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
1893 0.00 0.00 4.00 129.00 394.50 426.50 o 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 527.50
1894 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
1895 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
1896 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
1897 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
1898 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
1899 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
1900 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
1901 0.00 z 0.00 z 0.00 z 208.00 494.50 822.00 1062.00 908.50 608.04 b 69.50 y 0.00 o 0.00 4103.04
1902 0.00 0.00 54.50 162.50 496.50 635.50 937.50 770.00 550.50 291.50 110.50 0.00 4009.00
1903 0.00 0.00 37.00 163.50 515.50 673.50 923.00 432.00 m 597.00 151.00 p 72.50 0.00 2982.00
1904 0.00 0.00 7.50 97.50 529.00 735.50 865.00 797.50 627.00 314.00 96.00 0.00 4069.00
1905 0.00 0.00 73.00 168.50 412.50 723.50 896.00 950.84 b 695.50 323.00 31.00 1.50 4275.34
1906 0.00 a 0.00 0.00 226.50 475.00 729.00 0.00 z 0.00 z 784.00 309.50 39.00 0.00 2563.00
1907 3.00 0.00 65.00 42.00 292.00 772.00 922.00 838.00 592.50 236.00 17.50 0.00 3780.00
1908 0.00 0.00 13.50 219.50 522.50 763.50 956.00 887.00 820.50 365.50 63.50 0.00 4611.50
1909 0.00 0.00 a 0.00 44.50 447.50 790.50 946.00 970.30 a 578.00 224.20 c 137.00 7.00 4145.00
1910 0.00 e 0.00 195.50 259.44 c 446.50 917.50 1097.73 c 971.73 e 619.50 429.00 4.00 0.00 4940.91
1911 0.00 a 1.50 0.50 r 205.00 710.50 979.00 1037.00 903.00 639.00 264.00 13.00 2.50 4754.50
1912 0.00 0.00 1.50 190.50 541.00 795.00 1000.50 806.00 678.00 289.50 f 46.50 0.00 4059.00
1913 0.00 2.50 34.00 243.00 503.00 917.00 976.50 1005.00 663.00 312.50 65.00 12.50 4734.00
1914 0.00 0.00 2.67 b 159.50 616.50 746.38 a 1013.00 899.50 641.00 457.00 63.10 a 2.50 4601.16
1915 0.00 0.00 0.00 413.50 349.50 624.50 842.17 a 771.38 a 640.00 318.00 81.00 0.00 4040.05
1916 0.00 0.00 a 1.50 160.50 477.00 635.50 1186.50 976.00 552.00 256.00 50.00 3.00 4298.00
1917 0.00 0.00 3.50 86.00 335.00 608.50 995.50 799.00 552.00 81.50 35.00 0.00 3496.00
1918 0.00 a 0.00 46.00 77.00 584.00 744.50 882.00 972.00 450.00 348.50 80.00 6.00 4190.00
1919 0.00 0.00 c 20.67 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 20.67
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 9.83 a 0.00 a 9.83
1927 0.00 0.00 22.50 141.50 372.00 647.50 860.00 734.50 685.50 345.00 32.00 0.00 3840.50
1928 1.50 0.00 26.50 76.00 512.50 618.50 923.00 883.50 510.00 350.50 40.50 0.00 3942.50
1929 0.00 0.00 22.00 190.50 376.50 656.50 940.50 802.00 615.50 262.00 32.00 0.00 3897.50
