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 416.90 b 871.73 d 908.41 c 816.00 643.00 55.00 r 67.50 d 0.00 3723.54
1894 0.00 0.00 105.00 286.55 a 570.40 a 893.50 1011.50 973.18 c 678.10 a 315.34 b 16.00 0.00 4849.58
1895 0.00 b 15.00 52.50 417.00 582.00 752.00 717.00 f 33.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1818.50
1896 0.00 z 14.00 20.50 328.00 685.00 803.50 908.00 898.50 478.50 165.00 0.50 0.00 4301.50
1897 0.00 m 0.00 17.16 c 174.00 496.00 744.00 1006.98 a 746.58 a 859.00 402.50 44.46 b 0.00 4490.69
1898 0.00 0.00 b 31.50 f 215.00 512.50 838.50 946.50 900.00 687.00 231.95 c 25.86 a 0.00 c 4357.31
1899 0.00 b 3.11 a 0.00 b 279.50 493.00 808.00 924.00 992.00 591.50 397.00 83.00 1.50 4572.61
1900 0.00 0.00 27.50 335.50 687.50 832.00 960.00 1086.00 652.00 561.00 24.00 0.00 5165.50
1901 0.00 b 0.00 29.85 d 219.50 f 602.90 b 851.50 1224.50 1009.05 a 609.50 379.75 c 26.50 0.00 d 4733.55
1902 0.00 b 0.00 b 85.80 c 201.50 644.00 708.50 971.50 861.50 517.24 a 365.00 41.38 a 0.00 c 4396.42
1903 0.00 a 0.00 16.57 b 207.50 577.00 710.00 914.00 795.67 a 495.00 283.98 c 26.90 a 0.00 d 4026.61
1904 0.00 a 0.00 a 15.50 b 93.50 507.00 715.00 833.00 750.50 586.03 a 318.55 b 98.57 b 0.00 3917.66
1905 0.00 c 0.50 83.04 c 175.00 406.00 726.50 848.50 980.50 685.00 239.22 a 34.00 0.00 b 4178.25
1906 0.00 4.15 a 1.55 a 268.00 545.50 712.50 840.00 937.00 689.00 267.24 b 42.93 a 0.00 4307.87
1907 0.00 c 3.50 81.00 56.00 266.00 696.00 918.00 851.00 560.00 220.62 a 28.97 a 0.00 a 3681.08
1908 0.00 a 0.00 15.00 264.50 488.00 679.50 900.00 819.50 797.50 257.62 b 67.00 0.00 a 4288.62
1909 0.00 0.00 6.41 b 64.50 453.00 752.00 908.00 1053.00 578.04 b 255.75 a 112.24 a 3.00 4185.94
1910 0.00 a 0.00 234.50 339.00 370.50 788.50 931.00 838.00 561.50 437.50 13.93 b 0.00 4514.43
1911 0.00 0.50 64.50 202.50 661.50 986.00 965.50 825.50 627.50 179.28 a 0.00 c 0.00 a 4512.78
1912 0.00 b 0.00 a 3.00 229.14 a 544.00 671.38 a 938.00 838.50 542.50 304.83 a 43.45 a 4.13 a 4118.93
1913 0.00 6.00 34.74 b 228.50 479.00 883.00 977.50 1054.52 a 680.00 326.53 a 109.29 b 10.33 a 4789.41
1914 0.50 0.00 24.50 225.00 571.00 859.50 1053.00 935.50 630.52 a 454.00 109.82 b 0.00 4863.34
1915 0.00 a 0.00 0.00 428.00 391.00 661.50 837.00 749.50 586.50 317.00 36.00 e 0.00 4006.50
1916 0.00 0.00 l 29.00 0.00 z 0.00 z 0.00 z 0.00 z 925.98 d 585.00 266.00 50.50 5.17 a 1861.65
1917 0.00 0.00 20.50 98.50 364.00 686.00 974.43 a 815.00 591.50 139.50 89.50 0.00 3778.93
1918 0.00 0.50 107.00 105.00 612.25 a 796.00 897.00 991.00 466.50 373.55 a 77.68 b 0.00 k 4426.48
1919 0.00 0.00 a 42.00 f 153.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 153.00
1920 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
1921 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
1922 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
