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 p 0.00 0.50 g 43.45 a 272.00 h 814.14 a 941.00 789.50 503.50 273.50 63.50 0.00 3428.59
1894 0.00 0.00 50.52 d 193.45 a 395.77 a 830.00 927.00 764.15 a 641.50 258.85 a 6.00 6.20 a 4073.43
1895 0.00 c 7.50 f 9.00 161.50 503.75 a 766.00 777.00 803.00 678.50 141.05 a 30.00 a 0.00 3869.80
1896 0.00 8.00 8.00 269.00 651.00 770.00 898.50 875.00 467.50 183.79 c 15.50 1.00 4147.29
1897 3.62 a 0.00 b 8.50 104.46 b 377.00 626.50 988.38 a 765.50 716.67 c 354.43 a 20.50 n 0.00 3945.06
1898 0.00 0.00 21.59 c 156.50 482.88 e 758.28 a 920.00 809.10 a 686.38 a 293.35 d 51.72 a 0.00 4179.81
1899 0.00 0.00 e 0.00 g 269.46 b 468.00 774.50 928.50 926.50 516.00 378.50 92.88 d 1.79 e 4356.14
1900 0.00 0.00 0.50 221.00 501.50 715.50 893.46 c 1062.00 673.50 535.00 43.00 0.00 b 4645.46
1901 0.00 0.00 a 0.00 213.50 454.50 784.00 1087.00 963.50 571.73 d 340.48 a 23.50 0.00 b 4438.21
1902 0.00 b 0.52 a 60.85 d 173.65 d 490.63 e 662.68 b 947.71 c 791.69 e 543.00 238.24 d 130.50 i 0.00 l 3908.98
1903 0.00 m 0.00 z 73.22 b 132.22 c 487.45 b 667.00 922.50 732.63 a 566.50 270.00 64.00 0.00 3915.53
1904 0.00 a 0.00 b 0.00 88.50 480.00 703.00 823.64 b 749.00 565.50 242.50 54.50 0.00 3706.64
1905 0.00 0.00 49.50 128.00 366.00 707.00 845.00 860.00 670.00 279.00 21.00 0.00 3925.50
1906 0.00 b 0.50 0.00 185.00 444.50 738.50 883.00 933.00 749.50 285.50 25.50 0.00 a 4245.00
1907 0.00 e 0.00 z 32.50 17.00 242.00 722.50 897.97 a 793.50 578.79 a 214.93 a 15.00 0.00 3514.19
1908 0.00 0.00 7.00 189.50 492.00 735.00 905.50 861.50 740.00 357.00 45.00 0.00 l 4332.50
1909 0.00 b 0.00 0.00 22.24 a 414.88 a 776.50 915.50 945.00 572.50 205.50 126.00 1.00 3979.12
1910 0.00 a 0.00 182.00 192.50 328.00 807.50 964.50 867.45 c 559.50 382.00 0.54 b 0.00 4283.98
1911 0.00 0.00 b 33.00 171.50 596.50 871.00 918.00 804.93 b 577.76 a 242.00 12.50 0.50 4227.69
1912 0.00 a 0.00 2.00 116.90 a 444.50 679.00 874.72 a 727.43 b 626.00 375.21 b 39.50 0.00 3885.25
1913 0.00 0.00 19.50 162.00 419.00 798.50 879.50 842.17 a 601.03 a 288.50 63.50 19.00 4092.70
1914 0.00 0.00 0.50 68.79 a 546.24 b 708.10 a 992.00 b 831.83 a 623.04 b 448.47 a 81.50 3.50 4303.97
1915 0.00 a 0.00 b 0.00 340.00 329.00 598.00 798.00 691.54 e 624.00 321.50 81.96 b 0.00 3784.00
1916 0.00 a 0.00 2.50 125.00 454.00 637.50 1095.50 917.71 b 529.00 288.00 37.76 a 0.52 a 4087.48
1917 0.00 0.00 2.00 66.00 293.50 610.00 971.52 c 775.50 623.00 120.00 0.00 x 0.00 a 3461.52
1918 0.00 2.07 a 34.50 f 65.89 b 498.30 d 714.50 853.02 a 872.50 382.50 271.00 63.00 0.00 z 3722.78
1919 0.00 0.00 15.00 134.50 195.00 i 1023.00 e 1105.50 0.00 z 816.50 278.50 19.29 b 0.00 3392.29
1920 0.00 z 0.00 z 0.00 z 96.92 d 428.00 810.00 785.00 839.14 b 676.50 484.50 25.00 h 0.00 4120.06
1921 0.00 a 0.00 32.55 a 282.50 480.50 881.50 1141.00 854.50 752.50 289.69 b 10.50 0.00 4725.24
1922 0.00 0.00 3.00 125.19 d 0.00 z 762.00 e 869.03 a 830.05 b 465.50 f 298.00 87.50 0.00 2974.78
