PORT TOWNSEND, WASHINGTON

Monthly Total Growing Degree Days

(456678)

Base Temperature = 50 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201001
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
1891 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 67.50 11.50 1.50 80.50
1892 0.52 a 0.00 z 2.50 10.50 88.00 218.50 260.00 327.00 216.00 55.00 0.00 z 0.00 z 1178.02
1893 0.00 z 0.00 z 0.00 3.00 62.00 137.50 311.00 337.50 225.00 26.50 0.00 0.00 1102.50
1894 0.00 0.00 4.00 11.00 93.00 173.00 353.00 401.50 175.50 33.00 0.00 0.00 1244.00
1895 0.00 z 1.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.50
1896 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
1897 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 128.00 p 271.50 429.00 202.50 59.50 3.50 0.00 966.00
1898 0.00 4.50 0.00 a 13.50 138.00 238.00 321.00 370.50 253.50 83.00 8.00 2.50 1432.50
1899 0.00 1.50 0.00 19.00 37.00 120.00 340.00 250.50 258.50 58.00 72.00 2.00 1158.50
1900 3.50 1.00 18.00 64.50 101.50 252.50 332.50 289.00 199.00 43.00 2.00 4.50 1311.00
1901 0.00 9.85 a 2.50 15.50 79.50 126.72 a 236.50 372.00 d 196.50 154.00 38.50 0.00 1231.58
1902 1.50 9.00 4.00 17.00 128.50 231.50 324.00 339.97 a 203.50 94.50 0.50 0.50 1354.47
1903 1.00 0.00 0.00 10.86 a 74.50 258.50 275.00 311.00 177.00 63.00 19.50 0.00 1190.36
1904 0.00 0.00 0.00 64.00 96.50 198.62 a 340.50 290.00 256.00 102.00 34.50 0.00 1382.12
1905 0.00 4.50 38.75 a 44.50 88.00 212.00 326.50 302.00 225.00 33.50 13.97 a 0.00 1288.72
1906 4.00 1.00 13.00 63.50 110.50 199.50 412.00 354.50 194.00 106.00 5.50 1.50 1465.00
1907 0.00 0.00 a 0.00 13.50 174.50 216.00 345.50 290.00 233.00 80.50 12.00 4.50 1369.50
1908 0.00 0.00 2.50 23.00 65.50 206.00 375.50 273.00 157.00 44.50 53.50 0.00 1200.50
1909 0.00 2.00 0.00 4.50 63.07 b 226.50 198.50 f 281.00 209.00 64.50 2.00 0.00 852.57
1910 1.00 0.00 7.50 25.00 143.63 a 176.00 323.50 238.70 a 199.50 70.27 a 1.50 0.00 c 1186.60
1911 0.00 0.00 0.50 8.08 d 64.07 a 159.31 a 340.48 a 312.50 185.00 65.74 b 3.75 b 0.00 b 1139.43
1912 1.66 c 0.00 b 1.00 12.50 165.00 244.04 d 257.00 g 313.00 220.50 30.00 k 4.00 0.00 961.70
1913 0.00 0.00 0.00 15.50 101.00 208.50 289.00 359.08 a 239.50 25.00 6.50 0.00 1244.08
1914 0.00 2.00 34.50 34.00 204.00 214.00 323.50 326.50 177.78 c 98.00 6.21 a 0.00 1420.48
1915 0.00 0.00 38.00 73.50 149.50 244.50 259.00 37.50 z 242.00 76.50 1.50 0.00 1084.50
1916 0.00 b 3.00 12.00 30.00 77.50 227.07 a 266.50 348.00 237.00 42.00 0.00 0.00 d 1243.07
1917 0.00 a 0.00 0.00 10.00 56.00 157.78 c 290.00 364.50 239.44 c 68.00 19.50 5.50 1210.72
1918 1.00 0.00 7.23 a 37.50 50.00 242.00 281.00 313.62 a 302.50 116.25 a 3.46 d 0.00 1354.56
1919 0.00 d 0.00 12.40 a 18.10 a 82.31 b 169.00 293.95 c 152.50 o 233.04 b 32.07 b 14.44 c 0.00 a 855.31
1920 0.00 b 0.00 0.00 a 0.00 52.50 f 231.60 e 341.50 351.50 183.50 34.50 12.50 0.00 1155.10
