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
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 487.50 p 798.00 483.00 269.50 6.00 0.00 1556.50
1902 0.00 0.00 48.50 59.00 409.50 529.50 861.00 205.00 v 428.50 150.50 24.00 0.00 2510.50
1903 0.00 0.00 11.50 101.50 409.00 563.00 760.50 615.50 466.00 246.00 65.50 0.00 3238.50
1904 0.00 0.00 0.00 64.00 330.50 670.71 b 761.80 d 685.00 424.50 161.50 67.50 0.00 3165.51
1905 0.00 0.00 33.50 102.50 313.50 604.50 776.00 791.00 591.00 175.50 i 16.00 0.00 3228.00
1906 1.50 0.00 0.00 205.00 329.50 673.00 833.90 a 824.50 686.50 242.32 a 24.50 0.00 3820.72
1907 0.00 0.00 8.00 7.50 157.00 727.50 669.08 a 575.00 432.00 113.50 8.50 0.00 2698.08
1908 0.00 h 0.00 a 1.00 p 178.97 a 384.50 679.50 823.00 734.50 710.00 295.53 a 21.00 0.00 3827.00
1909 0.00 a 0.00 0.00 1.50 328.00 713.50 773.50 857.50 489.00 205.00 53.00 6.20 a 3427.20
1910 19.00 h 0.00 d 169.00 226.03 a 184.50 h 776.38 a 872.00 763.67 e 482.07 a 315.00 0.00 e 0.00 e 3604.16
1911 0.00 b 0.00 l 2.00 v 166.00 539.00 802.76 a 817.00 723.50 453.50 175.50 0.00 0.00 3677.26
1912 0.00 0.00 2.58 a 133.50 445.50 619.66 a 824.50 578.50 510.00 238.50 30.00 a 0.00 3382.74
1913 0.00 0.00 1.55 a 183.62 a 311.00 731.40 e 777.07 a 808.00 501.00 243.00 52.50 1.50 3610.64
1914 0.00 0.00 0.00 97.00 497.00 624.50 880.00 690.00 531.00 368.50 26.38 a 0.00 3714.38
1915 0.00 0.00 0.00 347.50 267.00 493.50 657.00 597.00 500.00 207.50 33.00 0.00 3102.50
1916 0.00 0.00 1.00 63.00 329.00 481.00 1049.00 788.50 400.50 172.50 24.00 0.53 b 3309.03
1917 0.00 0.00 0.00 35.00 215.00 467.50 802.00 606.50 408.00 27.50 32.50 0.00 a 2594.00
1918 0.00 1.50 54.00 81.00 419.50 609.11 b 735.00 758.50 260.00 165.00 23.00 0.00 3106.61
1919 0.00 0.00 14.00 62.50 383.00 608.50 f 862.00 723.50 489.00 141.50 0.00 0.00 a 2675.50
1920 0.00 0.00 29.50 28.50 380.50 647.50 724.00 726.00 617.50 432.45 a 0.50 0.00 3586.45
1921 0.00 0.00 6.50 221.00 464.50 825.50 967.50 723.00 586.50 194.50 0.00 0.00 3989.00
1922 0.00 0.00 7.00 85.00 687.00 552.50 g 778.00 822.00 621.50 264.00 50.50 0.00 3315.00
1923 0.00 c 0.00 d 0.50 144.50 472.00 819.00 911.00 703.50 552.50 225.00 49.50 1.50 3879.00
1924 0.00 0.00 0.00 84.50 204.00 573.50 767.00 766.06 e 401.00 442.00 32.50 0.00 3270.56
1925 0.00 1.56 a 30.50 228.50 312.00 715.00 813.50 921.50 578.00 55.00 19.00 0.00 3674.56
1926 0.00 0.00 3.62 a 106.50 499.00 550.00 869.00 752.00 374.50 163.27 a 0.00 0.00 3317.88
1927 0.00 0.00 18.50 98.50 297.00 621.50 502.50 j 621.00 650.00 231.90 e 5.19 d 0.00 2543.60
1928 0.00 0.00 25.50 61.00 459.50 520.00 835.00 747.00 430.71 b 240.00 26.50 0.00 3345.21
