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
1893 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 233.00 w 1020.50 864.00 656.25 b 328.82 c 71.67 c 7.50 2948.74
1894 0.00 d 0.00 a 54.25 a 259.50 497.00 905.17 a 1094.00 972.50 655.50 230.00 6.21 a 1.55 a 4675.68
1895 0.00 4.67 a 0.00 z 309.83 a 571.50 845.50 914.50 925.50 725.00 151.00 37.00 0.00 b 4484.49
1896 0.00 5.00 13.00 314.00 687.00 830.36 b 949.63 a 949.00 455.69 a 193.00 3.50 4.81 b 4404.99
1897 0.50 0.00 g 0.00 z 163.00 451.00 739.50 1022.00 776.00 812.50 358.00 28.00 0.00 4350.50
1898 0.00 0.00 32.50 0.00 z 545.50 848.00 999.00 929.00 664.00 186.00 16.50 0.00 4220.50
1899 0.00 0.00 0.00 256.50 522.00 826.50 982.50 995.50 542.50 353.50 87.50 0.00 4566.50
1900 0.00 0.00 0.00 336.50 666.00 865.50 974.50 1156.50 638.00 504.00 23.50 0.00 5164.50
1901 0.00 0.00 3.00 262.00 595.72 a 848.50 1218.50 1015.00 577.50 296.00 21.50 0.00 4837.72
1902 0.00 1.00 75.50 183.00 614.00 676.00 975.50 814.00 484.00 288.00 55.00 0.00 4166.00
1903 0.00 0.00 40.50 182.50 605.50 704.50 924.50 783.00 507.86 b 270.73 a 49.14 a 0.00 a 4068.23
1904 0.00 a 0.00 5.00 120.00 515.50 801.00 849.50 788.00 591.50 315.50 99.00 0.00 4085.00
1905 0.00 0.00 81.50 173.00 471.00 582.50 f 863.00 963.50 684.00 252.50 27.50 0.00 a 3516.00
1906 0.00 0.00 1.00 246.00 486.00 741.00 880.50 964.00 763.50 319.50 63.62 a 0.00 4465.12
1907 0.00 0.00 85.00 30.50 261.50 686.00 963.00 840.50 554.00 235.00 22.00 0.50 3678.00
1908 0.00 0.00 20.00 208.50 506.50 717.00 992.00 867.50 798.50 325.00 61.00 0.00 4496.00
1909 0.00 0.00 0.00 62.50 500.00 795.00 923.50 1049.00 593.00 277.50 111.00 5.00 4316.50
1910 0.00 0.00 222.00 364.50 380.00 859.50 1060.00 933.00 623.50 410.00 1.00 0.00 4853.50
1911 0.00 0.00 60.00 179.50 668.00 941.50 976.50 807.50 618.00 211.50 0.00 0.00 4462.50
1912 0.00 0.00 0.00 205.50 533.00 671.50 918.50 818.50 615.00 296.50 45.50 2.50 4106.50
1913 0.00 4.00 23.50 245.00 443.00 887.50 996.00 1006.00 660.00 283.50 108.00 9.50 4666.00
1914 0.00 0.00 8.50 224.50 539.00 809.50 1048.00 923.00 649.50 457.50 83.00 0.00 4742.50
1915 0.00 0.00 0.00 438.50 403.50 663.10 a 836.50 757.00 630.50 353.00 71.50 0.00 4153.60
1916 0.00 0.00 25.00 168.50 508.00 651.50 1146.00 982.50 582.50 280.50 55.00 3.50 4403.00
1917 0.00 0.00 14.50 118.00 397.00 668.50 953.50 818.50 580.00 111.50 89.50 0.00 3751.00
1918 0.00 3.00 90.00 101.50 649.00 783.50 897.00 953.50 435.50 340.50 102.00 5.50 4361.00
1919 0.00 0.00 47.50 164.00 471.00 875.00 984.00 852.00 690.50 258.00 0.00 0.00 4342.00
1920 0.00 0.00 75.50 94.00 500.00 821.00 863.00 803.00 697.00 488.00 6.50 0.00 4348.00
1921 0.00 6.50 63.50 318.00 603.00 961.00 1115.50 913.50 698.50 305.35 a 6.50 0.00 4991.35
1922 0.00 0.00 11.00 154.50 649.00 840.00 843.50 953.00 701.00 378.00 77.00 0.00 4607.00
1923 0.00 0.00 a 8.00 171.50 508.50 864.50 1048.00 826.50 633.00 232.00 40.00 1.00 4333.00
