MOUNT VERNON 3 WNW, WASHINGTON

Monthly Total Growing Degree Days

(455678)

Base Temperature = 50 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200501
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
1956 0.50 0.00 0.00 24.64 b 169.00 187.50 356.50 314.50 187.00 66.00 2.50 0.00 1308.14
1957 0.00 3.00 3.00 41.00 218.00 284.00 319.00 346.34 b 300.00 83.50 3.50 5.00 1606.34
1958 7.00 20.50 5.00 25.50 262.00 406.00 520.00 449.00 251.00 92.00 13.50 19.00 2070.50
1959 2.07 a 0.00 1.50 f 34.00 135.50 300.00 412.50 323.00 200.50 58.50 6.00 0.00 1472.07
1960 4.00 2.50 h 12.00 50.50 120.00 242.00 405.00 344.00 176.00 107.00 0.50 6.00 1467.00
1961 12.00 8.50 24.50 28.00 150.50 322.50 427.00 442.50 179.50 47.00 1.00 2.00 1645.00
1962 1.50 7.50 0.00 42.50 76.50 248.50 332.00 370.50 251.50 91.50 8.00 12.00 1442.00
1963 0.50 27.50 11.00 24.00 158.00 248.50 315.50 389.00 325.50 153.00 10.50 15.50 1678.50
1964 0.00 0.00 0.50 0.00 84.00 215.00 317.00 300.00 145.50 61.00 0.00 0.00 1123.00
1965 0.00 0.00 3.00 36.50 64.00 206.50 368.00 374.00 125.17 a 106.50 24.50 2.00 1310.17
1966 1.00 1.00 8.50 8.00 81.50 208.50 299.50 342.00 279.00 38.50 7.00 10.85 a 1285.35
1967 3.00 0.00 0.50 2.00 118.50 319.50 371.50 458.00 306.50 107.50 7.50 0.00 1694.50
1968 11.50 9.50 11.00 14.00 149.00 225.00 408.50 344.00 204.00 38.00 8.50 0.00 1423.00
1969 0.00 0.00 4.50 15.50 187.50 357.50 314.00 278.00 220.50 37.00 11.50 2.00 1428.00
1970 0.00 0.00 6.50 0.50 82.00 268.50 339.50 323.50 141.00 20.00 9.00 0.00 1190.50
1971 1.50 3.50 0.00 24.00 106.50 163.00 341.50 441.00 162.00 58.00 4.00 0.00 1305.00
1972 0.00 0.50 23.50 18.50 164.00 215.00 350.00 384.00 150.50 34.50 14.50 3.00 1358.00
1973 5.50 0.00 0.00 9.50 158.50 257.50 350.00 301.50 274.50 61.50 11.50 1.00 1431.00
1974 8.50 0.00 13.00 21.00 69.00 249.50 317.50 372.00 322.00 55.50 10.00 1.00 1439.00
1975 0.00 0.00 1.50 0.00 122.50 201.00 374.00 329.50 240.00 80.50 33.50 4.50 1387.00
1976 4.00 0.00 1.50 44.50 131.50 179.00 372.00 318.50 279.00 74.50 13.50 3.00 1421.00
1977 3.50 3.00 0.00 60.50 90.00 273.62 a 323.00 462.50 188.00 44.00 5.50 2.00 1455.62
1978 0.00 5.50 15.50 33.50 115.50 336.50 417.00 413.50 222.50 87.50 1.00 0.00 1648.00
1979 0.00 0.00 12.50 36.00 159.00 227.50 398.50 366.50 321.00 97.00 2.00 5.50 1625.50
1980 0.00 21.00 0.00 44.50 104.00 198.50 324.00 294.50 196.50 81.50 38.28 a 26.50 1329.28
1981 18.50 5.00 8.00 41.00 123.50 184.00 342.50 416.00 241.00 44.00 31.50 0.00 1455.00
1982 0.00 4.50 0.50 7.00 93.50 308.00 298.50 340.50 268.50 98.50 1.50 6.00 1427.00