1930 0.00 a 16.50 11.50 151.50 528.50 785.36 b 997.00 956.50 683.50 314.50 138.50 0.00 4583.36
1931 0.00 0.00 4.00 199.00 430.00 858.10 a 1088.50 905.50 813.00 435.00 171.00 1.00 4905.10
1932 0.00 a 0.00 4.13 a 110.50 476.50 853.50 961.50 933.00 623.00 250.50 26.00 1.50 4240.13
1933 0.00 a 0.00 a 1.50 120.50 518.00 979.00 1002.50 857.50 771.50 253.50 36.50 0.00 c 4540.50
1934 0.00 0.00 0.00 110.00 659.27 a 892.00 979.00 794.50 580.00 366.00 73.00 0.00 4453.77
1935 0.00 a 0.00 19.50 119.00 358.50 640.50 1072.50 920.50 616.00 294.50 22.00 0.00 4063.00
1936 0.00 0.00 24.28 a 95.50 670.00 735.00 1127.50 998.72 a 764.48 a 246.50 16.03 a 9.50 4687.52
1937 0.00 0.00 0.00 103.00 536.50 800.50 1088.50 1099.50 667.76 a 223.00 44.50 0.00 4563.26
1938 0.00 0.00 95.50 252.00 521.00 817.50 983.50 1031.00 628.50 459.00 114.50 0.00 4902.50
1939 0.00 0.00 38.00 147.00 624.00 856.50 1049.00 980.00 734.50 301.50 32.00 11.50 4774.00
1940 0.00 0.00 5.50 106.00 456.00 787.50 1024.50 891.50 686.50 384.50 53.50 0.00 4395.50
1941 0.00 0.00 0.00 305.50 669.50 857.00 1024.00 942.50 706.00 352.50 54.00 9.50 4920.50
1942 0.00 a 0.00 5.00 314.50 466.50 758.00 941.50 881.00 558.00 328.00 28.00 0.00 4280.50
1943 0.00 0.00 27.50 122.50 476.00 899.50 1059.50 962.50 523.50 289.50 3.50 0.00 4364.00
1944 6.50 0.00 1.00 93.00 615.00 865.50 967.50 974.50 627.00 255.00 98.04 b 0.00 4503.04
1945 0.00 0.00 181.50 193.50 365.50 685.50 905.00 936.00 606.50 226.50 34.00 0.00 4134.00
1946 0.00 0.00 81.50 243.50 446.00 745.50 990.00 875.00 636.00 432.50 70.00 22.50 4542.50
1947 0.00 0.00 0.00 a 95.00 338.42 a 702.86 b 983.45 b 1162.50 747.41 a 610.70 a 52.24 a 0.00 4692.58
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 774.50 994.50 971.50 763.00 279.50 84.00 2.50 3869.50
1949 0.00 0.00 11.50 195.50 562.50 914.50 1035.50 954.00 504.00 423.50 67.50 5.50 4674.00
1950 0.00 0.00 5.00 38.00 474.00 771.21 a 877.50 735.00 588.10 a 401.00 28.00 0.00 3917.81
1951 0.00 0.00 5.00 102.00 595.00 704.50 921.50 812.00 544.00 287.00 14.50 8.50 3994.00
1952 0.00 0.00 11.00 287.00 490.50 830.00 1035.50 899.50 658.50 162.23 a 84.00 0.00 4458.23
1953 0.00 0.00 25.50 92.00 502.50 860.50 998.50 967.50 656.50 467.00 127.00 5.00 4702.00
1954 0.00 3.00 11.50 250.00 381.50 865.00 972.50 860.77 a 623.00 293.00 55.50 0.00 4315.77
1955 0.00 0.00 10.50 325.00 606.50 796.50 1134.60 a 1079.50 670.86 a 368.50 15.00 0.00 5006.96
1956 0.00 0.00 0.00 82.50 447.50 873.50 862.83 a 913.47 a 551.50 492.50 101.50 0.00 4325.30
1957 0.00 0.00 8.00 271.50 450.50 801.50 1017.00 902.50 579.50 282.50 35.50 0.00 4348.50
1958 0.00 a 0.50 3.00 190.50 492.00 638.50 913.00 912.50 619.00 365.50 101.00 0.00 4235.50