1921 0.00 0.00 2.50 11.90 a 93.50 218.50 192.50 m 292.90 b 170.00 73.00 7.50 1.50 871.29
1922 0.00 0.00 b 0.00 a 12.50 120.00 278.00 306.50 328.50 250.00 108.00 0.00 b 1.00 1404.50
1923 0.00 0.00 2.50 33.00 113.50 236.00 339.50 363.45 b 250.50 93.50 4.50 0.50 1436.95
1924 3.10 a 1.50 0.00 27.00 171.50 254.00 314.98 c 316.41 b 217.50 82.00 1.00 4.00 1393.00
1925 0.00 1.00 0.00 37.50 198.18 c 249.00 367.50 380.04 d 227.50 45.50 9.50 4.13 a 1519.85
1926 0.00 5.92 b 20.15 a 113.50 168.50 331.50 399.50 342.00 199.50 118.50 24.31 a 2.50 1725.88
1927 0.00 0.00 0.00 27.50 94.00 292.50 378.00 346.00 226.50 84.50 2.00 0.00 1451.00
1928 0.00 0.00 18.00 20.50 206.00 266.00 407.50 324.00 207.00 65.00 10.00 0.00 1524.00
1929 0.00 0.00 0.00 10.50 g 99.00 176.00 f 373.50 355.50 231.00 102.41 c 2.50 0.00 1163.91
1930 0.00 a 7.91 e 11.00 16.20 e 17.00 204.00 339.00 386.50 263.00 39.00 11.00 0.00 1294.61
1931 4.50 0.00 5.00 79.50 183.00 245.50 374.00 259.00 h 243.10 a 58.50 4.00 0.00 1197.10
1932 0.00 6.50 4.00 47.78 c 117.00 264.00 318.50 388.00 237.50 132.55 b 25.00 i 2.00 1517.83
1933 0.00 0.00 0.00 18.50 50.00 172.50 311.50 386.50 174.00 87.00 7.00 0.00 1207.00
1934 0.00 c 2.00 31.00 122.00 181.00 h 0.00 z 329.00 372.00 225.00 d 112.00 27.50 0.00 1220.50
1935 15.50 4.50 q 0.00 30.00 107.50 276.00 359.50 359.00 283.00 88.00 0.00 0.00 1518.50
1936 0.00 0.00 1.00 72.50 180.50 300.50 356.50 401.00 205.00 146.50 25.50 4.43 c 1693.43
1937 0.00 b 0.00 33.50 9.00 112.50 271.00 352.00 321.50 246.50 113.00 7.50 2.00 1468.50
1938 0.00 0.00 0.50 34.00 127.21 b 256.50 358.00 292.00 235.00 53.00 0.00 1.50 1357.71
1939 0.00 0.00 6.00 45.50 120.00 150.50 330.50 383.50 241.00 58.50 20.00 7.00 1362.50
1940 5.00 0.50 4.50 64.50 190.50 288.50 255.48 b 298.00 g 303.62 a 113.00 0.50 0.00 1226.10
1941 0.00 9.50 38.00 66.00 163.50 278.50 443.50 326.50 174.50 50.00 13.00 0.00 1563.00
1942 0.50 0.00 9.30 a 25.50 132.50 243.89 c 431.23 c 425.22 a 251.50 100.23 a 9.00 0.00 1628.87
1943 0.00 d 1.00 0.00 b 73.00 93.50 235.86 a 335.50 335.00 291.43 b 127.00 9.00 1.00 1502.29
1944 0.00 z 0.00 2.50 30.00 161.50 248.00 457.25 c 327.00 0.00 z 137.00 8.50 6.00 1377.75
1945 2.50 0.00 0.50 13.50 175.50 248.00 356.00 333.50 174.00 96.00 3.00 0.00 1402.50
1946 0.00 2.00 1.00 18.50 191.50 246.50 351.00 356.00 0.00 z 0.00 z 0.00 z 0.00 z 1166.50
1947 0.00 b 2.00 5.50 68.50 152.50 i 247.50 343.00 338.50 244.00 91.00 0.00 9.00 1349.00
1948 0.00 0.00 0.00 12.00 112.00 297.50 315.00 302.00 203.00 60.50 9.50 0.00 z 1311.50
1949 0.00 0.00 1.50 7.50 193.00 220.00 294.00 292.00 230.50 13.50 19.00 0.00 1271.00
1950 0.00 0.00 0.50 7.50 51.00 246.72 a 299.50 337.50 205.00 36.50 11.00 4.00 1199.22
1951 0.00 0.50 0.00 27.50 106.00 263.50 343.50 318.00 226.00 0.00 z 3.50 0.00 1288.50
1952 0.00 0.00 0.00 14.50 98.00 145.50 304.50 329.50 257.00 114.00 4.50 6.00 1273.50
