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
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 m 0.00 0.00 u 175.00 s 746.50 864.00 952.50 930.00 493.50 198.50 20.50 0.00 4205.50
1897 7.00 0.00 17.50 172.00 482.00 708.00 1046.00 785.33 a 771.00 387.00 24.50 0.00 4400.33
1898 0.00 0.00 28.50 174.00 543.00 835.00 993.50 0.00 z 572.00 h 92.00 i 38.50 0.00 2612.50
1899 0.00 0.00 0.00 306.00 531.50 808.50 940.00 926.00 512.50 364.00 65.00 0.00 4453.50
1900 0.00 0.00 0.00 261.50 0.00 z 0.00 z 0.00 z 566.50 n 651.21 a 488.00 36.00 0.00 1436.71
1901 0.00 a 0.00 0.00 229.44 c 527.52 a 839.50 1080.87 a 908.50 578.04 b 332.00 25.00 0.00 a 4520.86
1902 0.00 1.50 41.00 183.50 558.00 668.00 973.00 794.50 249.00 o 268.50 88.50 0.00 3576.50
1903 0.00 0.00 51.50 185.00 540.50 684.50 906.50 739.23 e 545.17 a 121.50 q 0.00 j 0.00 c 3652.40
1904 0.00 0.00 a 0.52 a 95.17 a 506.85 a 714.83 a 842.50 0.00 z 0.00 z 0.00 z 58.97 a 0.00 2218.83
1905 0.00 a 0.00 56.00 167.00 416.50 737.31 d 916.50 913.00 617.00 269.50 18.50 0.00 4111.31
1906 0.00 0.00 0.00 244.00 512.50 784.00 925.00 1007.00 767.50 285.50 41.00 0.00 4566.50
1907 0.00 0.00 63.50 56.00 256.00 f 758.50 919.00 838.00 596.00 249.50 16.50 0.00 3497.00
1908 0.00 0.00 15.50 252.50 549.50 759.31 a 932.50 844.00 755.50 183.00 g 31.50 f 0.00 c 4108.81
1909 0.00 0.00 0.00 40.50 444.50 786.50 937.50 959.50 577.50 197.00 136.00 0.00 4079.00
1910 0.00 0.00 a 218.07 b 271.00 370.00 858.00 1008.50 899.00 548.50 402.00 5.00 0.00 4580.07
1911 0.00 0.00 43.50 175.50 672.00 908.50 932.00 820.98 a 570.50 221.81 b 10.00 0.00 4354.79
1912 0.00 0.00 0.50 178.93 b 476.22 b 707.59 a 926.50 752.00 627.50 308.45 a 29.50 0.00 k 4007.19
1913 0.00 0.00 34.21 b 245.36 b 292.00 l 846.50 901.67 b 882.00 603.00 249.00 h 58.85 d 8.50 3580.08
1914 0.00 b 0.00 15.50 147.41 a 594.50 720.50 1040.00 895.50 639.50 458.50 74.00 3.10 a 4588.51
1915 0.00 0.00 1.00 440.50 362.91 b 641.50 838.00 727.00 647.50 313.00 73.00 0.00 4044.41
1916 0.00 0.00 6.00 182.00 496.00 651.50 1173.00 972.00 568.00 267.63 a 46.00 2.50 4364.63
1917 0.00 0.00 2.00 120.00 370.50 685.00 1036.50 836.50 542.00 92.00 55.00 0.00 3739.50
1918 0.00 0.00 61.50 97.00 624.50 763.50 912.00 957.50 436.50 335.00 87.50 0.00 4275.00
1919 0.00 0.00 35.00 178.00 461.00 950.50 1014.50 852.50 697.50 264.00 12.00 0.00 4465.00
1920 0.00 0.00 66.50 102.00 476.50 864.00 891.00 859.50 704.50 507.00 13.50 4.50 4489.00
1921 0.50 0.00 59.00 343.50 630.50 968.00 1200.50 943.50 775.00 303.50 4.00 0.00 5228.00
1922 0.00 a 0.00 8.00 170.50 728.00 847.00 913.00 928.50 691.50 334.00 103.00 0.00 4723.50
1923 0.00 0.00 0.00 a 145.56 c 427.91 c 889.50 976.00 581.00 g 571.50 239.50 28.45 a 4.00 3282.41
1924 0.00 0.00 0.00 124.50 267.00 591.00 e 843.50 819.00 495.00 422.00 72.50 0.00 3634.50
1925 0.00 a 1.50 46.50 300.00 371.45 c 900.00 944.50 876.00 707.50 103.00 17.78 c 0.00 c 4268.22
