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 9.30 a 95.50 400.00 829.50 954.50 813.00 606.50 323.00 82.50 3.50 4117.30
1894 4.50 0.00 74.50 262.50 535.50 897.00 1048.00 971.50 668.50 271.00 2.00 5.50 4740.50
1895 0.00 5.00 27.00 321.00 582.50 851.00 951.00 949.50 770.00 179.00 61.50 4.50 4702.00
1896 0.00 6.50 16.00 373.00 733.50 813.50 939.50 904.50 487.50 238.50 41.00 0.50 4554.00
1897 8.50 0.00 25.00 184.50 484.50 759.00 1004.00 783.00 799.00 460.50 38.00 0.00 4546.00
1898 0.00 0.00 38.50 181.00 551.50 859.50 992.50 868.50 687.00 219.50 43.00 0.00 4441.00
1899 0.00 0.00 0.00 316.50 552.00 792.00 956.00 955.00 579.50 440.50 94.50 0.50 4686.50
1900 0.00 0.00 0.00 325.50 630.50 795.50 909.50 1072.00 642.50 520.50 34.00 1.50 4931.50
1901 0.00 0.00 7.50 270.00 565.50 847.00 1114.00 936.50 589.00 346.50 23.00 0.00 4699.00
1902 0.00 2.00 59.50 178.50 592.62 a 633.00 910.50 780.50 533.00 317.23 a 123.00 0.00 4129.85
1903 0.00 0.00 52.50 193.00 583.00 661.00 878.50 747.50 531.72 a 291.00 64.50 0.00 4002.72
1904 0.00 0.00 4.00 118.50 514.50 736.00 865.50 745.00 642.00 317.00 100.50 0.00 4043.00
1905 0.00 0.00 98.50 215.00 470.00 776.00 897.00 922.00 698.00 278.00 30.50 0.00 4385.00
1906 0.00 0.00 0.00 335.00 559.00 796.50 933.50 971.00 763.00 322.50 64.00 0.00 4744.50
1907 0.00 a 0.00 105.00 62.00 318.50 731.00 936.50 843.50 569.00 256.00 16.00 0.00 3837.50
1908 0.00 0.00 31.50 239.00 572.50 723.50 958.50 862.50 825.50 323.00 76.00 0.00 4612.00
1909 1.00 0.00 0.00 86.00 514.50 793.50 953.50 1036.50 598.00 255.00 155.00 9.00 4402.00
1910 0.00 a 0.00 268.00 389.00 441.50 922.00 1101.50 972.00 605.00 433.50 5.00 0.00 5137.50
1911 0.00 0.00 86.50 238.00 753.00 970.50 1017.00 852.00 674.00 275.50 4.50 0.00 4871.00
1912 0.00 0.00 0.50 262.00 599.00 763.00 966.50 854.50 661.00 359.50 80.50 2.00 4548.50
1913 1.50 0.50 49.50 282.50 529.50 885.50 978.00 953.00 611.50 284.00 70.50 16.00 4662.00
1914 0.00 b 0.00 13.12 e 241.00 596.50 775.50 968.00 879.37 a 630.50 453.00 81.50 0.00 4638.48
1915 0.00 0.00 1.50 447.00 356.00 638.00 817.50 683.00 629.00 350.00 87.00 0.00 4009.00
1916 0.50 0.00 29.50 180.00 499.00 623.28 a 1130.47 a 975.00 576.35 d 314.50 51.21 a 3.50 4383.30
1917 0.00 0.00 15.00 132.00 388.50 649.00 961.00 791.00 540.00 101.27 a 79.50 0.00 3657.27
1918 0.00 a 4.00 85.00 85.00 588.00 711.00 894.50 928.50 432.50 379.50 97.76 a 4.50 4210.26
1919 0.00 0.00 a 49.00 202.76 a 477.92 a 909.50 1055.00 263.50 u 732.00 292.00 9.50 0.00 3727.68
1920 0.00 0.00 51.50 89.00 0.00 z 0.00 z 808.50 f 966.50 0.00 z 0.00 z 0.00 z 0.00 z 1107.00
1921 0.00 z 5.50 o 73.48 d 343.50 608.50 928.00 0.00 z 894.72 b 699.00 288.00 8.00 0.00 d 3843.21
1922 0.00 0.00 b 21.18 a 177.50 674.00 804.50 843.00 614.00 j 686.50 384.00 97.00 0.00 3687.68
1923 0.00 0.00 11.00 181.00 534.00 862.50 b 471.50 q 844.15 e 596.25 b 230.00 38.50 0.53 b 3297.94