1959 0.00 0.00 3.00 164.50 677.50 877.50 1004.00 1060.50 692.50 193.50 13.00 0.00 4686.00
1960 0.00 0.00 8.00 238.00 472.00 733.50 931.00 938.50 665.50 311.00 35.00 6.50 4339.00
1961 0.00 1.00 19.50 97.50 444.85 a 798.50 959.00 929.00 676.00 354.50 39.00 3.00 4321.85
1962 0.00 0.00 7.00 174.00 651.50 784.00 873.50 939.00 561.00 389.00 14.50 18.50 4412.00
1963 0.00 0.00 48.50 226.00 451.00 888.00 1016.00 873.00 633.00 616.00 91.50 0.00 4843.00
1964 0.00 0.00 3.00 231.50 688.50 832.50 1030.50 833.00 576.00 264.50 164.50 0.00 4624.00
1965 0.00 0.00 0.00 94.50 619.00 750.00 903.50 849.50 547.00 303.50 52.00 2.00 4121.00
1966 0.00 0.50 22.00 121.50 386.00 857.50 0.00 z 856.00 598.00 283.00 30.00 0.00 3154.50
1967 0.00 0.00 46.00 168.00 344.00 822.00 917.50 790.00 624.00 267.50 19.00 0.50 3998.50
1968 0.00 0.00 110.00 237.00 442.50 785.50 939.00 930.00 677.50 368.00 28.50 4.00 4522.00
1969 0.00 0.00 5.00 182.50 517.00 584.00 924.50 1012.50 631.50 249.50 40.50 0.00 4147.00
1970 0.00 0.00 0.00 230.50 506.50 822.50 1013.50 955.00 654.50 376.00 33.50 7.00 4599.00
1971 0.00 0.00 6.00 159.50 441.50 899.00 885.50 840.50 713.50 494.50 52.50 0.00 4492.50
1972 0.00 0.00 0.50 105.50 626.00 711.00 914.50 880.50 596.00 218.50 29.50 0.00 4082.00
1973 1.00 0.00 58.00 163.50 398.00 845.50 985.00 990.50 647.50 476.00 22.00 5.50 4592.50
1974 0.00 0.00 18.00 207.00 397.00 699.50 1002.50 882.00 490.00 284.00 57.00 0.00 4037.00
1975 1.50 0.00 2.50 87.00 652.50 794.50 1011.50 927.00 507.50 365.50 186.50 5.00 4541.00
1976 0.00 0.00 45.50 209.00 443.00 884.50 1010.50 895.50 586.50 198.00 7.50 0.00 4280.00
1977 0.00 0.00 76.50 344.50 778.00 745.00 1050.00 829.50 633.00 272.50 103.50 0.50 4833.00
1978 0.00 0.00 8.00 76.00 565.00 758.00 879.50 938.50 719.50 271.00 88.50 0.00 4304.00
1979 0.00 0.00 10.50 137.50 438.50 757.00 975.50 842.00 661.50 231.50 25.00 0.00 4079.00
1980 0.00 0.00 7.00 219.50 627.00 742.00 1027.50 949.50 641.00 183.00 24.50 0.00 4421.00
1981 0.00 16.50 61.00 225.00 509.43 a 836.00 998.50 926.50 555.50 200.00 79.50 0.00 4407.93
1982 0.00 a 0.00 12.00 146.00 675.50 646.00 1026.00 831.50 574.50 332.50 0.00 z 0.00 z 4244.00
1983 0.00 0.00 24.50 135.00 361.00 831.00 1122.20 a 1018.50 651.00 304.00 61.50 0.00 a 4508.70
1984 0.00 4.00 0.00 175.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 179.50
1985 0.00 z 0.00 36.00 354.50 688.50 768.00 998.00 897.50 689.00 321.37 a 27.00 0.00 4779.87
1986 0.00 a 0.00 90.50 313.50 613.50 780.00 1048.50 836.50 645.00 292.50 21.50 0.00 4641.50
1987 0.00 0.00 65.50 344.00 660.00 945.00 1107.50 935.00 697.00 169.50 86.00 4.00 5013.50
1988 0.00 0.00 19.00 199.00 686.00 936.50 1122.50 1094.00 689.50 182.00 45.00 1.00 4974.50
