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
1908 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 0.00
1909 1.00 0.00 0.00 32.00 290.50 579.50 781.56 e 933.62 a 585.54 b 214.50 112.24 a 2.50 3532.95
1910 0.00 0.00 122.00 94.00 249.00 723.00 896.50 817.00 550.00 380.00 4.50 0.00 3836.00
1911 0.00 0.00 14.50 68.50 407.00 735.00 835.00 787.00 585.00 265.50 31.00 0.50 3729.00
1912 0.00 0.00 0.00 a 101.50 308.00 599.00 742.97 a 702.50 602.22 c 340.50 28.50 i 0.00 3396.69
1913 0.00 0.00 a 5.34 b 93.50 281.50 640.00 749.96 e 863.41 d 587.78 c 318.94 e 70.00 c 6.00 l 3610.43
1914 0.00 l 0.00 b 14.00 64.00 448.00 621.50 897.00 859.00 580.00 443.00 113.65 d 5.00 4045.15
1915 0.00 0.00 1.00 288.62 a 258.00 472.50 737.00 701.00 588.50 303.50 76.00 0.00 3426.12
1916 0.00 0.00 0.00 77.59 a 364.50 480.50 962.50 920.50 498.00 222.00 45.50 0.00 c 3571.09
1917 0.00 0.00 3.10 a 29.50 237.00 475.00 808.50 754.00 495.00 126.50 38.00 0.00 2966.60
1918 0.00 0.00 48.00 45.52 a 373.50 589.50 755.88 a 936.00 484.50 369.50 83.00 2.00 3687.40
1919 0.00 0.00 12.50 98.50 330.00 808.50 980.00 858.50 689.00 315.00 25.00 0.00 4117.00
1920 0.00 z 0.00 z 6.72 a 67.50 185.48 a 669.00 773.00 757.50 675.00 472.00 24.50 0.00 z 3630.70
1921 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
1922 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
1923 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
1924 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
1925 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 0.00
1926 0.00 0.00 11.50 79.00 g 320.00 498.50 733.00 773.50 499.50 190.50 0.00 z 0.00 z 3026.50
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 r 0.00 14.90 e 48.00 365.80 a 514.50 840.00 825.50 521.90 a 308.50 63.21 b 2.50 3504.81
1929 0.00 a 0.00 45.50 126.50 260.50 547.50 800.50 785.00 558.00 357.00 35.00 0.00 3515.50
1930 0.00 a 7.00 20.00 96.50 387.50 d 669.50 815.00 870.07 a 616.00 192.20 a 0.00 z 0.00 z 3673.77
1931 0.00 z 0.00 z 0.00 e 160.50 353.00 726.00 1015.50 882.00 790.00 445.00 155.00 5.00 f 4527.00
1932 3.32 c 9.13 b 6.50 89.50 397.32 a 715.00 948.00 962.55 a 620.00 278.50 31.50 0.00 a 4061.32
1933 0.00 a 0.00 b 0.00 74.00 357.02 a 740.36 b 930.00 a 838.50 780.00 253.50 17.22 c 1.11 c 3991.70
1934 0.00 0.00 2.00 102.00 471.95 b 719.42 d 842.88 b 756.92 a 571.03 a 364.00 81.00 0.00 a 3911.20
1935 0.00 c 0.00 b 16.00 63.00 292.00 545.50 981.00 926.00 570.50 283.50 9.83 a 0.00 d 3687.33
1936 0.00 i 0.00 d 9.62 b 66.50 469.50 377.00 j 1007.50 876.50 703.50 250.00 31.00 12.29 b 3426.41