1924 0.00 0.00 0.00 197.50 278.00 646.80 e 820.00 815.50 431.54 d 451.00 36.60 e 0.00 3676.94
1925 0.00 0.00 47.50 338.28 a 355.00 k 582.50 h 881.43 a 861.59 b 735.50 117.50 22.20 e 0.00 3004.00
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 65.00 123.50 647.50 724.00 1062.00 950.67 a 572.50 389.00 41.00 0.00 4575.17
1929 0.00 a 0.00 51.50 261.72 a 442.50 757.50 1013.91 b 902.00 597.50 298.63 a 11.25 b 0.00 4336.52
1930 0.00 57.56 a 35.00 252.41 a 569.00 821.67 c 827.50 h 1036.00 699.50 317.23 a 163.50 0.00 a 3951.87
1931 0.00 4.67 a 5.68 a 281.38 a 481.02 a 997.78 c 1157.50 949.38 c 872.68 b 408.68 a 120.50 0.50 5279.76
1932 0.00 a 7.77 a 12.50 186.50 616.38 a 910.34 a 1075.50 971.00 589.00 237.00 23.50 7.75 a 4637.25
1933 2.00 1.68 c 25.00 197.00 568.16 b 1077.00 1060.00 910.88 a 799.14 a 272.50 36.50 5.17 a 4955.02
1934 0.00 b 0.00 c 9.82 a 187.00 859.73 a 1045.50 1123.00 920.50 599.50 434.00 91.03 a 0.00 5270.08
1935 0.00 a 0.00 82.67 a 180.50 438.65 a 733.50 1152.50 980.00 671.50 311.60 b 7.50 0.00 a 4558.42
1936 0.00 0.00 52.50 157.24 a 709.38 a 777.50 1212.50 1054.00 704.50 237.67 a 18.00 16.00 4939.29
1937 0.00 0.00 4.28 b 180.00 603.00 788.00 1091.00 1111.00 698.00 230.00 47.50 0.00 4752.78
1938 0.00 0.00 132.00 268.50 486.18 a 812.14 b 1006.00 1014.00 631.80 e 515.00 101.50 0.00 4967.13
1939 1.00 0.00 79.00 227.07 a 692.50 893.33 c 1022.00 0.00 z 733.50 272.50 54.00 0.00 z 3974.90
1940 0.00 a 0.00 10.50 172.50 485.31 b 877.50 1082.42 a 917.71 b 704.50 415.00 60.00 0.00 a 4725.43
1941 0.00 d 0.00 8.50 382.76 a 713.50 850.50 1043.50 1011.50 719.50 369.50 82.50 7.23 a 5188.99
1942 0.00 0.00 30.47 b 331.00 481.00 804.31 a 971.00 916.50 580.50 396.28 a 43.50 0.00 4554.56
1943 0.00 g 1.08 b 46.50 170.17 a 438.50 926.00 1009.50 955.50 493.00 305.50 0.50 0.00 4346.25
1944 10.00 0.00 0.00 138.50 655.00 872.50 930.00 956.50 658.50 311.00 110.50 0.00 4642.50
1945 0.00 0.00 193.50 199.50 364.00 638.50 891.50 902.00 615.00 248.00 60.00 0.00 4112.00
1946 0.00 0.00 159.50 309.50 493.00 786.50 987.00 851.50 624.50 422.00 37.50 25.50 4696.50
1947 1.00 0.00 10.50 119.50 379.00 724.00 956.50 1173.00 725.00 616.50 49.50 0.00 4754.50
1948 0.00 2.50 69.00 345.00 505.00 828.00 1069.00 1038.50 851.00 334.50 87.00 10.50 5140.00
1949 0.00 a 0.00 30.00 83.00 m 0.00 z 0.00 z 0.00 z 1035.50 518.00 479.47 a 83.50 0.00 2146.47
1950 0.00 b 0.00 0.50 78.00 509.36 b 797.50 872.50 798.50 629.00 442.50 54.31 a 0.00 a 4182.17
1951 0.00 0.00 b 5.88 b 114.00 667.02 a 713.00 926.38 a 835.50 574.82 b 318.78 a 14.50 9.00 4178.88
1952 0.00 0.00 a 8.00 310.00 535.00 866.00 1033.00 839.07 a 647.00 192.50 99.64 b 0.00 a 4530.21
1953 0.00 0.00 29.89 c 85.34 a 486.91 b 840.00 b 951.38 b 954.00 652.76 a 484.50 115.50 0.50 4600.79
1954 0.00 c 5.00 8.50 287.59 a 350.82 a 887.50 992.53 b 875.50 643.50 289.00 70.34 a 0.00 4410.28
1955 0.00 0.00 19.12 a 380.36 b 637.57 a 759.50 1142.00 1104.50 687.00 321.76 b 3.50 0.00 5055.30
