date! ,

Monthly Total Growing Degree Days

(a vali)

Base Temperature = 40 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1904 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 402.50 n 737.50 682.50 451.50 208.50 54.00 1.50 2135.50
1905 0.00 0.00 39.00 123.50 329.50 636.00 806.50 836.50 624.00 195.00 11.00 0.00 3601.00
1906 0.00 0.00 0.00 238.50 380.50 666.00 839.00 847.50 654.50 193.00 34.00 0.00 3853.00
1907 0.00 0.00 5.00 13.00 180.50 669.00 812.00 804.50 464.00 172.50 9.00 0.00 3129.50
1908 0.00 0.00 4.50 211.00 417.98 a 673.00 891.50 763.50 712.00 254.00 18.00 0.00 3945.48
1909 0.00 0.00 0.00 35.00 391.50 719.00 866.50 926.00 515.50 207.50 65.89 b 3.50 3730.39
1910 0.00 0.00 148.50 279.50 349.50 809.00 849.00 742.50 539.00 325.50 0.00 0.00 4042.50
1911 0.00 0.00 54.00 177.00 584.00 880.50 853.50 739.50 525.00 180.00 0.00 0.00 3993.50
1912 0.00 0.00 3.50 186.50 485.50 648.50 883.50 706.00 521.11 c 208.22 a 4.00 2.50 3649.33
1913 0.00 0.00 7.75 a 220.00 369.00 791.50 840.00 875.50 527.50 219.07 a 49.00 1.00 3900.32
1914 0.00 0.00 6.50 140.00 537.50 691.50 989.00 770.00 573.00 394.50 27.00 0.00 a 4129.00
1915 0.00 0.00 0.00 396.50 322.50 584.00 749.17 a 726.00 487.50 244.50 25.00 0.00 3535.17
1916 0.00 1.00 1.50 153.00 418.50 587.50 1086.00 865.00 477.00 193.50 38.79 a 0.00 3821.79
1917 0.00 0.00 7.50 32.00 f 360.00 606.00 940.00 758.50 502.50 57.50 48.50 0.00 3280.50
1918 0.00 0.00 65.50 125.50 525.00 773.00 897.50 898.50 346.00 246.50 69.50 0.00 3947.00
1919 0.00 0.00 13.50 131.00 480.50 830.00 992.50 811.50 621.00 158.00 1.00 0.00 4039.00
1920 0.00 0.00 40.00 68.50 526.00 757.00 876.50 825.00 658.00 395.50 2.00 0.00 4148.50
1921 0.00 0.50 26.00 255.00 539.00 902.50 1091.50 859.00 630.00 263.00 0.00 0.00 4566.50
1922 0.00 0.00 0.00 f 110.50 656.00 777.50 855.00 926.50 645.00 324.50 51.00 0.00 4346.00
1923 0.00 0.00 0.00 151.50 508.50 873.50 985.50 773.50 623.50 237.50 48.00 0.00 4201.50
1924 0.00 0.00 0.50 136.50 281.00 647.07 a 857.00 776.00 458.00 375.00 20.00 0.00 3551.07
1925 0.00 0.00 46.00 294.00 372.50 729.50 862.50 946.50 630.00 58.00 10.00 0.00 3949.00
1926 0.00 a 0.00 12.50 159.00 599.50 645.00 923.00 820.00 442.00 209.00 1.50 0.00 c 3811.50
1927 0.00 0.00 20.00 156.50 368.00 706.00 834.50 721.50 617.50 222.00 2.00 0.00 3648.00
1928 0.00 0.00 42.00 84.00 560.00 592.50 902.50 851.50 447.50 262.00 32.00 0.00 3774.00
1929 0.00 0.00 20.50 174.50 370.50 665.50 953.00 861.00 492.50 230.00 7.00 0.00 3774.50
1930 0.00 9.33 a 11.00 215.50 488.50 779.50 949.00 936.50 562.50 285.00 68.00 0.00 a 4304.83
1931 0.00 0.00 0.00 234.50 422.50 900.50 1012.50 845.50 743.00 356.50 58.50 0.00 4573.50
