DIABLO DAM, WASHINGTON

Monthly Total Growing Degree Days

(452157)

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
1914 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 w 0.00
1915 0.00 0.00 19.50 99.50 87.50 q 160.50 n 252.00 o 444.00 g 96.50 o 12.52 e 0.00 0.00 131.52
1916 0.00 0.00 0.00 15.00 95.50 297.00 389.50 497.00 239.00 29.50 0.00 0.00 1562.50
1917 0.00 0.00 0.00 1.50 121.50 222.00 464.50 511.50 241.50 108.00 23.00 0.00 1693.50
1918 0.00 0.00 0.00 57.00 102.00 391.03 a 497.00 400.00 407.00 79.10 b 0.00 m 0.00 l 1933.14
1919 0.00 d 0.00 c 0.00 32.00 115.50 218.50 455.50 447.50 271.00 38.50 0.00 0.00 a 1578.50
1920 0.00 j 0.00 t 1.00 m 11.50 f 65.00 238.00 527.50 518.00 175.00 30.50 0.00 0.00 1554.00
1921 0.00 0.00 0.00 4.50 151.00 300.50 375.50 428.83 a 125.00 47.50 1.50 0.00 1434.33
1922 0.00 0.00 0.00 7.50 135.00 409.00 506.00 458.50 263.00 58.00 0.00 0.00 1837.00
1923 0.00 0.00 0.00 32.00 130.50 287.00 505.50 510.00 299.50 85.00 0.00 0.00 1849.50
1924 0.00 0.00 0.00 29.50 271.00 323.50 467.00 460.50 284.00 18.00 0.00 c 0.00 1853.50
1925 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
1926 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
1927 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
1928 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 174.00 p 534.50 440.50 249.00 26.50 0.00 0.00 1250.50
1929 0.00 0.00 0.00 36.50 146.00 266.00 438.50 439.50 279.00 66.50 0.00 0.00 1672.00
1930 0.00 0.00 18.50 65.50 111.00 274.50 460.19 b 508.00 267.00 39.50 0.00 0.00 1744.19
1931 0.00 0.00 0.00 84.50 202.50 297.00 470.00 469.50 201.00 48.00 1.50 0.00 z 1774.00
1932 0.00 e 0.00 0.00 37.50 112.00 0.00 z 236.00 m 395.00 0.00 z 0.00 z 0.00 z 0.00 z 544.50
1933 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
1934 0.00 0.00 2.00 0.00 z 194.50 316.00 370.00 500.50 184.00 77.50 0.00 0.00 1644.50
1935 0.00 0.00 0.00 15.50 159.00 280.00 437.50 407.50 313.50 72.00 0.00 0.00 1685.00
1936 0.00 0.00 0.00 54.00 195.50 243.50 422.50 402.50 260.00 113.50 0.00 0.00 1691.50
1937 0.00 0.00 0.00 0.50 142.00 304.50 456.00 409.00 302.00 94.00 3.00 0.00 1711.00
1938 0.00 0.00 0.00 20.50 171.50 320.00 538.00 424.50 438.50 58.50 0.00 0.00 1971.50
1939 0.00 0.00 1.50 62.00 192.00 245.00 502.50 588.00 322.00 46.00 0.00 0.00 1959.00
1940 0.00 0.00 4.50 46.50 224.00 341.00 452.00 480.00 417.50 91.50 0.00 0.00 2057.00
1941 0.00 0.00 24.50 116.50 143.00 251.50 624.50 478.50 125.00 28.50 0.00 0.00 1792.00
1942 0.00 0.00 4.00 63.50 121.50 196.00 540.00 570.50 365.50 74.00 0.00 0.00 1935.00
1943 0.00 m 0.00 z 0.00 s 45.00 a 62.00 233.28 a 408.50 382.00 358.97 a 129.17 a 0.00 f 0.00 a 1618.91
1944 0.00 0.00 0.00 36.50 159.00 299.48 a 472.00 412.50 292.76 a 108.50 0.00 0.00 1780.74
1945 0.00 0.00 0.00 6.00 190.50 239.50 472.00 496.50 199.14 a 107.00 1.03 a 0.00 1711.67
1946 0.00 0.00 0.00 16.00 191.00 195.50 417.00 461.00 260.50 15.00 0.00 0.00 1556.00
1947 0.00 0.00 1.00 65.50 219.50 222.50 381.50 398.72 b 265.00 0.00 z 0.00 0.00 1553.72