1956 0.00 0.00 0.00 135.00 b 492.00 915.00 879.88 a 907.00 533.04 b 454.00 105.50 0.00 b 4421.42
1957 0.00 6.50 12.50 274.50 462.00 792.50 1039.00 881.43 a 564.50 262.00 35.50 2.07 a 4332.50
1958 0.00 b 10.64 c 2.00 g 207.00 e 437.00 g 537.50 f 730.50 f 271.00 w 355.50 m 338.00 f 98.40 e 0.00 d 316.04
1959 0.00 a 0.00 6.20 a 198.00 679.00 848.50 926.50 1010.50 649.50 200.50 12.00 3.50 4534.20
1960 0.00 0.00 18.00 289.00 517.00 702.50 890.50 932.00 691.00 311.00 49.50 10.50 4411.00
1961 0.00 0.00 33.00 98.00 456.50 804.50 916.50 907.50 613.00 357.00 39.50 5.00 4230.50
1962 0.00 0.00 17.00 205.50 696.00 774.50 833.50 869.00 517.00 401.00 18.00 32.50 4364.00
1963 0.00 0.00 96.00 257.00 491.50 884.00 981.00 840.50 633.00 611.00 87.50 0.00 4881.50
1964 1.50 2.00 19.50 259.50 715.00 839.00 1048.50 839.00 600.50 239.50 194.50 0.00 4758.50
1965 0.00 0.00 0.00 137.50 662.50 761.00 0.00 z 860.50 542.50 319.00 71.50 3.50 3358.00
1966 0.00 4.00 73.50 132.00 409.00 819.50 1007.50 830.50 567.50 304.00 59.00 0.00 4206.50
1967 0.00 0.00 76.50 218.50 406.50 814.00 868.50 791.00 556.50 275.00 28.00 0.50 4035.00
1968 0.00 0.00 132.00 278.50 452.50 779.00 920.50 921.50 589.50 356.00 32.50 8.00 4470.00
1969 0.00 0.00 2.00 266.50 571.50 594.00 940.50 925.50 609.50 255.50 40.00 0.00 4205.00
1970 0.00 0.00 0.00 257.50 587.00 830.50 981.50 875.00 621.50 347.00 23.50 6.00 4529.50
1971 0.00 0.00 16.50 244.50 448.00 915.50 830.00 829.50 697.50 497.50 66.00 0.00 a 4545.00
1972 0.00 0.00 7.50 163.50 641.50 760.50 873.50 913.00 607.00 224.00 17.50 0.00 4208.00
1973 8.00 0.00 91.45 a 178.50 419.02 a 839.50 985.00 953.50 589.50 475.50 22.00 3.00 4564.97
1974 0.00 0.00 24.00 270.00 449.50 697.00 1028.00 829.50 497.00 316.00 63.00 0.00 a 4174.00
1975 0.00 0.00 1.00 130.00 638.00 802.50 987.50 933.00 490.00 391.00 169.66 a 9.00 4551.66
1976 0.00 b 2.00 88.50 272.00 475.50 851.50 988.00 882.50 585.50 211.50 10.50 0.00 4367.50
1977 0.00 0.00 133.00 449.00 795.50 814.50 1024.50 786.50 598.50 219.00 82.00 0.00 4902.50
1978 0.00 0.00 26.50 144.00 560.00 753.00 923.50 884.10 e 733.00 197.50 84.50 0.00 4306.10
1979 0.00 0.00 21.50 0.00 z 487.73 a 761.90 a 901.00 651.50 h 447.00 j 175.00 k 13.00 l 0.00 n 2172.13
1980 0.00 m 0.00 i 6.95 b 234.83 a 591.00 771.67 c 651.50 j 902.00 603.50 182.00 49.00 0.00 k 3340.94
1981 0.00 j 21.00 78.02 a 239.50 f 466.50 794.48 a 910.76 b 862.50 527.00 202.00 72.00 0.00 3934.26
1982 0.00 0.00 5.50 144.50 604.50 637.50 957.50 795.00 530.00 286.00 36.00 26.00 4022.50
1983 0.00 0.00 44.00 106.00 312.50 752.00 1007.50 970.00 578.50 247.00 69.31 a 0.00 4086.81
1984 0.00 8.50 0.00 155.00 377.50 780.00 871.00 924.00 501.00 298.50 24.50 6.50 3946.50
1985 0.00 0.00 32.00 375.00 633.00 667.50 911.50 750.50 586.00 254.00 9.00 0.00 4218.50
1986 0.00 0.00 96.62 a 284.50 547.00 762.00 941.50 696.00 562.50 239.00 14.50 0.00 4143.62
