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
1877 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 20.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1878 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
1879 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
1880 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
1881 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
1882 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
1883 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
1884 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
1885 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
1886 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
1887 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
1888 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
1889 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
1890 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
1891 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
1892 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
1893 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
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 x 0.00
1899 0.00 p 2.00 0.00 227.50 473.50 763.00 907.50 51.50 z 31.00 x 300.50 102.50 0.00 2776.50
1900 2.00 0.00 14.50 312.32 b 657.50 850.50 905.50 1059.50 588.50 465.50 15.50 0.00 4871.32
1901 0.00 0.00 19.50 241.00 548.50 748.50 1190.92 a 967.00 523.50 283.00 27.00 0.00 4548.92
1902 0.00 1.00 57.50 144.00 542.50 a 698.50 972.50 839.00 397.00 293.00 30.50 0.00 3975.50
1903 0.00 0.00 15.50 144.00 e 527.50 630.50 845.00 783.00 469.00 316.50 59.00 0.00 3790.00
1904 0.00 j 0.00 4.65 a 68.50 482.05 a 666.50 841.00 763.00 0.00 z 0.00 z 0.00 z 0.00 z 2825.70
1905 0.00 z 1.12 c 60.00 128.00 o 411.78 a 784.82 b 854.00 944.00 710.19 d 192.72 a 22.24 a 2.00 3982.88
1906 0.00 4.00 1.60 b 279.50 495.50 575.17 a 1010.50 939.41 c 647.59 a 246.40 b 38.79 a 0.00 4238.46
1907 0.00 a 0.00 83.00 63.62 a 264.00 743.50 961.00 a 918.00 611.00 243.87 a 6.00 e 0.00 3893.99
1908 0.00 0.00 0.00 a 300.52 a 471.72 a 654.00 885.50 788.50 778.00 0.00 z 64.50 0.00 3942.73
1909 0.00 0.00 6.50 45.50 475.00 731.50 854.50 1028.50 587.50 268.15 a 80.50 q 0.00 z 3997.15
1910 0.00 0.00 245.50 365.50 335.00 755.50 946.00 784.50 588.00 459.50 3.50 0.00 4483.00
1911 0.00 0.00 79.50 196.00 641.50 954.00 915.50 769.00 614.00 173.00 0.00 0.00 4342.50
1912 0.00 0.00 3.00 215.50 492.50 657.50 964.50 857.00 538.50 345.00 54.50 1.00 4129.00
1913 0.00 5.00 14.00 233.50 459.50 846.00 928.50 1006.50 671.50 318.00 77.00 9.50 4569.00
1914 0.00 0.00 4.00 w 216.50 564.00 825.00 1044.50 901.50 660.50 428.50 106.00 0.00 4746.50
1915 0.00 0.00 0.00 451.00 394.50 641.00 798.50 530.50 k 421.50 f 341.00 73.50 0.00 2699.50
1916 0.00 0.00 30.00 145.50 493.00 615.00 1143.50 920.00 608.50 239.00 68.50 4.00 4267.00
1917 0.00 c 0.00 a 17.50 91.00 411.00 662.59 a 982.18 a 823.57 a 368.50 l 126.58 a 116.50 0.00 3230.92
1918 0.00 c 0.50 136.92 a 121.73 d 683.66 c 847.50 726.00 i 998.09 c 409.50 321.50 48.50 4.00 g 3567.90