1923 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
1924 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
1925 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
1926 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
1927 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
1928 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
1929 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
1930 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
1931 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
1932 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
1933 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
1934 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
1935 0.00 z 0.00 z 0.00 z 0.00 z 444.73 e 711.50 1175.50 994.50 693.50 256.50 14.50 0.00 4290.73
1936 0.00 0.00 26.50 206.50 702.50 828.00 1260.50 1128.50 782.50 279.50 15.00 0.52 a 5230.02
1937 0.00 0.00 12.50 185.00 622.50 754.50 1033.00 1105.15 a 682.50 235.50 55.00 0.00 4685.65
1938 0.00 0.00 88.00 299.50 469.00 804.00 1035.50 1047.00 728.00 526.50 51.50 0.00 5049.00
1939 0.00 0.00 97.00 222.00 759.00 849.50 1031.00 861.50 803.00 298.00 42.00 13.50 4976.50
1940 0.00 a 0.00 12.50 155.00 516.00 852.00 1056.50 855.00 763.50 481.00 27.50 0.00 4719.00
1941 0.00 0.00 11.00 303.50 734.50 814.50 992.50 980.00 697.00 351.00 51.00 17.50 4952.50
1942 0.00 0.00 29.00 368.00 464.00 803.00 981.00 948.50 538.50 337.00 60.00 0.00 4529.00
1943 0.00 4.00 92.50 242.50 445.50 840.50 1021.50 971.50 522.50 313.50 0.00 2.00 4456.00
1944 14.00 0.00 0.00 97.00 687.50 857.50 922.50 908.50 636.00 336.00 92.50 0.00 4551.50
1945 0.00 0.00 166.50 195.00 381.50 629.50 927.00 932.00 599.50 318.00 50.50 0.00 4199.50
1946 0.00 0.00 211.00 337.50 424.00 821.50 985.50 839.50 612.50 336.50 6.50 3.50 4578.00
1947 1.50 0.00 14.50 117.50 410.50 698.00 983.50 1166.50 744.50 606.00 39.50 0.00 4782.00
1948 0.00 z 0.00 z 0.00 z 372.00 523.50 761.00 996.00 988.00 774.00 314.65 a 66.00 0.00 4795.15
1949 0.00 0.00 11.50 252.50 679.00 894.50 1051.50 966.00 519.50 386.50 77.50 0.00 4838.50
1950 0.00 0.00 14.47 a 81.50 459.00 794.50 825.63 a 790.00 622.24 a 392.50 30.50 0.00 4010.34
1951 0.00 6.00 0.00 103.00 568.50 648.00 901.00 852.00 467.00 285.00 18.00 6.72 a 3855.22
1952 0.00 0.00 a 16.00 266.00 527.50 936.00 978.57 a 899.50 692.00 215.00 81.00 1.50 4613.07
1953 0.00 0.00 51.00 115.34 a 580.00 929.00 990.50 969.00 652.50 479.50 100.50 0.50 4867.84
1954 0.00 26.00 7.50 338.50 405.00 886.00 1079.50 919.50 660.50 257.50 96.00 0.00 4676.00
1955 0.00 0.00 41.50 424.00 702.00 766.00 1165.00 1115.00 712.50 378.00 10.50 0.00 5314.50
1956 0.00 0.00 a 17.00 114.50 604.50 b 1010.50 909.00 916.00 596.50 502.50 33.50 0.00 4704.00
1957 0.00 0.00 9.00 246.00 492.00 757.50 1114.50 918.50 571.00 273.00 28.50 0.00 4410.00
