date! ,

Monthly Total Growing Degree Days

(a vali)

Base Temperature = 50 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1893 0.00 0.00 0.00 17.00 176.00 0.00 z 692.00 589.50 429.50 59.50 17.50 0.00 1981.00
1894 0.00 0.00 21.00 93.50 305.00 599.50 766.50 687.00 417.93 a 68.00 f 0.00 z 0.00 2890.43
1895 0.00 1.00 10.50 152.00 260.00 424.50 601.50 596.50 457.00 60.00 0.00 0.00 2563.00
1896 0.00 0.00 0.00 z 0.00 z 308.00 441.00 604.50 e 614.00 253.50 47.50 0.00 a 0.00 2268.50
1897 0.00 0.00 z 0.00 54.00 231.00 430.00 708.35 a 494.00 617.78 c 156.50 1.00 0.00 2692.63
1898 0.00 0.00 3.50 36.50 186.53 b 514.00 691.00 679.50 391.50 26.50 0.00 0.00 2529.03
1899 0.00 0.00 b 0.00 138.10 a 278.50 513.50 663.50 679.50 291.00 79.00 6.00 0.00 b 2649.10
1900 0.00 0.00 3.50 137.00 400.50 499.50 622.00 741.50 0.00 z 0.00 z 0.00 0.00 2404.00
1901 0.00 0.00 0.00 76.00 196.50 387.00 765.50 619.50 278.50 71.00 0.00 0.00 2394.00
1902 0.00 0.00 a 0.00 33.00 275.00 280.50 536.00 434.50 136.50 81.00 0.00 0.00 z 1776.50
1903 0.00 z 0.00 g 3.00 57.50 275.90 a 420.50 585.79 b 550.25 a 311.00 53.50 l 10.00 c 0.00 b 2213.94
1904 0.00 a 0.00 0.00 a 9.81 d 233.53 a 417.50 592.88 c 580.00 370.86 a 159.00 10.00 0.00 b 2373.58
1905 0.00 0.00 27.12 c 59.48 a 140.07 d 424.20 e 559.00 701.50 431.79 b 130.72 a 0.00 b 0.00 c 2473.88
1906 0.00 b 0.00 b 0.00 a 60.50 i 277.00 391.00 544.57 a 632.63 d 366.43 b 66.65 a 0.00 a 0.00 2278.27
1907 0.00 a 0.00 b 29.40 b 3.00 i 82.67 a 388.93 b 568.50 601.92 a 290.50 63.15 d 3.00 0.00 2028.06
1908 0.00 0.00 0.00 a 148.50 224.20 c 410.00 c 597.00 501.50 534.31 a 113.50 0.50 0.00 c 2529.51
1909 0.00 j 0.00 g 0.00 13.27 d 210.80 a 478.97 a 603.47 a 723.85 a 315.58 d 91.81 e 32.22 c 0.00 g 2469.96
1910 0.00 d 0.00 d 103.52 c 116.67 c 86.69 d 346.00 g 0.00 z 533.20 a 298.39 b 228.50 0.00 z 0.00 1366.96
1911 0.00 a 0.00 b 5.00 48.10 a 369.79 c 546.00 f 636.00 489.36 c 200.00 f 29.50 0.00 f 0.00 f 1577.75
1912 0.00 a 0.00 b 0.00 a 49.14 a 171.07 d 274.00 i 453.00 h 494.21 e 263.28 a 52.00 h 2.68 b 0.00 e 980.38
1913 0.00 a 0.00 c 0.00 b 84.50 175.27 e 465.50 f 564.00 663.92 a 357.12 d 0.00 z 0.00 f 0.00 c 1844.80
1914 0.00 d 0.00 z 0.00 c 80.77 d 213.00 339.50 i 703.50 509.43 a 257.22 c 115.22 a 5.40 e 0.00 m 1884.54
1915 0.00 z 0.00 b 0.00 e 166.07 b 80.48 e 240.00 f 421.08 a 394.45 b 253.45 a 64.67 b 6.00 i 0.00 k 1380.20