1929 0.00 0.00 10.00 133.50 354.00 615.50 876.00 776.50 478.50 221.65 a 9.00 0.00 3474.65
1930 0.00 18.00 16.00 173.00 455.00 731.00 888.00 879.50 513.50 260.50 95.00 0.00 4029.50
1931 0.00 0.00 0.00 192.00 404.00 810.50 958.50 770.50 700.50 316.00 93.50 0.50 4246.00
1932 0.00 0.50 0.00 112.00 437.50 767.00 852.00 852.00 513.00 148.50 11.50 1.50 3695.50
1933 0.00 0.00 0.00 94.00 495.00 868.00 941.50 781.50 582.50 142.50 22.50 0.00 3927.50
1934 0.00 0.00 0.00 62.50 h 565.00 721.50 871.00 688.50 446.50 302.50 25.50 0.00 3620.50
1935 0.00 0.00 3.50 119.00 313.50 499.50 1005.00 803.50 456.50 205.00 0.00 0.00 3405.50
1936 0.00 0.00 0.00 a 31.00 525.45 a 595.00 1007.50 821.50 609.00 129.50 2.00 0.00 3720.95
1937 0.00 0.00 0.00 52.00 446.92 a 666.50 911.50 964.00 518.00 140.00 6.50 0.00 3705.42
1938 0.00 0.00 68.00 184.00 354.00 618.50 823.50 911.00 534.50 351.00 66.50 0.00 3911.00
1939 0.00 0.00 19.00 110.50 555.50 751.50 915.00 812.41 b 591.50 234.50 21.00 8.50 4019.41
1940 0.00 0.00 0.00 76.00 312.00 610.00 883.00 774.00 614.50 258.00 20.00 0.00 3547.50
1941 0.00 0.00 0.00 276.00 578.00 724.50 954.00 780.50 594.50 241.00 18.50 15.50 4182.50
1942 0.00 0.00 0.00 315.50 354.00 676.50 785.00 802.50 446.00 331.00 22.24 a 0.00 a 3732.74
1943 0.00 l 0.00 e 23.50 90.54 b 381.30 a 708.00 911.50 807.72 d 281.00 f 260.50 0.00 0.00 3183.06
1944 1.50 0.00 0.00 79.50 559.00 714.00 843.72 a 853.50 519.50 237.00 87.50 0.00 3895.22
1945 0.00 0.00 135.50 133.00 244.50 541.50 765.00 783.00 508.00 178.00 5.00 0.00 3293.50
1946 0.00 0.00 107.00 187.00 390.00 665.00 883.50 728.50 545.17 a 297.50 21.50 3.00 3828.17
1947 0.00 0.00 1.00 50.00 301.50 597.50 877.00 1035.50 534.00 379.50 h 21.50 0.00 3418.00
1948 0.00 0.00 6.00 221.00 403.00 660.00 902.50 866.50 648.00 248.50 53.50 0.50 4009.50
1949 0.00 0.00 0.00 212.59 a 509.43 a 827.50 923.80 a 904.00 449.50 329.00 31.50 0.00 4187.32
1950 0.00 0.00 0.00 25.50 376.00 702.00 737.00 591.50 492.50 319.50 15.00 0.00 3259.00
1951 0.00 4.00 0.00 a 91.00 553.35 a 595.00 840.10 a 673.00 407.50 225.50 3.75 b 13.50 3406.70
1952 0.00 0.00 5.17 a 270.50 447.00 750.50 930.00 791.53 a 611.00 141.50 47.50 0.00 3994.70
1953 0.00 0.00 14.50 59.00 435.00 746.50 871.50 895.50 130.00 u 389.00 78.60 e 0.00 3489.60
1954 0.00 0.00 4.65 a 128.50 293.00 733.97 a 813.50 741.50 449.50 180.00 44.00 0.00 3388.62
1955 0.00 0.00 10.91 d 275.50 515.24 b 705.00 b 0.00 z 912.84 c 492.69 d 0.00 z 0.00 z 0.00 2912.18
1956 0.00 0.00 0.00 a 26.00 358.00 782.00 713.50 765.50 405.50 378.00 92.07 a 0.00 3520.57
1957 0.00 a 0.00 a 0.00 224.00 399.50 666.50 910.50 800.50 455.50 227.50 17.50 0.00 3701.50
1958 0.00 5.00 2.00 149.50 382.50 528.50 774.50 754.50 556.50 251.50 43.50 0.00 3448.00