1926 0.00 d 0.00 1.19 e 94.80 e 538.22 b 578.33 c 867.48 a 880.50 512.68 b 197.00 4.66 a 0.00 a 3674.87
1927 0.00 a 0.00 39.00 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 39.00
1928 0.00 0.00 e 50.50 m 98.50 566.27 a 641.00 944.50 901.50 529.00 380.78 a 47.50 0.00 4109.05
1929 0.00 0.00 39.50 232.00 410.00 726.00 965.00 845.78 a 625.50 310.53 b 32.50 0.00 4186.82
1930 0.00 a 22.50 25.50 243.00 582.80 a 857.50 1029.50 949.50 684.00 321.50 158.28 a 1.00 4875.08
1931 0.00 4.00 8.00 250.00 489.00 611.00 j 1099.98 a 886.50 830.00 432.50 164.50 3.00 4167.48
1932 0.00 0.00 a 12.00 139.50 534.00 862.50 985.59 b 942.50 591.00 241.80 a 32.50 0.00 4341.39
1933 0.00 0.00 3.00 150.00 560.58 a 1039.50 1038.50 862.00 868.39 b 267.50 36.00 0.00 a 4825.48
1934 2.00 0.00 1.50 160.50 760.02 a 939.00 1016.00 824.50 594.50 404.50 76.50 0.00 4779.02
1935 0.00 a 0.00 a 17.00 180.50 430.00 691.00 1141.83 a 937.00 642.00 316.00 11.00 0.00 4366.33
1936 0.00 0.00 30.50 126.50 725.29 b 771.00 1112.50 1022.00 751.50 251.50 18.10 a 15.00 4823.90
1937 0.00 0.00 6.00 134.00 601.50 814.50 1044.00 1079.00 657.00 228.00 30.00 0.00 a 4594.00
1938 0.00 0.00 130.50 288.50 537.33 a 785.00 946.00 1013.00 662.50 474.00 111.50 0.00 4948.33
1939 0.00 0.00 56.00 187.00 681.00 839.50 1051.50 916.00 727.50 295.00 30.00 14.50 4798.00
1940 0.00 a 0.00 9.50 112.00 455.50 790.50 1008.50 864.00 681.00 353.50 42.50 0.00 a 4317.00
1941 0.00 0.00 0.00 341.50 697.00 852.00 1015.00 937.00 712.50 347.50 83.50 14.50 5000.50
1942 0.00 b 0.00 15.50 365.50 529.50 773.50 956.50 886.08 a 598.00 380.55 b 55.50 0.00 a 4560.64
1943 0.00 b 0.00 53.22 a 154.00 500.00 886.00 1020.50 938.00 515.69 a 311.50 3.50 0.50 4382.91
1944 18.00 0.00 1.50 122.00 666.00 886.00 940.50 958.50 658.50 329.50 131.50 0.00 4712.00
1945 0.00 0.00 a 173.50 220.50 399.50 647.50 878.00 907.50 590.50 202.50 28.50 0.00 4048.00
1946 0.00 a 0.00 115.00 271.50 438.65 a 741.50 951.50 826.00 587.68 b 389.50 37.50 14.50 4373.33
1947 0.00 a 0.00 12.50 81.50 339.50 691.00 946.53 a 1115.00 671.00 558.00 43.50 0.00 a 4458.53
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 771.00 983.50 943.50 731.00 262.00 73.50 0.00 a 3764.50
1949 0.00 0.00 24.50 208.00 588.50 906.00 1038.00 931.50 510.52 a 430.50 61.50 2.00 4701.02
1950 0.00 0.00 1.00 44.00 484.50 810.50 849.50 763.50 259.50 r 423.50 39.00 0.00 3415.50
1951 0.00 0.00 5.68 a 129.00 644.50 681.00 938.78 a 771.38 a 500.00 271.00 2.50 16.50 3960.35
1952 0.00 0.00 4.65 a 274.00 475.00 843.50 839.50 f 925.00 617.68 b 171.50 61.00 0.00 3372.33
1953 0.00 0.00 c 22.22 a 104.00 536.50 880.00 984.50 945.00 633.50 424.00 122.00 0.52 a 4652.23
1954 0.00 0.00 7.23 a 270.00 409.50 890.50 985.00 881.00 618.00 295.50 82.00 0.00 4438.73
1955 0.00 0.00 13.50 384.00 658.00 810.00 1156.82 a 1079.00 701.00 350.00 10.00 0.00 5162.32