1953 0.50 0.00 1.00 15.50 106.50 158.79 a 328.00 353.50 237.50 77.50 14.00 0.00 1292.79
1954 0.00 0.00 0.00 1.50 97.50 151.00 271.50 286.50 236.50 54.00 22.50 0.00 1121.00
1955 0.00 0.00 a 0.00 f 1.50 47.00 182.00 258.00 316.20 a 222.50 55.00 9.00 0.00 1091.20
1956 0.00 0.00 0.00 62.50 218.50 185.50 401.50 363.50 234.00 68.50 5.00 0.00 1539.00
1957 0.00 0.00 1.50 39.00 240.25 e 279.00 341.00 390.71 b 384.00 54.50 r 3.00 0.00 o 1678.46
1958 2.00 12.00 13.00 f 41.00 256.78 a 400.50 514.50 449.50 285.50 97.50 9.50 6.50 2075.28
1959 0.00 a 1.50 2.50 47.14 b 133.50 281.00 420.50 347.00 210.00 68.20 a 5.50 0.00 1516.84
1960 4.13 a 1.00 4.50 52.00 112.50 238.00 409.50 342.03 a 217.00 92.50 0.00 2.50 1475.67
1961 5.00 4.50 8.50 20.50 145.50 330.50 439.00 433.50 225.50 59.00 0.00 0.00 1671.50
1962 0.00 1.50 0.00 34.50 77.50 226.00 323.50 334.00 254.50 81.00 8.00 4.50 1345.00
1963 0.00 15.00 9.82 a 31.50 182.00 238.00 321.00 390.00 322.00 136.00 4.00 12.00 1661.32
1964 1.50 1.00 1.50 7.50 78.00 212.50 325.50 335.50 212.00 83.00 0.00 1.00 1259.00
1965 0.00 0.00 9.50 43.00 82.00 243.00 366.00 356.00 195.50 126.50 25.50 1.00 1448.00
1966 0.00 5.50 13.50 26.50 120.00 217.00 279.50 333.00 263.50 35.00 0.00 3.00 1296.50
1967 0.00 0.00 0.00 2.00 107.50 306.00 342.50 420.00 345.00 81.50 4.50 0.00 1609.00
1968 3.50 3.50 11.50 21.50 152.50 226.00 405.50 336.00 233.50 56.32 a 3.00 0.00 e 1452.82
1969 0.00 n 0.00 1.60 b 15.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 16.60
1970 0.00 z 0.00 0.00 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 0.00
1971 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 281.50 l 429.00 197.00 74.00 0.00 0.00 700.00
1972 0.00 1.00 11.00 8.00 195.82 a 216.00 374.50 386.50 180.50 65.50 4.00 0.00 1442.82
1973 0.00 0.00 0.50 20.50 134.85 a 204.50 357.50 308.97 a 283.00 45.00 3.50 0.00 1358.32
1974 1.00 0.00 a 5.17 a 12.00 83.00 239.50 314.50 383.00 356.50 91.00 2.00 0.00 1487.67
1975 0.00 a 0.00 0.00 1.55 a 127.10 a 194.00 360.00 285.20 a 267.50 60.97 a 26.40 e 1.50 1324.22
1976 3.00 0.00 2.14 b 50.89 b 118.32 a 176.79 b 335.32 a 284.50 261.96 b 78.50 14.00 3.50 1328.91
1977 0.50 2.50 1.00 67.00 90.79 c 261.50 319.50 434.00 223.00 53.00 0.00 z 0.00 1452.79
1978 0.00 1.00 15.00 40.00 120.38 a 374.50 395.00 380.30 c 221.50 103.50 3.50 0.00 1654.69
1979 0.00 0.00 17.00 51.00 184.00 255.00 396.50 387.50 337.50 135.50 6.00 3.62 a 1773.62
1980 0.00 5.50 0.50 58.50 142.50 216.00 351.50 338.00 254.00 80.00 t 0.00 z 19.00 i 1366.50
1981 10.50 3.00 18.50 57.50 146.50 196.50 381.50 482.00 283.50 48.50 21.00 0.00 1649.00
1982 0.00 4.50 2.00 18.50 148.00 335.00 332.50 393.00 305.00 102.50 4.00 0.00 1645.00
1983 2.50 8.00 20.50 65.00 235.50 269.00 380.50 445.50 231.00 59.50 16.00 0.00 1733.00
1984 2.58 a 2.50 8.00 32.50 106.00 236.00 388.00 424.00 237.50 79.50 0.50 0.00 1517.08