1948 0.00 0.00 0.00 12.50 104.00 347.00 362.00 371.50 233.50 35.50 0.00 0.00 1466.00
1949 0.00 0.00 0.00 33.50 220.50 227.50 354.00 408.50 301.00 7.23 a 0.00 a 0.00 1552.23
1950 0.00 0.00 0.00 3.10 a 65.50 304.00 539.00 497.07 b 328.00 14.00 0.00 0.00 1750.67
1951 0.00 0.00 0.00 54.50 148.80 a 369.50 503.50 468.50 359.00 63.00 0.00 0.00 1966.80
1952 0.00 0.00 0.00 57.50 214.50 226.50 492.50 482.50 367.50 179.50 0.00 0.00 2020.50
1953 0.00 0.00 2.00 43.00 189.50 213.00 515.50 423.00 308.00 81.50 0.00 0.00 g 1775.50
1954 0.00 z 0.00 0.00 3.00 144.00 180.00 344.00 325.00 246.50 32.50 5.50 0.00 1280.50
1955 0.00 0.00 0.00 3.00 31.52 a 266.50 315.00 452.50 266.50 38.50 2.50 0.00 1376.02
1956 0.00 0.00 0.00 59.50 260.00 195.00 488.50 485.00 281.00 36.00 0.00 0.00 1805.00
1957 0.00 0.00 0.00 41.00 299.00 322.50 356.50 375.00 431.50 57.00 0.00 0.00 1882.50
1958 0.00 0.00 2.50 33.50 374.50 428.50 711.50 590.00 245.00 93.50 1.50 0.00 2480.50
1959 0.00 0.00 0.00 29.50 122.50 301.00 514.00 381.50 182.50 57.50 1.00 0.00 1589.50
1960 0.00 0.00 7.50 41.00 106.00 276.00 572.50 382.50 272.50 99.00 0.00 0.00 1757.00
1961 0.00 0.00 0.00 s 10.20 e 161.50 394.50 515.50 625.00 209.00 50.00 0.00 0.00 1965.70
1962 0.00 0.00 0.50 62.22 c 61.00 280.00 421.00 381.00 299.00 60.00 8.00 0.00 1572.72
1963 0.00 0.00 1.00 21.50 211.00 256.50 358.50 507.00 382.00 111.50 0.00 0.00 1849.00
1964 0.00 0.00 2.00 5.50 109.50 229.50 405.00 342.00 201.00 76.00 0.00 0.00 1370.50
1965 0.00 0.00 1.00 48.50 124.00 295.50 0.00 z 487.50 239.00 89.50 8.50 0.00 1293.50
1966 0.00 0.00 z 7.50 24.50 194.50 255.50 396.50 469.00 339.00 51.00 0.00 0.00 1737.50
1967 0.00 0.00 0.00 1.00 131.00 388.50 445.50 621.60 b 409.00 40.00 2.50 0.00 2039.10
1968 0.00 0.00 1.50 21.50 157.50 247.00 488.50 408.50 276.00 15.50 0.00 0.00 1616.00
1969 0.00 0.00 0.00 26.50 250.50 445.00 406.00 382.50 241.50 32.50 4.50 0.00 1789.00
1970 0.00 0.00 0.00 0.50 145.50 422.50 483.50 477.50 157.50 45.50 0.00 0.00 1732.50
1971 0.00 0.00 0.00 16.00 175.50 148.00 452.00 558.50 175.00 77.50 0.00 0.00 1602.50
1972 0.00 0.00 0.50 8.50 174.50 228.00 407.00 500.00 186.00 57.00 0.00 0.00 1561.50
1973 0.00 0.00 0.00 24.00 198.00 266.00 457.00 400.50 305.00 11.50 0.00 0.00 1662.00
1974 0.00 0.00 0.00 16.00 42.50 321.00 389.50 522.00 397.50 66.50 0.00 0.00 1755.00
1975 0.00 0.00 e 0.00 0.00 91.50 159.50 415.00 f 321.33 e 366.00 64.50 2.00 0.00 1004.83
1976 0.00 0.00 0.00 35.50 128.50 200.00 360.50 343.00 337.00 80.50 1.00 0.00 1486.00
1977 0.00 0.00 0.00 112.50 96.00 336.00 355.97 b 602.50 220.00 13.50 0.00 m 0.00 1736.47
1978 0.00 0.00 7.00 18.75 b 114.00 392.00 495.50 447.00 173.00 94.00 0.00 0.00 1741.25
1979 0.00 0.00 0.00 49.50 174.00 297.50 488.00 496.00 336.00 130.50 0.00 0.00 1971.50
1980 0.00 0.00 0.00 86.90 a 160.50 232.00 448.50 389.00 245.50 92.50 0.50 2.00 1657.40
1981 0.00 0.00 0.50 33.50 157.00 172.00 412.00 594.50 274.00 15.00 0.00 0.00 1658.50
1982 0.00 0.00 0.50 18.50 112.00 350.00 367.50 410.50 283.00 48.00 0.00 0.00 1590.00
1983 0.00 0.00 0.50 66.50 247.00 254.00 338.00 459.00 185.00 15.00 1.00 0.00 1566.00