1919 0.00 0.00 a 32.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 32.50
1920 0.00 z 0.00 55.59 b 52.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 365.50 g 4.50 0.00 112.09
1921 0.00 7.50 79.50 314.50 589.00 1019.00 1120.50 940.50 688.50 360.00 16.50 3.50 5139.00
1922 0.00 a 0.00 26.50 201.50 618.00 892.00 922.00 1063.00 794.48 a 414.00 38.50 0.00 4969.98
1923 0.00 a 0.00 a 13.50 192.50 445.50 845.50 1121.00 891.50 718.00 263.00 45.00 3.50 4539.00
1924 0.00 6.50 o 4.50 225.50 352.50 755.69 a 925.50 961.00 527.50 480.00 25.34 a 0.00 4257.53
1925 0.00 0.00 b 66.00 420.00 480.50 798.00 990.50 1014.39 d 805.00 87.00 19.00 0.00 4680.39
1926 0.00 3.00 48.00 232.76 a 725.50 727.00 1035.50 974.50 585.00 280.00 21.00 0.00 4632.26
1927 0.00 0.50 28.00 183.50 429.00 739.50 929.50 862.00 707.50 398.50 9.50 0.00 4287.50
1928 0.00 0.00 86.50 119.50 635.50 652.50 1004.50 960.50 566.00 336.50 18.50 0.00 4380.00
1929 0.00 0.00 37.50 204.50 452.00 727.00 1023.50 999.50 520.50 337.50 7.00 0.00 4309.00
1930 0.00 29.00 25.00 275.00 501.00 808.00 1155.50 1063.50 649.50 318.00 90.00 1.50 4916.00
1931 3.50 7.50 19.63 a 294.50 497.50 978.50 1114.50 985.00 868.50 428.00 100.50 1.00 5298.63
1932 0.00 19.33 b 0.50 217.50 563.50 876.00 1109.50 991.50 644.00 255.50 33.50 7.00 4717.83
1933 0.00 13.50 33.50 233.00 518.00 1117.50 1138.00 929.00 817.00 272.50 54.00 0.00 5126.00
1934 0.00 2.50 35.50 205.50 927.50 966.00 1115.00 912.50 489.50 456.00 83.00 0.00 5193.00
1935 0.00 0.00 84.00 176.38 a 415.00 748.50 1255.00 1056.00 735.00 306.50 15.00 0.00 4791.38
1936 0.00 0.00 19.00 176.50 728.50 835.50 1346.00 1109.50 790.00 276.62 e 22.50 0.00 5304.12
1937 0.00 0.00 a 19.78 b 161.50 644.00 773.00 1123.00 1167.50 696.00 251.50 68.50 0.00 4904.78
1938 0.00 0.00 94.50 272.50 493.00 839.50 1092.00 1102.00 760.86 a 508.50 61.50 0.00 5224.36
1939 0.00 a 0.00 101.00 211.00 779.50 901.00 1112.00 971.00 768.50 275.50 56.79 b 34.00 5210.29
1940 0.00 a 0.00 7.23 a 135.00 536.00 873.00 1138.00 904.00 784.50 469.00 23.50 0.00 4870.23
1941 0.00 0.00 6.20 a 275.50 733.00 838.00 1087.07 a 1050.00 707.14 b 364.00 42.50 13.00 5116.41
1942 2.07 a 0.00 24.50 342.50 442.50 744.31 a 996.43 c 928.45 a 472.50 d 366.50 24.50 0.00 4344.26
1943 0.00 3.50 71.00 206.00 412.82 a 852.00 1046.50 990.50 476.50 333.00 1.67 c 0.50 4393.98
1944 7.00 0.00 0.00 85.50 661.50 828.50 937.50 901.00 599.50 271.50 70.00 0.00 4362.00
1945 0.00 a 0.00 137.00 137.00 346.00 614.50 905.50 929.00 571.00 293.00 25.00 0.00 3958.00
1946 0.00 0.00 140.00 350.69 a 442.50 796.50 986.00 887.50 582.00 246.50 15.50 3.00 4450.19
1947 0.50 0.00 12.00 78.50 404.00 682.50 962.50 1138.00 669.00 464.50 30.00 0.00 4441.50
1948 0.00 0.00 28.00 297.50 514.00 729.50 989.50 945.00 773.00 263.00 63.10 a 0.00 4602.60
1949 0.00 0.00 3.00 205.00 608.50 845.50 1038.00 1006.00 471.00 294.50 70.50 0.00 4542.00
1950 0.00 0.00 a 12.50 64.00 384.50 761.38 a 844.00 775.50 607.50 341.00 32.14 b 0.00 a 3822.52
1951 0.00 0.00 0.00 90.50 540.00 630.50 860.50 836.48 a 417.93 a 251.50 11.50 7.00 3645.91