1932 0.00 7.00 3.00 144.00 519.50 857.00 1076.00 970.00 511.50 162.00 20.00 0.00 4270.00
1933 0.00 0.00 5.50 127.50 494.00 1060.00 1083.00 911.00 720.00 199.00 22.50 0.00 4622.50
1934 0.00 0.00 3.50 144.50 755.00 826.50 966.50 835.97 a 471.00 354.00 28.00 0.00 4384.97
1935 0.00 0.00 12.50 130.50 362.50 610.00 1074.00 850.50 509.00 195.00 0.00 0.00 3744.00
1936 0.00 0.00 0.00 a 68.50 591.50 696.50 1117.00 901.50 637.00 167.00 2.50 0.00 4181.50
1937 0.00 0.00 0.00 95.00 495.50 692.00 953.00 1015.50 556.50 152.50 14.00 0.00 3974.00
1938 0.00 0.00 61.50 195.00 398.50 732.00 913.50 929.50 568.00 340.00 45.00 0.00 4183.00
1939 0.00 0.00 8.50 122.00 553.50 723.00 936.00 852.00 592.50 198.50 11.00 6.00 4003.00
1940 0.00 a 0.00 0.00 77.00 383.00 676.50 944.50 757.00 616.50 296.50 7.50 0.00 3758.50
1941 0.00 0.00 0.00 264.50 577.00 729.00 942.50 841.50 561.00 254.00 21.50 5.00 4196.00
1942 0.00 0.00 5.50 285.00 358.50 659.50 828.50 838.50 447.00 270.22 a 12.00 0.00 3704.72
1943 0.00 0.00 21.50 103.50 382.50 784.50 995.50 903.00 463.00 237.00 0.00 0.00 3890.50
1944 2.00 0.00 0.00 87.00 581.00 769.50 905.00 881.00 550.50 245.00 71.00 0.00 4092.00
1945 0.00 0.00 115.50 118.00 309.50 566.00 841.50 842.50 476.00 163.50 6.00 0.00 3438.50
1946 0.00 0.00 79.00 227.00 355.00 701.00 920.50 765.00 491.00 245.50 5.50 0.00 3789.50
1947 0.00 0.00 0.00 65.50 330.50 648.00 1040.50 1080.50 574.00 518.50 31.50 0.00 4289.00
1948 0.00 0.00 10.50 279.00 502.50 735.00 a 966.00 926.50 729.50 283.00 47.00 0.00 4479.00
1949 0.00 0.00 0.00 208.50 611.00 886.00 1008.53 a 968.00 488.00 322.50 39.00 0.00 4531.53
1950 0.00 0.00 0.00 42.50 406.00 777.00 877.50 786.00 593.00 338.00 21.50 0.00 3841.50
1951 0.00 0.00 0.00 100.00 617.50 652.00 922.25 a 782.50 459.50 247.50 7.00 5.50 3793.75
1952 0.00 0.00 0.00 299.50 535.50 835.50 983.00 839.00 634.00 156.00 54.00 0.00 4336.50
1953 0.00 0.00 10.00 75.00 505.00 847.00 933.50 952.50 593.50 451.00 68.50 0.00 a 4436.00
1954 0.00 1.04 a 1.00 193.50 349.50 837.50 954.50 834.00 533.50 196.50 44.50 0.00 3945.54
1955 0.00 0.00 16.00 342.00 646.00 805.00 1113.50 1016.50 585.00 300.00 1.50 0.00 4825.50
1956 0.00 0.00 0.00 44.00 506.00 840.50 835.00 870.50 473.00 431.50 77.50 0.00 4078.00
1957 0.00 0.00 0.00 251.00 475.50 723.50 1053.50 885.50 521.50 237.00 22.50 0.00 4170.00
1958 0.00 4.00 8.00 182.50 545.50 588.00 855.00 907.50 628.00 290.00 40.50 0.00 4049.00
1959 0.00 a 0.00 10.50 164.00 592.00 858.50 994.50 1014.00 602.50 143.50 2.50 0.00 4382.00
1960 0.00 0.00 5.68 a 163.00 503.00 699.50 978.50 985.50 638.00 289.50 5.50 0.00 4268.18