1937 0.00 e 0.00 d 0.53 b 60.00 b 380.50 644.48 a 918.50 962.00 605.50 265.88 e 36.21 a 0.00 d 3873.61
1938 0.00 t 0.00 e 51.00 173.57 b 300.81 d 628.50 858.38 b 933.00 615.00 428.66 b 87.41 a 0.00 4076.33
1939 0.00 0.00 55.91 c 83.04 b 424.04 c 643.39 b 885.16 c 847.50 660.52 a 266.50 28.89 c 15.50 b 3910.44
1940 0.00 a 0.00 a 3.00 33.50 g 258.00 f 614.00 392.00 n 603.50 h 364.50 m 220.50 i 0.00 z 0.00 h 617.00
1941 0.00 d 0.00 d 0.00 e 193.39 b 447.43 a 681.00 901.50 881.29 c 614.50 352.50 67.00 0.00 z 4138.61
1942 0.00 g 0.00 d 9.54 e 227.31 d 375.10 a 672.00 887.00 867.00 569.00 349.86 c 55.20 e 0.00 f 4012.00
1943 0.00 e 1.17 d 49.94 d 93.46 d 348.75 e 682.20 e 924.26 d 900.79 e 510.00 e 268.50 g 20.77 d 1.19 e 3532.53
1944 19.67 e 0.00 d 0.00 d 45.60 e 393.24 d 690.00 d 720.50 f 921.39 d 631.15 d 338.02 e 104.42 d 0.00 3143.50
1945 0.00 b 0.00 138.50 112.50 284.50 571.50 794.78 b 896.00 592.00 307.50 23.57 b 0.00 b 3720.85
1946 0.00 0.00 c 94.79 e 219.23 d 349.04 d 607.80 e 857.09 d 795.67 a 565.50 383.37 a 85.50 20.00 3977.98
1947 0.00 0.00 6.00 61.50 261.00 484.00 900.55 a 934.50 631.03 a 513.57 a 77.68 b 0.00 b 3869.83
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 672.50 883.00 911.29 b 768.50 280.50 95.00 3.50 3614.29
1949 0.00 0.00 a 13.50 175.34 a 407.00 731.50 993.00 970.50 538.50 377.00 57.00 1.03 a 4264.38
1950 0.00 b 0.00 0.50 42.00 304.50 646.00 761.00 750.50 597.00 368.00 46.03 a 0.00 b 3515.53
1951 0.00 a 0.00 5.00 69.50 443.30 a 571.11 c 863.00 766.00 520.50 290.00 6.00 9.00 3543.41
1952 0.00 a 0.00 1.00 229.00 413.50 679.50 873.00 834.00 583.50 196.69 b 62.50 1.00 3873.69
1953 0.00 0.00 24.00 68.50 337.38 a 694.00 901.50 955.00 599.00 411.50 120.00 5.50 4116.38
1954 0.00 1.50 8.00 192.93 a 293.00 651.21 a 876.78 a 860.80 c 637.00 333.25 a 53.04 b 0.00 3907.51
1955 0.00 0.00 5.00 251.00 463.50 654.00 975.00 1038.50 a 631.07 b 315.74 d 17.00 0.00 b 4350.81
1956 0.00 0.00 1.00 49.50 303.00 673.45 a 765.18 a 838.79 e 486.60 e 375.10 a 101.00 0.00 a 3593.62
1957 0.00 0.00 0.00 a 165.00 322.00 601.55 a 886.50 874.95 b 373.00 k 184.00 i 13.20 e 1.00 f 2863.20
1958 0.00 j 0.00 0.00 162.00 377.00 543.62 a 809.62 a 838.07 b 587.07 a 316.50 97.00 0.00 d 3730.88
1959 0.00 c 0.00 0.00 l 91.20 e 352.00 f 731.00 807.55 a 944.50 612.00 200.00 9.00 0.00 3395.25
1960 0.00 0.00 3.74 b 136.00 269.50 576.50 418.50 n 869.07 b 667.00 258.50 31.00 0.00 d 2811.31
1961 0.00 0.00 f 7.50 59.00 292.36 b 681.11 c 295.50 t 506.50 m 633.50 310.50 24.00 6.50 2014.47
1962 0.00 0.00 0.50 151.50 239.00 k 341.00 m 341.50 r 0.00 z 0.00 z 0.00 z 18.00 31.00 201.00