1984 0.00 0.00 0.00 19.00 53.50 215.50 440.50 459.00 174.00 51.00 0.00 0.00 z 1412.50
1985 0.00 z 0.00 0.00 z 25.00 169.50 276.00 600.50 426.00 161.00 18.50 0.00 0.00 1676.50
1986 0.00 0.00 4.50 11.00 152.50 386.00 344.50 615.50 229.50 75.50 1.00 0.00 1820.00
1987 0.00 0.00 2.50 93.50 204.00 372.50 0.00 z 489.00 372.00 123.50 4.50 0.00 1661.50
1988 0.00 0.00 0.00 67.00 159.50 289.50 436.50 464.50 280.00 149.00 2.50 0.00 1848.50
1989 0.00 0.00 0.00 75.50 133.50 378.50 407.50 415.00 366.50 63.50 0.00 0.00 1840.00
1990 0.00 0.00 0.00 51.00 118.50 268.50 572.50 544.50 393.50 13.50 4.50 0.00 1966.50
1991 0.00 0.00 0.00 37.50 98.00 213.00 457.00 502.00 355.00 131.50 0.00 0.00 1794.00
1992 0.00 0.00 35.00 89.50 284.50 428.50 469.00 526.50 164.00 69.00 0.00 0.00 a 2066.00
1993 0.00 0.00 0.00 11.00 309.50 251.50 310.00 449.50 335.50 99.50 0.00 0.00 1766.50
1994 0.00 0.00 15.00 84.00 231.00 250.00 533.50 486.50 363.00 53.50 0.00 0.00 2016.50
1995 0.00 0.00 5.00 52.50 269.00 328.50 513.00 319.00 426.00 16.00 1.00 0.00 1930.00
1996 0.00 0.00 0.00 35.50 48.00 271.00 542.00 494.00 199.00 80.50 0.00 0.00 1670.00
1997 0.00 0.00 0.00 z 10.00 186.50 224.00 395.00 535.00 0.00 z 18.00 0.00 0.00 1368.50
1998 0.00 0.00 1.50 64.00 203.50 351.00 580.00 547.00 415.00 60.50 0.00 0.00 2222.50
1999 0.00 0.00 1.00 34.50 83.50 184.50 396.50 466.50 264.50 36.00 0.00 0.00 1467.00
2000 0.00 0.00 0.00 50.00 100.50 295.50 407.00 421.50 230.00 32.50 0.00 0.00 1537.00
2001 0.00 0.00 2.00 42.50 164.82 a 230.00 435.50 481.00 297.00 43.50 0.00 0.00 1696.32
2002 0.00 0.00 0.00 8.50 92.50 330.50 467.50 477.50 271.50 62.50 0.00 0.00 1710.50
2003 0.00 0.00 0.00 27.00 156.00 388.00 551.00 546.50 354.00 115.50 0.00 0.00 2138.00
2004 0.00 0.00 10.50 88.50 177.50 384.50 570.50 556.00 207.00 99.50 0.00 0.00 2094.00
2005 0.00 0.00 0.50 109.00 266.00 239.00 463.50 538.50 235.50 45.50 0.00 0.00 1897.50
2006 0.00 0.00 1.00 33.00 176.00 344.00 538.50 487.00 337.00 59.00 5.00 0.00 1980.50
2007 0.00 0.00 0.00 22.00 168.50 242.00 497.00 423.50 270.50 11.00 0.00 2.50 1637.00
2008 0.00 0.00 0.00 8.50 154.00 200.00 443.50 455.00 260.50 41.50 0.00 0.00 1563.00
2009 0.00 0.00 0.00 22.00 0.00 z 0.00 z 0.00 z 478.50 331.50 27.50 0.00 0.00 859.50
2010 0.00 0.00 2.50 34.00 102.00 236.50 481.00 488.00 259.50 85.50 0.00 0.00 1689.00
2011 0.00 0.00 0.00 0.00 56.00 218.50 332.00 461.50 365.50 25.50 0.00 a 0.00 1459.00
2012 0.00 0.00 0.00 35.00 142.00 167.00 437.50 559.50 354.00 77.50 5.50 0.00 1778.00
2013 0.00 0.00 1.50 7.50 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
Period of Record Statistics
MEAN 0.00 0.00 2.16 37.51 156.94 282.26 456.45 466.64 282.81 61.09 1.03 0.05 1760.68
S.D. 0.00 0.00 5.60 28.64 64.56 69.95 74.99 69.20 75.97 35.97 2.92 0.34 207.15
SKEW 0.00 0.00 3.82 0.82 0.60 0.40 0.40 0.15 0.08 0.66 5.27 6.57 0.63
MAX 0.00 0.00 35.00 116.50 374.50 445.00 711.50 625.00 438.50 179.50 23.00 2.50 2480.50
MIN 0.00 0.00 0.00 0.00 31.52 148.00 310.00 319.00 125.00 7.23 0.00 0.00 1370.50
NO YRS 90 91 89 91 91 90 88 93 91 92 90 89 73