1987 0.00 0.00 79.00 324.00 624.00 852.50 1032.00 819.00 592.00 132.00 95.00 0.00 4549.50
1988 1.50 0.00 b 15.00 184.50 610.00 852.50 0.00 z 1011.50 0.00 z 150.00 34.00 0.00 2859.00
1989 3.50 0.00 65.10 a 188.50 486.50 717.50 982.50 859.50 518.50 337.50 28.50 0.00 4187.60
1990 0.00 0.00 68.50 266.50 420.00 773.50 0.00 z 850.50 633.50 266.50 85.50 0.00 3364.50
1991 0.00 0.00 50.00 250.00 616.00 872.50 893.50 855.50 489.50 218.50 4.00 0.00 4249.50
1992 0.00 0.00 22.00 106.50 493.50 651.00 714.50 676.00 490.50 222.50 1.50 0.00 3378.00
1993 0.00 a 0.00 10.50 102.00 477.50 656.50 835.00 850.50 372.00 195.50 13.00 0.00 3512.50
1994 0.00 5.00 27.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 298.00 62.00 0.00 392.50
1995 0.00 0.00 84.00 86.00 438.50 839.50 954.50 1034.00 522.00 235.50 0.00 0.00 4194.00
1996 0.00 0.00 9.00 112.00 387.00 748.00 810.50 822.50 546.00 250.00 3.00 0.00 3688.00
1997 0.00 0.00 23.50 166.00 320.50 783.00 870.50 734.00 566.00 300.50 6.50 0.00 3770.50
1998 0.00 7.50 97.50 233.50 646.50 717.50 891.00 877.50 692.00 289.50 69.50 37.00 4559.00
1999 0.00 0.50 44.50 217.00 541.50 771.50 1026.00 816.00 523.50 223.00 97.50 16.02 a 4277.02
2000 0.00 42.00 109.00 194.50 528.00 689.00 871.00 888.50 582.00 357.00 56.50 0.00 4317.50
2001 0.00 0.00 0.00 307.00 537.00 724.00 936.20 a 915.00 518.00 218.50 168.50 24.50 4348.70
2002 5.50 0.00 7.50 239.50 404.00 819.00 998.50 856.50 646.50 155.50 19.50 0.00 4152.00
2003 1.00 0.00 62.00 232.00 460.00 712.00 909.00 956.00 576.00 266.00 32.00 1.00 4207.00
2004 0.00 1.50 77.00 224.50 514.00 690.00 848.50 709.00 560.00 h 0.00 z 0.00 z 0.00 z 3064.50
2005 0.00 z 0.00 z 0.00 z 112.50 o 411.27 a 892.50 973.50 880.00 731.50 315.00 50.50 0.00 4254.27
2006 0.00 0.00 23.00 283.00 503.00 770.50 1011.50 898.50 498.00 181.50 65.00 0.00 4234.00
2007 0.00 0.00 b 125.00 208.50 591.50 804.50 929.00 899.00 640.00 406.50 16.00 0.00 4620.00
2008 0.00 0.00 1.50 161.50 412.50 759.50 918.00 840.00 641.50 229.50 100.00 0.00 b 4064.00
2009 0.00 0.00 46.00 156.00 492.50 736.00 742.50 785.50 659.50 113.50 71.50 0.00 3803.00
2010 0.00 0.00 117.50 325.50 535.50 774.00 965.50 963.50 529.00 357.00 46.50 0.00 4614.00
2011 0.00 a 0.00 4.00 124.00 446.00 742.50 1023.50 892.00 511.00 331.00 34.00 0.00 4108.00
2012 0.00 0.00 324.00 174.00 618.50 825.00 1112.00 856.00 562.50 163.00 h 0.00 z 0.00 z 4472.00
Period of Record Statistics
MEAN 0.46 1.82 44.73 218.59 529.72 792.80 963.49 895.05 613.74 309.08 55.71 2.93 4417.58
S.D. 1.62 7.06 52.40 85.19 108.46 87.85 89.36 90.68 89.10 99.81 40.70 6.76 383.56
SKEW 4.36 6.17 2.40 0.38 0.25 0.33 0.13 0.17 0.34 0.58 0.91 3.11 -0.10
MAX 10.00 57.56 324.00 449.00 859.73 1077.00 1212.50 1173.00 872.68 616.50 194.50 37.00 5279.76
MIN 0.00 0.00 0.00 62.00 278.00 594.00 714.50 676.00 372.00 101.27 0.00 0.00 3378.00
NO YRS 112 115 116 113 113 113 107 112 112 113 114 112 96