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
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 7.50 u 20.00 395.00 801.00 867.50 964.00 922.50 479.00 206.00 35.00 0.50 4690.50
1897 6.00 0.00 16.00 186.00 511.50 755.50 1035.00 763.50 722.00 376.00 23.00 0.00 4394.50
1898 0.00 0.00 c 30.50 155.50 523.00 840.50 957.50 811.00 612.50 189.50 35.00 0.00 4155.00
1899 0.00 1.50 0.50 338.00 579.00 890.00 1008.02 a 967.00 538.00 418.50 58.50 0.50 4799.52
1900 0.00 0.00 0.00 299.00 665.00 825.00 924.00 1075.00 665.00 535.50 39.00 1.55 a 5029.05
1901 0.00 0.00 3.50 273.00 622.50 912.00 1225.50 0.00 z 635.00 403.50 40.00 0.00 4115.00
1902 0.00 5.50 83.00 258.50 668.00 726.50 996.50 838.50 572.00 367.00 156.50 0.00 4672.00
1903 0.00 0.50 94.00 275.00 652.00 731.00 958.00 790.50 627.50 349.50 78.50 0.00 4556.50
1904 0.00 0.00 3.50 136.00 577.50 782.00 891.00 811.50 655.50 341.50 105.50 0.00 4304.00
1905 0.00 0.00 91.50 216.00 514.00 796.03 a 935.17 d 926.90 a 723.33 c 254.00 f 33.50 0.00 4236.43
1906 0.50 0.00 0.00 c 308.50 546.00 758.00 905.00 972.50 742.50 323.50 56.00 0.00 4612.50
1907 0.00 0.50 84.00 64.00 334.00 752.00 946.00 834.50 588.00 234.50 15.50 0.50 3853.50
1908 0.00 0.00 38.50 275.50 595.00 773.00 972.00 882.50 797.50 365.00 73.00 0.00 4772.00
1909 0.00 0.00 0.00 66.50 535.00 816.50 953.50 999.50 603.00 224.50 165.50 8.50 4372.50
1910 0.00 0.00 248.00 356.50 450.00 888.00 1095.00 961.00 602.00 418.50 0.00 z 0.00 5019.00
1911 0.00 0.00 65.00 240.00 767.50 1064.50 1097.40 a 0.00 z 731.00 282.00 17.00 4.50 4268.90
1912 0.00 0.00 0.50 279.50 613.50 795.50 1015.50 876.50 703.50 382.50 61.03 a 1.50 4729.53
1913 0.00 4.50 47.00 285.50 552.00 931.00 1008.50 968.00 680.00 344.00 123.00 20.50 4964.00
1914 0.00 0.00 23.00 267.00 708.00 860.17 a 1116.50 1000.00 728.00 513.50 95.50 6.00 5317.67
1915 0.00 0.00 1.00 501.00 441.00 709.50 904.00 783.50 717.00 393.00 113.50 0.00 4563.50
1916 1.00 0.00 19.50 224.50 556.00 704.00 1235.50 1038.00 637.00 337.50 77.00 13.00 4843.00
1917 0.00 0.00 21.50 158.00 451.50 701.50 1044.00 879.00 580.50 114.00 65.00 0.00 4015.00
1918 0.00 a 0.00 96.50 129.83 a 702.00 848.50 975.50 1025.00 525.00 440.00 101.00 6.50 4849.83
1919 0.00 0.00 45.50 223.00 519.00 984.00 1099.00 929.50 779.00 344.50 24.50 0.00 4948.00
1920 0.00 0.00 90.50 149.50 574.50 939.50 990.50 930.00 791.50 564.50 27.00 11.50 5069.00
1921 4.00 3.50 103.50 402.00 711.50 1036.50 1250.50 997.50 809.00 366.00 25.50 0.00 5709.50
1922 0.00 0.00 38.00 236.00 805.50 935.50 975.50 1029.00 808.50 453.00 137.50 3.00 5421.50
1923 0.00 0.00 11.50 219.50 588.00 1007.00 1127.00 932.50 695.00 314.00 69.00 11.00 4974.50
1924 0.00 0.00 4.00 217.50 392.00 760.50 937.00 906.50 539.00 495.50 89.00 1.00 4342.00
1925 0.00 6.00 64.50 402.00 514.50 905.50 1000.00 986.50 829.00 152.00 47.00 0.00 4907.00
