SHELTON, WASHINGTON

Monthly Total Growing Degree Days

(457584)

Base Temperature = 50 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199904
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 0.00 z 0.00 z 245.17 a 64.14 b 7.00 0.00 316.31
1932 0.00 11.50 5.50 64.00 146.50 376.61 b 305.87 a 423.67 a 315.00 125.50 22.24 a 2.00 1798.38
1933 0.00 0.00 0.00 a 23.79 a 85.50 257.07 a 443.30 a 79.00 y 309.50 138.00 13.20 e 0.00 z 1270.36
1934 25.00 5.50 40.50 158.04 b 320.50 320.00 c 382.52 c 462.42 a 278.00 115.98 b 11.50 0.00 a 2119.95
1935 6.50 1.62 b 4.00 23.57 b 174.00 306.21 a 462.86 b 433.00 333.00 96.00 0.50 0.00 1841.26
1936 0.00 0.00 6.41 b 109.50 k 261.00 352.50 b 415.18 c 506.00 242.50 139.00 6.50 4.00 1933.09
1937 0.00 0.00 11.00 67.24 a 136.50 287.00 f 516.15 a 412.96 c 312.50 140.00 9.50 2.00 1607.86
1938 2.00 1.00 1.50 71.00 226.62 b 348.00 494.21 e 413.00 401.50 79.00 2.00 1.50 2041.33
1939 0.00 0.00 25.50 108.00 187.00 277.50 b 443.50 465.50 309.00 96.50 11.00 8.00 1931.50
1940 9.00 0.00 17.00 83.00 273.50 401.50 437.00 458.00 374.50 150.00 0.00 2.00 2205.50
1941 0.00 4.00 44.00 92.50 174.50 288.50 559.50 435.00 223.50 83.50 16.50 1.00 1922.50
1942 0.00 0.00 7.00 57.00 173.00 281.50 489.50 512.50 309.83 a 133.50 0.50 4.00 1968.33
1943 0.00 0.00 0.00 67.50 99.50 252.50 0.00 z 363.00 0.00 z 90.86 b 5.69 a 0.00 h 879.05
1944 1.50 0.00 8.50 42.00 148.50 279.00 432.00 419.00 350.50 142.00 12.00 2.50 1837.50
1945 5.00 0.50 0.50 19.50 226.62 b 207.00 470.00 427.50 205.00 102.00 16.50 1.00 1681.12
1946 0.00 0.00 0.00 41.00 295.53 a 232.00 440.00 442.50 252.50 28.00 0.00 17.50 1749.03
1947 0.00 7.50 21.00 76.50 261.00 303.00 407.00 428.50 272.50 81.50 6.00 0.00 1864.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 415.86 a 425.00 390.50 255.50 53.50 0.00 a 0.00 1540.36
1949 0.00 a 0.00 a 5.50 33.62 a 247.50 252.00 389.50 384.40 a 212.00 i 17.16 c 22.50 0.00 1352.18
1950 0.00 a 0.00 0.00 9.50 102.00 307.00 441.50 478.50 263.50 64.50 15.00 8.50 1690.00
1951 0.00 6.50 0.00 54.50 149.50 348.00 457.50 431.50 282.00 98.00 0.00 a 0.00 1827.50
1952 0.00 0.00 6.00 49.00 169.97 b 234.00 434.00 445.07 c 314.50 161.50 7.50 2.07 a 1823.60
1953 1.03 a 0.00 1.00 26.00 120.90 a 214.66 a 413.85 a 424.18 a 304.50 135.50 5.69 a 0.00 1647.31
1954 0.00 a 0.00 0.00 14.50 155.00 202.50 330.00 357.00 288.50 79.00 29.00 0.00 1455.50
1955 0.00 0.00 0.50 2.50 64.00 277.50 345.00 376.81 b 225.00 65.44 d 11.00 0.00 1367.75
1956 0.00 0.00 0.50 67.50 227.00 142.00 i 469.50 437.00 238.50 73.50 3.00 0.00 a 1516.50
1957 0.00 2.50 1.03 a 64.00 261.50 340.00 354.50 355.47 a 416.50 84.50 1.50 0.00 1881.50
1958 0.00 8.30 a 0.50 25.00 304.50 423.50 579.50 529.00 275.00 120.50 6.50 8.50 2280.80
1959 0.00 1.00 0.00 35.50 120.00 300.50 498.77 c 368.50 237.00 87.50 14.00 4.00 1666.77
1960 0.00 0.00 11.50 66.00 106.50 301.00 515.00 399.00 244.50 109.50 2.50 0.00 1755.50
1961 9.50 4.50 3.50 30.00 161.50 389.00 501.50 552.00 243.50 77.00 0.00 0.00 1972.00
1962 0.50 6.00 0.50 47.50 72.00 277.00 414.00 400.00 277.50 88.00 19.00 0.50 1602.50
1963 0.00 17.50 5.50 32.50 205.00 0.00 z 381.00 0.00 z 391.50 0.00 z 1.50 0.00 z 1034.50
1964 0.00 z 0.00 z 4.00 4.50 148.50 282.93 a 389.50 375.50 259.00 88.00 3.50 0.00 1555.43
1965 0.00 3.00 1.50 58.00 124.50 307.50 520.50 484.00 224.00 125.50 25.00 0.50 1874.00
1966 0.00 0.00 17.00 60.00 186.00 259.50 407.00 469.50 342.50 85.00 5.50 3.00 1835.00
