date! ,

Monthly Total Growing Degree Days

(a vali)

Base Temperature = 40 F

File last updated on Apr 4, 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
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 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
1929 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
1930 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
1931 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
1932 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
1933 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
1934 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 832.50 389.00 289.69 b 23.00 0.00 1534.19
1935 0.00 0.00 a 0.00 90.50 380.00 592.00 1042.00 799.50 422.50 196.00 0.00 0.00 3522.50
1936 0.00 a 0.00 0.00 a 78.00 600.50 693.00 1071.05 a 704.50 405.00 a 120.38 a 5.50 k 0.00 3672.43
1937 0.00 0.00 b 0.00 20.50 549.50 495.00 m 918.63 a 858.00 542.00 123.00 0.00 z 0.00 z 3011.63
1938 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 673.00 0.00 z 0.00 z 0.00 z 0.00 z 7.22 c 0.00 680.22
1939 0.00 0.00 20.50 f 118.00 g 541.98 a 618.10 a 1019.50 932.50 532.24 a 109.53 a 27.00 e 14.43 b 3795.29
1940 0.00 b 0.00 b 0.00 a 72.41 a 467.58 a 650.69 a 936.50 880.50 674.46 b 323.43 a 2.50 0.00 a 4008.08
1941 0.00 a 0.00 0.00 e 156.50 545.08 a 779.50 1005.00 861.00 482.50 194.00 6.21 a 5.50 4035.29
1942 0.00 0.00 a 0.00 a 202.24 a 346.00 633.50 859.00 814.00 444.00 340.50 2.50 0.00 3641.74
1943 0.00 a 0.00 5.00 162.00 346.00 632.00 1020.00 883.00 452.00 295.50 0.00 0.00 a 3795.50
1944 0.00 0.00 0.00 153.00 558.57 d 688.00 907.50 824.50 517.50 231.50 0.50 0.00 3881.07
1945 0.00 0.00 75.00 24.50 203.50 580.00 843.50 716.50 330.00 138.50 0.00 0.00 a 2911.50
1946 0.00 0.00 44.50 0.00 z 407.50 699.50 929.50 800.50 474.50 124.50 15.50 0.00 a 3496.00
1947 0.00 0.00 0.50 81.50 291.50 556.50 836.50 837.50 395.50 273.00 21.00 0.00 3293.50
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 855.50 911.00 725.50 256.00 14.00 0.00 2762.00
1949 0.00 0.00 0.00 236.50 526.50 756.00 913.98 a 949.00 480.00 194.30 c 28.45 a 0.00 a 4084.74
1950 0.00 0.00 a 0.00 23.50 360.63 a 708.62 a 844.00 727.98 a 527.22 c 206.67 a 7.00 0.00 b 3405.63
1951 0.00 a 0.00 0.00 e 31.50 m 571.95 a 623.28 a 867.48 a 752.02 b 421.03 a 181.72 b 0.00 c 0.00 z 3417.49
1952 0.00 z 0.00 z 0.00 z 284.50 r 501.50 799.66 a 905.72 a 856.50 627.00 174.00 28.45 a 0.00 3892.82
1953 0.00 0.00 4.98 c 70.00 436.00 715.34 a 866.00 920.70 a 508.00 385.50 45.00 b 0.00 3951.53
1954 0.00 0.00 a 0.00 b 86.90 a 331.00 703.00 923.80 a 791.50 473.28 a 197.37 a 14.00 0.00 a 3520.84
1955 0.00 0.00 b 2.50 279.00 563.68 a 739.66 a 1001.00 982.00 501.00 224.23 a 5.50 0.00 4298.57
1956 0.00 a 0.00 0.00 8.79 a 388.57 b 868.97 a 814.00 835.00 404.00 305.00 14.48 a 0.00 a 3638.81