1926 0.00 0.00 13.50 197.00 643.50 723.00 1019.00 980.50 643.00 309.00 39.50 0.00 4568.00
1927 0.00 6.00 76.00 217.00 508.50 774.50 964.50 854.00 769.00 446.00 53.00 0.00 4668.50
1928 3.00 0.00 74.00 148.50 703.50 728.00 1036.50 975.00 590.00 454.00 67.50 2.50 4782.50
1929 0.00 0.00 63.00 339.00 508.50 786.00 1049.50 928.00 687.50 365.00 37.50 0.00 4764.00
1930 0.00 50.00 38.50 299.50 651.00 897.50 1103.50 1061.00 756.00 348.50 192.50 1.00 5399.00
1931 0.00 0.00 18.00 346.50 544.50 1017.41 a 1180.50 1007.00 921.00 504.50 226.50 10.00 5775.91
1932 2.00 18.00 14.00 201.50 647.00 966.50 1097.00 1000.00 661.50 296.00 43.50 6.72 a 4953.72
1933 5.00 3.50 13.50 201.50 626.00 1138.50 1089.50 944.00 853.50 319.00 49.00 8.00 5251.00
1934 5.50 0.00 17.50 214.00 837.00 1032.50 1111.00 914.00 622.50 457.00 122.00 0.00 5333.00
1935 0.00 0.00 55.00 203.50 447.50 749.00 1168.00 988.00 699.00 372.00 29.00 0.00 4711.00
1936 0.00 4.50 65.50 192.00 798.00 818.50 1217.00 1103.00 784.00 303.50 47.50 22.50 5356.00
1937 0.00 0.00 5.50 174.00 627.50 850.00 1106.00 1137.50 733.50 274.50 68.00 0.00 4976.50
1938 0.00 0.00 179.00 327.50 578.50 833.00 1046.00 1057.50 693.50 516.00 139.00 0.00 5370.00
1939 0.00 0.00 67.00 212.50 758.00 908.00 1112.50 1001.00 826.50 411.50 51.50 8.50 5357.00
1940 0.00 0.00 a 15.00 155.00 507.00 864.00 1056.00 910.00 725.00 463.00 63.00 0.00 4758.00
1941 0.00 0.00 5.17 a 398.00 756.00 882.00 1056.00 1016.00 769.50 425.00 100.00 27.00 5434.67
1942 0.00 0.00 38.50 409.00 556.00 853.00 1018.50 947.50 629.50 396.00 75.00 0.00 4923.00
1943 0.00 0.50 74.00 204.50 536.00 960.50 1086.00 1009.50 579.00 357.00 10.50 7.00 4824.50
1944 20.00 0.50 6.00 160.50 744.50 926.50 996.50 1015.50 733.50 381.50 157.00 0.00 5142.00
1945 0.00 0.00 237.50 262.50 458.50 702.50 933.50 951.00 659.50 310.00 80.00 0.00 4595.00
1946 1.50 0.00 157.50 374.00 531.50 828.50 1032.00 912.00 682.00 479.50 74.00 28.50 5101.00
1947 0.00 z 0.00 z 18.50 v 195.50 454.00 757.50 974.00 1159.00 754.00 615.50 49.50 0.00 4959.00
1948 0.00 0.00 71.50 353.28 a 553.00 843.00 1051.50 1000.78 a 795.50 307.00 114.00 4.50 5094.06
1949 0.00 0.00 36.50 263.50 653.50 936.00 1087.00 991.50 539.50 492.00 97.50 1.00 5098.00
1950 1.50 0.00 10.00 98.00 456.50 h 851.38 a 915.00 807.50 657.00 504.61 d 58.89 c 0.00 3903.88
1951 0.00 0.00 15.50 c 164.00 703.00 759.00 964.50 852.50 d 587.88 d 362.50 27.00 25.12 b 4461.01
1952 0.00 d 1.00 13.00 369.00 554.50 944.48 a 1104.08 e 905.50 687.00 206.67 a 134.00 0.00 f 4919.23
1953 2.30 d 0.00 a 48.50 50.00 o 305.50 n 373.50 r 498.00 p 1000.30 c 413.50 n 313.00 m 113.50 f 8.78 a 1059.88
1954 0.00 i 19.92 b 14.47 a 348.50 433.00 926.00 1018.50 896.50 682.50 348.50 91.00 0.00 4778.89
1955 0.00 0.00 22.98 b 422.14 b 677.50 775.00 1167.50 1112.00 733.00 420.57 a 19.50 2.00 5352.19