1923 0.00 0.00 0.00 136.07 b 401.50 707.50 h 955.83 a 754.00 607.00 240.50 63.50 0.50 3158.90
1924 0.00 0.00 1.50 79.00 241.28 a 426.50 i 793.00 805.50 482.68 b 419.50 55.56 c 0.00 2878.02
1925 0.00 0.00 a 30.00 213.00 347.50 770.69 a 865.50 889.50 641.79 b 72.52 c 17.50 0.00 3847.99
1926 0.00 0.00 4.50 96.50 445.50 603.50 912.00 843.50 496.00 216.50 12.50 0.00 3630.50
1927 0.00 0.00 35.50 108.00 341.52 a 649.00 834.50 721.50 640.50 286.50 29.50 0.00 3646.52
1928 0.00 0.00 11.50 64.00 444.00 599.00 900.00 843.50 458.00 296.50 26.50 0.50 3643.50
1929 0.00 0.00 28.00 136.00 347.50 642.00 916.50 774.50 576.50 255.50 13.50 0.00 3690.00
1930 0.00 13.48 a 8.00 137.00 497.00 812.68 b 940.50 918.24 b 630.00 a 287.50 96.00 1.00 4341.40
1931 0.00 a 0.00 2.00 166.00 411.50 856.00 1042.00 850.50 799.50 421.00 148.00 1.00 4697.50
1932 1.03 a 0.00 2.50 95.00 460.50 836.50 968.00 951.91 b 600.50 206.50 16.00 2.50 4140.95
1933 0.00 0.00 0.00 100.00 524.00 1030.80 e 1001.50 842.88 b 739.50 224.50 27.00 0.00 4490.18
1934 0.00 0.00 1.50 116.00 605.50 843.50 905.20 a 734.50 542.00 306.38 a 49.50 h 0.00 4054.58
1935 0.00 0.00 23.50 128.50 334.50 644.50 1062.50 895.00 535.00 250.00 17.07 a 0.00 3890.57
1936 0.00 0.00 8.50 86.00 600.50 628.45 a 1111.00 978.50 670.00 220.00 15.00 20.00 4337.95
1937 0.00 a 0.00 0.00 87.50 475.00 734.00 982.50 1015.50 579.50 197.00 17.50 0.00 4088.50
1938 0.00 0.00 75.50 254.00 439.50 719.00 900.00 942.50 528.50 389.00 93.00 0.00 4341.00
1939 1.00 0.00 39.00 131.50 502.00 759.50 908.50 846.00 599.50 242.00 10.00 7.50 4046.50
1940 0.00 a 0.00 b 7.50 70.50 359.50 693.50 889.50 784.50 589.00 288.50 29.50 0.00 3712.00
1941 0.00 0.00 0.00 252.00 547.00 769.00 931.00 833.50 647.00 302.50 68.00 10.50 4360.50
1942 0.00 a 0.00 2.00 309.00 406.00 720.50 891.77 a 855.50 541.50 313.00 40.50 0.00 4079.77
1943 0.00 0.00 28.00 97.00 311.00 g 842.00 959.50 884.00 456.00 275.00 8.50 2.00 3552.00
1944 19.00 0.00 0.50 80.00 573.00 810.00 894.00 887.00 590.50 251.50 110.50 0.00 4216.00
1945 0.00 0.00 150.00 207.00 356.50 653.00 865.00 905.00 606.50 229.00 36.50 0.00 4008.50
1946 0.00 0.00 113.00 244.50 419.50 723.00 937.50 829.25 a 609.50 387.00 64.82 b 16.02 a 4344.09
1947 0.00 0.00 9.00 135.52 a 0.00 z 474.50 j 942.00 1139.50 700.00 0.00 z 50.50 0.00 a 2976.52
1948 0.00 0.00 27.00 223.00 447.00 750.00 971.33 a 953.00 721.00 296.22 d 87.50 k 0.00 z 4388.56
1949 0.00 z 0.00 p 16.50 219.11 b 539.00 886.03 a 1058.13 a 936.50 537.00 414.50 51.00 0.00 a 4657.77
1950 0.00 0.00 a 0.53 b 49.14 a 438.50 793.00 841.59 d 693.00 548.33 c 387.50 37.00 0.00 3788.60
1951 0.00 0.00 9.50 130.00 636.00 686.00 926.00 768.50 535.50 325.50 12.93 a 13.78 d 4043.71
1952 0.00 a 0.00 11.50 299.00 486.00 826.50 1006.00 875.00 645.00 182.00 66.96 b 1.00 4398.96
1953 0.00 0.00 30.00 80.50 458.50 804.00 953.50 949.50 627.00 424.70 a 144.64 b 3.00 4475.34