1952 0.00 0.00 1.00 250.50 489.50 818.28 a 952.50 864.90 a 630.00 175.00 58.00 0.00 4239.68
1953 0.00 0.00 22.50 61.50 455.50 825.50 941.37 a 950.50 572.50 440.50 69.50 0.00 4339.37
1954 0.00 9.00 2.00 236.50 358.05 a 814.00 1044.50 891.50 591.50 188.50 68.50 0.00 4204.05
1955 0.00 0.00 21.50 341.50 642.00 719.50 1134.50 1089.50 613.50 305.87 a 2.50 0.00 4870.37
1956 0.00 a 0.00 a 9.00 74.00 535.27 a 965.69 a 896.00 902.00 554.50 427.00 31.50 0.00 4394.96
1957 0.00 0.00 4.50 221.00 412.00 719.50 1105.15 a 888.15 a 488.00 248.50 23.00 0.00 4109.80
1958 0.00 15.00 4.00 149.50 591.00 619.00 872.00 982.50 647.50 329.00 52.00 0.00 4261.50
1959 0.00 0.00 16.00 141.50 512.50 887.50 941.00 1028.00 583.00 112.50 0.50 0.00 4222.50
1960 0.00 0.00 0.00 171.00 457.50 704.50 960.50 920.50 620.00 305.00 25.00 0.50 4164.50
1961 0.00 0.00 21.00 78.50 371.00 776.50 894.50 959.50 536.50 280.50 21.50 0.00 3939.50
1962 0.00 1.00 0.00 161.50 615.00 752.50 868.00 912.50 502.00 369.50 40.00 26.50 4248.50
1963 0.00 2.50 94.50 235.50 491.50 893.50 1009.50 914.50 658.00 547.50 55.00 0.00 4902.00
1964 0.00 0.00 0.00 200.50 604.50 818.00 1084.50 801.00 529.00 246.00 104.50 0.00 4388.00
1965 0.00 0.00 0.00 105.50 554.50 762.50 924.00 871.00 314.50 322.00 39.50 0.00 3893.50
1966 0.00 0.00 73.50 82.00 413.00 784.50 1098.50 829.50 581.00 197.50 9.83 a 0.00 4069.33
1967 0.00 0.00 87.50 163.00 364.00 721.50 867.50 815.50 555.00 230.50 12.50 0.00 3817.00
1968 0.00 0.00 138.00 221.50 352.50 794.00 906.50 925.00 577.00 316.00 24.50 0.00 4255.00
1969 0.00 0.00 0.00 235.00 609.00 627.50 974.00 961.50 659.50 193.50 42.00 0.00 4302.00
1970 0.00 0.00 0.00 203.50 618.00 865.00 1006.50 970.50 647.50 280.50 2.50 2.00 4596.00
1971 0.00 0.00 44.00 289.00 484.50 943.00 862.50 978.00 642.00 411.00 42.00 0.00 4696.00
1972 0.00 0.00 20.00 161.50 638.50 813.50 928.00 926.00 592.00 235.50 15.00 0.00 4330.00
1973 0.00 a 0.00 57.50 188.50 501.00 859.00 963.00 1047.50 582.50 451.00 0.00 z 0.00 4650.00
1974 0.00 0.00 26.50 215.00 415.00 741.00 1112.00 788.50 444.83 a 255.50 26.00 0.00 a 4024.33
1975 0.00 e 0.00 6.41 b 81.50 595.20 a 743.50 1055.50 923.00 444.50 297.50 120.52 a 0.00 b 4267.63
1976 0.00 a 8.50 61.45 c 285.52 a 473.00 814.00 1047.00 1006.00 592.00 88.83 e 7.50 0.00 d 4383.79
1977 0.00 b 0.50 64.14 b 413.04 b 823.50 877.00 1084.00 782.50 616.50 201.50 a 57.12 d 0.00 b 4919.79
1978 0.00 e 0.00 57.72 b 166.00 547.00 804.81 d 940.00 927.86 b 761.50 217.50 g 91.07 b 0.00 d 4295.96
1979 0.00 c 0.00 b 0.00 a 165.00 451.50 805.00 964.50 831.50 654.50 233.50 18.50 2.77 c 4126.77
1980 4.59 d 0.00 21.50 275.50 588.48 a 852.22 c 992.00 b 913.50 647.50 209.52 b 58.50 0.00 c 4563.31
1981 9.82 a 38.00 66.00 398.00 545.50 811.50 986.50 857.50 0.00 z 227.00 0.00 z 0.00 c 3939.82
1982 0.00 a 3.00 13.00 224.50 553.50 594.00 939.00 851.50 512.50 197.00 7.50 4.13 a 3899.63
1983 0.00 c 0.00 29.00 81.00 374.00 707.00 1062.50 1074.50 568.50 181.50 46.50 0.00 4124.50
1984 0.00 0.00 0.00 113.50 382.00 740.50 885.50 923.50 405.00 0.00 z 11.00 0.00 3461.00
1985 0.00 1.00 44.00 339.50 654.50 675.00 897.50 742.50 480.00 149.00 4.00 0.00 3987.00