1957 0.00 z 0.00 a 7.00 176.79 b 491.00 613.50 1011.50 839.00 443.50 217.52 a 4.29 b 0.00 b 3804.09
1958 0.00 16.00 10.16 b 181.50 554.50 603.62 a 821.50 829.50 531.50 220.50 26.00 0.00 3794.78
1959 0.00 0.00 a 0.00 114.50 400.50 780.50 938.00 930.50 499.00 65.50 0.00 0.00 3728.50
1960 0.00 0.00 0.00 96.72 a 495.50 706.55 a 974.50 956.50 630.50 245.50 0.00 0.00 4105.78
1961 0.00 0.00 a 6.00 59.00 448.50 880.20 e 900.50 1019.00 444.00 232.50 b 10.00 0.00 3999.70
1962 0.00 0.00 0.00 94.50 410.00 784.00 843.00 877.00 464.50 354.43 a 4.00 0.00 3831.43
1963 0.00 0.00 52.50 139.50 406.50 861.00 988.50 899.00 651.50 508.00 23.00 0.00 4529.50
1964 0.00 0.00 0.00 146.00 568.00 636.00 946.50 715.50 440.50 211.50 45.50 0.00 3709.50
1965 0.00 a 0.00 a 0.00 78.00 435.00 711.50 838.00 816.00 253.00 256.00 21.50 0.00 3409.00
1966 0.00 0.00 14.00 52.00 364.00 722.50 958.00 801.00 568.50 167.50 0.00 0.00 3647.50
1967 0.00 0.00 15.00 57.00 340.50 713.00 877.00 839.50 637.50 173.50 12.00 0.00 3665.00
1968 0.00 0.00 44.50 162.50 361.00 684.50 836.00 720.50 539.00 167.50 7.50 0.00 a 3523.00
1969 0.00 0.00 0.00 181.00 476.50 501.50 837.50 992.00 544.00 67.00 7.50 4.00 3611.00
1970 0.00 0.00 0.00 44.50 355.50 847.50 957.50 860.00 547.50 210.50 3.50 0.00 a 3826.50
1971 0.00 0.00 0.00 136.50 445.00 776.00 754.50 874.00 524.00 253.00 0.00 0.00 3763.00
1972 0.00 0.00 1.50 112.76 a 630.00 778.00 802.00 902.50 434.00 163.00 0.00 0.00 3823.76
1973 0.00 0.00 16.53 a 107.00 477.50 776.00 842.00 937.00 497.00 322.00 0.00 0.00 3975.03
1974 0.00 c 0.00 0.00 111.00 335.00 761.50 1022.00 725.40 a 413.00 222.00 5.50 0.00 3595.40
1975 0.00 0.00 1.50 58.00 483.00 716.50 587.50 l 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1259.00
1976 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 488.50 n 894.50 612.50 180.00 11.00 0.00 1698.00
1977 0.00 0.00 a 25.00 326.50 813.50 193.50 w 850.50 610.50 442.50 199.00 43.50 0.00 3311.00
1978 0.00 0.00 a 0.50 103.50 569.00 672.50 833.50 759.50 580.00 175.00 35.00 0.00 3728.50
1979 0.00 0.00 0.00 12.50 239.50 664.50 905.00 675.50 499.50 116.50 0.50 0.00 3113.50
1980 0.00 0.00 0.00 257.50 641.50 682.00 865.50 674.00 377.50 128.00 12.50 0.00 a 3638.50
1981 0.00 1.00 13.00 142.50 393.00 636.00 858.00 862.50 456.50 161.00 77.50 0.00 3601.00
1982 0.00 0.00 2.50 127.00 468.00 496.50 838.50 708.00 447.50 129.50 2.00 0.00 3219.50
1983 0.00 0.00 0.00 82.50 289.00 672.00 953.00 987.00 465.50 111.00 23.00 0.00 3583.00
1984 0.00 2.00 0.00 156.00 339.50 694.50 848.00 918.50 366.00 224.50 2.50 0.00 3551.50
1985 0.00 0.00 7.00 208.50 516.50 486.21 a 784.00 635.50 324.00 116.00 0.00 0.00 a 3077.71
1986 0.00 b 0.00 37.50 103.00 518.50 700.00 856.00 714.00 383.00 153.50 1.00 0.00 3466.50