1963 0.00 a 0.00 38.00 146.00 326.03 b 702.50 899.00 a 802.26 b 587.07 a 566.02 b 100.50 0.00 4167.38
1964 0.00 0.00 z 10.00 128.04 b 521.50 702.00 905.00 780.50 564.50 251.00 162.00 0.00 4024.54
1965 0.00 0.00 0.00 a 57.50 421.50 617.50 0.00 z 812.50 531.00 302.25 a 58.00 4.00 2804.25
1966 0.00 0.00 17.00 71.00 323.95 a 776.00 992.50 862.50 586.67 c 263.50 b 31.00 0.00 3924.12
1967 0.00 0.00 17.00 115.00 264.00 655.50 808.50 744.50 572.50 302.50 23.00 1.00 3503.50
1968 0.00 0.00 62.00 147.50 321.50 636.50 840.00 845.50 658.20 e 209.00 f 40.50 4.00 3555.70
1969 0.00 0.00 3.00 123.00 398.00 500.50 870.67 b 968.50 474.50 i 258.50 35.50 0.00 3157.67
1970 0.00 0.00 0.00 151.00 372.50 683.50 981.50 904.50 605.50 320.00 39.50 g 8.50 4027.00
1971 0.00 0.00 0.00 92.50 340.00 736.50 845.50 803.00 623.40 e 456.50 41.50 f 0.00 3897.40
1972 0.00 0.00 0.00 b 62.50 180.00 l 523.50 766.50 773.00 509.50 191.50 32.00 0.00 2858.50
1973 0.00 0.00 13.50 91.50 288.82 a 689.00 860.00 0.00 z 0.00 z 0.00 z 21.50 4.50 1968.82
1974 0.00 0.00 9.09 b 122.50 274.50 567.50 876.50 783.50 460.00 0.00 z 41.50 i 0.00 3093.59
1975 0.00 0.00 1.07 b 49.00 499.50 649.00 923.00 850.00 492.22 c 249.50 f 141.50 f 9.00 3472.79
1976 0.00 0.00 i 19.67 e 147.41 a 275.12 c 789.23 d 890.00 827.00 546.00 210.91 c 12.00 0.00 3717.35
1977 0.00 0.00 30.00 215.50 530.50 563.50 879.00 740.50 575.50 249.00 120.00 0.00 3903.50
1978 0.00 0.00 1.50 54.00 410.75 e 554.42 d 619.50 g 807.50 700.50 242.50 78.50 0.00 c 2849.67
1979 0.00 a 0.00 0.60 e 62.50 284.00 429.00 j 823.00 758.50 0.00 z 0.00 z 38.50 5.00 1972.10
1980 0.00 c 0.00 a 0.00 140.00 435.15 d 570.00 845.50 855.00 596.50 118.50 g 29.48 a 0.00 b 3471.63
1981 0.00 2.00 31.00 d 116.50 306.00 668.00 842.00 826.50 571.50 169.93 d 50.00 0.00 b 3583.43
1982 0.00 0.00 9.00 76.50 399.50 522.00 813.50 771.00 532.00 302.00 26.00 32.50 3484.00
1983 0.00 0.00 14.00 69.50 222.50 649.00 998.50 978.00 623.00 315.00 67.50 0.00 3937.00
1984 0.00 4.50 0.00 a 71.00 318.50 657.00 840.00 906.48 b 497.00 309.50 26.50 9.50 3639.98
1985 0.00 c 0.00 0.00 z 185.50 497.00 577.00 862.00 800.00 597.50 277.50 37.00 0.00 3833.50
1986 0.00 0.00 64.00 163.00 438.00 566.50 902.00 812.50 635.00 286.00 13.50 0.00 3880.50
1987 0.00 0.00 38.00 203.00 514.00 840.00 b 928.50 863.00 624.64 b 160.50 94.50 1.50 4267.64
1988 0.00 0.00 20.50 105.50 469.00 810.00 a 957.50 928.00 637.50 166.00 32.50 0.50 4127.00
1989 2.00 0.00 16.50 65.00 0.00 z 564.50 855.50 682.50 g 561.00 243.50 18.50 0.00 2326.50
