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
1954 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 99.50 0.00 99.50
1955 0.00 0.00 a 35.00 423.50 737.50 812.68 b 1211.07 a 1131.50 a 629.42 d 351.33 a 8.50 0.00 g 5340.50
1956 0.00 0.00 b 1.15 d 118.97 a 625.50 641.00 l 907.00 973.00 643.89 c 565.48 b 64.50 0.00 3899.49
1957 0.00 2.50 20.50 276.00 e 536.82 a 855.60 e 1190.92 a 930.00 c 600.00 a 273.32 a 22.50 b 0.00 4708.15
1958 0.00 a 13.48 a 20.50 233.57 b 673.00 754.00 895.26 b 1014.00 728.04 b 293.00 h 50.00 k 1.50 4333.35
1959 0.00 a 0.00 a 22.73 a 243.62 a 678.38 a 944.48 a 999.00 1075.00 657.50 203.00 13.50 4.00 4841.22
1960 0.00 0.00 4.50 248.00 585.00 786.72 a 986.00 991.00 684.50 354.50 66.00 5.50 4711.72
1961 0.00 0.00 22.50 108.00 471.00 870.50 960.00 966.00 613.50 378.50 25.80 e 6.50 4422.30
1962 0.00 b 0.00 2.50 129.00 l 736.50 844.00 930.50 944.00 571.50 428.00 63.50 46.50 4567.00
1963 0.00 0.00 125.00 280.00 581.00 950.50 1009.00 903.50 745.50 647.00 93.50 0.00 5335.00
1964 0.00 4.00 14.00 264.50 770.00 887.00 1098.00 865.00 686.50 355.00 208.50 0.00 5152.50
1965 0.00 c 0.00 0.00 z 0.00 z 527.00 f 879.00 1017.00 900.50 468.00 e 0.00 z 12.00 l 10.50 3275.00
1966 0.00 z 0.00 z 0.00 z 0.00 z 406.50 m 708.50 h 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1967 0.00 z 0.00 z 0.00 z 143.50 h 356.50 768.00 863.50 769.00 514.66 a 260.00 k 25.20 e 0.00 c 3296.86
1968 0.00 0.00 120.00 218.00 382.00 814.50 916.00 866.50 595.50 354.43 a 44.00 0.00 4310.93
1969 0.00 0.00 0.00 224.00 550.50 616.00 982.00 919.00 609.00 231.50 44.00 0.00 4176.00
1970 0.00 0.00 0.00 237.50 593.50 886.50 987.50 892.00 609.00 266.50 12.50 3.00 4488.00
1971 0.00 0.00 6.00 244.00 437.50 935.50 826.50 844.00 608.50 469.50 46.00 0.00 4417.50
1972 0.00 0.00 23.00 120.00 634.50 753.50 867.00 846.50 553.00 241.00 18.00 0.00 4056.50
1973 0.00 0.00 48.50 168.00 491.50 870.00 966.00 968.00 615.00 444.50 35.00 4.00 4610.50
1974 0.00 0.00 23.00 230.50 464.50 779.00 1079.50 855.50 496.00 345.00 53.00 0.00 4326.00
1975 0.00 a 0.00 a 0.00 88.00 669.50 808.00 1044.50 974.00 511.00 421.50 163.00 1.00 4680.50
1976 0.00 11.00 54.25 a 306.00 518.00 857.50 1021.50 935.50 618.00 218.50 10.00 0.00 4550.25
1977 0.00 z 8.00 85.00 408.50 812.50 846.00 0.00 z 841.00 709.00 226.00 83.50 0.00 4019.50
1978 0.00 0.00 69.00 223.00 675.59 b 874.00 973.50 948.50 836.00 319.00 96.50 0.00 5015.09
1979 0.00 0.00 0.00 162.50 561.88 c 878.50 990.50 898.00 725.50 295.50 30.00 3.62 a 4545.99
1980 0.50 0.00 13.90 b 291.21 a 651.50 902.50 1050.50 946.50 713.50 248.00 82.00 0.00 4900.10
1981 0.00 g 49.26 a 96.00 379.66 a 575.00 914.50 1017.50 876.00 643.00 284.50 146.40 e 0.00 4981.81
1982 0.00 a 0.00 a 28.00 239.50 680.00 734.00 1049.00 922.00 642.50 356.00 29.50 18.00 4698.50
1983 0.00 b 0.00 54.50 136.00 504.00 850.50 1135.50 1133.50 728.00 318.55 b 88.00 0.00 a 4948.55
1984 0.00 0.00 0.00 172.50 580.00 897.50 1016.50 999.50 620.50 393.00 22.22 c 0.00 a 4701.72
1985 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 807.50 968.00 832.50 646.00 287.00 9.31 a 0.00 3550.31