1924 0.00 0.00 1.50 207.00 277.00 669.50 822.50 815.00 462.50 443.50 47.50 0.00 3746.00
1925 0.00 0.00 47.50 336.50 411.50 769.00 890.50 899.00 733.50 93.50 18.50 0.00 4199.50
1926 0.00 0.00 15.00 153.00 624.00 642.00 941.50 901.50 567.50 235.00 17.50 0.00 4097.00
1927 0.00 0.00 40.50 199.00 422.50 665.50 874.00 744.50 664.50 340.50 13.00 0.00 3964.00
1928 0.00 0.00 55.50 98.50 567.50 609.50 942.00 871.50 489.00 320.00 26.00 0.00 a 3979.50
1929 0.00 0.00 15.50 214.50 398.50 704.00 962.50 869.00 567.50 238.00 3.50 0.00 3973.00
1930 0.00 32.50 31.00 237.50 513.50 783.00 1009.50 964.50 602.00 300.00 122.50 0.00 4596.00
1931 0.00 2.50 0.00 265.00 441.50 964.00 1038.50 899.50 786.00 364.50 98.50 0.00 4860.00
1932 0.00 0.00 3.50 176.90 a 557.50 858.50 959.50 912.50 506.00 194.50 17.50 0.00 4186.40
1933 0.00 0.00 11.00 161.00 511.00 1012.00 1023.50 822.00 751.50 212.50 39.00 2.00 4545.50
1934 0.00 0.00 12.00 167.50 829.50 955.50 1039.02 a 831.50 501.50 383.50 58.50 0.00 4778.52
1935 0.00 0.00 46.50 147.00 377.50 647.50 1091.50 901.00 621.50 229.00 6.50 0.00 4068.00
1936 0.00 0.00 22.00 124.00 682.50 712.00 1180.50 1030.00 697.50 227.50 11.00 5.00 4692.00
1937 0.00 0.00 0.00 142.50 507.00 698.50 1005.00 1101.00 589.14 a 186.00 a 45.50 0.00 4274.64
1938 0.00 0.00 86.50 234.50 495.00 775.00 1016.00 1003.50 654.00 457.00 68.00 0.00 4789.50
1939 0.00 0.00 57.00 161.50 709.00 850.00 1020.50 912.00 741.50 265.50 41.00 15.50 4773.50
1940 0.00 0.00 5.50 127.50 460.00 808.50 1034.00 857.67 a 672.00 376.50 39.50 0.00 4381.17
1941 0.00 0.00 2.00 320.50 680.50 812.50 993.00 980.00 648.00 303.50 43.00 7.50 4790.50
1942 0.00 0.00 27.00 286.55 a 436.50 750.50 915.50 878.50 534.00 333.00 33.00 0.00 4194.55
1943 0.00 0.00 31.00 146.00 400.42 a 868.00 978.05 a 914.50 b 467.50 276.00 0.00 0.00 4081.47
1944 9.50 0.00 0.00 a 101.00 623.00 838.00 890.50 904.00 611.00 288.00 86.50 0.00 4351.50
1945 0.00 0.00 143.00 157.00 340.50 605.50 877.00 880.50 583.50 239.50 43.97 a 0.00 a 3870.47
1946 0.00 0.00 133.30 a 297.50 437.00 773.79 a 963.00 803.50 569.00 355.50 15.00 7.50 4355.09
1947 0.00 0.00 a 7.50 77.00 362.50 685.50 908.82 a 1102.00 671.00 541.00 46.50 0.00 4401.82
1948 0.00 0.00 48.00 295.00 482.00 772.24 a 998.00 984.50 758.00 281.07 a 73.00 4.50 4696.31
1949 0.00 0.00 14.00 210.52 a 639.50 909.00 1068.00 991.00 512.00 424.50 79.50 0.00 4848.02
1950 0.00 0.00 0.00 70.50 497.55 a 766.50 869.50 784.50 603.00 413.50 32.50 0.00 4037.55
1951 0.00 0.00 a 0.00 a 86.00 632.50 658.50 883.00 788.50 453.10 a 277.00 15.00 12.00 3805.60
1952 0.00 0.00 a 5.50 274.50 493.00 834.11 b 949.00 830.00 614.50 174.00 86.50 0.00 4261.11
1953 0.00 a 0.00 27.90 a 91.50 489.80 a 844.50 921.00 912.00 603.50 472.50 110.50 0.00 4473.20
1954 0.00 9.50 9.00 253.00 378.00 858.00 981.50 843.00 601.50 239.50 63.00 0.00 4236.00