1967 0.00 0.00 0.00 14.00 181.00 424.50 483.50 611.50 394.50 114.00 6.50 2.00 2231.50
1968 3.00 8.00 17.00 40.00 192.00 282.50 480.50 402.00 281.00 48.00 8.00 0.00 1762.00
1969 0.00 0.00 13.00 26.50 245.50 439.50 433.00 375.00 296.00 50.50 20.00 0.00 1899.00
1970 0.00 0.50 8.00 16.50 143.00 399.00 445.50 428.50 201.50 54.50 14.00 0.00 1711.00
1971 0.00 0.00 0.00 36.00 202.00 217.00 490.50 537.50 231.50 107.50 3.50 0.00 1825.50
1972 0.50 1.50 26.00 12.50 247.50 318.00 462.50 500.00 219.00 49.00 8.00 4.00 1848.50
1973 1.00 1.50 0.50 48.00 213.50 275.00 450.50 335.00 297.50 55.00 3.00 0.00 1680.50
1974 6.00 0.00 2.50 29.00 83.00 306.00 378.50 475.50 385.86 a 81.50 9.11 b 0.00 1756.97
1975 0.50 0.00 2.00 4.00 154.50 247.00 459.00 364.50 292.50 70.50 20.00 6.00 1620.50
1976 0.00 0.00 3.50 32.50 160.50 226.50 396.00 372.00 314.50 99.00 13.50 0.00 1618.00
1977 2.50 6.00 0.00 98.00 112.00 346.00 400.00 564.50 242.00 52.00 2.00 4.00 1829.00
1978 0.00 9.00 29.50 47.50 148.00 435.00 535.50 466.00 259.50 133.82 a 4.00 0.00 2067.82
1979 0.00 0.00 14.50 83.50 214.00 325.50 502.00 465.00 365.50 134.50 1.00 4.00 2109.50
1980 0.00 12.89 b 2.00 100.50 178.50 252.50 478.00 414.00 317.00 132.50 49.00 22.00 1958.89
1981 3.00 5.00 18.00 66.50 182.50 273.00 442.50 579.00 319.00 41.50 11.00 0.00 1941.00
1982 0.00 3.00 0.50 24.00 175.00 400.50 432.00 467.00 340.50 74.50 0.00 0.00 1917.00
1983 0.50 5.50 10.00 71.00 266.50 304.50 418.50 489.50 231.50 47.00 11.50 0.00 1856.00
1984 6.00 0.00 14.50 29.00 117.00 288.00 472.50 465.00 285.00 84.50 2.50 0.00 1764.00
1985 0.00 0.00 0.00 63.50 208.50 333.00 596.00 482.00 231.50 90.00 9.00 0.00 2013.50
1986 0.00 20.00 33.00 34.00 207.50 421.50 383.00 594.00 288.00 131.00 4.50 0.00 2116.50
1987 1.00 1.00 14.50 113.00 233.00 405.00 438.50 500.50 397.00 143.00 30.50 0.00 2277.00
1988 0.00 0.00 0.50 82.00 181.50 274.00 473.50 465.50 301.50 179.00 7.00 1.50 1966.00
1989 0.00 0.00 0.00 117.00 191.00 378.00 411.00 446.50 369.50 113.50 18.50 4.00 2049.00
1990 0.00 0.00 8.00 93.50 168.00 304.00 555.50 542.00 406.50 49.50 30.00 0.00 2157.00
1991 0.50 10.50 2.00 39.50 139.50 247.50 522.00 512.00 372.50 125.00 25.50 0.00 1996.50
1992 3.50 12.50 29.00 108.00 320.50 439.50 521.50 521.00 280.00 126.00 2.50 0.00 2364.00
1993 0.00 0.50 7.50 37.50 316.50 331.50 370.00 478.00 347.00 141.50 2.50 1.00 2033.50
1994 1.50 3.00 47.50 91.00 239.50 287.00 523.50 494.50 403.00 62.00 0.00 0.00 2152.50
1995 1.50 8.00 13.00 67.50 272.00 353.00 518.00 399.00 0.00 z 92.50 35.50 0.50 1760.50
1996 2.00 2.50 15.50 77.50 109.50 295.50 531.50 0.00 z 241.50 100.50 4.00 0.00 1380.00
1997 0.00 0.00 4.13 a 18.50 256.00 273.00 449.50 523.50 351.50 76.00 16.00 0.00 1968.13
1998 0.00 0.00 15.00 58.50 172.50 304.00 520.50 505.00 370.50 80.50 5.00 0.00 a 2031.50
1999 0.00 b 0.00 3.50 58.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 62.00
Period of Record Statistics
MEAN 1.41 2.91 9.04 53.23 187.08 312.84 453.64 453.68 299.25 94.91 10.15 1.87 1895.76
S.D. 3.64 4.53 11.34 32.09 63.62 63.36 60.39 62.95 57.98 34.93 9.93 3.88 204.51
SKEW 4.63 1.85 1.65 0.69 0.24 0.44 0.01 0.34 0.34 0.09 1.47 3.42 -0.02
MAX 25.00 20.00 47.50 158.04 320.50 439.50 596.00 611.50 416.50 179.00 49.00 22.00 2364.00
MIN 0.00 0.00 0.00 2.50 64.00 202.50 305.87 335.00 201.50 17.16 0.00 0.00 1367.75
NO YRS 66 66 67 66 66 64 66 64 65 67 68 65 56