date! ,

Monthly Total Growing Degree Days

(a vali)

Base Temperature = 40 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
1915 0.00 0.00 0.00 319.50 288.50 514.50 673.00 607.50 502.00 185.00 18.10 a 0.00 3108.10
1916 0.00 0.00 0.00 87.50 333.50 518.00 996.00 801.00 436.50 215.00 19.50 0.00 3407.00
1917 0.00 0.00 0.00 55.00 225.50 535.50 817.00 634.00 391.50 38.50 26.00 0.00 2723.00
1918 0.00 z 0.00 21.38 b 66.00 489.00 633.00 764.50 762.50 295.00 203.50 54.00 0.00 3288.88
1919 0.00 0.00 15.50 95.00 397.00 796.00 846.50 721.50 549.00 148.50 0.00 0.00 a 3569.00
1920 0.00 a 0.00 38.00 43.50 393.50 691.00 712.00 682.50 584.50 366.50 2.00 0.00 3513.50
1921 0.00 0.00 16.00 226.50 519.77 a 808.50 977.50 741.50 574.82 b 211.00 2.50 0.00 4078.09
1922 0.00 d 0.00 m 1.00 78.00 593.00 687.00 746.00 788.00 586.50 255.00 56.50 0.00 3791.00
1923 0.00 c 0.00 0.00 134.00 478.29 c 778.50 895.00 629.82 a 564.50 183.50 0.00 z 0.00 z 3663.60
1924 0.00 z 0.00 k 0.00 67.24 a 178.00 575.17 a 760.00 682.00 d 382.50 366.12 b 20.40 e 0.00 3031.43
1925 0.00 z 0.00 17.50 189.50 258.00 655.50 753.00 788.43 a 558.21 b 56.50 8.00 0.00 3284.65
1926 0.00 0.00 a 0.00 67.50 422.50 478.50 735.00 686.17 e 361.03 a 155.50 0.50 0.00 2906.71
1927 0.00 a 0.00 a 10.00 95.00 281.50 514.00 694.00 566.00 545.00 187.00 7.00 0.00 2899.50
1928 0.00 e 0.00 9.00 53.00 401.50 495.00 a 782.50 724.50 359.50 202.00 20.50 0.00 3047.50
1929 0.00 0.00 0.50 112.00 292.00 541.50 782.50 683.00 421.00 128.00 7.00 0.00 b 2967.50
1930 0.00 a 7.00 5.00 129.31 a 418.00 670.00 826.50 846.50 550.86 a 284.68 a 71.00 0.00 3808.86
1931 0.00 1.50 0.00 168.00 337.50 760.00 886.50 674.00 605.50 265.00 55.50 0.00 3753.50
1932 0.00 0.50 0.00 90.50 341.00 700.00 796.00 719.50 349.50 100.00 11.50 0.00 b 3108.50
1933 0.00 0.00 0.00 79.50 427.00 861.96 b 889.18 a 710.50 562.00 93.00 31.50 0.00 3654.65
1934 0.00 0.00 0.00 a 60.50 556.50 706.50 791.05 c 652.50 384.00 228.50 24.50 0.00 3404.05
1935 0.00 c 0.00 a 5.00 84.00 256.00 479.50 951.50 748.50 401.00 146.73 a 0.00 0.00 a 3072.23
1936 0.00 0.00 0.00 29.50 499.21 b 544.50 933.62 a 766.50 549.50 101.00 5.00 0.00 3428.82
1937 0.00 0.00 0.00 42.00 394.00 608.28 a 867.50 862.50 452.50 124.00 7.50 0.00 z 3358.28
1938 0.00 a 0.00 58.50 146.00 393.00 619.00 809.00 821.50 450.00 265.00 55.00 0.00 3617.00
1939 0.00 0.00 21.81 d 84.50 500.13 a 682.00 807.50 729.50 473.00 170.50 0.00 3.10 a 3472.05
1940 0.00 0.00 0.00 72.00 293.47 a 630.00 a 814.50 715.00 531.00 194.50 13.00 0.00 3263.47
1941 0.00 0.00 0.00 217.50 510.50 663.00 825.50 700.00 529.66 a 203.50 16.55 a 3.00 3669.21
1942 0.00 0.00 2.58 a 190.50 276.50 f 621.00 702.00 703.00 390.50 226.00 12.50 0.00 2848.08
1943 0.00 0.00 9.00 52.00 310.50 718.50 870.58 a 764.50 338.00 162.23 a 0.00 0.00 3225.32
1944 1.03 a 0.00 0.00 42.93 a 487.50 708.50 772.00 750.50 455.50 121.42 a 62.00 0.00 3401.38
1945 0.00 0.00 80.00 82.00 212.00 464.50 693.50 700.60 a 428.00 99.00 11.00 0.00 a 2770.60
1946 0.00 a 0.00 62.00 156.00 298.00 627.50 818.50 687.50 383.00 194.50 3.00 3.50 3233.50
1947 0.00 0.00 a 0.00 39.00 225.50 533.00 767.50 914.50 484.50 354.50 15.50 0.00 3334.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 613.00 808.00 780.50 520.00 173.00 55.00 1.00 2950.50
