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
1897 0.00 z 0.00 0.00 201.67 c 531.50 0.00 z 1090.37 e 856.67 e 431.00 0.00 z 0.00 z 0.00 3111.21
1898 0.00 c 0.00 i 6.00 125.00 457.00 742.00 899.00 758.00 620.00 127.50 7.50 0.00 3742.00
1899 0.00 0.00 0.00 229.00 456.00 766.00 971.00 869.50 481.50 194.50 30.50 0.00 z 3998.00
1900 0.00 z 0.00 0.00 304.50 583.00 757.00 851.50 0.00 z 553.00 464.50 23.50 0.00 z 3537.00
1901 0.00 z 0.00 z 0.00 z 220.00 521.50 708.00 1000.50 848.00 490.50 276.50 0.00 z 0.00 z 4065.00
1902 0.00 z 0.00 z 0.00 z 109.66 a 528.55 a 317.50 l 917.94 d 744.50 436.15 d 157.87 d 22.50 b 0.00 c 2917.17
1903 0.00 0.00 3.50 f 117.93 a 486.91 b 610.71 b 813.46 d 695.95 a 464.48 a 190.13 a 53.79 a 0.00 a 3433.38
1904 0.00 a 0.00 1.60 b 68.57 b 415.92 a 617.00 760.02 a 693.37 a 472.00 192.00 54.00 0.00 3274.47
1905 0.00 a 0.00 46.50 a 30.50 i 0.00 z 260.50 r 497.50 m 533.50 j 596.79 b 214.62 e 9.00 e 0.00 866.90
1906 0.00 0.00 0.00 b 202.00 380.50 666.50 828.50 835.00 658.97 a 202.07 d 23.50 0.00 3797.04
1907 0.00 f 0.00 4.50 7.50 l 153.50 f 390.00 k 688.50 f 793.48 e 468.10 a 164.00 g 16.50 0.00 b 1282.58
1908 0.00 0.00 0.00 f 205.00 427.59 b 662.00 864.90 a 383.00 q 424.00 m 251.10 a 10.20 e 0.00 a 2420.79
1909 0.00 c 0.00 b 1.50 29.44 c 406.50 721.50 852.50 a 925.00 522.00 206.50 62.00 0.50 3727.44
1910 0.00 0.00 160.00 268.20 e 326.69 e 775.50 0.00 z 767.80 c 527.68 b 340.00 2.50 0.00 3168.37
1911 0.00 b 0.00 e 53.00 175.34 a 524.62 e 828.21 b 817.50 708.50 454.44 c 144.67 d 0.00 b 0.00 c 3706.29
1912 0.00 0.00 a 3.10 a 186.00 438.59 d 473.50 h 0.00 z 0.00 z 0.00 z 0.00 z 0.00 o 0.00 z 627.69
1913 0.00 z 0.00 z 10.00 g 0.00 z 0.00 z 620.50 g 816.33 d 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 816.33
1914 0.00 z 0.00 g 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
1915 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
1916 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 475.00 181.00 37.50 0.00 693.50
1917 0.00 0.00 0.50 37.50 354.00 593.00 922.50 727.00 513.50 61.50 50.50 0.00 3260.00
1918 0.00 0.00 65.00 112.50 510.50 693.00 858.50 853.50 362.50 227.50 57.50 0.00 3740.50
1919 0.00 0.00 8.00 104.50 470.50 826.00 956.50 803.50 610.00 135.00 0.00 0.00 3914.00
1920 0.00 0.00 30.50 60.50 505.00 746.50 832.50 836.00 655.50 394.50 0.00 0.00 4061.00
1921 0.00 1.00 24.50 209.00 535.00 901.50 813.50 g 840.00 595.50 252.00 0.00 0.00 3358.50
1922 0.00 0.00 0.00 98.00 604.50 749.50 815.50 914.00 662.50 324.00 57.00 0.00 4225.00
1923 0.00 0.00 c 0.00 145.00 495.00 845.50 992.00 d 761.10 b 617.00 211.50 32.50 1.00 4100.60
1924 0.00 0.00 0.50 91.50 210.50 613.00 816.50 761.50 422.50 389.00 10.50 0.00 3315.50
1925 0.00 0.00 28.00 253.50 353.50 717.00 661.00 f 906.00 419.50 h 58.50 8.50 0.00 2325.00