1986 0.00 0.00 66.00 214.00 534.00 838.00 979.00 733.50 506.50 211.50 5.50 0.00 4088.00
1987 0.00 0.00 44.50 317.50 652.50 831.50 989.50 739.50 506.00 136.00 66.50 0.00 4283.50
1988 0.00 0.00 37.50 152.00 744.50 1022.50 1061.50 1003.00 613.00 129.50 18.00 0.00 4781.50
1989 0.00 0.00 a 46.00 235.00 546.50 744.50 1048.50 886.50 536.50 285.50 9.50 0.00 4338.50
1990 0.00 0.00 42.00 233.50 459.50 839.00 904.00 905.50 700.50 201.00 69.50 0.50 4355.00
1991 0.00 1.50 53.00 257.50 609.00 930.00 909.00 897.00 572.50 235.50 3.00 0.00 4468.00
1992 0.00 3.50 38.50 109.50 608.50 736.50 706.00 734.50 538.00 254.50 1.00 0.00 3730.50
1993 0.00 0.00 17.50 123.10 a 456.00 668.00 885.50 893.00 412.50 218.00 3.50 0.00 3677.10
1994 0.00 0.00 34.00 185.50 648.00 838.00 854.00 825.00 657.00 296.50 36.00 0.00 4374.00
1995 0.00 0.00 62.50 64.50 416.00 838.00 971.00 1012.00 544.00 212.00 0.00 0.00 4120.00
1996 0.00 1.50 12.00 110.00 385.50 828.50 867.00 893.00 543.50 268.50 12.00 0.00 3921.50
1997 0.00 0.00 16.50 165.50 354.00 884.00 980.50 864.50 663.50 339.50 6.00 0.00 4274.00
1998 0.00 8.50 46.00 218.50 722.50 705.50 977.00 942.50 763.50 313.50 29.00 23.00 4749.50
1999 0.00 a 2.07 a 40.00 207.50 576.00 802.50 1056.50 906.00 574.00 238.81 d 122.00 0.52 a 4525.91
2000 0.00 c 36.00 125.50 197.00 601.50 750.50 977.00 960.00 609.50 353.50 46.00 0.00 b 4656.50
2001 0.00 b 0.00 b 0.00 233.50 576.00 815.50 1045.00 966.50 610.50 238.00 198.00 0.00 b 4683.00
2002 1.50 6.50 1.00 204.00 392.00 879.50 1106.50 892.50 662.50 118.50 10.00 0.00 4274.50
2003 0.00 0.00 66.00 268.00 462.00 751.00 966.50 977.00 552.50 328.50 16.00 0.00 4387.50
2004 0.00 0.00 63.00 235.00 459.00 680.50 892.50 722.50 730.50 274.00 48.50 0.00 4105.50
2005 0.00 a 8.50 37.00 302.00 473.50 888.00 994.00 878.00 755.50 302.00 64.50 0.00 a 4703.00
2006 0.00 0.00 20.50 278.50 545.50 811.50 1081.00 923.00 477.50 231.00 59.00 0.00 z 4427.50
2007 0.00 0.00 93.00 231.00 667.00 853.50 1035.50 923.00 666.00 346.50 31.00 0.00 4846.50
2008 0.00 0.00 0.00 123.00 421.50 738.50 971.50 887.00 599.50 223.00 74.00 0.00 4038.00
2009 0.00 0.00 38.00 155.00 504.00 726.50 783.50 790.00 662.00 66.50 70.00 0.00 a 3795.50
2010 0.00 0.00 34.00 331.00 473.50 771.00 983.50 1018.00 548.00 325.00 54.50 0.00 a 4538.50
2011 0.00 0.00 6.50 114.00 469.81 b 761.50 1080.00 892.50 517.50 365.50 27.93 a 0.00 a 4235.24
2012 2.58 a 0.00 256.78 a 305.19 d 625.00 877.24 a 1152.50 909.00 606.00 162.50 16.00 2.50 4915.30
2013 0.00 0.00 12.00 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 12.00
Period of Record Statistics
MEAN 0.30 2.16 39.09 203.58 522.33 788.46 989.50 921.48 603.72 286.61 40.35 1.40 4419.46
S.D. 1.30 6.24 44.85 87.89 115.42 97.68 103.63 92.98 105.00 96.26 33.96 4.93 394.22
SKEW 5.38 4.15 2.29 0.35 0.60 0.33 0.36 0.04 0.05 0.26 1.39 4.88 0.31
MAX 9.82 38.00 256.78 451.00 927.50 1117.50 1346.00 1167.50 868.50 547.50 198.00 34.00 5304.12
MIN 0.00 0.00 0.00 45.50 264.00 575.17 706.00 722.50 314.50 66.50 0.00 0.00 3645.91
NO YRS 111 114 114 112 112 112 111 110 107 108 109 109 97