1949 0.00 0.00 0.00 131.00 495.00 739.00 876.50 799.50 338.50 253.50 20.50 0.00 3653.50
1950 0.00 0.00 a 0.00 19.00 318.00 636.50 690.00 553.00 406.50 166.00 f 0.00 a 0.00 2623.00
1951 0.00 0.00 0.00 75.50 498.50 547.00 767.00 655.13 a 366.21 a 213.38 a 3.62 a 8.86 c 3135.20
1952 0.00 a 0.00 a 0.52 a 203.00 414.00 478.00 j 545.00 k 668.64 b 515.89 b 59.93 a 22.76 a 0.00 a 1884.74
1953 0.00 c 0.00 a 6.50 47.31 d 375.50 667.50 753.30 a 765.50 462.00 323.50 48.50 0.00 a 3449.61
1954 0.00 1.00 2.50 115.86 a 242.00 704.00 817.50 686.50 400.50 127.50 15.00 0.00 3112.36
1955 0.00 0.00 4.00 211.00 474.50 617.50 927.50 871.50 433.00 199.43 a 0.00 q 0.00 3738.43
1956 0.00 0.00 0.00 24.00 330.15 a 722.50 682.50 686.50 352.50 275.38 a 83.00 0.00 a 3156.53
1957 0.00 0.00 0.00 173.50 299.15 a 596.90 a 843.00 686.50 362.00 150.50 16.00 0.00 3127.55
1958 0.00 a 5.50 0.00 85.50 284.00 424.50 680.50 666.50 446.50 174.50 16.50 0.00 2784.00
1959 0.00 0.00 a 0.00 62.50 438.50 638.00 711.50 827.50 487.00 107.50 0.00 0.00 3272.50
1960 0.00 0.00 1.50 132.00 339.00 522.00 698.00 753.00 504.50 195.00 9.00 2.00 3156.00
1961 0.00 0.00 16.00 40.00 258.50 614.00 764.50 789.00 448.00 190.50 9.50 3.50 3133.50
1962 0.00 0.00 4.50 93.50 481.00 558.00 676.50 665.50 355.50 263.50 0.00 8.00 3106.00
1963 0.00 0.00 19.50 155.50 277.50 650.50 814.00 663.50 436.50 418.50 0.00 z 0.00 3435.50
1964 0.00 0.00 0.00 128.50 488.25 a 604.00 828.50 592.00 376.50 168.00 87.00 0.00 3272.75
1965 0.00 0.00 0.00 27.50 447.50 538.00 649.00 610.50 257.00 169.50 10.00 0.00 a 2709.00
1966 0.00 0.00 18.50 36.00 230.50 643.50 874.00 643.50 445.00 147.50 5.00 0.00 3043.50
1967 0.00 0.00 17.50 112.00 231.00 612.50 722.50 610.50 393.50 140.00 3.75 b 0.00 2843.25
1968 0.00 0.00 62.00 142.00 290.50 594.50 764.00 709.00 437.50 230.00 14.00 0.00 3243.50
1969 0.00 0.00 0.00 143.79 a 399.50 418.00 738.50 795.50 432.00 144.50 13.00 0.00 3084.79
1970 0.00 0.00 0.00 142.50 355.00 713.00 857.00 746.50 441.00 209.00 2.50 0.00 3466.50
1971 0.00 0.00 0.00 132.00 246.50 739.50 694.40 a 643.00 469.50 322.00 11.50 0.00 3258.40
1972 0.00 0.00 4.00 64.50 487.50 560.50 748.00 715.50 384.50 120.00 5.00 0.00 3089.50
1973 0.00 0.00 24.00 106.00 265.00 692.50 795.50 0.00 z 444.50 306.00 5.50 0.00 2639.00
1974 0.00 0.00 0.50 129.00 275.00 516.50 869.50 669.50 264.50 138.50 27.50 0.00 2890.50
1975 0.00 0.00 0.00 33.62 a 479.00 628.00 859.00 710.00 343.50 232.00 71.00 0.00 3356.12
1976 0.00 0.50 12.00 168.50 320.00 713.50 820.50 742.00 393.00 e 120.00 0.00 0.00 3290.00
1977 0.00 0.00 46.00 264.00 642.50 613.50 849.92 a 583.00 445.50 115.45 b 46.50 0.00 3606.36
1978 0.00 0.00 8.50 64.00 445.50 580.34 a 751.00 753.00 566.50 152.86 b 0.00 z 0.00 3321.71
1979 0.00 0.00 3.00 94.00 243.00 571.00 793.50 676.50 464.00 104.07 c 0.00 z 0.00 a 2949.07
1980 0.00 a 0.00 0.00 156.00 483.50 601.00 823.50 748.50 383.50 104.00 10.00 0.00 3310.00
1981 0.00 6.50 12.83 b 123.50 325.00 629.00 782.00 757.00 408.00 112.12 a 52.00 0.00 3207.94
1982 0.00 0.00 1.00 94.50 532.00 0.00 z 0.00 z 686.00 425.00 208.00 9.00 11.00 1966.50