1956 0.00 0.00 0.50 162.50 567.50 941.50 917.50 948.50 582.50 530.50 131.50 3.00 4785.50
1957 1.00 7.50 24.00 325.00 519.00 855.50 1050.50 943.50 617.50 281.50 58.50 2.50 4686.00
1958 0.00 5.00 0.50 261.00 632.50 731.50 951.00 1007.00 706.00 459.00 137.50 0.00 4891.00
1959 0.00 0.00 7.50 239.50 743.00 893.00 979.50 1067.00 718.00 237.00 21.50 6.00 4912.00
1960 0.00 0.00 22.50 336.50 573.00 781.00 955.50 971.00 755.50 373.50 77.50 15.00 4861.00
1961 1.00 1.00 41.00 146.00 529.50 871.00 1012.50 999.50 717.00 398.00 62.00 9.50 4788.00
1962 0.00 0.00 24.50 244.50 742.50 851.50 920.50 988.00 588.00 465.50 24.50 36.00 4885.50
1963 0.00 0.00 85.50 328.50 540.00 930.00 1063.50 920.50 696.00 674.00 131.00 0.00 5369.00
1964 3.50 0.50 29.50 300.00 772.50 889.00 1092.50 895.00 646.00 314.50 222.00 0.00 5165.00
1965 0.00 0.00 0.00 171.00 720.00 742.50 888.67 a 825.00 415.50 h 354.00 86.00 8.50 3795.67
1966 0.00 4.00 73.50 160.00 416.50 807.50 987.50 802.50 544.00 299.00 69.00 1.00 4164.50
1967 1.50 0.00 73.50 205.50 375.00 808.50 861.00 741.00 533.50 295.00 31.00 0.00 3925.50
1968 0.00 0.00 153.50 246.50 460.00 795.00 932.50 909.50 615.50 384.00 44.50 6.00 4547.00
1969 0.00 0.00 11.00 237.00 563.00 572.50 933.50 930.50 599.00 261.00 23.00 0.00 4130.50
1970 0.00 0.00 0.00 241.00 596.00 785.00 981.50 875.50 612.00 348.50 16.00 3.50 4459.00
1971 0.00 0.00 14.50 235.00 444.50 919.50 851.00 801.00 684.44 c 506.00 64.50 0.00 4520.44
1972 0.00 0.00 l 6.00 159.50 623.00 712.50 884.50 913.50 627.50 236.50 26.50 0.00 4189.50
1973 13.43 a 0.00 111.50 202.50 451.00 848.50 995.00 948.50 631.50 476.50 25.00 9.00 4712.43
1974 0.00 0.00 28.00 294.50 468.50 712.50 1000.50 833.00 479.00 303.50 61.50 0.00 4181.00
1975 0.00 0.00 2.00 101.50 639.50 785.50 934.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2462.50
1976 0.00 3.00 99.50 251.50 449.00 842.00 983.50 816.50 541.00 211.00 12.50 0.00 4209.50
1977 0.00 0.00 124.52 a 409.00 758.50 753.00 1066.00 796.00 647.50 257.50 116.50 3.50 4932.02
1978 0.00 0.00 34.00 156.50 573.50 798.00 908.00 894.50 735.50 235.50 93.50 0.00 4429.00
1979 0.00 0.00 26.50 184.50 489.50 760.00 909.50 852.00 642.00 271.00 57.50 8.00 4200.50
1980 0.00 0.00 12.50 249.50 597.50 762.41 a 1020.50 941.00 635.00 202.00 61.50 4.50 4486.41
1981 2.50 34.00 96.00 310.50 499.00 806.50 912.00 867.00 580.00 272.50 90.00 0.00 4470.00
1982 0.00 0.00 26.50 193.00 690.00 640.50 958.50 805.00 516.50 328.00 66.00 43.00 4267.00
1983 0.00 3.00 59.50 155.00 373.50 793.00 1040.00 984.00 593.00 260.00 102.93 a 0.00 4363.93
1984 0.00 24.00 0.00 226.50 496.00 886.50 918.50 1012.00 629.50 420.00 65.50 12.50 4691.00
1985 0.00 0.00 68.00 457.00 721.00 750.50 960.00 487.50 l 661.50 272.00 20.50 0.00 3910.50
1986 0.00 0.00 90.50 336.00 592.50 807.50 1011.50 787.00 636.00 307.50 27.00 0.00 4595.50