1916 0.00 c 0.00 z 0.00 f 17.14 b 213.12 c 370.00 c 890.50 645.00 292.76 a 57.02 c 0.00 z 0.00 z 2485.54
1917 0.00 z 0.00 b 1.72 d 8.50 128.81 b 373.00 712.48 a 534.23 a 0.00 z 0.00 z 5.19 d 0.00 e 1763.94
1918 0.00 0.00 b 20.48 c 4.00 275.38 a 407.50 f 600.88 a 637.57 a 204.44 c 155.00 e 0.00 z 0.00 z 1897.76
1919 0.00 e 0.00 a 6.31 d 30.56 c 205.63 a 415.50 h 714.50 584.87 a 408.50 68.09 c 0.00 z 0.00 z 2018.46
1920 0.00 z 0.00 z 0.00 z 0.00 z 139.00 l 460.00 c 585.42 e 507.37 a 383.00 213.79 b 0.00 c 0.00 a 2149.58
1921 0.00 c 0.50 18.50 96.43 b 304.50 705.00 d 767.77 a 608.78 b 356.25 b 94.55 a 0.00 c 0.00 b 2952.27
1922 0.00 h 0.00 b 2.30 d 14.44 c 221.98 c 507.69 d 512.57 b 717.13 a 560.17 a 187.03 a 3.00 z 0.00 2723.32
1923 0.00 a 0.00 c 0.00 u 64.00 f 271.25 e 561.21 a 780.50 561.44 d 423.50 94.00 0.00 0.00 c 2691.90
1924 0.00 b 0.00 a 0.00 c 84.64 b 115.70 c 384.11 b 597.55 b 625.34 b 238.85 d 97.00 m 0.58 d 0.00 a 2046.77
1925 0.00 a 0.00 a 0.00 z 117.50 h 260.63 d 479.40 e 650.47 b 336.00 r 523.45 a 9.00 i 0.00 f 0.00 a 1913.94
1926 0.00 b 0.00 a 4.13 a 103.97 a 429.35 a 459.64 b 742.93 b 634.47 a 269.40 e 94.11 c 0.00 0.00 a 2738.00
1927 0.00 h 0.00 a 3.00 46.55 a 141.10 b 455.89 b 463.00 f 518.22 a 449.42 d 113.00 f 0.00 a 0.00 c 1614.19
1928 0.00 c 0.00 a 25.46 c 20.00 c 303.59 b 408.21 b 654.88 c 653.77 c 305.56 c 127.00 0.00 c 0.00 2498.46
1929 0.00 0.00 b 0.00 60.00 194.00 400.50 641.00 626.50 191.00 0.00 z 0.00 0.00 a 2113.00
1930 0.00 0.00 z 5.54 c 110.00 248.00 505.00 917.50 804.50 388.50 153.50 4.00 0.00 3136.54
1931 0.00 0.00 0.00 146.50 275.50 790.71 b 888.50 747.00 596.00 160.50 18.00 0.00 3622.71
1932 0.00 0.00 b 0.00 a 53.00 342.00 622.00 820.50 729.50 371.00 82.00 0.00 0.00 a 3020.00
1933 0.00 d 0.00 0.00 76.61 b 265.05 a 873.00 837.00 637.50 570.50 138.00 2.59 a 0.00 a 3400.24
1934 0.00 0.00 a 0.52 a 97.24 a 685.00 385.00 l 932.50 713.00 a 289.66 a 251.50 6.43 b 0.00 a 2975.84
1935 0.00 0.00 10.00 49.00 110.50 424.29 b 965.00 731.08 a 410.77 d 113.15 a 0.00 0.00 2813.79
1936 0.00 0.00 0.00 a 59.50 434.50 607.24 a 1045.50 862.00 501.00 85.50 0.00 a 0.00 a 3595.24
1937 0.00 0.00 a 0.00 39.50 337.00 486.50 849.00 893.00 435.50 87.50 4.00 0.00 3132.00
1938 0.00 z 0.00 a 3.00 129.83 a 197.50 575.00 817.00 865.00 500.50 303.80 a 16.50 0.00 3408.13
1939 0.00 0.00 d 58.50 99.00 493.00 570.50 861.28 a 690.50 538.50 124.52 a 2.00 0.00 3437.80
