date! ,

Monthly Total Growing Degree Days

(a vali)

Base Temperature = 40 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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 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 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
1897 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 94.00 z 672.00 243.50 0.56 c 0.00 916.06
1898 0.00 0.00 2.00 98.50 340.00 653.00 812.00 700.00 521.50 72.00 7.50 0.00 3206.50
1899 0.00 0.00 0.00 131.50 310.50 651.00 848.50 787.00 415.50 192.50 31.50 0.00 3368.00
1900 0.00 0.00 j 0.00 y 271.00 487.50 717.00 758.50 977.00 530.50 434.50 19.50 0.00 4195.50
1901 0.00 0.00 0.00 154.00 522.00 684.50 960.50 842.50 472.00 225.50 1.50 0.00 3862.50
1902 0.00 1.00 15.00 70.00 471.50 584.50 860.50 723.00 386.50 139.50 11.50 0.00 3263.00
1903 0.00 0.00 2.00 98.50 478.00 630.50 776.00 629.00 404.50 197.50 48.00 0.00 3264.00
1904 0.00 0.00 0.00 u 52.50 d 373.50 619.50 740.00 708.00 404.50 160.50 58.00 0.00 3116.50
1905 0.00 0.00 30.50 89.00 292.50 596.00 831.50 846.50 610.50 180.83 d 12.00 0.00 3489.33
1906 0.00 0.00 0.50 203.00 381.50 697.00 851.00 843.00 693.50 239.00 12.86 b 0.00 3921.36
1907 0.00 0.00 6.50 6.00 158.50 701.00 828.50 761.00 445.00 184.50 9.83 a 0.00 3100.83
1908 0.00 0.00 4.00 200.00 376.00 661.50 852.50 726.00 674.50 266.00 16.00 0.00 3776.50
1909 0.00 0.00 0.00 17.00 335.50 720.50 866.85 d 859.50 493.00 183.50 41.50 0.50 3517.85
1910 0.00 z 0.00 0.00 z 0.00 z 314.00 798.50 856.00 710.00 487.00 302.50 0.00 0.00 3468.00
1911 0.00 0.00 5.00 120.50 439.00 728.50 741.00 635.00 431.50 165.85 a 0.00 0.00 a 3266.35
1912 0.00 0.00 0.00 a 113.00 391.12 a 619.50 805.48 a 634.50 484.00 223.00 8.00 0.00 a 3278.60
1913 0.00 0.00 0.00 190.50 263.00 727.50 754.50 792.00 480.00 178.50 25.50 0.00 3411.50
1914 0.00 0.00 1.00 93.50 496.50 628.50 929.00 729.50 542.00 346.00 17.50 0.00 3783.50
1915 0.00 0.00 0.00 311.50 268.50 505.50 688.50 691.50 496.50 210.50 11.50 0.00 3184.00
1916 0.00 0.00 0.50 76.50 338.50 536.00 1031.50 799.00 312.00 135.50 4.00 0.00 a 3233.50
1917 0.00 0.00 0.00 8.50 209.50 460.50 851.00 632.50 456.50 44.50 20.00 0.00 2683.00
1918 0.00 0.50 41.50 101.50 441.00 695.00 835.50 829.50 293.50 188.00 22.00 0.00 3448.00
1919 0.00 0.00 4.50 83.50 443.50 785.50 902.00 732.50 517.00 114.00 1.00 0.00 3583.50
1920 0.00 0.00 13.50 16.50 405.50 660.50 784.00 765.00 576.50 300.00 0.00 0.00 3521.50
1921 0.00 0.00 3.50 124.50 455.50 810.00 1053.00 840.50 528.50 197.50 1.00 0.00 4014.00
1922 0.00 0.00 0.50 83.00 621.00 750.00 800.00 867.50 601.50 295.50 24.00 0.00 4043.00
1923 0.00 0.00 0.00 156.50 469.00 835.50 948.50 689.00 537.50 244.50 28.50 0.00 3909.00
1924 0.00 0.00 1.00 81.50 193.50 549.50 785.50 685.50 386.50 360.00 12.50 0.00 a 3055.50
1925 0.00 1.00 31.50 242.50 382.50 619.00 800.00 851.00 531.50 26.50 8.00 0.00 3493.50