1956 0.00 0.00 0.00 95.00 500.00 895.00 311.50 t 901.50 539.50 457.00 101.00 0.00 b 3489.00
1957 0.00 1.50 13.00 299.00 500.50 812.14 b 1014.45 b 930.50 582.00 256.50 41.50 0.00 4451.09
1958 0.00 0.00 0.00 207.00 525.93 b 691.50 932.50 969.50 658.50 380.50 92.00 0.00 4457.43
1959 0.00 0.00 2.50 183.00 656.54 c 846.72 a 977.65 d 1054.00 678.00 193.00 9.00 0.50 4600.91
1960 0.00 0.00 18.00 279.50 496.50 738.50 911.00 940.50 678.50 307.50 47.00 6.50 4423.50
1961 0.00 0.00 a 33.00 110.69 a 475.00 818.00 958.00 929.50 643.00 360.00 43.00 5.17 a 4375.36
1962 0.00 0.00 14.00 197.50 665.00 772.00 861.00 893.66 b 523.00 378.00 7.50 33.00 4344.66
1963 0.00 0.00 55.50 243.00 464.00 851.50 984.50 850.50 620.50 550.00 66.00 0.00 4685.50
1964 1.00 0.00 9.82 a 263.00 700.00 819.50 1015.00 821.00 573.00 245.50 167.50 0.00 4615.32
1965 0.00 0.00 0.00 98.00 692.00 754.00 893.00 807.55 a 523.00 307.00 55.00 0.00 a 4129.55
1966 0.00 0.00 32.50 114.50 420.00 842.50 1046.50 829.50 576.50 300.00 33.50 0.00 4195.50
1967 0.00 0.00 44.00 192.00 383.50 802.50 857.50 749.00 561.50 274.00 27.50 0.00 3891.50
1968 0.00 0.00 135.50 252.00 456.00 787.00 927.00 885.00 637.50 368.50 30.50 1.50 4480.50
1969 0.00 0.00 3.00 222.00 553.00 572.00 927.00 939.50 584.50 254.50 30.50 0.00 4086.00
1970 0.00 0.00 0.00 261.00 572.00 854.00 1025.00 936.50 672.00 380.50 26.50 6.50 4734.00
1971 0.00 0.00 a 0.00 227.00 448.98 a 919.00 877.50 855.00 722.00 527.00 73.50 0.00 4649.98
1972 0.00 0.00 0.00 140.50 660.50 762.93 a 921.73 a 909.00 606.50 256.50 f 0.00 z 0.00 4001.16
1973 3.50 0.00 86.50 183.50 434.00 882.00 0.00 z 988.50 0.00 z 509.00 32.50 1.50 3121.00
1974 0.00 0.00 25.00 282.00 474.00 730.50 1027.50 879.00 529.00 321.50 68.00 0.00 4336.50
1975 0.00 0.00 4.00 120.50 691.50 811.00 1006.00 928.00 494.00 409.00 188.50 6.00 4658.50
1976 0.00 3.50 66.00 282.50 496.50 889.00 1024.50 894.00 616.00 214.50 13.00 0.00 4499.50
1977 0.00 0.00 94.50 369.00 778.00 730.00 1049.00 803.00 622.50 239.50 88.00 0.00 4773.50
1978 0.00 0.00 9.00 96.50 567.00 754.00 871.50 0.00 z 704.48 a 241.50 86.50 0.00 3330.48
1979 0.00 0.00 14.00 168.00 418.00 744.00 949.00 815.50 651.50 218.00 45.50 0.50 4024.00
1980 0.00 0.00 10.00 232.50 612.00 747.50 998.50 910.00 583.00 173.00 30.50 0.00 4297.00
1981 1.00 22.50 53.50 243.00 473.00 794.50 936.00 908.00 549.50 187.00 76.00 0.00 4244.00
1982 0.00 0.00 16.50 147.50 671.50 614.00 970.00 820.50 540.00 306.50 34.50 23.50 4144.50
1983 0.00 2.59 a 26.00 145.50 350.50 791.50 1076.00 1019.00 630.50 297.50 65.00 0.00 a 4404.09
1984 0.00 8.50 0.00 222.00 433.50 839.50 915.50 954.50 564.50 348.50 41.00 2.50 4330.00
1985 0.00 0.00 41.00 352.00 675.00 707.59 a 938.00 832.00 618.00 264.50 24.50 0.00 4452.59
1986 0.00 0.00 83.50 309.00 597.50 790.00 990.50 801.00 612.50 271.00 23.50 0.00 4478.50