1959 0.00 0.00 a 3.50 89.50 524.00 739.50 869.50 893.32 a 551.50 120.50 0.00 0.00 3791.32
1960 0.00 0.00 3.00 140.50 377.50 606.00 810.00 828.00 558.50 258.50 19.50 3.00 3604.50
1961 0.00 2.00 15.50 61.00 342.00 723.21 b 820.00 855.00 513.00 283.00 25.50 0.00 3640.21
1962 0.00 0.00 17.00 84.00 551.50 649.50 748.00 777.00 451.00 305.50 8.50 15.50 3607.50
1963 0.00 0.00 47.50 154.00 365.00 723.00 902.00 726.00 555.00 522.50 33.00 0.00 4028.00
1964 0.00 0.00 0.50 175.00 532.00 674.00 914.00 695.00 487.00 241.00 119.50 0.00 3838.00
1965 0.00 0.00 0.00 59.50 533.50 0.00 z 744.00 713.00 325.50 250.00 34.50 0.00 2660.00
1966 0.00 0.00 22.50 48.00 309.00 749.50 964.50 721.50 502.50 203.50 3.50 0.00 3524.50
1967 0.00 0.00 26.50 128.50 273.50 685.00 789.50 691.00 527.00 186.50 9.00 0.00 3316.50
1968 0.00 0.00 83.00 170.00 358.00 640.00 844.00 780.00 540.50 319.50 16.50 0.00 3751.50
1969 0.00 0.00 0.00 175.00 471.00 463.50 807.50 893.50 531.00 198.83 b 37.50 0.00 3577.83
1970 0.00 0.00 0.00 175.00 366.50 759.50 940.50 843.00 549.50 276.00 5.50 0.00 3915.50
1971 0.00 0.00 1.00 128.00 310.50 783.62 a 371.00 o 694.50 564.50 371.50 8.00 0.00 2861.62
1972 0.00 0.00 0.50 67.00 547.00 637.00 774.50 795.00 439.14 a 166.00 5.50 0.00 3431.64
1973 0.00 0.00 25.00 121.50 125.00 n 473.50 j 545.50 j 803.42 a 441.00 335.50 3.00 0.00 1729.42
1974 0.00 0.00 1.55 a 136.03 a 279.50 529.50 873.54 c 681.00 289.00 178.50 39.00 0.00 3007.62
1975 0.00 0.00 4.50 38.00 488.50 625.50 858.50 726.50 339.50 247.00 94.50 0.00 3422.50
1976 0.00 0.00 a 16.50 170.50 292.00 715.50 766.50 750.00 409.66 a 134.00 0.00 0.00 3254.66
1977 0.00 0.00 c 37.50 259.00 684.50 582.50 830.00 513.00 380.00 128.00 65.00 0.00 3479.50
1978 0.00 0.00 6.00 61.50 449.00 589.50 732.50 749.00 563.00 163.00 52.00 0.00 3365.50
1979 0.00 0.00 5.50 86.50 229.00 557.00 787.50 649.00 460.00 107.00 22.00 0.00 2903.50
1980 0.00 0.00 0.00 0.00 z 0.00 z 393.50 i 761.57 a 696.00 350.50 75.50 1.50 0.00 1885.07
1981 0.00 8.00 13.00 93.00 248.50 641.00 790.00 782.00 407.50 127.00 80.00 0.00 3190.00
1982 0.00 0.00 6.00 97.50 536.00 433.00 801.50 611.50 387.50 193.00 13.00 8.50 3087.50
1983 0.00 0.50 11.00 44.00 236.00 630.50 934.50 853.00 511.00 145.50 29.50 0.00 3395.50
1984 0.00 6.00 0.00 117.00 272.00 692.00 746.50 826.50 375.50 279.50 22.00 0.00 3337.00
1985 0.00 0.00 15.50 198.50 455.00 534.00 747.50 654.00 471.00 184.50 11.00 j 0.00 3260.00
1986 0.00 0.00 34.50 194.50 507.37 a 620.50 845.50 651.00 453.00 149.50 4.50 0.00 3460.37
1987 0.00 0.00 78.00 247.50 488.50 745.00 862.00 739.50 541.00 72.50 48.00 0.00 3822.00
1988 0.00 b 0.00 1.55 a 80.50 560.00 722.00 889.00 812.00 463.00 102.50 0.00 z 0.00 3630.55