1926 0.00 0.00 2.58 a 138.50 483.00 541.50 824.50 736.00 361.00 137.50 0.00 0.00 3224.58
1927 0.00 0.00 6.50 87.50 221.00 602.50 724.50 605.00 555.00 220.00 0.50 0.00 3022.50
1928 0.00 0.00 19.50 47.50 496.50 538.00 804.00 771.00 401.00 234.50 26.50 0.00 3338.50
1929 0.00 0.00 16.50 105.50 337.50 616.00 897.50 787.00 425.50 201.50 4.00 0.00 3391.00
1930 0.00 1.00 0.00 127.50 405.50 709.00 890.00 855.50 511.61 b 242.00 47.00 0.00 3789.11
1931 0.00 0.00 0.00 166.50 383.00 778.50 916.00 748.50 649.50 326.00 61.50 0.00 4029.50
1932 0.00 1.50 0.00 94.50 452.50 777.00 871.50 807.00 419.50 116.50 10.00 0.00 a 3550.00
1933 0.00 0.00 0.00 86.00 415.50 881.50 898.00 738.50 587.00 121.50 11.00 0.00 3739.00
1934 0.00 0.00 0.00 80.77 d 578.50 684.31 a 789.50 619.50 341.00 260.50 12.00 0.00 3366.08
1935 0.00 0.00 1.00 66.50 284.00 528.00 974.50 762.50 418.50 158.50 0.00 0.00 3193.50
1936 0.00 0.00 0.00 16.50 520.00 600.50 988.00 773.00 548.50 130.00 2.00 0.00 3578.50
1937 0.00 0.00 0.00 34.50 430.00 618.50 848.50 897.00 480.00 123.00 8.00 0.00 3439.50
1938 0.00 0.00 42.50 148.50 341.50 676.50 787.00 855.50 438.00 274.00 35.00 0.00 3598.50
1939 0.00 a 0.00 4.00 107.50 537.50 691.00 884.50 794.00 541.00 179.00 3.00 8.50 3750.00
1940 0.00 0.00 0.00 62.50 350.00 616.50 832.00 736.50 590.50 277.50 6.50 0.00 3472.00
1941 0.00 0.00 0.00 225.00 564.00 714.50 921.00 775.50 538.00 246.50 8.00 8.00 4000.50
1942 0.00 0.00 0.00 283.50 350.00 640.50 782.00 797.00 434.00 294.50 11.50 0.00 3593.00
1943 0.00 0.00 4.00 110.00 355.50 710.50 951.00 832.00 427.00 233.50 0.00 0.00 3623.50
1944 0.00 0.00 0.00 73.00 507.00 710.50 846.00 823.50 503.00 253.00 48.00 0.00 3764.00
1945 0.00 0.00 83.00 77.00 277.50 536.50 803.50 820.50 446.00 152.50 0.00 0.00 3196.50
1946 0.00 0.00 77.00 184.00 346.50 661.50 863.00 726.50 465.00 194.00 7.50 0.00 3525.00
1947 0.00 0.00 0.00 54.00 286.50 599.00 897.50 957.00 471.00 442.00 25.50 0.00 3732.50
1948 0.00 0.00 5.00 190.00 425.50 631.00 854.50 816.00 627.00 230.00 25.50 0.00 3804.50
1949 0.00 0.00 0.00 176.50 475.00 771.00 868.00 872.65 a 420.00 256.27 a 21.00 0.00 3860.42
1950 0.00 0.00 0.00 22.24 a 313.00 676.50 775.50 673.00 512.07 a 265.57 a 14.00 0.00 3251.88
1951 0.00 0.00 0.00 74.00 531.13 a 601.55 a 813.00 674.00 384.00 192.50 7.00 5.17 a 3282.35
1952 0.00 c 0.00 0.00 247.50 431.00 744.50 841.50 724.37 a 527.00 122.50 18.50 0.00 3656.87
1953 0.00 0.00 a 2.00 48.50 414.50 743.00 844.50 879.62 c 512.00 405.00 59.00 0.00 a 3908.12
1954 0.00 0.00 0.00 98.50 306.90 a 719.50 840.00 736.00 458.00 166.00 27.86 b 0.00 3352.76
1955 0.00 0.00 6.00 240.00 a 547.00 707.00 982.00 923.50 492.00 255.75 a 0.00 0.00 c 4153.25
1956 0.00 0.00 0.00 21.72 a 363.00 769.00 722.82 a 743.50 403.50 384.83 b 67.50 0.00 3475.87
1957 0.00 0.00 0.00 185.00 413.00 642.00 939.00 775.50 433.00 191.17 d 12.86 b 0.00 a 3591.52
