date! ,

Monthly Total Growing Degree Days

(a vali)

Base Temperature = 50 F

File last updated on Oct 29, 2012
*** Note *** Provisional Data *** After Year/Month 201210
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
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 337.50 p 488.00 225.50 68.00 0.00 0.00 781.50
1902 0.00 0.00 0.50 6.00 167.50 235.00 551.00 115.00 v 145.00 3.50 2.50 0.00 1111.00
1903 0.00 0.00 0.00 17.00 169.50 279.00 450.50 305.50 218.00 44.00 12.00 0.00 1495.50
1904 0.00 0.00 0.00 7.50 116.00 370.71 b 451.80 d 375.00 168.00 34.00 6.50 0.00 1529.51
1905 0.00 0.00 2.50 18.50 91.50 304.50 466.00 481.00 295.50 71.50 i 0.00 0.00 1659.50
1906 0.00 0.00 0.00 58.00 127.50 373.00 523.90 a 514.50 388.00 103.85 a 0.00 0.00 2088.75
1907 0.00 0.00 0.00 0.00 37.50 427.50 359.08 a 274.50 206.50 17.50 0.00 0.00 1322.58
1908 0.00 h 0.00 a 0.00 p 42.93 a 172.00 388.00 513.00 424.50 440.00 120.38 a 0.00 0.00 2100.81
1909 0.00 a 0.00 0.00 0.00 105.50 421.50 463.50 547.50 211.50 83.50 0.00 0.00 a 1833.00
1910 9.00 h 0.00 d 56.50 53.28 a 48.00 h 505.34 a 562.00 453.67 e 199.66 a 117.50 0.00 e 0.00 e 1947.95
1911 0.00 b 0.00 l 0.00 v 46.50 279.50 503.28 a 507.00 418.00 196.00 29.00 0.00 0.00 1979.28
1912 0.00 0.00 0.00 a 19.50 179.00 323.79 a 514.50 268.50 262.00 70.00 0.00 a 0.00 1637.29
1913 0.00 0.00 0.00 a 75.00 a 101.00 445.20 e 467.07 a 498.00 245.00 99.50 1.50 0.00 1932.27
1914 0.00 0.00 0.00 12.00 230.50 331.00 570.00 382.50 245.00 157.00 0.52 a 0.00 1928.52
1915 0.00 0.00 0.00 148.00 82.00 209.50 349.00 301.50 222.50 18.50 0.00 0.00 1331.00
1916 0.00 0.00 0.00 0.00 114.00 188.00 739.00 478.50 175.50 56.00 0.50 0.00 b 1751.50
1917 0.00 0.00 0.00 2.00 74.00 188.00 492.00 298.50 143.50 3.50 0.00 0.00 a 1201.50
1918 0.00 0.00 1.50 7.50 168.00 309.64 b 425.00 448.50 66.50 23.00 0.00 0.00 1449.64
1919 0.00 0.00 0.00 3.50 172.00 368.50 f 552.00 413.50 220.00 41.00 0.00 0.00 a 1402.00
1920 0.00 0.00 0.00 0.00 140.00 349.50 414.00 417.50 337.50 195.82 a 0.00 0.00 1854.32
1921 0.00 0.00 0.00 87.50 224.00 528.50 657.50 413.00 291.00 11.00 0.00 0.00 2212.50
1922 0.00 0.00 0.00 9.00 377.50 322.50 g 468.00 512.00 332.50 93.00 1.00 0.00 1793.00
1923 0.00 c 0.00 d 0.00 46.00 227.50 519.00 601.00 393.50 268.50 63.50 0.00 0.00 2119.00
1924 0.00 0.00 0.00 1.00 35.00 277.50 457.00 456.06 e 140.00 155.50 0.50 0.00 1522.56
1925 0.00 0.00 a 1.00 52.50 131.00 418.50 503.50 611.50 290.50 0.00 0.00 0.00 2008.50
1926 0.00 0.00 0.00 a 35.00 240.00 250.00 559.00 442.00 117.00 32.55 a 0.00 0.00 1675.55
1927 0.00 0.00 0.00 22.50 73.00 325.00 292.50 j 311.00 386.00 35.77 e 0.00 d 0.00 1153.27