1926 0.00 a 0.00 14.95 c 136.20 e 0.00 z 618.50 895.00 805.50 417.50 180.00 2.00 0.00 3069.65
1927 0.00 0.00 f 12.50 140.00 337.00 663.00 794.00 686.50 613.50 251.50 1.00 0.00 3499.00
1928 0.00 0.00 45.50 94.00 577.00 592.00 898.50 849.50 455.50 280.50 29.00 0.00 3821.50
1929 0.00 0.00 13.50 145.50 367.50 673.00 979.71 b 877.50 496.00 244.00 8.50 0.00 b 3805.21
1930 0.00 12.00 13.00 247.00 501.88 b 777.00 384.00 r 976.50 596.50 303.50 82.00 0.00 3509.38
1931 0.00 4.50 0.00 274.44 c 471.50 905.17 a 1023.52 a 854.50 790.50 385.50 89.50 0.00 4799.13
1932 0.00 10.00 3.00 168.00 532.68 a 870.50 1000.00 941.50 575.50 209.00 26.00 2.50 4338.68
1933 0.00 a 0.00 4.00 127.00 509.50 1034.00 1072.60 a 884.50 760.00 213.50 26.50 0.00 4631.60
1934 0.00 a 0.00 10.00 153.00 798.77 a 871.00 1013.50 854.57 a 511.00 394.22 a 41.90 a 0.00 4647.95
1935 0.00 a 0.00 26.00 162.00 417.47 a 650.50 1128.00 927.50 568.45 a 237.50 0.00 0.00 4117.42
1936 0.00 0.00 0.00 95.50 637.50 738.50 1152.88 b 967.50 710.00 220.50 3.50 0.00 4525.88
1937 0.00 a 0.00 a 0.00 129.50 561.50 746.50 1022.50 1066.50 625.50 217.52 a 31.00 0.00 4400.52
1938 0.00 0.00 91.97 a 263.50 433.00 776.00 972.00 1025.00 656.90 a 428.50 50.17 a 0.00 4697.04
1939 0.00 0.00 a 37.00 163.00 642.00 779.50 990.45 a 894.00 622.50 223.72 a 16.00 m 20.48 c 4372.65
1940 0.00 0.00 0.00 131.00 473.00 759.50 1012.00 827.00 709.14 a 384.00 20.00 0.00 4315.64
1941 0.00 0.00 2.50 310.50 665.50 787.50 1009.00 925.00 619.00 291.50 30.58 d 3.50 4644.58
1942 3.50 0.00 0.00 q 274.00 n 422.93 c 737.88 d 908.19 d 870.00 507.78 c 314.81 b 18.62 a 0.00 3783.71
1943 0.00 a 0.00 28.50 141.72 a 393.00 827.00 1022.50 911.50 514.00 273.00 0.00 d 0.00 b 4111.22
1944 0.00 a 0.00 0.00 100.50 616.50 784.50 892.50 882.50 583.50 289.50 70.00 0.00 4219.50
1945 0.00 0.00 141.50 124.50 321.50 575.00 872.00 877.50 510.50 217.50 17.00 0.00 3657.00
1946 0.00 0.00 102.50 237.50 375.50 687.50 942.00 774.50 513.00 267.00 10.50 0.00 3910.00
1947 0.00 0.00 6.00 76.50 347.00 642.00 949.50 1110.50 599.50 509.50 30.00 0.00 4270.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 950.00 910.00 777.00 324.43 b 37.76 a 0.00 2999.19
1949 0.00 0.00 0.00 159.31 a 536.50 803.00 974.50 955.00 495.00 334.00 45.00 0.00 4302.31
1950 0.00 0.00 0.00 46.50 381.50 781.00 891.50 794.63 a 587.00 340.00 19.50 0.00 a 3841.63
1951 0.00 0.00 0.00 b 110.50 600.50 656.50 920.00 778.00 0.00 z 253.17 a 7.50 5.68 a 3331.85
1952 0.00 0.00 0.00 280.00 540.00 829.00 957.00 837.50 635.50 150.35 a 40.50 0.00 4269.85
1953 0.00 0.00 7.50 76.00 483.50 845.50 961.00 968.50 581.50 427.00 61.00 0.00 4411.50
1954 0.00 a 1.00 0.00 175.00 363.50 835.50 946.00 836.50 525.50 192.50 38.00 0.00 3913.50
1955 0.00 0.00 16.00 318.00 622.50 785.00 1075.50 1003.00 551.38 a 280.00 0.00 0.00 4651.38
1956 0.00 0.00 0.00 32.22 c 471.00 849.00 830.69 d 855.00 466.50 397.50 71.00 0.00 a 3972.91