1987 0.00 0.00 0.00 301.00 554.50 784.50 848.50 724.50 523.50 92.00 30.50 0.00 3859.00
1988 0.00 0.00 4.00 138.00 565.00 938.50 943.50 900.50 445.00 164.50 0.00 0.00 4099.00
1989 0.00 0.00 0.00 74.00 533.50 658.00 1002.00 859.00 483.50 180.00 0.00 0.00 3790.00
1990 0.00 0.00 6.50 169.50 370.50 709.00 806.00 841.50 533.50 110.00 20.50 0.00 3567.00
1991 0.00 6.50 9.50 189.00 578.00 795.00 832.00 904.00 440.00 97.00 0.00 0.00 3851.00
1992 0.00 0.00 0.00 76.50 491.00 592.00 625.00 688.00 362.00 176.50 0.00 0.00 3011.00
1993 0.00 0.00 1.00 81.50 417.50 590.00 709.50 753.50 334.00 103.00 0.00 0.00 2990.00
1994 0.00 0.00 3.00 107.50 478.00 713.00 757.00 726.50 555.50 226.50 2.50 0.00 3569.50
1995 0.00 0.00 0.00 23.50 343.50 857.50 812.00 816.00 453.50 103.00 0.00 a 0.00 3409.00
1996 0.00 0.00 0.00 11.00 326.50 733.00 792.00 821.50 467.50 143.00 0.00 0.00 3294.50
1997 0.00 0.00 0.00 45.00 0.00 z 794.00 0.00 z 763.00 539.50 186.00 0.00 z 0.00 2327.50
1998 0.00 0.00 10.00 177.00 485.50 560.00 811.50 832.00 565.00 113.00 0.00 0.00 3554.00
1999 0.00 0.00 4.50 140.50 419.00 607.50 798.50 709.50 380.50 76.00 47.50 0.50 3184.00
2000 0.00 0.00 29.50 115.50 413.50 542.50 817.00 768.00 375.50 165.00 18.00 0.00 3244.50
2001 0.00 0.00 0.00 112.00 460.00 630.00 805.50 813.00 443.00 101.50 36.50 0.00 3401.50
2002 0.00 0.00 0.00 93.50 248.50 720.00 893.00 744.50 495.00 39.50 0.00 0.00 3234.00
2003 1.00 0.00 14.00 149.00 442.00 673.50 858.00 908.50 495.00 243.00 0.00 0.00 3784.00
2004 0.00 0.00 0.00 77.00 257.50 563.50 780.00 574.50 542.00 159.00 13.00 0.00 2966.50
2005 0.00 0.00 0.00 198.00 353.00 711.00 853.00 769.50 573.00 183.00 22.00 0.00 3662.50
2006 0.00 0.00 0.00 268.50 461.50 778.50 968.50 823.50 495.00 131.50 2.00 0.00 3929.00
2007 0.00 0.00 z 4.50 181.00 446.50 731.50 923.50 720.00 482.00 196.00 9.00 0.00 3694.00
2008 0.00 0.00 0.00 68.50 307.50 637.00 803.00 807.50 494.00 170.50 29.50 0.00 3317.50
2009 0.00 0.00 0.00 63.50 280.50 637.50 0.00 z 0.00 z 0.00 z 55.50 24.00 0.00 1061.00
2010 0.00 0.00 26.50 267.00 448.00 657.50 891.00 863.00 393.50 279.50 30.50 0.00 3856.50
2011 0.00 0.00 0.00 90.50 358.00 645.50 923.80 a 863.02 c 549.00 272.00 16.50 0.00 3718.32
2012 1.50 0.00 99.50 161.50 464.00 727.24 a 984.00 820.50 473.50 114.00 0.00 0.00 3845.74
2013 0.00 0.00 0.00 a 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 0.03 0.34 8.10 123.29 441.70 692.64 881.62 819.19 482.09 188.52 12.57 0.32 3629.29
S.D. 0.21 2.01 17.62 72.24 108.76 92.19 83.17 92.90 85.64 82.27 15.28 1.81 331.31
SKEW 6.19 6.93 3.21 0.71 0.34 0.12 -0.02 -0.23 0.20 0.98 1.60 6.73 -0.08
MAX 1.50 16.00 99.50 326.50 813.50 938.50 1071.05 1019.00 725.50 508.00 77.50 14.43 4529.50
MIN 0.00 0.00 0.00 8.79 203.50 486.21 625.00 574.50 253.00 39.50 0.00 0.00 2911.50
NO YRS 74 74 74 71 74 74 73 76 76 77 75 76 63