1928 0.00 0.00 0.50 5.50 174.00 228.00 525.00 437.00 186.43 b 89.50 0.00 0.00 1645.93
1929 0.00 0.00 0.00 28.00 148.00 333.50 566.00 466.50 209.00 45.47 a 0.00 0.00 1796.47
1930 0.00 0.00 1.00 57.50 220.00 431.00 578.00 569.50 258.00 113.00 15.50 0.00 2243.50
1931 0.00 0.00 0.00 65.50 164.50 510.50 648.50 460.50 401.50 79.50 24.00 0.00 2354.50
1932 0.00 0.00 0.00 17.50 193.00 467.00 542.00 542.00 220.50 33.50 0.00 0.00 2015.50
1933 0.00 0.00 0.00 8.50 232.50 568.50 631.50 471.50 282.50 8.00 7.50 0.00 2210.50
1934 0.00 0.00 0.00 29.00 h 292.00 423.50 561.00 386.50 180.50 94.00 0.00 0.00 1937.50
1935 0.00 0.00 0.00 35.50 105.00 228.50 695.00 496.00 179.00 39.50 0.00 0.00 1778.50
1936 0.00 0.00 0.00 a 5.00 251.10 a 298.50 697.50 511.50 333.00 28.50 0.00 0.00 2125.10
1937 0.00 0.00 0.00 2.50 180.32 a 376.00 601.50 654.00 250.00 34.00 0.00 0.00 2098.32
1938 0.00 0.00 7.00 44.00 111.50 320.00 513.50 601.00 243.50 136.00 20.50 0.00 1997.00
1939 0.00 0.00 0.00 33.00 269.50 451.50 605.00 502.41 b 318.00 64.50 0.00 0.00 2243.91
1940 0.00 0.00 0.00 18.00 88.00 310.00 573.00 466.50 331.00 68.00 0.00 0.00 1854.50
1941 0.00 0.00 0.00 108.00 301.00 429.00 644.00 470.50 315.00 30.00 0.00 0.00 2297.50
1942 0.00 0.00 0.00 154.00 115.50 376.50 475.00 492.50 224.50 118.00 2.07 a 0.00 a 1958.07
1943 0.00 l 0.00 e 0.00 20.36 b 147.25 a 415.50 601.50 497.72 d 77.50 f 107.50 0.00 0.00 1789.83
1944 0.00 0.00 0.00 8.00 296.00 417.50 533.72 a 543.50 231.00 59.50 23.00 0.00 2112.22
1945 0.00 0.00 38.50 47.00 63.50 282.50 455.00 473.00 249.50 57.50 0.00 0.00 1666.50
1946 0.00 0.00 27.50 48.00 147.00 386.50 573.50 418.50 272.59 a 96.00 0.00 0.00 1969.59
1947 0.00 0.00 0.00 12.50 81.50 311.00 567.00 725.50 292.00 188.00 h 0.00 0.00 1989.50
1948 0.00 0.00 0.00 75.00 153.00 360.50 592.50 556.50 350.50 49.00 4.00 0.00 2141.00
1949 0.00 0.00 0.00 76.03 a 223.20 a 528.00 613.80 a 594.00 167.50 107.50 1.00 0.00 2311.03
1950 0.00 0.00 0.00 0.00 146.00 407.50 427.00 281.50 198.00 105.50 5.00 0.00 1570.50
1951 0.00 0.00 0.00 a 27.00 277.97 a 308.00 530.10 a 363.00 158.50 76.00 0.00 b 0.00 1740.57
1952 0.00 0.00 0.00 a 124.00 174.00 450.50 620.00 481.53 a 321.00 21.50 0.50 0.00 2193.03
1953 0.00 0.00 0.00 6.50 183.50 451.50 561.50 585.50 40.00 u 169.00 12.60 e 0.00 1970.10
1954 0.00 0.00 0.00 a 12.00 109.00 443.28 a 503.50 431.50 162.50 29.50 1.00 0.00 1692.28
1955 0.00 0.00 0.00 d 77.50 232.50 b 411.43 b 0.00 z 602.84 c 215.19 d 0.00 z 0.00 z 0.00 1539.46
1956 0.00 0.00 0.00 a 0.00 129.50 485.50 403.50 455.50 152.00 114.50 34.14 a 0.00 1774.64
1957 0.00 a 0.00 a 0.00 88.50 144.50 368.00 600.50 490.50 190.50 56.50 0.00 0.00 1939.00