1987 0.00 0.00 79.00 340.50 635.00 965.00 1116.00 928.50 661.00 161.50 105.00 2.00 4993.50
1988 5.00 0.00 41.00 225.00 675.00 923.00 1068.00 1061.50 670.50 168.50 59.50 1.50 4898.50
1989 0.00 1.50 61.50 173.00 513.50 769.50 1002.50 901.50 573.00 354.00 26.50 0.00 4376.50
1990 0.00 0.50 102.50 305.00 411.50 815.50 950.50 906.00 699.00 238.50 127.50 1.50 4558.00
1991 0.00 2.50 69.50 311.50 708.50 918.50 972.00 930.00 560.50 280.50 35.00 1.00 4789.50
1992 0.00 1.50 33.00 134.00 571.00 732.50 818.00 776.00 552.50 274.50 18.50 0.00 3911.50
1993 0.00 0.00 18.50 148.50 578.00 744.50 955.00 971.50 462.50 243.00 21.50 0.50 4143.50
1994 0.00 5.00 33.00 260.00 564.50 885.00 917.00 821.00 728.00 379.00 83.00 9.00 4684.50
1995 0.00 0.00 92.00 113.50 512.50 941.00 1023.00 1101.50 565.50 341.50 2.00 0.00 4692.50
1996 0.00 2.00 17.50 144.00 425.50 822.50 890.00 910.00 639.00 307.50 22.00 0.00 4180.00
1997 0.00 1.50 50.50 203.00 381.00 854.50 937.00 790.00 647.00 337.50 23.00 0.00 4225.00
1998 1.50 15.00 109.00 275.00 722.50 804.00 999.00 982.50 765.50 350.50 102.50 61.00 5188.00
1999 0.00 9.00 64.50 281.00 634.50 858.50 1103.50 880.50 602.00 267.50 151.00 20.50 4872.50
2000 0.00 42.50 142.00 219.50 628.50 797.50 930.00 956.50 643.50 409.00 83.00 0.00 4852.00
2001 0.00 0.00 2.00 326.00 626.50 810.00 1019.50 1004.50 563.00 278.50 224.00 29.50 4883.50
2002 8.50 10.00 20.50 264.50 457.00 882.50 1077.00 945.00 746.00 226.00 45.00 5.50 4687.50
2003 3.00 2.50 84.00 241.50 493.50 770.50 960.50 1017.00 649.50 293.00 45.50 3.50 4564.00
2004 0.00 2.00 95.50 252.00 499.00 760.50 910.00 769.00 747.50 319.00 89.00 0.50 4444.00
2005 0.00 2.00 56.00 316.00 481.00 971.50 1010.00 940.50 784.50 345.00 89.50 0.00 4996.00
2006 0.00 0.00 38.00 332.00 580.50 808.50 1063.50 950.00 548.50 211.50 95.50 4.50 4632.50
2007 7.50 0.00 136.50 240.50 680.00 879.50 998.50 960.00 711.50 492.00 39.50 0.00 5145.50
2008 0.52 a 0.00 4.00 234.00 467.00 852.00 988.00 909.00 700.50 290.00 116.00 0.00 4561.02
2009 0.00 2.50 49.00 177.00 583.50 814.50 800.00 856.50 689.00 178.50 97.00 2.50 4250.00
2010 0.00 0.00 73.50 378.50 635.50 857.00 1071.50 1054.00 613.50 389.00 80.50 0.50 5153.50
2011 0.00 4.00 15.00 155.00 526.00 818.00 1110.50 960.00 569.50 351.33 a 80.50 4.00 4593.83
2012 2.00 3.00 365.00 229.00 707.50 923.00 1203.50 944.00 606.50 191.00 h 0.00 z 0.00 z 4983.50
Period of Record Statistics
MEAN 0.91 2.76 51.81 248.23 580.71 837.42 1009.30 934.31 661.76 348.82 72.50 5.02 4746.37
S.D. 2.68 7.68 55.95 86.23 110.19 91.93 88.69 88.03 87.31 103.05 47.24 9.61 399.76
SKEW 4.64 4.27 2.41 0.39 0.16 0.37 0.44 -0.03 0.18 0.38 1.10 3.15 0.08
MAX 20.00 50.00 365.00 501.00 837.00 1138.50 1250.50 1159.00 921.00 674.00 226.50 61.00 5775.91
MIN 0.00 0.00 0.00 64.00 334.00 572.50 800.00 741.00 462.50 114.00 2.00 0.00 3853.50
NO YRS 114 114 116 116 115 116 116 113 114 113 113 114 102