1955 0.00 0.00 9.00 336.50 644.05 b 718.00 1081.00 1034.50 644.50 286.23 a 0.00 0.00 4753.79
1956 0.00 0.00 0.00 108.00 518.50 904.00 846.00 887.63 a 504.00 436.00 69.50 0.00 4273.63
1957 0.00 0.00 a 0.50 228.50 442.00 752.50 1007.50 813.75 a 468.50 186.50 10.50 0.00 3910.25
1958 0.00 7.78 a 2.50 190.00 553.00 620.17 a 834.00 880.00 584.00 317.00 67.50 0.00 4055.95
1959 0.00 0.00 b 0.50 186.50 642.00 858.00 904.50 987.00 604.00 151.50 10.50 3.00 4347.50
1960 0.00 0.00 a 8.02 b 225.50 503.50 673.50 898.00 887.00 655.00 301.50 37.50 8.00 4197.52
1961 0.00 0.00 7.50 71.00 436.50 806.50 870.67 b 907.00 556.50 315.00 28.00 6.50 4005.17
1962 0.00 a 0.00 3.00 166.00 636.00 728.79 a 826.50 838.50 478.00 364.50 17.00 34.00 4092.29
1963 0.00 0.00 71.00 231.00 466.00 857.00 954.50 825.50 617.00 579.50 68.50 0.00 4670.00
1964 0.00 0.00 9.50 219.00 672.00 807.00 1065.50 781.00 552.50 236.00 147.00 0.00 4489.50
1965 0.00 0.00 0.00 97.00 594.50 755.50 883.50 820.50 460.50 297.00 55.00 2.50 3966.00
1966 0.00 1.50 45.00 106.00 385.50 812.00 1024.50 802.00 576.50 232.50 28.00 0.00 4013.50
1967 0.00 0.00 40.00 155.00 341.00 790.00 859.00 772.00 542.00 262.50 11.00 0.00 3772.50
1968 0.00 0.00 119.00 240.00 383.50 779.00 912.50 866.50 566.00 321.00 27.50 0.00 4215.00
1969 0.00 0.00 0.00 189.00 517.00 578.50 948.00 933.00 595.50 206.50 37.50 0.00 4005.00
1970 0.00 0.00 0.00 200.50 534.00 811.50 968.50 886.00 572.00 271.00 4.00 1.55 a 4249.05
1971 0.00 0.00 0.00 212.50 400.00 920.00 828.00 819.50 629.50 441.50 48.50 0.00 4299.50
1972 0.00 0.00 10.00 115.50 606.50 742.50 874.50 891.00 561.00 195.50 8.00 0.00 4004.50
1973 0.00 0.00 53.00 146.50 393.00 855.50 970.82 a 930.00 583.50 427.50 36.00 0.00 4395.82
1974 0.00 0.00 3.50 207.50 400.50 707.00 1057.50 811.00 453.50 280.50 38.79 a 0.00 3959.79
1975 0.00 0.00 0.00 81.00 594.50 779.50 1009.50 919.50 456.50 333.50 154.50 0.00 4328.50
1976 0.00 5.00 39.50 253.00 464.00 832.50 997.50 894.00 561.50 198.00 11.00 0.00 a 4256.00
1977 0.00 0.00 89.00 401.50 784.50 808.50 1012.00 772.00 629.00 214.00 79.50 0.00 4790.00
1978 0.00 0.00 20.00 163.50 546.50 806.50 909.50 899.50 756.00 229.00 79.00 0.00 4409.50
1979 0.00 0.00 0.50 126.00 455.18 a 752.50 946.50 833.00 641.00 235.50 34.00 0.00 4024.18
1980 0.00 0.00 3.00 224.50 617.50 817.50 1036.00 912.50 611.50 190.00 44.00 0.00 4456.50
1981 3.00 34.50 53.50 252.00 472.00 797.50 949.00 887.50 550.00 220.50 96.00 0.00 a 4315.50
1982 0.00 0.00 9.00 134.00 598.50 670.50 1024.50 897.50 557.00 300.50 31.00 18.50 4241.00
1983 0.00 0.00 33.50 105.00 398.50 800.50 1088.50 1067.50 625.50 288.50 66.50 0.00 c 4474.00
1984 0.00 0.00 0.00 167.50 443.50 859.00 916.00 978.50 559.50 348.00 19.00 0.00 4291.00
1985 0.00 0.00 33.00 358.50 695.00 717.50 946.00 778.00 597.93 a 221.50 7.50 0.00 4354.93
1986 0.00 0.00 q 0.00 j 138.00 t 565.50 845.00 985.00 764.50 599.00 275.50 9.00 0.00 4043.50