1957 0.00 0.00 0.00 233.00 448.50 703.00 1032.50 854.50 497.00 216.00 18.46 d 0.00 4002.96
1958 0.00 t 4.00 2.50 181.55 a 542.50 595.00 834.42 a 839.00 577.00 265.50 37.50 0.00 3878.97
1959 0.00 0.00 15.00 151.00 556.50 829.50 944.00 955.00 561.00 114.50 2.50 0.00 4129.00
1960 0.00 0.00 6.00 146.50 473.00 667.50 920.50 926.00 596.00 274.50 8.50 0.00 4018.50
1961 0.00 1.00 27.50 54.00 392.00 770.00 874.00 913.00 518.00 258.00 12.00 0.00 b 3819.50
1962 0.00 0.00 0.50 136.50 563.50 713.50 804.00 822.00 458.00 306.26 b 15.50 17.00 3836.76
1963 0.00 0.00 68.00 201.50 406.50 804.00 952.00 816.00 589.00 469.00 40.50 0.00 4346.50
1964 0.00 0.00 4.00 192.50 586.50 747.50 1009.00 791.00 501.50 226.00 85.00 0.00 4143.00
1965 0.00 0.00 0.00 74.50 521.00 709.00 842.00 790.50 318.00 275.50 26.50 0.00 3557.00
1966 0.00 0.00 22.50 58.50 354.50 765.00 1003.50 759.50 517.00 180.83 a 4.50 0.00 3665.83
1967 0.00 0.00 29.00 128.00 328.00 694.00 845.00 746.00 527.50 192.50 12.00 0.00 3502.00
1968 0.00 0.00 92.50 192.00 358.00 705.00 894.50 841.00 548.00 274.00 9.50 0.00 3914.50
1969 0.00 0.00 0.00 176.50 500.00 543.00 892.00 947.00 564.50 159.50 30.50 0.00 3813.00
1970 0.00 0.00 0.00 161.00 453.50 826.00 999.00 903.50 578.00 240.50 1.00 0.00 4162.50
1971 0.00 0.00 1.50 223.00 441.50 878.00 812.50 803.00 591.00 345.50 13.50 0.00 4109.50
1972 0.00 0.00 0.50 101.50 593.50 725.50 843.00 828.00 473.00 166.50 8.89 c 0.00 b 3740.39
1973 0.00 0.00 31.50 116.38 a 418.00 759.50 918.50 953.00 539.50 384.00 17.50 0.00 4137.88
1974 0.00 0.00 0.00 183.00 383.00 695.50 1031.50 774.50 444.50 263.50 30.50 0.00 3806.00
1975 0.00 0.00 0.00 55.00 594.00 751.50 1011.50 867.50 477.50 316.00 95.00 0.00 4168.00
1976 0.00 0.00 13.00 266.50 495.00 817.50 990.00 959.00 593.00 184.00 5.00 0.00 4323.00
1977 0.00 0.00 44.50 389.00 778.50 780.50 1004.50 754.00 573.50 221.50 0.00 z 0.00 z 4546.00
1978 0.00 z 0.00 z 0.00 z 0.00 z 583.83 d 657.50 821.50 b 769.00 622.24 a 199.50 53.50 0.00 3707.07
1979 0.00 0.00 a 0.00 124.29 b 325.50 679.00 875.50 770.50 587.14 b 176.50 17.00 0.00 3555.43
1980 0.00 0.00 0.00 265.00 593.81 b 722.78 c 939.00 850.00 465.50 77.50 w 2.50 n 0.00 3836.09
1981 0.00 7.00 56.50 174.50 437.74 b 706.50 886.50 829.00 505.00 142.50 58.97 a 0.00 3804.21
1982 0.00 0.00 2.00 128.50 588.50 583.00 919.00 817.50 475.00 231.50 12.00 9.50 3766.50
1983 0.00 a 0.00 6.50 97.50 373.00 754.66 a 1018.50 975.00 586.00 241.00 34.66 a 0.00 4086.81
1984 0.00 c 0.50 1.50 236.00 496.00 812.50 940.50 958.00 444.50 308.00 16.03 a 0.00 a 4213.53
1985 0.00 0.00 22.50 294.50 625.17 a 661.03 a 939.50 760.50 531.50 177.50 9.00 0.00 4021.20
1986 0.00 s 0.00 33.50 264.00 552.00 787.00 981.00 773.50 552.00 237.00 14.50 0.00 4194.50
1987 0.00 0.00 87.00 423.00 623.10 a 926.90 a 1069.00 862.50 629.50 131.50 82.50 0.00 4835.00