1961 0.00 1.00 32.50 67.00 439.50 788.00 918.50 964.62 a 545.50 258.50 7.00 0.00 4022.12
1962 0.00 0.00 1.00 149.50 595.00 734.50 830.00 851.00 495.50 343.00 15.00 21.50 4036.00
1963 0.00 0.00 59.50 202.50 464.50 840.00 1001.50 848.00 607.00 463.50 27.00 0.00 4513.50
1964 0.00 0.00 2.50 194.00 607.50 753.50 1022.00 811.50 544.50 256.00 95.00 0.00 4286.50
1965 0.00 0.00 0.00 85.50 551.50 726.00 850.50 817.00 333.00 289.00 31.00 0.00 3683.50
1966 0.00 0.00 23.00 79.00 381.50 801.00 1043.50 794.50 559.00 215.00 5.50 0.00 3902.00
1967 0.00 0.00 33.00 153.50 351.00 710.00 877.50 788.50 584.00 234.00 15.00 0.00 3746.50
1968 0.00 0.00 117.00 226.50 401.50 725.00 890.50 866.00 583.00 310.00 14.50 0.00 4134.00
1969 0.00 0.00 0.00 186.50 570.00 580.00 905.50 939.50 575.00 177.00 27.50 0.00 3961.00
1970 0.00 0.00 0.00 166.50 454.50 804.50 980.00 879.00 561.00 230.00 3.00 0.00 4078.50
1971 0.00 0.00 0.00 200.50 386.00 841.00 770.50 764.50 579.00 355.50 8.00 0.00 3905.00
1972 0.00 0.00 1.50 95.00 576.50 712.00 845.00 839.50 481.50 194.50 10.50 0.00 3756.00
1973 0.00 0.00 41.00 148.00 397.00 749.00 909.50 935.00 536.00 365.50 14.00 0.00 4095.00
1974 0.00 0.00 0.00 175.00 385.50 681.50 1009.00 749.50 416.50 250.50 30.50 0.00 3698.00
1975 0.00 0.00 0.00 63.50 592.50 745.00 1000.50 858.50 466.00 293.50 85.50 0.00 4105.00
1976 0.00 0.00 19.50 259.00 475.00 824.00 972.50 933.00 564.00 170.00 0.54 b 0.00 4217.54
1977 0.00 0.00 50.50 361.00 750.50 758.00 970.00 691.50 548.00 210.50 46.50 0.00 4386.50
1978 0.00 0.00 28.00 109.00 566.00 692.50 851.50 826.15 a 617.00 242.83 a 50.50 0.00 3983.48
1979 0.00 0.00 0.00 127.50 334.50 684.50 856.00 743.00 550.00 156.00 14.00 0.00 3465.50
1980 0.00 0.00 0.00 z 249.00 581.50 693.50 917.50 866.50 0.00 z 141.16 c 27.50 0.00 3476.66
1981 0.00 5.50 40.00 205.50 431.50 675.00 871.00 833.50 478.00 124.50 30.50 i 0.00 3664.50
1982 0.00 0.00 0.00 150.50 598.00 547.00 891.25 a 767.00 409.50 164.00 13.97 a 9.50 3550.72
1983 0.00 z 0.00 9.00 100.50 330.50 720.50 978.10 b 934.50 490.00 116.50 13.00 0.00 3692.60
1984 0.00 0.00 0.00 98.50 342.00 654.50 764.50 782.50 256.00 168.36 b 0.00 0.00 3066.36
1985 0.00 0.00 b 10.50 256.50 561.00 574.00 808.58 a 650.50 418.33 c 88.50 1.15 d 0.00 e 3369.07
1986 0.00 0.00 35.50 154.50 450.00 664.00 847.50 631.50 391.61 b 117.59 b 1.00 0.00 3293.19
1987 0.00 a 0.00 42.00 269.00 508.50 771.21 a 948.00 677.35 a 0.00 z 0.00 z 0.00 z 0.00 3216.06
1988 0.00 g 0.00 z 0.00 0.00 z 537.00 708.00 850.95 a 822.53 a 531.50 101.50 6.50 0.00 3557.98
1989 0.00 0.00 10.00 136.00 462.50 720.00 995.00 817.00 496.50 207.50 0.00 a 0.00 3844.50