1958 0.00 22.50 11.50 236.00 687.50 735.00 926.50 1037.50 740.50 420.00 83.50 0.00 4900.50
1959 0.00 0.00 35.50 259.50 645.00 954.00 989.00 1095.50 668.00 190.50 8.00 5.50 4850.50
1960 0.00 0.00 6.00 272.00 583.50 786.00 994.50 1005.50 697.00 383.50 70.00 4.00 4802.00
1961 0.00 0.00 37.50 111.00 475.00 828.50 951.00 968.50 602.00 365.50 28.50 2.50 4370.00
1962 0.00 0.00 2.50 242.00 722.50 799.50 925.00 920.00 561.50 440.00 71.50 35.00 4719.50
1963 0.00 3.50 125.00 327.00 590.00 973.00 1042.50 940.50 744.50 618.00 89.50 1.50 5455.00
1964 0.00 0.00 12.50 292.00 738.00 877.50 1109.50 862.50 644.00 342.50 153.50 0.00 5032.00
1965 0.00 0.00 0.00 199.50 694.00 858.00 992.00 898.50 440.50 395.50 57.00 0.00 4535.00
1966 0.00 1.50 136.50 137.00 509.50 856.00 1114.50 831.00 591.50 298.50 28.50 0.00 4504.50
1967 0.00 0.00 132.00 253.50 444.00 795.00 949.00 873.50 633.50 312.00 32.50 0.00 4425.00
1968 0.00 a 0.00 197.00 328.00 435.00 898.50 995.50 994.00 639.50 373.50 38.50 0.00 4899.50
1969 0.00 a 0.00 0.00 283.50 651.00 672.50 1039.50 972.00 685.50 247.00 64.00 0.00 4615.00
1970 0.00 z 0.00 a 1.50 255.00 672.00 934.50 1027.00 987.50 694.50 305.50 13.50 6.00 4897.00
1971 0.00 1.00 46.00 0.00 z 534.00 985.50 906.50 942.50 676.50 461.50 62.50 0.00 4616.00
1972 0.00 0.00 42.50 197.50 639.00 864.50 0.00 z 931.50 629.50 271.00 22.00 0.00 3597.50
1973 0.00 0.00 89.00 232.50 547.50 906.50 1005.00 1024.00 616.00 503.00 38.00 0.00 4961.50
1974 0.00 4.00 38.50 301.00 530.00 828.00 1147.00 836.50 555.50 393.00 61.50 0.00 4695.00
1975 0.00 0.00 a 13.00 143.50 709.00 824.00 1075.50 970.00 519.50 401.00 134.00 0.00 4789.50
1976 0.00 b 14.00 106.00 363.00 537.50 0.00 z 1036.00 998.00 687.00 240.50 21.50 0.00 a 4003.50
1977 0.00 8.00 65.00 381.50 708.00 797.00 980.50 0.00 z 621.67 c 257.50 64.00 0.00 3883.17
1978 0.00 0.00 60.50 151.00 561.00 804.00 0.00 z 876.00 785.00 322.50 99.50 0.00 3659.50
1979 0.00 0.00 0.00 185.00 496.00 866.00 990.50 872.50 709.50 294.50 28.50 4.13 a 4446.63
1980 2.50 0.00 0.00 z 295.00 626.50 906.00 1065.00 942.50 709.50 261.50 84.50 0.00 a 4893.00
1981 5.88 b 34.00 67.88 b 416.38 a 534.00 838.45 a 981.50 847.00 655.00 256.00 115.50 0.00 4751.59
1982 0.00 0.00 5.50 171.50 573.50 665.00 986.00 840.50 570.50 269.00 20.50 5.74 d 4107.74
1983 0.00 0.00 35.50 96.50 381.00 759.00 1081.00 1071.00 619.50 228.50 48.00 0.00 i 4320.00
1984 0.00 0.00 0.00 110.00 421.50 790.00 891.50 924.50 480.00 d 306.90 a 15.00 b 0.00 b 3939.40
1985 0.00 g 0.00 h 51.50 314.00 639.00 685.50 899.00 729.50 521.79 b 188.50 12.41 a 0.00 4041.20
1986 0.00 0.00 67.50 228.50 530.50 850.50 989.00 756.50 582.00 270.00 9.50 0.00 4284.00
1987 3.00 1.00 64.50 362.00 713.50 914.50 1026.50 511.50 n 606.00 146.00 74.00 0.00 3911.00