1940 0.00 0.00 0.00 38.50 253.00 536.00 835.00 621.50 530.00 229.50 3.50 0.00 3047.00
1941 0.00 0.00 0.00 112.00 423.50 549.00 795.00 799.00 428.00 110.50 3.00 4.00 3224.00
1942 0.00 0.00 4.00 181.00 208.50 491.50 680.50 661.50 296.50 192.00 0.00 0.00 2715.50
1943 0.00 0.00 43.50 86.00 210.00 536.00 782.00 717.00 302.00 150.50 0.00 0.00 2827.00
1944 0.00 0.00 0.00 12.00 450.50 535.50 654.50 617.00 330.50 121.00 18.00 0.00 a 2739.00
1945 0.00 0.00 a 36.50 40.34 a 175.00 332.00 636.00 639.00 340.50 109.50 0.00 a 0.00 l 2308.84
1946 0.00 e 0.00 51.50 175.71 b 192.31 d 566.90 a 699.00 558.50 324.50 73.50 0.00 d 0.00 2641.93
1947 0.00 0.00 0.50 h 42.93 a 162.75 a 412.22 c 691.00 893.00 444.31 a 300.70 a 0.00 0.00 2946.91
1948 0.00 0.00 5.00 145.00 260.00 448.50 721.50 685.00 518.00 70.27 a 5.50 0.00 c 2858.77
1949 0.00 0.00 0.00 82.50 b 395.50 487.50 g 821.00 782.48 b 261.50 103.00 8.00 0.00 2453.98
1950 0.00 0.00 0.00 20.36 b 185.50 502.00 563.17 a 539.06 d 340.34 a 155.00 2.00 0.00 b 2307.42
1951 0.00 a 0.00 0.00 58.00 266.71 b 364.14 a 623.10 a 594.68 a 212.78 c 136.00 0.00 0.00 b 2255.41
1952 0.00 0.00 a 0.00 154.62 d 277.50 647.50 758.00 668.00 467.50 63.00 5.89 b 0.00 c 3042.01
1953 0.00 0.00 a 6.50 38.50 281.50 607.24 a 723.33 a 713.53 b 400.00 261.50 20.50 0.00 3052.61
1954 0.00 0.00 0.00 124.50 204.00 0.00 z 830.59 b 689.50 380.00 61.50 9.50 0.00 2299.59
1955 0.00 0.00 1.03 a 180.50 432.00 485.50 913.00 869.50 439.50 155.00 0.00 0.00 3476.03
1956 0.00 0.00 0.00 11.50 333.00 739.00 644.50 628.50 358.50 245.50 1.50 0.00 2962.00
1957 0.00 0.00 0.00 92.07 a 199.50 456.50 844.00 671.50 263.50 98.00 0.00 0.00 j 2625.07
1958 0.00 0.00 0.00 43.50 382.50 443.00 639.50 790.50 467.59 a 215.34 c 2.00 0.00 a 2983.93
1959 0.00 b 0.00 a 0.00 a 83.89 c 306.50 390.50 l 758.47 a 825.63 a 358.39 b 20.48 c 0.00 z 0.00 z 2353.36
1960 0.00 z 0.00 z 0.00 z 90.00 f 269.00 444.00 735.50 695.50 356.00 116.50 6.50 0.00 2623.00
1961 0.00 0.00 0.52 a 30.50 204.00 571.55 a 679.50 706.50 294.00 109.50 2.50 0.00 2598.57
1962 0.00 a 0.00 0.00 90.00 352.50 472.50 610.00 602.00 244.00 148.00 3.50 3.62 a 2526.12
1963 0.00 0.00 41.85 a 69.50 f 290.33 e 637.20 e 527.50 i 671.00 438.62 a 292.00 0.00 0.00 2371.00
1964 0.00 0.00 0.00 109.00 370.00 588.50 847.50 601.50 346.50 103.50 10.00 0.00 2976.50