1954 0.00 0.00 10.16 b 219.00 350.50 830.50 931.00 825.00 579.00 287.50 52.50 0.00 4085.16
1955 0.00 a 0.00 6.50 303.50 606.00 774.50 1079.00 1043.50 671.00 348.00 19.00 0.00 g 4851.00
1956 0.00 h 0.00 0.00 60.00 a 443.00 816.00 846.50 886.00 521.00 473.78 a 110.89 b 0.00 d 4157.18
1957 0.00 1.50 1.15 d 263.00 457.50 793.00 955.00 858.00 554.00 258.50 41.50 1.50 4184.65
1958 0.00 0.50 0.00 a 159.50 440.00 636.50 896.50 899.52 a 603.21 b 328.50 94.50 0.00 4058.73
1959 0.00 0.00 0.00 143.57 b 635.50 a 827.50 925.00 1019.90 a 663.00 216.50 17.00 0.00 4447.97
1960 0.00 0.00 2.00 209.50 425.50 708.00 855.82 c 930.50 681.50 308.50 61.50 7.50 4190.32
1961 0.00 0.00 24.50 90.00 425.00 777.50 906.00 915.50 691.00 337.00 42.00 9.00 4217.50
1962 0.00 0.00 6.00 165.00 617.42 a 720.00 840.50 873.50 541.50 370.50 14.00 28.00 4176.42
1963 0.00 0.00 34.00 201.00 429.50 837.50 397.50 s 842.50 627.50 549.00 80.00 0.00 3601.00
1964 0.00 0.00 z 8.00 205.00 628.50 778.50 978.10 b 795.00 582.00 271.00 166.50 0.00 4412.60
1965 0.00 0.00 0.00 78.00 542.00 713.50 853.50 841.00 524.00 331.00 49.00 2.00 3934.00
1966 0.00 0.00 19.00 95.00 380.00 813.50 990.45 a 840.50 589.00 317.00 18.00 0.00 4062.45
1967 0.00 0.00 22.00 139.00 j 322.00 776.50 863.50 762.50 568.50 272.50 25.00 0.00 3612.50
1968 0.00 0.00 80.00 196.50 409.00 737.50 899.00 843.00 648.50 375.00 0.00 z 0.00 z 4188.50
1969 0.00 z 0.00 z 0.00 d 121.00 382.50 498.00 844.00 920.00 541.50 157.00 9.31 a 0.00 a 3473.31
1970 0.00 0.00 0.00 168.50 408.50 767.00 1003.00 871.00 586.00 303.50 13.50 1.50 4122.50
1971 0.00 0.00 0.00 108.00 380.50 859.50 826.50 762.00 624.00 422.50 34.00 0.00 4017.00
1972 0.00 0.00 0.00 63.00 526.50 656.90 a 851.00 802.00 469.50 168.50 21.00 0.00 3558.40
1973 0.00 j 0.00 34.00 59.00 j 323.50 765.50 931.50 886.50 574.00 406.50 12.00 4.50 3938.00
1974 0.00 0.00 7.00 163.00 325.00 621.00 947.00 812.50 393.50 188.00 54.00 0.00 3511.00
1975 0.00 0.00 2.00 57.50 581.00 733.00 955.50 843.00 414.50 289.50 152.00 3.50 4031.50
1976 0.00 0.00 19.00 187.50 350.00 811.55 a 931.00 799.00 481.00 166.50 2.50 0.00 3748.05
1977 0.00 0.00 40.50 249.50 669.00 689.00 970.50 735.50 551.00 218.00 76.00 0.00 4199.00
1978 0.00 0.00 0.00 67.50 512.50 677.07 a 824.50 835.50 623.79 a 193.00 76.00 0.00 3809.86
1979 0.00 0.00 2.50 126.00 330.50 682.00 896.00 763.50 574.66 a 190.00 27.50 0.00 3592.66
1980 0.00 a 0.00 3.50 174.11 b 537.00 632.50 920.00 862.00 498.50 133.00 16.50 0.00 3777.11
1981 0.00 9.00 45.00 142.00 347.00 703.00 861.50 825.00 492.00 130.00 49.00 0.00 3603.50
1982 0.00 0.00 6.50 81.00 583.50 546.50 900.50 716.50 482.00 299.00 29.00 21.50 3666.00
1983 0.00 0.00 9.50 97.00 243.00 708.00 1034.00 956.00 600.50 283.50 57.00 0.00 3988.50
1984 0.00 1.00 0.00 139.00 352.50 770.00 883.50 887.00 510.00 331.00 40.50 4.50 3919.00
1985 0.00 0.00 12.50 234.50 559.00 638.50 864.00 779.50 569.00 217.00 16.00 0.00 3890.00