1990 0.00 0.00 37.50 165.00 278.00 634.50 762.00 785.50 649.00 248.00 104.50 1.50 3665.50
1991 0.00 2.00 19.00 184.50 464.00 754.00 897.50 939.50 571.50 239.50 20.50 0.00 4092.00
1992 0.00 0.00 5.00 62.50 397.00 595.50 712.00 739.00 512.00 265.00 16.50 0.00 3304.50
1993 0.00 0.00 6.00 72.00 348.50 587.00 873.50 891.50 457.50 226.50 20.00 0.00 3482.50
1994 0.00 0.00 14.50 164.00 405.50 728.50 860.00 786.50 709.50 338.50 69.00 5.50 i 4076.00
1995 0.00 0.00 j 28.50 55.50 370.50 836.50 989.50 1058.50 613.00 320.00 4.50 i 0.00 4272.00
1996 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
1997 0.00 0.00 6.50 115.00 230.50 731.50 834.50 781.00 620.50 297.00 23.50 0.00 3640.00
1998 2.50 3.00 71.50 150.50 611.50 721.00 912.50 925.00 736.00 322.00 22.50 o 47.50 4503.00
1999 0.00 e 0.00 h 37.00 171.96 b 491.00 725.19 d 1022.47 b 660.50 f 549.44 c 210.59 b 62.00 r 10.00 f 3207.65
2000 0.00 e 1.50 j 29.00 s 61.50 g 163.50 r 691.15 d 811.88 b 851.00 548.65 d 260.00 k 65.50 o 0.00 d 2902.69
2001 0.00 e 0.00 z 0.00 m 73.00 p 473.50 681.00 893.00 934.65 a 564.23 d 241.50 g 63.00 t 15.50 d 3561.88
2002 2.50 0.00 4.00 155.50 251.50 716.00 1037.00 882.50 186.50 t 169.50 0.00 o 2.00 n 3218.50
2003 2.50 0.00 17.50 q 112.50 282.00 548.50 828.50 876.00 567.00 202.00 24.00 0.00 3443.00
2004 0.00 0.00 27.00 131.50 285.50 574.00 776.50 690.00 655.50 289.00 73.50 2.00 3504.50
2005 0.00 0.50 18.50 105.00 308.00 752.00 905.50 917.00 707.00 325.50 65.50 0.00 4104.50
2006 0.00 0.00 11.50 188.50 383.00 659.00 975.00 884.00 542.00 181.50 41.50 4.00 3870.00
2007 7.00 0.00 66.00 122.00 399.50 700.00 833.50 886.50 649.00 411.50 38.50 0.00 4113.50
2008 0.00 0.00 0.00 126.50 289.00 658.00 830.00 836.50 623.00 254.50 74.00 0.00 3691.50
2009 0.00 1.50 9.00 71.50 356.00 591.00 726.50 747.50 608.50 159.50 80.50 0.00 3351.50
2010 0.00 0.00 24.00 190.00 461.50 702.00 931.00 955.50 529.50 322.00 54.50 0.00 4170.00
2011 0.00 0.50 4.00 i 0.00 z 0.00 z 0.00 z 565.00 n 923.00 558.50 289.50 75.50 2.50 1849.50
2012 0.50 0.00 176.50 90.00 507.00 715.50 1017.50 850.50 556.00 156.00 h 0.00 z 0.00 z 3913.50
Period of Record Statistics
MEAN 0.47 0.38 20.11 115.00 362.27 646.96 871.81 854.10 593.58 295.82 52.60 3.18 3795.09
S.D. 2.28 1.38 30.70 55.83 84.34 84.20 77.94 75.96 67.78 83.63 35.23 7.67 290.62
SKEW 7.23 4.71 2.83 0.72 0.41 -0.07 0.11 0.10 0.55 0.59 0.91 3.73 -0.29
MAX 19.67 9.13 176.50 288.62 611.50 840.00 1037.00 1058.50 790.00 566.02 162.00 47.50 4350.81
MIN 0.00 0.00 0.00 29.50 185.48 472.50 712.00 690.00 457.50 126.50 4.50 0.00 2966.60
NO YRS 88 87 90 91 89 93 89 91 90 84 82 86 49