1989 0.00 0.00 39.50 156.50 527.50 781.00 1030.50 955.00 627.50 339.50 16.00 0.00 4473.00
1990 0.00 1.00 76.50 320.50 435.50 844.50 956.00 926.00 712.50 259.00 114.50 0.00 4646.00
1991 0.00 0.00 45.00 290.00 716.50 934.00 984.50 979.00 595.50 279.00 24.00 0.00 4847.50
1992 0.00 0.00 16.50 141.50 566.50 723.50 830.50 809.50 585.00 261.50 14.00 0.00 3948.50
1993 0.00 0.00 19.00 114.50 523.50 675.00 929.50 933.00 431.50 205.00 17.50 0.00 3848.50
1994 0.00 1.50 10.50 167.50 526.50 834.50 888.50 791.50 687.00 302.50 61.50 0.00 4271.50
1995 0.00 0.00 61.50 76.50 461.00 902.00 1004.00 1017.00 543.00 275.00 1.50 0.00 4341.50
1996 0.00 2.00 4.50 99.50 359.50 749.00 839.00 923.00 605.00 238.50 15.00 0.00 3835.00
1997 0.00 2.50 19.50 159.50 296.50 813.00 899.00 769.00 608.00 320.50 7.00 0.00 3894.50
1998 0.00 8.50 74.00 221.00 680.50 768.00 959.50 935.50 742.00 317.00 62.50 34.00 4802.50
1999 0.00 0.00 57.00 204.00 604.00 805.50 1054.50 839.50 598.00 240.50 104.50 9.00 4516.50
2000 0.00 29.50 101.00 151.00 552.00 744.00 884.00 897.50 635.56 c 372.00 54.50 0.00 4421.06
2001 0.00 b 0.00 b 0.00 283.50 581.00 818.00 1024.50 996.50 576.50 253.68 a 132.00 19.50 4685.18
2002 1.50 0.00 2.00 215.00 366.50 839.00 1049.00 893.50 711.50 156.50 21.50 0.00 4256.00
2003 0.50 0.00 46.50 194.00 461.00 728.50 959.50 991.00 646.50 271.50 28.00 3.00 4330.00
2004 0.00 0.00 54.50 185.50 424.00 694.00 867.50 743.00 766.00 299.50 72.50 1.00 4107.50
2005 0.00 0.00 39.00 231.00 409.00 923.50 982.00 949.50 726.00 327.00 88.20 e 0.00 4675.20
2006 0.00 0.00 22.00 268.00 516.50 759.50 1064.00 919.00 539.00 178.00 65.00 2.00 4333.00
2007 2.00 0.00 102.50 201.50 610.00 873.00 974.00 951.50 726.50 484.00 44.50 0.00 4969.50
2008 0.00 e 0.00 3.00 204.50 445.50 819.50 989.50 899.00 701.00 290.50 93.00 0.00 4445.50
2009 0.00 1.00 30.50 144.00 523.50 776.50 818.50 862.50 672.00 152.50 97.50 0.00 4078.50
2010 0.00 0.00 50.50 344.50 626.50 834.50 1057.00 1039.00 554.50 326.50 60.50 0.00 4893.50
2011 0.00 0.00 7.50 106.50 438.00 744.00 1065.50 936.50 544.00 341.00 67.50 0.00 4250.50
2012 0.00 2.50 304.00 171.50 643.50 866.00 1145.00 914.00 586.50 184.00 h 0.00 z 0.00 z 4633.00
Period of Record Statistics
MEAN 0.17 0.91 31.28 180.75 510.84 788.82 982.20 911.96 632.86 309.05 55.85 2.33 4398.78
S.D. 0.77 3.76 44.87 77.94 107.68 86.96 76.89 82.01 75.29 92.42 39.51 5.30 329.61
SKEW 6.28 5.75 3.21 0.54 0.21 -0.14 0.11 0.14 0.05 0.75 1.03 3.48 -0.13
MAX 6.50 29.50 304.00 413.50 778.00 979.00 1186.50 1162.50 820.50 616.00 186.50 34.00 5013.50
MIN 0.00 0.00 0.00 38.00 292.00 584.00 818.50 734.50 431.50 81.50 1.50 0.00 3496.00
NO YRS 103 104 103 104 103 103 101 101 103 99 101 102 93