1986 0.00 0.00 52.00 228.00 530.50 671.50 918.00 710.00 527.50 195.00 15.00 0.00 3847.50
1987 0.00 0.00 32.50 237.50 494.50 826.00 959.50 794.50 567.00 105.50 63.00 0.00 4080.00
1988 0.00 0.00 5.50 0.00 z 520.00 820.50 956.00 918.50 568.50 115.00 0.00 z 0.00 3904.00
1989 0.00 0.00 25.00 87.00 0.00 z 653.28 a 882.50 0.00 z 522.00 313.00 18.00 0.00 2500.78
1990 0.00 0.00 z 46.50 250.50 0.00 z 677.00 0.00 z 753.50 534.50 166.00 87.50 0.00 a 2515.50
1991 0.00 0.00 21.50 214.00 558.00 802.50 831.50 877.00 474.00 194.00 10.00 0.00 3982.50
1992 0.00 0.00 0.00 81.00 442.00 608.00 693.00 688.00 472.50 214.50 8.50 0.00 3207.50
1993 0.00 a 0.00 11.50 59.00 426.50 614.50 868.00 850.00 399.31 a 156.00 8.00 0.50 3393.31
1994 0.00 0.50 12.00 151.00 460.50 767.50 828.00 728.50 628.50 275.50 56.00 0.00 3908.00
1995 0.00 0.00 49.00 32.50 395.50 834.00 896.50 957.50 482.50 285.00 2.07 a 0.00 3934.57
1996 0.00 0.00 4.00 71.00 324.50 702.50 768.50 860.50 574.00 211.50 12.50 0.00 3529.00
1997 0.00 a 0.00 5.50 120.00 254.50 737.00 837.00 723.00 593.00 271.50 18.00 0.00 3559.50
1998 0.00 5.00 71.50 173.50 642.50 732.00 882.00 881.50 683.50 294.50 56.50 32.50 4455.00
1999 0.00 0.00 42.50 185.50 544.50 769.50 974.50 780.50 531.50 187.50 107.00 4.50 4127.50
2000 0.00 9.00 93.00 125.00 499.50 688.00 810.00 808.50 510.00 326.50 64.50 0.00 3934.00
2001 0.00 0.00 0.00 210.00 a 526.00 724.00 914.00 935.50 516.50 221.50 126.50 18.50 4192.50
2002 1.00 0.00 2.50 175.00 310.00 784.50 1024.50 864.50 676.50 175.50 22.50 1.50 4038.00
2003 1.00 0.00 44.00 143.00 399.00 680.00 892.00 914.50 578.00 210.00 13.50 0.00 3875.00
2004 0.00 0.00 24.50 155.00 366.00 639.50 825.00 714.00 713.00 257.50 49.00 0.00 3743.50
2005 0.00 5.00 22.00 170.50 369.00 870.00 937.00 893.00 681.00 342.00 49.50 0.00 4339.00
2006 0.00 0.00 16.00 257.00 513.00 738.50 1003.50 861.00 518.00 169.50 51.50 0.00 4128.00
2007 1.00 0.00 89.00 210.00 563.00 819.50 889.50 903.50 659.50 431.00 16.00 0.00 4582.00
2008 0.00 z 0.00 0.00 171.00 350.50 741.50 900.50 819.50 613.50 232.00 75.00 0.00 3903.50
2009 0.00 0.00 17.50 113.50 454.00 703.50 751.50 783.50 617.50 130.00 70.00 0.00 3641.00
2010 0.00 0.00 45.00 263.50 575.50 746.00 965.50 953.00 505.00 293.50 41.50 0.00 4388.50
2011 0.00 0.50 8.50 72.50 408.50 697.00 1014.50 873.50 516.50 304.50 42.00 0.00 3938.00
2012 0.00 0.00 a 257.50 127.50 594.50 774.60 e 1032.00 834.13 d 527.50 159.50 h 0.00 z 0.00 z 4147.73
Period of Record Statistics
MEAN 0.25 0.51 23.13 151.27 453.09 740.68 918.08 848.26 584.32 277.68 46.08 2.25 4029.96
S.D. 1.83 1.99 37.19 70.11 98.34 85.87 78.59 82.45 83.16 90.66 35.94 5.79 305.49
SKEW 9.77 4.63 3.48 0.39 0.07 0.26 0.32 0.45 0.19 0.42 1.20 3.29 -0.06
MAX 19.00 13.48 257.50 340.00 669.00 1030.80 1141.00 1139.50 816.50 549.00 166.50 32.50 4725.24
MIN 0.00 0.00 0.00 17.00 241.28 498.00 693.00 688.00 382.50 72.52 0.54 0.00 3207.50
NO YRS 112 112 116 117 113 117 118 118 119 118 111 113 87