1987 0.00 0.00 64.50 337.00 620.50 898.00 1062.00 902.50 654.50 149.00 81.50 0.00 4769.50
1988 0.50 0.00 15.50 206.00 651.50 906.50 1048.00 1029.50 652.50 178.00 22.00 0.00 4710.00
1989 0.00 0.00 39.50 157.00 498.00 739.50 981.50 917.00 580.50 313.00 18.50 0.00 4244.50
1990 0.00 0.00 86.00 308.00 409.00 768.00 924.00 885.50 683.50 206.00 106.00 2.00 4378.00
1991 0.00 0.50 40.00 274.50 663.50 887.00 942.00 915.00 532.00 270.50 15.00 0.00 4540.00
1992 0.00 0.00 10.00 117.00 537.50 687.50 781.50 772.50 545.00 272.00 9.50 0.00 3732.50
1993 0.00 0.00 18.00 100.00 514.50 682.00 911.00 911.00 428.50 225.50 13.00 0.00 3803.50
1994 0.00 0.50 24.00 184.50 540.50 850.00 894.50 800.00 725.50 344.50 77.50 2.00 4443.50
1995 0.00 0.00 69.00 81.00 488.50 907.24 a 993.00 1005.43 a 533.50 306.50 2.00 0.00 4386.17
1996 0.00 1.50 6.50 137.50 401.00 784.00 853.50 913.00 628.50 273.00 18.00 0.00 4016.50
1997 0.00 1.50 25.00 186.50 337.00 832.00 909.50 775.50 665.50 331.00 22.50 0.00 4086.00
1998 3.50 2.00 100.50 241.50 717.00 765.50 979.00 943.00 768.00 332.00 73.00 50.00 4975.00
1999 0.00 2.00 50.50 266.50 609.50 812.00 1064.00 843.50 576.50 241.00 128.50 8.00 4602.00
2000 0.00 23.50 120.00 177.50 578.50 741.00 897.50 886.50 546.43 b 330.15 a 0.00 z 0.00 c 4301.08
2001 0.00 0.00 0.00 278.50 580.00 756.50 985.00 986.00 523.97 a 231.00 154.00 24.50 4519.47
2002 1.00 0.00 0.00 225.00 393.00 815.00 1052.50 882.00 684.50 157.50 25.50 3.00 4239.00
2003 0.00 0.00 56.50 199.00 453.50 707.00 911.00 959.50 597.50 222.50 18.50 0.00 4125.00
2004 0.00 0.00 49.00 195.00 431.00 681.00 851.00 700.50 710.00 246.50 47.00 0.00 3911.00
2005 0.00 0.00 39.00 244.00 417.00 904.50 957.50 909.00 707.50 324.50 65.00 0.00 4568.00
2006 0.00 0.00 32.50 326.00 550.00 786.00 1064.00 921.00 533.00 170.50 51.00 2.00 4436.00
2007 3.00 0.00 117.00 216.50 629.00 838.00 952.00 906.00 647.50 407.50 20.50 0.00 4737.00
2008 0.00 0.00 0.50 202.50 403.00 758.50 924.50 841.50 636.00 250.50 81.00 0.00 4098.00
2009 0.00 0.00 18.00 142.00 518.00 748.00 782.50 828.00 657.50 137.00 68.00 0.00 3899.00
2010 0.00 0.00 65.50 347.00 596.50 809.50 1011.00 1005.50 533.50 302.00 35.50 0.00 4706.00
2011 0.00 a 0.00 a 7.23 a 108.00 453.50 767.00 1059.50 935.00 531.00 310.50 43.00 0.00 4214.73
2012 0.00 0.00 303.00 189.00 670.00 874.50 1137.50 921.00 585.52 a 161.00 i 0.00 z 0.00 z 4680.52
Period of Record Statistics
MEAN 0.36 0.86 34.63 201.23 530.61 791.36 969.84 895.93 618.52 305.55 51.84 2.46 4412.46
S.D. 1.87 3.74 46.36 81.38 108.45 87.00 79.04 77.49 81.44 94.55 39.94 6.98 321.22
SKEW 7.88 5.41 2.80 0.38 0.18 -0.15 0.33 0.05 0.34 0.42 1.25 4.28 -0.15
MAX 18.00 23.50 303.00 440.50 778.00 1039.50 1200.50 1115.00 868.39 558.00 188.50 50.00 5228.00
MIN 0.00 0.00 0.00 40.50 267.00 572.00 781.50 700.50 428.50 92.00 2.00 0.00 3634.50
NO YRS 115 116 114 114 112 114 112 111 111 109 111 115 94