1958 0.00 3.50 1.00 142.00 442.27 a 486.00 764.50 788.50 525.52 a 210.05 b 35.50 0.00 3398.84
1959 0.00 0.00 3.00 96.00 463.00 707.50 871.50 869.00 493.50 99.50 0.00 0.00 a 3603.00
1960 0.00 0.00 0.00 131.00 429.50 623.00 849.50 525.50 l 500.17 a 229.92 a 2.00 0.00 2765.09
1961 0.00 2.50 19.50 37.00 388.00 759.50 852.50 927.50 503.00 262.00 8.00 0.00 3759.50
1962 0.00 0.00 0.00 105.50 483.50 664.50 756.00 806.00 429.00 297.50 6.00 14.50 3562.50
1963 0.00 0.00 48.50 154.50 394.50 756.50 914.00 775.00 564.00 527.50 20.50 0.00 4155.00
1964 0.00 0.00 2.50 144.50 569.00 683.00 955.00 692.50 473.50 219.50 74.50 0.00 3814.00
1965 0.00 0.00 0.00 73.50 485.50 657.00 795.50 767.50 288.62 a 259.00 35.50 0.00 3362.12
1966 0.00 0.00 8.00 50.50 348.00 751.00 991.50 747.50 508.50 194.00 4.00 0.00 3603.00
1967 0.00 0.00 27.00 104.50 293.50 670.50 830.00 758.50 559.00 182.00 8.00 0.00 a 3433.00
1968 0.00 0.00 78.50 164.00 360.00 668.50 826.67 a 782.00 531.00 272.50 10.00 0.00 3693.17
1969 0.00 0.00 0.50 140.00 458.00 505.50 846.00 925.00 540.50 141.50 40.50 0.00 3597.50
1970 0.00 0.00 0.00 108.50 348.00 754.14 a 946.50 855.00 519.00 225.50 2.00 0.00 3758.64
1971 0.00 0.00 0.00 155.00 374.00 794.00 728.50 756.50 550.50 311.00 4.50 0.00 3674.00
1972 0.00 0.00 1.50 70.50 587.00 704.50 790.00 800.50 429.50 170.50 1.50 0.00 3555.50
1973 0.00 0.00 17.00 119.00 379.00 717.50 848.50 926.00 517.00 373.50 10.50 0.00 a 3908.00
1974 0.00 0.00 a 0.00 137.00 344.00 718.00 997.50 734.50 403.00 243.50 25.00 0.00 3602.50
1975 0.00 0.00 1.50 35.00 567.00 714.00 1001.00 824.00 439.50 316.00 85.00 0.00 3983.00
1976 0.00 a 2.50 12.83 b 227.00 479.00 813.50 911.00 867.00 546.00 167.00 9.50 0.00 4035.33
1977 0.00 0.00 33.50 292.00 713.50 708.50 892.50 612.00 475.00 197.50 56.50 0.00 3981.00
1978 0.00 0.00 25.50 100.50 564.00 707.00 847.00 828.50 646.00 256.50 73.00 0.00 4048.00
1979 0.00 0.00 0.00 80.17 a 306.50 631.50 887.50 752.00 585.00 163.78 a 15.50 0.00 3421.96
1980 0.00 0.00 0.00 232.00 605.50 702.93 a 933.10 a 803.00 439.00 128.00 24.50 0.00 3868.03
1981 0.00 8.00 29.50 167.50 428.50 656.50 850.00 814.50 464.00 184.00 68.00 0.00 3670.50
1982 0.00 0.00 0.00 122.00 516.50 515.50 818.00 674.50 463.50 216.50 3.50 2.00 3332.00
1983 0.00 0.00 0.00 61.00 340.50 703.50 1012.50 1003.00 596.00 229.00 29.50 0.00 3975.00
1984 0.00 0.00 0.00 151.50 410.00 753.50 890.00 966.50 409.00 303.00 16.50 0.00 3900.00
1985 0.00 0.50 15.00 239.50 586.00 600.50 863.50 703.00 490.00 209.50 5.50 0.00 3713.00
1986 0.00 0.00 50.00 195.50 513.00 736.50 910.00 748.50 498.00 246.00 4.50 0.00 3902.00
1987 0.00 0.00 64.00 341.50 541.50 841.50 963.00 812.00 582.00 121.50 47.00 0.00 4314.00
1988 0.00 0.00 b 1.00 146.50 638.00 853.00 1008.50 882.50 546.21 a 150.00 6.00 0.00 4231.71
1989 0.00 0.00 8.50 93.50 504.50 701.00 978.50 852.50 563.00 270.50 0.00 0.00 3972.00
1990 0.00 0.00 16.00 193.50 391.00 763.50 844.00 815.50 543.00 122.00 37.50 o 0.00 j 3688.50