1987 0.00 0.00 77.00 350.00 712.50 926.00 1051.00 864.00 642.50 149.50 80.00 0.00 4852.50
1988 0.00 0.00 b 11.37 a 168.00 712.00 981.50 1044.00 1040.50 678.50 171.50 21.72 a 0.00 4829.09
1989 0.00 a 0.00 51.50 175.00 523.00 779.50 1028.50 894.50 591.50 363.50 8.50 0.00 4415.50
1990 0.00 0.00 68.50 252.50 434.00 845.50 945.50 922.00 711.50 267.00 99.50 0.00 4546.00
1991 0.00 0.00 45.00 265.50 621.00 953.50 917.50 890.00 541.50 225.50 2.50 0.00 4462.00
1992 0.00 0.00 a 17.50 95.00 558.50 739.00 722.50 716.00 512.00 270.50 4.00 0.00 a 3635.00
1993 0.00 0.00 3.50 87.50 444.50 697.50 848.50 882.50 411.50 218.50 5.50 0.00 3599.50
1994 0.00 0.00 27.50 217.00 552.00 859.00 849.00 801.50 698.00 342.00 48.50 0.00 4394.50
1995 0.00 0.00 58.50 84.50 458.28 a 878.50 944.50 1033.00 521.00 259.50 0.00 0.00 4237.78
1996 0.00 0.00 10.50 93.50 379.50 780.50 845.00 0.00 z 0.00 z 31.00 u 0.50 0.00 2109.50
1997 0.00 0.00 13.50 117.50 286.00 808.50 878.50 761.00 592.00 301.00 9.00 0.00 3767.00
1998 0.00 5.00 69.00 218.00 685.62 a 696.00 894.87 a 892.50 724.00 273.50 42.50 33.00 4533.98
1999 0.00 0.00 21.50 183.00 545.00 748.50 1013.50 802.50 525.00 221.00 95.50 1.00 4156.50
2000 0.00 17.00 83.18 a 188.50 561.00 610.00 f 886.00 854.50 581.00 351.00 54.31 a 0.00 3576.49
2001 0.00 0.00 0.00 218.50 518.00 745.50 945.50 897.00 493.50 203.50 186.00 17.50 4225.00
2002 0.00 1.50 0.00 204.50 386.50 830.00 995.50 828.00 649.50 160.50 11.50 0.00 4067.50
2003 0.00 0.00 48.00 213.00 446.00 720.00 903.50 925.50 556.00 268.00 15.00 0.00 4095.00
2004 0.00 0.00 54.00 203.50 449.00 677.50 832.00 691.50 679.50 262.50 51.00 0.00 3900.50
2005 0.00 0.00 35.50 267.50 410.50 896.50 952.00 818.00 682.00 303.00 55.00 0.00 4420.00
2006 0.00 0.00 10.00 273.50 516.00 778.50 1003.50 878.50 485.00 191.00 44.00 0.00 4180.00
2007 0.00 0.00 96.50 201.00 609.50 814.50 904.50 872.50 635.00 386.00 13.50 0.00 4533.00
2008 0.00 0.00 1.00 131.00 407.50 764.00 925.00 819.00 630.00 244.50 89.00 0.00 4011.00
2009 0.00 0.00 38.23 a 149.50 472.50 711.50 738.50 745.50 603.50 98.50 74.50 0.00 3632.23
2010 0.00 0.00 41.00 294.00 508.50 757.50 937.50 950.00 516.60 e 349.94 e 44.00 0.00 4399.04
2011 0.00 0.00 0.00 101.50 457.00 813.60 e 1019.50 869.00 517.00 323.00 32.50 0.00 4133.10
2012 0.00 0.00 305.50 154.80 e 628.00 835.00 1081.00 802.50 557.00 188.50 44.50 6.00 4602.80
2013 0.00 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
Period of Record Statistics
MEAN 0.11 1.19 32.56 193.85 516.06 788.28 956.84 885.39 600.32 288.51 44.87 1.89 4308.92
S.D. 0.91 4.80 44.30 79.72 108.61 88.53 84.61 86.29 84.59 90.67 36.67 5.36 324.74
SKEW 9.61 5.64 3.03 0.51 0.25 0.01 0.16 0.50 0.14 0.60 1.05 4.17 0.07
MAX 9.50 34.50 305.50 438.50 829.50 1012.00 1218.50 1156.50 812.50 579.50 186.00 34.00 5164.50
MIN 0.00 0.00 0.00 30.50 261.50 578.50 722.50 691.50 411.50 93.50 0.00 0.00 3599.50
NO YRS 120 118 117 117 119 117 120 119 119 119 120 120 112