1990 0.00 0.00 19.50 199.00 341.00 710.00 799.00 799.00 580.00 118.50 50.50 0.00 3616.50
1991 0.00 0.00 18.00 208.50 592.00 828.50 839.00 879.00 478.00 137.00 0.00 0.00 3980.00
1992 0.00 0.50 0.00 y 0.00 z 551.50 662.50 696.50 0.00 z 480.00 219.50 0.50 0.00 2611.00
1993 0.00 0.00 19.50 105.50 456.50 675.50 863.00 869.50 359.50 162.00 0.00 0.00 3511.00
1994 0.00 7.00 9.50 163.50 537.00 790.00 863.00 766.00 637.50 283.50 33.50 0.00 4090.50
1995 0.00 0.00 33.00 63.50 454.50 868.50 904.50 941.50 512.00 196.50 0.00 0.00 3974.00
1996 0.00 0.00 0.00 72.50 400.50 727.50 820.50 0.00 z 0.00 z 210.50 0.50 0.00 2232.00
1997 0.00 0.00 7.00 124.50 316.00 810.50 857.50 741.00 597.00 263.00 5.00 0.00 3721.50
1998 0.00 11.50 42.50 0.00 z 654.50 676.50 0.00 z 904.00 0.00 z 0.00 z 23.50 0.00 z 2312.50
1999 0.00 0.00 31.00 149.00 550.50 734.00 976.50 826.50 501.50 161.50 61.00 0.00 3991.50
2000 0.00 7.50 88.35 a 150.50 498.50 636.43 b 887.12 a 857.50 491.00 266.00 50.00 0.00 3932.90
2001 0.00 0.00 0.00 163.50 0.00 z 754.50 944.50 935.50 516.00 187.00 142.50 0.00 3643.50
2002 0.00 z 1.00 0.00 146.00 301.00 785.50 979.00 824.00 601.50 100.50 4.00 0.00 3742.50
2003 0.00 0.00 31.50 168.50 422.50 681.50 884.00 934.00 543.00 250.00 8.50 0.00 3923.50
2004 0.00 0.00 26.00 150.00 333.50 607.50 800.32 a 650.00 673.00 237.50 26.00 0.00 3503.82
2005 0.00 0.00 19.50 223.00 387.00 855.00 952.50 841.50 0.00 z 262.00 38.50 0.00 3579.00
2006 0.00 0.00 15.50 283.50 511.50 756.00 1028.00 863.00 474.00 153.00 18.00 0.00 4102.50
2007 0.00 0.00 69.50 215.00 585.50 826.00 958.00 825.50 576.00 330.00 17.00 0.00 4402.50
2008 0.00 0.00 0.00 99.50 367.00 692.00 947.00 821.00 568.50 225.00 75.50 0.00 3795.50
2009 0.00 0.00 23.50 139.50 445.00 697.00 743.00 758.00 685.00 76.50 62.00 0.00 3629.50
2010 0.00 0.00 50.00 308.00 517.00 722.00 951.50 941.50 446.50 288.50 47.00 0.00 4272.00
2011 0.00 0.00 0.00 95.50 449.50 678.50 1040.00 878.50 523.00 327.50 26.00 0.00 4018.50
2012 0.00 0.00 203.05 a 196.50 585.00 803.00 1058.50 823.50 530.00 162.00 16.00 1.00 4378.55
2013 0.00 0.00 1.03 a 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 1.03
Period of Record Statistics
MEAN 0.02 0.53 20.91 165.03 471.08 733.45 919.61 843.01 539.46 235.72 25.73 0.53 3970.76
S.D. 0.19 1.92 32.57 75.30 107.15 88.72 87.99 84.87 85.77 87.03 25.90 2.44 331.39
SKEW 10.15 4.03 2.89 0.55 0.10 0.41 0.06 -0.03 -0.25 0.57 1.43 6.70 -0.11
MAX 2.00 11.50 203.05 396.50 755.00 1060.00 1117.00 1080.50 743.00 518.50 142.50 21.50 4825.50
MIN 0.00 0.00 0.00 13.00 180.50 547.00 696.50 631.50 256.00 57.50 0.00 0.00 3066.36
NO YRS 106 108 106 104 107 108 108 107 104 107 107 108 95