231.00 157.00 2.00 5.00 1959.74
2006 0.00 0.00 6.50 45.00 163.50 339.50 517.50 445.00 300.50 55.50 24.50 0.00 g 1897.50
2007 0.00 10.00 35.50 50.50 143.50 274.00 496.50 420.50 249.00 60.50 5.50 5.50 1751.00
2008 0.00 0.00 4.00 21.50 136.00 172.50 383.50 421.50 222.50 59.00 14.00 p 0.00 z 1420.50
2009 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
2010 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
Period of Record Statistics
MEAN 2.61 5.48 12.98 51.34 154.79 278.87 428.19 417.48 247.31 81.49 13.17 2.06 1691.68
S.D. 6.09 8.83 17.02 36.60 59.00 67.11 75.94 63.20 57.26 37.56 14.66 3.90 226.64
SKEW 3.51 2.22 2.40 1.46 0.63 0.25 0.25 0.18 0.22 0.26 1.79 2.79 0.47
MAX 38.00 45.50 103.50 208.50 343.50 454.50 634.50 588.50 395.00 179.50 73.97 22.50 2348.50
MIN 0.00 0.00 0.00 0.00 48.00 135.00 234.50 281.00 81.00 6.50 0.00 0.00 1092.50
NO YRS 107 108 107 109 110 109 108 109 109 107 104 106 96