1965 0.00 0.00 0.00 61.00 339.50 541.00 706.00 675.50 149.50 112.50 5.50 0.00 2590.50
1966 0.00 0.00 19.00 25.00 254.50 546.50 896.50 583.00 312.00 89.50 0.00 0.00 2726.00
1967 0.00 0.00 48.00 65.00 223.50 487.00 664.50 621.00 356.00 106.00 0.00 0.00 2571.00
1968 0.00 0.00 55.00 73.50 154.00 577.50 686.00 692.50 329.00 104.50 0.00 0.00 2672.00
1969 0.00 0.00 0.00 79.00 331.00 377.50 728.50 741.00 404.50 39.50 2.50 0.00 2703.50
1970 0.00 0.00 0.00 73.50 366.50 592.50 792.50 747.50 420.50 94.00 0.00 0.00 3087.00
1971 0.00 0.00 4.50 117.50 215.50 653.50 610.50 770.50 352.00 120.00 0.00 0.00 2844.00
1972 0.00 0.00 0.00 23.00 324.50 541.50 628.00 646.00 370.00 72.00 0.00 z 0.00 z 2605.00
1973 0.00 0.00 0.00 42.50 246.50 578.50 741.50 799.00 290.50 152.00 4.00 0.00 2854.50
1974 0.00 0.00 1.00 101.50 220.00 513.00 905.50 594.00 322.50 136.50 0.00 0.00 2794.00
1975 0.00 0.00 0.00 31.50 333.50 530.00 863.00 725.00 272.50 180.50 20.00 0.00 2956.00
1976 0.00 0.00 12.50 114.50 298.00 663.50 868.00 845.00 453.50 93.50 0.50 0.00 a 3349.00
1977 0.00 b 0.00 2.50 190.00 521.50 608.00 859.73 a 595.50 380.50 53.50 6.50 0.00 3217.73
1978 0.00 0.00 14.50 35.00 303.50 553.00 699.00 680.50 539.50 87.50 26.00 0.00 2938.50
1979 0.00 0.00 0.00 73.00 235.50 532.50 709.00 610.50 452.50 68.00 0.00 0.00 2681.00
1980 0.00 0.00 0.00 145.50 350.50 596.90 a 795.50 685.50 437.50 109.50 1.00 0.00 c 3121.90
1981 0.00 0.00 9.82 a 189.50 243.50 584.50 743.00 611.00 384.00 54.50 5.00 0.00 2824.82
1982 0.00 0.00 0.00 96.50 366.50 409.50 742.50 654.00 307.00 47.00 0.00 0.00 a 2623.00
1983 0.00 0.00 10.50 24.00 194.50 486.50 797.50 830.00 410.50 64.00 16.00 0.00 2833.50
1984 0.00 0.00 0.00 25.50 233.00 552.00 692.50 706.50 303.50 183.50 0.50 0.00 2697.00
1985 0.00 0.00 5.00 189.00 424.00 428.50 698.50 562.50 327.50 53.00 1.00 0.00 2689.00
1986 0.00 a 0.00 a 35.50 48.00 320.50 604.50 735.50 520.05 b 301.03 a 0.00 z 0.00 l 0.00 2565.09
1987 0.00 0.00 18.00 210.50 487.50 656.50 791.00 591.50 348.50 48.50 10.50 0.00 3162.50
1988 0.00 b 0.00 1.00 80.00 425.50 769.00 824.00 713.00 337.50 29.00 0.00 0.00 b 3179.00
1989 0.00 0.00 a 2.00 116.00 288.00 490.50 811.00 672.00 320.50 130.50 2.07 a 0.00 2832.57
1990 0.00 0.00 a 6.50 116.50 229.50 552.00 640.50 681.00 466.00 101.00 11.50 0.00 2804.50
1991 0.00 0.00 5.00 97.24 a 370.00 669.00 705.00 698.00 365.00 80.00 0.00 0.00 2989.24