1983 0.00 0.00 21.50 69.00 246.50 622.50 927.50 873.50 495.00 145.50 24.50 0.00 b 3425.50
1984 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 832.00 365.00 0.00 z 0.00 z 0.00 z 1197.00
1985 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
1986 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 856.50 662.50 449.00 110.00 4.50 0.00 2082.50
1987 0.00 0.00 52.50 235.00 476.00 739.50 894.50 753.00 493.00 58.00 40.00 0.00 3741.50
1988 0.00 0.00 1.00 97.00 554.00 734.50 895.00 840.50 458.50 93.00 5.50 0.00 3679.00
1989 0.00 0.00 22.00 97.00 396.00 601.50 862.00 756.50 0.00 z 0.00 z 11.50 0.00 2746.50
1990 0.00 0.00 33.00 189.50 314.00 672.50 747.00 741.50 506.00 93.50 61.50 0.00 3358.50
1991 0.00 0.00 14.00 176.50 532.00 772.50 771.00 786.50 401.00 117.50 0.00 0.00 3571.00
1992 0.00 0.00 0.00 66.00 438.50 567.00 616.50 611.00 397.00 157.00 0.00 0.00 2853.00
1993 0.00 0.00 19.50 44.50 368.50 542.50 769.50 748.00 263.00 105.00 0.00 0.00 2860.50
1994 0.00 0.00 3.50 69.50 407.00 717.00 759.50 668.00 535.50 219.00 24.00 0.00 3403.00
1995 0.00 0.00 27.50 24.50 355.50 762.00 829.50 874.00 391.50 187.00 0.00 0.00 3451.50
1996 0.00 0.00 0.50 54.50 330.50 677.00 708.50 766.00 499.00 180.00 0.50 0.00 3216.50
1997 0.00 0.00 9.50 87.50 246.50 734.50 799.00 654.50 535.00 237.00 10.00 0.00 3313.50
1998 0.00 0.50 52.00 186.50 587.50 644.50 822.00 838.50 624.00 224.00 20.50 7.50 4007.50
1999 0.00 0.00 27.00 177.00 494.50 665.69 a 918.50 727.50 482.00 157.50 61.50 0.00 3711.19
2000 0.00 d 20.00 71.41 c 112.00 352.00 h 559.00 799.00 799.00 481.50 272.50 41.50 0.00 3155.91
2001 0.00 a 0.00 0.00 176.00 462.50 708.10 a 856.50 840.50 466.50 152.50 123.00 6.20 a 3791.80
2002 0.00 1.00 0.00 125.50 291.00 736.50 950.00 784.00 557.00 0.00 z 13.00 0.00 3458.00
2003 0.00 0.00 a 38.00 128.00 401.50 648.00 764.00 867.00 519.50 183.50 2.50 0.00 3552.00
2004 0.00 a 0.00 c 21.50 122.00 0.00 z 0.00 z 103.50 z 569.00 655.00 221.50 26.50 0.00 1615.50
2005 0.00 0.00 27.00 227.00 347.00 791.00 868.00 774.50 617.00 251.50 32.50 0.00 3935.50
2006 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 805.50 394.50 0.00 z 32.50 0.00 1232.50
2007 0.00 0.00 89.00 168.00 535.00 754.00 863.50 803.50 554.00 318.00 13.50 0.00 4098.50
2008 0.00 0.00 0.00 101.00 302.50 633.50 825.50 753.50 549.50 174.00 68.00 0.00 3407.50
2009 0.00 0.00 21.50 121.50 393.00 617.00 0.00 z 702.00 604.00 75.50 49.50 0.00 2584.00
2010 0.00 0.00 57.00 281.50 490.50 660.50 897.50 904.50 431.40 e 258.00 46.00 0.00 4026.90
2011 0.00 0.00 a 2.00 89.00 388.02 a 673.50 936.20 a 786.00 462.00 304.00 27.00 0.00 3667.72
2012 0.00 0.00 229.00 143.00 534.00 723.50 966.50 755.00 449.50 122.50 h 0.00 z 0.00 z 3800.50
Period of Record Statistics
MEAN 0.01 0.48 15.89 113.49 384.62 637.33 806.49 730.76 454.95 185.71 22.77 0.62 3337.06
S.D. 0.11 2.36 30.12 62.57 106.56 90.17 80.81 79.37 84.69 76.97 24.60 2.01 334.86
SKEW 9.38 6.80 4.33 0.83 0.16 -0.12 0.09 0.03 0.04 0.61 1.49 3.57 0.26
MAX 1.03 20.00 229.00 319.50 642.50 861.96 996.00 914.50 655.00 418.50 123.00 11.00 4098.50
MIN 0.00 0.00 0.00 19.00 178.00 418.00 616.50 553.00 257.00 38.50 0.00 0.00 2709.00
NO YRS 91 92 93 93 90 91 91 96 96 91 90 93 72