1983 1.50 21.00 20.50 31.50 187.50 259.50 342.00 409.50 198.00 42.50 27.50 0.00 1541.00
1984 7.50 5.50 8.50 29.00 103.00 250.00 358.00 380.50 201.00 81.00 0.50 0.00 1424.50
1985 0.00 0.00 0.00 30.00 136.00 232.50 456.00 373.50 173.50 65.00 3.00 0.00 1469.50
1986 8.50 13.50 22.00 9.00 152.50 282.00 301.00 444.00 212.50 75.50 0.50 0.00 1521.00
1987 6.00 13.00 32.00 55.50 150.50 282.00 355.50 375.00 256.50 70.00 29.50 2.00 1627.50
1988 2.00 1.00 0.00 23.50 125.50 224.00 331.00 352.50 191.50 112.50 16.00 1.50 1381.00
1989 0.00 0.00 a 2.00 62.50 112.00 295.00 323.50 345.50 240.50 76.50 10.00 8.50 1476.00
1990 0.00 0.00 7.00 45.50 126.50 254.50 440.00 441.00 251.00 39.50 28.00 0.00 1633.00
1991 5.50 13.00 1.00 14.50 99.50 186.50 365.50 402.00 248.50 48.00 10.50 11.00 1405.50
1992 18.50 5.00 11.50 0.00 z 229.00 362.00 410.50 404.00 206.00 0.00 z 3.50 0.00 1650.00
1993 0.00 0.00 14.50 62.00 285.00 211.00 i 329.00 386.50 218.00 109.00 2.50 4.00 1410.50
1994 4.50 4.50 26.50 57.50 202.50 233.00 430.50 427.50 315.00 36.00 0.00 5.50 1743.00
1995 8.50 15.50 24.50 31.50 193.50 318.50 446.00 356.50 347.00 80.50 59.50 8.00 1889.50
1996 4.00 5.00 19.00 80.00 107.00 259.50 425.00 415.00 200.50 77.00 16.50 2.00 1610.50
1997 7.00 1.00 17.50 48.00 248.50 299.00 398.00 492.50 333.00 92.00 28.00 2.50 1967.00
1998 8.50 10.50 25.50 37.50 158.50 287.50 0.00 z 444.50 298.00 87.00 18.00 6.00 1381.50
1999 0.50 1.00 11.50 25.50 86.50 232.00 340.00 400.50 222.00 38.50 39.50 1.00 1398.50
2000 0.00 0.00 z 1.50 49.00 134.00 299.00 0.00 z 363.00 247.50 0.00 z 0.00 z 0.00 1094.00
2001 2.07 a 0.00 1.00 45.52 a 143.00 221.00 0.00 z 412.00 236.00 34.00 38.00 0.00 1132.58
2002 7.50 0.00 z 0.00 30.50 122.50 0.00 z 395.00 400.42 a 240.00 56.00 39.50 11.00 1302.42
2003 9.50 0.00 24.50 45.50 161.50 348.50 0.00 z 0.00 z 302.00 166.50 0.00 0.50 1058.50
2004 5.00 0.00 30.50 84.50 201.50 346.50 465.00 e 510.50 0.00 z 0.00 z 0.00 z 0.50 1644.00
2005 40.76 d 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 40.76
Period of Record Statistics
MEAN 4.64 5.00 9.73 33.01 142.03 261.81 369.46 382.81 235.34 71.98 13.85 3.89 1501.90
S.D. 6.95 7.01 9.77 19.95 50.57 55.42 51.33 53.33 55.62 30.93 14.02 5.56 197.23
SKEW 3.17 1.55 0.71 0.37 0.84 0.43 0.75 0.20 0.14 0.83 1.21 2.10 0.87
MAX 40.76 27.50 32.00 84.50 285.00 406.00 520.00 510.50 347.00 166.50 59.50 26.50 2070.50
MIN 0.00 0.00 0.00 0.00 64.00 163.00 298.50 278.00 125.17 20.00 0.00 0.00 1123.00
NO YRS 50 46 48 48 49 47 45 48 48 46 47 49 39