1985 0.00 0.00 0.00 44.00 172.00 281.50 502.00 406.50 229.00 74.50 0.00 0.00 1709.50
1986 1.00 13.50 24.00 19.50 161.00 309.50 340.00 500.50 256.50 100.00 2.00 0.00 1727.50
1987 3.50 3.50 19.00 75.50 190.00 301.50 398.50 415.50 319.50 137.00 0.00 z 0.00 z 1863.50
1988 1.50 t 0.00 0.50 59.00 150.50 228.50 360.50 389.50 249.50 121.50 12.50 0.00 1572.00
1989 0.00 0.00 0.00 99.00 143.00 307.50 342.50 349.50 339.50 86.50 13.50 4.00 1685.00
1990 0.00 0.00 8.00 57.00 144.50 257.50 455.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 922.50
1991 1.50 3.00 0.50 31.00 126.50 209.00 393.00 389.00 322.50 113.50 10.50 0.50 1600.50
1992 5.50 5.50 16.00 88.00 237.00 369.00 397.00 418.00 222.00 129.50 1.50 0.00 1889.00
1993 0.00 0.50 9.00 45.50 256.50 257.00 320.50 399.00 263.00 116.50 2.00 0.00 1669.50
1994 0.00 1.50 29.50 60.50 196.50 246.00 406.50 439.00 328.50 68.50 0.00 0.50 1777.00
1995 5.00 5.50 10.50 43.00 215.00 299.00 433.00 311.00 350.00 72.00 29.00 0.00 1773.00
1996 1.00 3.00 17.50 51.50 82.00 232.00 424.50 427.00 208.00 78.50 7.00 0.00 1532.00
1997 2.50 0.00 5.00 40.50 219.00 266.50 386.50 459.00 322.00 88.00 11.00 0.00 1800.00
1998 1.00 3.00 17.00 53.00 163.50 275.00 398.00 416.50 321.50 91.00 10.50 0.00 1750.00
1999 0.00 0.00 5.50 45.50 84.50 193.50 318.50 377.00 260.00 52.50 16.00 0.00 1353.00
2000 0.00 0.00 0.50 40.00 107.50 274.00 359.00 338.50 255.50 86.50 1.00 0.00 1462.50
2001 0.00 0.00 0.00 z 36.00 135.50 195.00 322.50 369.50 268.50 67.50 13.00 0.00 1407.50
2002 3.50 0.00 0.00 22.50 113.50 316.00 391.00 386.93 d 272.00 80.00 20.00 0.00 1605.43
2003 3.50 0.00 11.50 35.00 134.00 350.50 455.00 426.50 341.50 138.00 0.50 0.00 1896.00
2004 1.00 1.00 22.00 103.00 193.00 340.00 487.00 453.50 238.00 118.50 8.50 1.00 1966.50
2005 23.00 0.00 23.50 124.50 232.00 299.50 446.50 433.00 237.50 94.03 a 0.00 9.00 1922.53
2006 1.00 0.00 6.50 0.00 z 151.00 227.00 i 432.00 330.50 279.00 66.50 0.00 z 0.00 b 1266.50
2007 0.00 d 7.00 28.62 e 41.00 134.50 213.00 513.00 0.00 z 0.00 z 99.95 b 11.00 0.00 z 1048.06
2008 0.00 z 2.00 2.50 0.00 z 0.00 z 273.00 486.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 764.00
2009 3.00 0.00 z 0.00 a 25.20 e 92.50 g 346.50 512.00 0.00 z 320.00 75.50 5.00 0.00 i 1287.20
2010 0.00 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 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 1.27 1.83 7.39 36.49 132.46 242.70 358.12 359.33 244.54 80.74 9.37 1.26 1472.85
S.D. 3.04 3.07 9.88 26.89 52.26 54.16 59.88 51.64 47.13 30.42 11.21 2.31 206.71
SKEW 4.68 2.21 1.58 1.08 0.33 0.27 0.59 0.27 0.71 0.23 2.64 2.26 0.39
MAX 23.00 15.00 38.75 124.50 256.78 400.50 514.50 500.50 384.00 154.00 72.00 12.00 1966.50
MIN 0.00 0.00 0.00 0.00 17.00 120.00 236.50 238.70 157.00 13.50 0.00 0.00 1121.00
NO YRS 109 111 111 110 107 109 110 106 109 108 106 106 80