1989 0.00 0.00 a 20.00 72.50 402.50 546.72 a 838.00 755.50 462.00 236.50 0.00 0.00 3333.72
1990 0.00 0.00 31.50 234.00 260.00 653.00 755.00 740.50 455.00 115.00 69.00 0.00 3313.00
1991 0.00 0.00 9.50 187.50 530.00 740.50 753.00 794.00 384.00 99.50 1.50 0.00 3499.50
1992 0.00 0.00 0.00 51.00 441.50 517.00 575.00 589.00 394.00 164.00 0.00 0.00 2731.50
1993 0.00 0.00 5.00 32.50 306.50 531.00 772.50 763.50 279.50 97.00 0.00 0.00 2787.50
1994 0.00 3.50 2.00 69.50 388.50 676.50 738.00 651.50 546.50 218.50 27.00 0.00 3321.50
1995 0.00 0.00 29.00 4.50 312.00 757.00 794.50 857.00 396.00 183.50 0.00 0.00 3333.50
1996 0.00 0.00 8.00 31.50 287.00 660.00 660.50 755.00 466.00 162.50 2.00 0.00 3032.50
1997 0.00 0.00 5.00 73.00 172.00 732.00 760.50 623.50 491.00 233.00 9.50 0.00 3099.50
1998 0.00 2.50 29.00 150.00 549.50 668.00 857.50 839.50 615.00 230.00 24.50 11.50 3977.00
1999 0.00 0.00 15.50 101.00 484.50 644.00 883.50 736.00 486.50 131.00 68.00 0.00 3550.00
2000 0.00 16.00 65.00 93.00 429.00 514.50 773.50 767.50 442.00 285.50 58.50 0.00 3444.50
2001 0.00 0.00 0.00 122.50 441.00 686.50 819.00 832.50 441.00 168.00 127.00 1.00 3638.50
2002 0.00 0.00 0.00 97.00 237.50 675.00 950.00 778.00 554.50 87.00 7.00 0.00 3386.00
2003 0.00 0.00 25.50 78.50 344.50 614.00 796.50 832.50 550.00 185.50 3.50 0.00 3430.50
2004 0.00 0.00 9.00 68.00 281.50 547.00 737.00 572.00 619.50 216.50 20.00 0.00 3070.50
2005 0.00 1.00 30.00 185.50 330.50 776.00 863.00 786.00 601.00 0.00 z 26.00 0.00 3599.00
2006 0.00 0.00 8.50 239.00 440.00 675.00 961.00 803.50 401.50 123.00 41.00 0.00 3692.50
2007 0.00 0.00 53.50 145.50 518.00 752.50 855.50 814.00 562.50 319.00 16.00 0.00 4036.50
2008 0.00 0.00 0.00 a 79.50 260.50 613.50 806.50 729.00 532.50 173.50 63.00 0.00 3258.00
2009 0.00 0.00 14.50 78.00 340.00 594.50 635.00 682.00 616.00 63.00 38.50 0.00 3061.50
2010 0.00 0.00 44.50 202.00 512.00 632.50 886.00 867.50 375.50 266.00 47.00 0.00 a 3833.00
2011 0.00 5.50 1.55 a 68.00 341.50 624.00 937.00 797.50 452.50 291.00 25.00 0.00 3543.55
2012 0.00 0.00 213.00 88.50 497.00 725.00 939.50 737.00 414.00 92.00 j 0.00 z 0.00 z 3614.00
Period of Record Statistics
MEAN 0.03 0.69 18.24 123.09 400.32 656.84 832.44 761.54 492.79 217.80 29.09 0.83 3509.89
S.D. 0.20 2.58 33.21 72.46 109.64 91.64 83.95 90.76 88.74 88.49 28.26 2.90 349.26
SKEW 7.14 5.10 3.49 0.71 0.14 -0.20 -0.14 -0.15 -0.02 0.55 1.26 3.95 -0.19
MAX 1.50 18.00 213.00 347.50 687.00 868.00 1049.00 1035.50 710.00 522.50 127.00 15.50 4246.00
MIN 0.00 0.00 0.00 1.50 157.00 433.00 575.00 513.00 260.00 27.50 0.00 0.00 2594.00
NO YRS 108 110 109 109 108 106 107 111 110 107 108 111 90