1988 0.00 0.00 31.00 149.00 741.00 982.50 1014.00 972.00 636.50 170.00 17.50 0.00 4713.50
1989 0.00 0.00 50.00 243.50 538.50 791.00 1029.00 903.50 582.50 336.50 5.00 0.00 4479.50
1990 0.00 0.00 39.50 220.50 445.00 840.00 909.00 879.50 712.50 218.00 73.00 0.50 4337.50
1991 0.00 1.00 41.00 245.50 622.00 918.00 926.50 896.00 583.00 259.50 0.00 0.00 4492.50
1992 0.00 0.00 39.00 100.50 570.00 736.50 703.00 720.50 533.50 264.50 2.50 0.00 3670.00
1993 0.00 0.00 7.50 101.00 446.00 659.00 884.00 880.50 417.50 241.00 0.50 0.00 3637.00
1994 0.00 0.00 26.50 197.50 619.00 843.00 823.50 788.00 657.50 317.50 52.50 0.00 4325.00
1995 0.00 0.00 53.50 68.50 418.00 837.00 943.50 986.50 508.50 230.50 0.00 0.00 4046.00
1996 0.00 1.00 16.50 103.00 373.50 843.50 857.50 848.50 524.50 280.00 10.50 0.00 3858.50
1997 0.00 0.00 17.50 152.50 324.00 869.00 952.50 845.50 672.50 367.50 6.50 0.00 4207.50
1998 0.00 4.15 a 57.50 208.00 723.00 699.50 943.50 918.00 774.50 314.00 38.00 28.00 4708.15
1999 0.00 0.00 38.00 186.50 593.50 778.00 1031.00 862.83 a 576.50 267.50 117.41 a 0.00 4451.25
2000 0.00 j 38.00 118.50 203.00 620.50 748.50 962.50 935.50 630.50 382.00 39.50 0.00 4678.50
2001 0.00 0.00 0.00 220.50 568.50 813.00 1019.50 927.50 560.36 b 276.00 219.00 7.00 4611.36
2002 8.50 0.00 4.50 224.00 408.50 928.00 1078.50 891.50 660.00 70.50 x 6.00 0.00 4209.50
2003 2.00 0.00 89.50 288.50 487.50 763.00 948.00 978.50 557.50 343.00 20.50 0.00 4478.00
2004 0.00 0.00 65.50 241.50 491.50 671.00 764.00 739.00 737.00 301.00 57.00 0.00 l 4067.50
2005 0.00 2.00 0.00 z 290.00 471.50 887.50 993.00 869.50 739.00 334.00 76.00 0.00 4662.50
2006 1.00 0.00 16.00 290.50 562.00 461.50 n 818.00 g 718.50 f 490.00 129.00 y 0.00 z 0.00 z 1359.50
2007 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
2008 0.00 0.00 e 0.00 127.00 457.00 780.50 968.00 862.50 612.00 270.50 92.00 0.00 b 4169.50
2009 0.00 0.00 45.00 184.00 0.00 z 0.00 z 0.00 z 817.50 692.50 88.00 101.00 0.00 b 1928.00
2010 0.00 f 0.00 b 35.17 e 371.50 552.50 839.00 992.50 1033.50 582.50 357.50 61.00 0.00 a 4825.17
2011 0.00 0.00 11.88 a 133.45 a 518.50 811.15 d 1113.50 906.00 532.76 a 367.50 31.03 a 0.00 4425.78
2012 0.52 a 0.00 309.45 c 323.00 688.50 893.04 b 1172.83 a 905.00 606.96 b 193.50 45.00 3.10 a 5140.90
2013 0.00 a 0.00 9.09 b 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 9.09
Period of Record Statistics
MEAN 0.41 2.19 46.70 226.61 547.49 810.68 981.01 917.49 626.63 318.79 49.88 1.76 4513.01
S.D. 1.81 6.49 54.64 91.71 109.54 86.74 92.69 93.96 87.79 97.14 38.59 5.20 399.28
SKEW 5.81 3.90 2.23 0.17 -0.03 0.02 0.22 0.20 0.07 0.67 1.20 4.51 -0.16
MAX 14.00 38.00 309.45 428.00 759.00 1010.50 1260.50 1166.50 859.00 618.00 219.00 35.00 5455.00
MIN 0.00 0.00 0.00 56.00 266.00 629.50 703.00 720.50 417.50 88.00 0.00 0.00 3637.00
NO YRS 96 100 98 99 101 99 97 99 102 99 101 98 76