1991 0.00 a 0.00 b 7.00 n 199.50 561.00 800.00 841.00 908.00 475.50 86.50 n 0.00 n 0.00 k 3785.00
1992 0.00 a 0.00 l 0.00 z 28.50 m 526.00 607.50 653.00 462.00 l 268.50 k 90.00 p 0.00 p 0.00 m 1786.50
1993 0.00 m 0.00 o 8.50 m 70.50 385.00 587.00 794.00 841.50 333.50 73.50 k 0.00 m 0.00 l 3011.50
1994 0.00 p 0.00 a 2.58 a 116.50 535.50 745.00 808.00 735.73 a 579.00 156.50 l 16.50 l 0.00 m 3522.32
1995 0.00 b 0.00 m 9.00 i 5.50 n 418.50 869.00 838.50 876.50 507.00 133.50 l 0.00 q 0.00 p 3509.50
1996 0.00 b 0.00 a 0.00 k 39.00 365.00 740.50 809.00 862.00 550.50 184.50 0.00 o 0.00 z 3550.50
1997 0.00 p 0.00 l 3.50 l 114.00 269.50 785.00 820.00 735.00 591.00 135.00 k 0.00 o 0.00 j 3314.50
1998 0.00 l 2.50 i 16.00 i 172.76 a 625.50 651.00 875.00 877.50 650.00 109.00 l 0.00 m 2.00 l 3851.76
1999 0.00 m 0.00 j 15.00 h 126.50 h 426.00 f 710.00 762.00 f 603.50 h 528.21 b 72.50 l 43.50 k 0.00 j 1238.21
2000 0.00 k 0.00 k 39.50 n 93.00 j 473.55 b 580.00 864.90 a 840.62 a 474.81 d 213.50 k 37.00 k 0.00 n 3233.88
2001 0.00 j 0.00 j 0.00 i 114.50 k 109.50 y 739.00 900.50 946.03 b 400.00 g 168.00 i 86.50 p 0.00 o 2585.53
2002 0.00 k 0.00 0.00 k 116.00 303.00 782.50 979.00 813.50 627.50 73.00 4.00 o 0.00 z 3694.50
2003 0.00 l 0.00 z 17.50 j 89.00 k 342.50 f 690.50 888.00 942.00 528.00 167.50 i 1.50 m 0.00 j 3048.50
2004 0.00 l 0.00 j 6.50 i 78.00 h 323.12 e 590.00 806.50 618.50 637.50 141.50 k 21.00 k 0.00 n 2975.62
2005 0.00 l 0.00 k 14.50 h 140.00 n 356.00 778.00 919.50 830.00 602.40 e 165.00 k 28.00 n 0.00 m 3485.90
2006 0.00 o 0.00 i 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 77.50 j 14.00 m 0.00 k 0.00
2007 0.00 k 0.00 i 29.00 i 105.00 m 536.50 825.00 935.50 808.50 528.10 a 181.00 i 6.50 m 0.00 l 3633.60
2008 0.00 k 0.00 i 0.00 k 63.50 i 263.00 f 645.50 859.00 827.00 395.50 g 189.50 72.00 j 0.00 d 2521.00
2009 0.00 a 0.00 h 0.00 i 84.50 j 0.00 z 636.50 0.00 z 735.50 539.50 g 56.50 h 24.00 p 0.00 k 1372.00
2010 0.00 m 0.00 i 37.00 i 198.00 h 493.02 e 637.50 922.50 902.00 392.50 179.00 k 38.00 j 0.00 k 3347.52
2011 0.00 r 0.00 l 0.00 h 69.50 g 403.60 e 646.55 a 1002.16 b 708.50 f 540.60 e 189.50 l 7.78 c 0.00 l 2600.68
2012 0.00 k 0.00 j 87.00 j 71.00 l 520.91 c 794.48 a 1047.00 842.50 493.45 a 159.77 e 4.62 d 0.00 n 3862.73
2013 0.00 o 0.00 o 0.00 q 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
Period of Record Statistics
MEAN 0.00 0.23 9.88 124.40 423.39 683.57 863.96 792.15 498.79 218.83 18.73 0.41 3610.92
S.D. 0.00 0.97 18.46 71.53 105.67 86.94 79.39 86.45 82.38 84.94 20.17 1.97 309.15
SKEW 0.00 6.14 2.42 0.73 0.08 -0.18 0.18 -0.02 -0.09 0.75 1.42 5.46 -0.12
MAX 0.00 8.00 83.00 341.50 713.50 881.50 1053.00 1003.00 693.50 527.50 85.00 14.50 4314.00
MIN 0.00 0.00 0.00 6.00 158.50 460.50 653.00 605.00 288.62 26.50 0.00 0.00 2683.00
NO YRS 97 96 91 99 109 114 112 110 111 98 95 94 88