1958 0.00 0.00 0.00 43.50 128.50 234.50 464.50 444.50 259.50 66.50 0.00 0.00 1641.50
1959 0.00 0.00 a 0.00 6.00 251.50 440.00 559.50 583.32 a 285.00 15.00 0.00 0.00 2140.32
1960 0.00 0.00 0.00 31.00 162.50 306.00 500.00 518.00 291.00 67.00 0.00 0.00 1875.50
1961 0.00 0.00 0.00 9.00 129.50 423.21 b 510.00 545.00 266.50 108.50 1.00 0.00 1992.71
1962 0.00 0.00 0.00 17.00 279.00 357.00 438.00 467.00 176.00 104.50 0.00 0.00 1838.50
1963 0.00 0.00 2.50 31.50 139.50 435.00 592.00 416.00 272.00 241.00 0.00 0.00 2129.50
1964 0.00 0.00 0.00 46.50 254.00 388.50 604.00 385.50 223.00 86.50 21.00 0.00 2009.00
1965 0.00 0.00 0.00 21.00 242.00 0.00 z 434.00 409.00 100.50 77.00 2.00 0.00 1285.50
1966 0.00 0.00 2.00 1.50 119.50 451.00 654.50 411.50 234.00 53.00 0.00 0.00 1927.00
1967 0.00 0.00 5.00 22.50 92.50 385.00 479.50 381.00 262.50 62.00 0.00 0.00 1690.00
1968 0.00 0.00 1.00 39.00 106.50 341.00 534.00 471.50 249.50 133.00 0.00 0.00 1875.50
1969 0.00 0.00 0.00 28.50 221.00 186.50 497.50 583.50 255.50 61.47 b 0.00 0.00 1833.97
1970 0.00 0.00 0.00 77.50 149.00 461.00 630.50 533.00 292.00 63.50 0.00 0.00 2206.50
1971 0.00 0.00 0.00 26.00 101.50 485.69 a 211.00 o 384.50 295.00 126.50 0.00 0.00 1419.19
1972 0.00 0.00 0.00 10.50 285.00 343.50 465.50 485.00 168.10 a 30.00 0.00 0.00 1787.60
1973 0.00 0.00 0.00 43.00 28.00 n 273.50 j 335.50 j 493.42 a 188.00 121.50 0.00 0.00 845.92
1974 0.00 0.00 0.00 a 36.21 a 87.00 242.50 563.54 c 373.50 84.50 52.50 0.00 0.00 1439.74
1975 0.00 0.00 0.00 0.50 231.00 333.00 548.50 416.50 113.50 60.50 23.00 0.00 1726.50
1976 0.00 0.00 a 3.50 59.00 99.50 415.50 456.50 447.00 182.07 a 49.50 0.00 0.00 1712.57
1977 0.00 0.00 c 0.50 98.50 406.50 297.00 520.00 210.00 112.50 14.50 5.00 0.00 1664.50
1978 0.00 0.00 0.00 4.50 229.50 304.50 423.00 439.00 285.00 33.00 4.50 0.00 1723.00
1979 0.00 0.00 0.00 20.00 67.50 274.00 477.50 344.00 181.50 12.00 0.00 0.00 1376.50
1980 0.00 0.00 0.00 0.00 z 0.00 z 205.00 i 451.57 a 386.00 128.00 11.50 0.00 0.00 977.07
1981 0.00 0.00 0.00 4.00 81.50 341.00 480.00 472.00 153.00 14.50 8.00 0.00 1554.00
1982 0.00 0.00 0.00 26.50 256.50 157.00 491.50 311.00 147.00 25.00 0.00 0.00 1414.50
1983 0.00 0.00 0.00 9.00 55.00 338.50 624.50 543.00 251.00 44.50 0.00 0.00 1865.50
1984 0.00 0.00 0.00 20.00 84.50 395.50 436.50 516.50 137.50 79.00 0.00 0.00 1669.50
1985 0.00 0.00 0.00 94.50 177.50 244.50 437.50 344.00 229.50 22.50 0.00 j 0.00 1550.00
1986 0.00 0.00 5.00 63.00 244.38 a 334.00 535.50 347.00 185.50 27.50 0.00 0.00 1741.88
1987 0.00 0.00 6.00 89.50 230.50 454.00 552.00 430.50 247.00 8.00 6.00 0.00 2023.50