1988 0.00 0.00 1.50 153.62 a 702.00 950.00 1068.00 943.00 560.50 137.00 7.50 0.00 4523.12
1989 0.00 0.00 8.50 139.50 484.50 776.50 1057.50 877.50 525.00 243.00 0.00 0.00 4112.00
1990 0.00 0.00 18.50 231.50 425.00 838.00 954.00 898.00 601.50 139.00 59.00 0.00 4164.50
1991 0.00 0.00 23.00 228.00 585.50 883.50 921.50 923.50 512.50 176.00 0.50 0.00 4254.00
1992 0.00 0.00 3.00 97.50 616.50 725.50 763.50 759.00 493.50 230.50 0.00 0.00 3689.00
1993 0.00 0.00 22.00 128.50 462.00 697.50 864.00 888.00 390.50 165.50 0.00 0.00 a 3618.00
1994 0.00 1.00 2.00 140.00 523.50 781.00 858.50 773.50 619.00 253.00 18.50 0.00 3970.00
1995 0.00 0.00 22.50 71.38 a 408.00 838.00 909.00 898.00 502.50 186.50 0.00 0.00 3835.88
1996 0.00 0.00 0.00 59.50 391.50 730.34 a 814.50 870.50 573.00 185.50 1.50 0.00 3626.34
1997 0.00 0.00 4.50 128.50 311.00 803.50 872.50 774.00 578.00 248.50 2.00 0.00 3722.50
1998 0.00 a 12.00 32.50 241.50 664.50 672.00 932.50 914.50 702.50 274.50 23.00 7.00 4476.50
1999 0.00 0.00 24.50 142.00 536.00 730.50 1009.00 852.00 522.50 172.50 59.50 0.00 4048.50
2000 0.00 7.00 94.50 143.00 553.00 669.00 0.00 z 0.00 z 208.00 n 284.17 a 53.00 0.00 a 1803.67
2001 0.00 0.00 0.00 a 172.50 536.50 744.50 928.00 930.00 513.50 183.50 134.00 0.00 4142.50
2002 0.00 1.00 0.00 153.50 331.00 794.00 980.00 822.00 601.00 100.50 5.00 0.00 3788.00
2003 0.50 0.00 38.00 200.50 455.50 697.00 888.50 924.00 556.00 257.00 3.00 0.00 4020.00
2004 0.00 0.00 27.50 190.00 359.00 620.50 836.00 664.50 680.00 233.00 28.50 0.00 3639.00
2005 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
2006 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
2007 0.00 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 z 0.00 z 0.00 z 0.00
2008 0.00 z 0.00 0.00 106.00 381.50 708.00 908.00 850.50 564.50 207.00 83.00 0.00 3808.50
2009 0.00 0.00 16.50 151.00 468.50 696.00 770.00 774.50 688.50 76.00 61.50 0.00 3702.50
2010 0.00 0.00 55.00 318.00 509.00 723.00 948.50 948.50 466.50 293.50 48.00 0.00 4310.00
2011 0.00 a 0.00 0.00 91.00 447.00 692.50 839.00 f 879.50 537.41 a 330.67 a 19.50 0.00 2997.58
2012 0.00 0.00 b 220.44 d 188.04 b 565.50 792.50 1073.50 822.50 538.00 176.70 a 20.00 0.00 4397.18
2013 0.00 0.00 0.00 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 z 0.00
Period of Record Statistics
MEAN 0.04 0.60 21.28 164.20 485.97 745.19 930.09 854.06 550.79 244.94 27.66 0.64 4036.45
S.D. 0.35 2.18 36.18 77.22 105.62 87.92 85.39 83.05 83.92 87.91 26.61 2.87 350.50
SKEW 9.63 4.13 2.94 0.72 0.27 0.27 0.17 0.23 0.29 0.59 1.25 5.42 0.14
MAX 3.50 12.00 220.44 423.00 798.77 1034.00 1152.88 1110.50 790.50 509.50 134.00 20.48 4835.00
MIN 0.00 0.00 0.00 29.44 210.50 543.00 760.02 664.50 318.00 58.50 0.00 0.00 3260.00
NO YRS 101 104 103 104 105 103 101 104 105 106 104 105 80