1986 0.00 0.00 103.50 320.00 643.50 953.50 1070.50 816.00 679.50 0.00 z 0.00 z 0.00 z 4586.50
1987 0.00 z 0.00 z 0.00 z 0.00 z 844.50 983.28 a 1114.97 a 879.00 687.00 214.50 103.00 0.00 4826.24
1988 0.00 0.00 59.50 242.50 808.00 1040.50 1062.50 1068.50 741.50 207.50 35.00 0.00 5265.50
1989 4.00 0.00 73.50 275.00 620.00 859.50 1075.00 972.00 629.50 375.00 18.00 0.00 4901.50
1990 0.00 3.50 68.50 282.00 536.00 939.00 970.00 962.00 760.00 298.00 116.00 0.50 4935.50
1991 0.00 0.00 58.00 315.00 711.00 1010.00 1013.50 960.50 645.50 309.50 4.00 0.00 5027.00
1992 0.00 0.00 56.00 182.50 641.00 824.50 798.50 799.50 640.50 312.00 6.50 0.00 4261.00
1993 0.00 0.00 3.00 158.50 567.50 776.50 973.50 947.50 503.50 311.50 24.50 0.00 4266.00
1994 0.00 0.00 53.50 282.00 700.50 924.00 910.50 845.50 742.50 397.00 72.00 0.00 4927.50
1995 0.00 0.00 80.50 141.00 517.00 901.50 1033.00 1087.00 602.00 320.50 1.00 0.00 4683.50
1996 0.00 3.50 27.00 163.00 492.00 901.00 938.50 904.50 605.00 365.00 17.50 0.00 4417.00
1997 0.00 0.00 46.50 211.50 459.00 944.50 1000.50 898.50 720.00 427.50 4.00 0.00 a 4712.00
1998 0.00 20.50 86.50 308.00 788.00 222.50 x 1064.50 0.00 z 796.50 325.50 65.17 a 37.50 3492.17
1999 0.00 0.00 55.00 212.59 a 616.00 839.00 1096.76 b 895.00 598.00 261.50 132.00 6.50 4712.34
2000 0.00 37.00 145.00 243.50 654.00 784.82 b 950.00 922.00 635.00 382.50 49.50 0.00 b 4803.32
2001 0.00 0.00 0.00 269.00 604.50 861.43 b 1073.50 974.50 582.00 280.00 247.50 19.50 4911.93
2002 7.50 0.00 10.50 0.00 z 0.00 z 0.00 z 1096.50 883.50 679.00 159.50 9.00 0.50 2846.00
2003 5.50 0.00 88.50 306.50 496.00 789.50 961.50 990.81 e 606.60 e 338.50 25.50 0.00 4608.91
2004 0.00 l 0.00 77.00 258.50 538.00 595.50 f 894.50 733.50 752.40 e 304.50 63.50 0.00 3621.90
2005 0.00 a 10.00 40.50 h 312.00 477.00 746.50 g 994.00 871.50 526.00 g 346.00 83.50 0.00 b 3094.00
2006 0.00 k 0.00 y 0.00 z 372.50 582.50 843.50 1054.00 943.50 434.50 f 235.00 52.50 0.00 4083.50
2007 0.00 a 0.00 e 128.17 e 253.50 743.50 723.00 f 1002.00 754.00 f 460.00 i 420.00 30.00 0.00 c 2577.17
2008 0.00 a 0.00 i 0.50 126.00 362.50 g 813.50 976.00 703.00 f 644.50 261.00 93.00 0.00 c 2914.50
2009 0.00 e 0.00 m 51.50 173.00 430.50 g 568.50 h 0.00 z 0.00 z 493.50 g 113.50 96.50 0.00 b 434.50
2010 0.00 e 0.00 m 32.00 f 361.00 574.00 839.40 e 799.00 f 558.00 m 488.00 f 374.50 61.20 e 0.00 2210.10
2011 0.00 i 0.00 c 8.00 m 162.32 b 520.59 b 782.88 d 1107.22 a 753.00 f 424.50 h 352.76 b 21.50 g 0.00 c 2925.77
2012 1.50 n 0.00 b 299.87 e 292.80 e 704.98 b 928.20 e 1120.65 a 746.00 g 492.50 g 245.79 c 43.50 j 3.44 d 3595.73
2013 0.00 m 0.00 b 4.50 f 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 0.36 3.19 50.24 240.57 603.31 858.36 1005.76 926.32 645.45 324.80 58.76 3.07 4686.57
S.D. 1.43 9.18 53.76 78.43 111.11 77.06 84.78 83.86 78.38 93.75 51.83 8.57 304.83
SKEW 3.99 3.72 2.22 0.17 0.10 -0.26 -0.05 0.39 0.01 0.77 1.53 3.78 0.02
MAX 7.50 49.26 299.87 423.50 844.50 1040.50 1211.07 1133.50 836.00 647.00 247.50 46.50 5335.00
MIN 0.00 0.00 0.00 88.00 356.50 616.00 798.50 733.50 468.00 113.50 1.00 0.00 4056.50
NO YRS 48 51 49 51 52 50 54 50 50 53 53 56 35