1988 0.00 b 0.00 0.00 a 5.00 281.50 427.50 579.00 502.00 177.50 30.50 0.00 z 0.00 2003.00
1989 0.00 0.00 a 0.00 10.50 163.00 264.83 a 528.00 445.50 201.50 80.50 0.00 0.00 1693.83
1990 0.00 0.00 0.00 112.00 53.00 363.00 445.00 430.50 197.50 9.00 12.50 0.00 1622.50
1991 0.00 0.00 0.00 63.50 305.50 441.00 443.00 484.00 162.00 9.00 0.00 0.00 1908.00
1992 0.00 0.00 0.00 5.00 212.50 241.00 265.00 283.00 143.50 43.00 0.00 0.00 1193.00
1993 0.00 0.00 0.00 0.00 110.00 247.50 462.50 453.50 55.00 17.00 0.00 0.00 1345.50
1994 0.00 0.00 0.00 18.50 167.50 389.50 428.00 342.00 272.50 53.50 0.00 0.00 1671.50
1995 0.00 0.00 4.00 0.00 81.00 474.50 484.50 547.00 174.00 55.50 0.00 0.00 1820.50
1996 0.00 0.00 0.00 4.00 87.50 366.50 350.50 445.00 202.00 33.50 0.00 0.00 1489.00
1997 0.00 0.00 0.00 2.00 27.50 432.00 450.50 314.50 208.50 99.00 0.00 0.00 1534.00
1998 0.00 0.00 1.50 30.50 255.50 391.50 547.50 529.50 328.00 45.50 0.00 0.00 2129.50
1999 0.00 0.00 0.00 10.00 219.50 362.00 573.50 426.00 211.50 11.00 12.50 0.00 1826.00
2000 0.00 0.00 7.00 14.00 165.00 238.00 465.50 457.50 188.00 93.00 14.50 0.00 1642.50
2001 0.00 0.00 0.00 25.00 167.50 405.50 509.00 522.50 187.00 35.50 16.00 0.00 1868.00
2002 0.00 0.00 0.00 33.00 96.50 387.00 640.00 468.00 295.00 30.00 0.00 0.00 1949.50
2003 0.00 0.00 0.00 15.50 95.00 320.50 486.50 522.50 288.00 77.00 0.00 0.00 1805.00
2004 0.00 0.00 0.00 13.00 79.00 252.50 427.00 274.00 326.00 51.00 0.00 0.00 1422.50
2005 0.00 0.00 4.00 52.00 113.50 476.00 553.00 476.00 314.50 0.00 z 0.00 0.00 1989.00
2006 0.00 0.00 0.00 51.00 197.50 381.50 651.00 493.50 167.50 41.00 0.50 0.00 1983.50
2007 0.00 0.00 5.00 46.00 243.00 452.50 545.50 504.00 277.00 127.50 0.00 0.00 2200.50
2008 0.00 0.00 0.00 a 21.00 62.00 313.50 496.50 419.00 236.50 43.00 21.50 0.00 1613.00
2009 0.00 0.00 0.00 9.00 100.50 317.50 325.50 381.50 332.00 0.00 0.00 0.00 1466.00
2010 0.00 0.00 3.00 44.00 263.50 334.00 576.00 557.50 119.50 69.50 5.00 0.00 a 1972.00
2011 0.00 0.00 0.00 a 9.50 129.50 331.00 627.00 487.50 196.00 145.00 0.00 0.00 1925.50
2012 0.00 0.00 78.00 9.50 201.50 427.50 629.50 427.00 169.50 12.00 j 0.00 z 0.00 z 1942.50
Period of Record Statistics
MEAN 0.00 0.00 2.43 32.65 166.48 364.69 522.49 452.63 227.41 63.35 3.04 0.00 1817.38
S.D. 0.00 0.00 10.17 33.14 77.44 87.79 83.88 89.37 73.66 45.51 6.68 0.00 270.46
SKEW 0.00 0.00 5.77 1.46 0.51 -0.14 -0.14 -0.11 0.25 1.06 2.51 0.00 -0.15
MAX 0.00 0.00 78.00 154.00 406.50 568.50 739.00 725.50 440.00 241.00 34.14 0.00 2354.50
MIN 0.00 0.00 0.00 0.00 27.50 157.00 265.00 210.00 55.00 0.00 0.00 0.00 1193.00
NO YRS 108 110 109 109 108 106 107 111 110 107 108 111 90