1992 0.00 0.00 3.00 44.00 312.50 454.50 456.50 444.00 234.00 95.00 0.00 0.00 2043.50
1993 0.00 0.00 0.00 a 12.50 195.50 365.50 329.50 o 605.00 171.00 64.50 0.00 0.00 1414.00
1994 0.00 0.00 4.50 69.00 380.00 539.00 561.00 551.00 396.50 97.00 3.00 0.00 2601.00
1995 0.00 0.00 5.34 b 0.00 156.00 559.00 731.00 739.50 346.00 68.00 0.00 0.00 2604.84
1996 0.00 0.00 0.00 37.50 220.50 583.50 593.50 625.00 294.50 99.50 0.00 0.00 2454.00
1997 0.00 0.00 3.50 50.50 163.00 597.50 705.50 605.50 416.00 197.00 0.00 0.00 2738.50
1998 0.00 a 0.00 8.00 63.00 407.50 443.50 749.00 695.50 524.50 78.50 0.00 0.00 2969.50
1999 0.00 0.00 19.00 62.50 268.50 536.50 797.00 676.50 296.50 71.50 22.50 0.00 2750.50
2000 0.00 9.50 38.00 70.00 297.50 478.50 725.50 669.00 402.00 126.00 3.50 0.00 2819.50
2001 0.00 0.00 0.00 107.50 283.00 569.50 813.50 705.00 355.00 97.00 37.00 0.00 2967.50
2002 0.00 0.00 0.00 110.00 219.50 640.50 875.50 646.00 424.50 24.00 0.00 0.00 2940.00
2003 0.00 0.00 9.00 117.00 195.00 466.50 695.50 707.00 335.00 158.50 1.00 0.00 2684.50
2004 0.00 0.00 25.00 82.50 253.00 418.00 607.00 457.50 459.50 78.50 5.50 0.00 2386.50
2005 0.00 0.00 g 12.00 97.50 235.08 a 579.00 743.00 633.50 481.00 112.63 a 12.50 0.00 2906.22
2006 0.00 0.00 0.00 121.00 261.00 537.50 767.50 658.00 213.00 99.50 10.50 0.00 2668.00
2007 0.00 0.00 12.00 87.50 354.00 533.00 734.00 649.00 380.50 79.50 1.00 0.00 2830.50
2008 0.00 0.00 0.00 21.00 147.50 435.50 674.50 630.50 341.50 56.00 16.50 0.00 2323.00
2009 0.00 0.00 2.00 39.50 219.00 415.00 503.50 519.50 369.50 8.00 4.50 0.00 2080.50
2010 0.00 0.00 11.00 108.50 231.50 499.00 675.00 708.50 270.00 127.50 4.50 0.00 2635.50
2011 0.00 a 0.00 e 0.00 b 12.93 a 213.79 b 456.43 b 786.88 a 585.38 a 251.25 b 169.98 a 0.00 0.00 a 2476.65
2012 0.00 0.00 103.50 93.50 296.50 609.00 896.00 654.00 390.50 64.00 0.00 0.00 3107.00
2013 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 z 0.00
Period of Record Statistics
MEAN 0.00 0.10 9.40 77.87 271.48 516.05 719.33 652.91 365.30 112.46 4.52 0.07 2804.86
S.D. 0.00 0.90 18.28 49.10 98.18 101.15 114.00 97.92 96.20 61.04 7.21 0.52 319.96
SKEW 0.00 10.24 3.12 0.59 0.89 0.62 0.08 0.11 0.23 1.13 2.23 7.17 0.27
MAX 0.00 9.50 103.52 210.50 685.00 873.00 1045.50 893.00 617.78 303.80 37.00 4.00 3622.71
MIN 0.00 0.00 0.00 0.00 80.48 280.50 421.08 394.45 136.50 8.00 0.00 0.00 2043.50
NO YRS 112 112 113 112 119 107 115 119 117 109 107 108 78