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
1940 0.00 0.00 2.00 124.00 480.00 810.00 1050.38 a 858.50 715.50 376.50 34.50 0.00 4451.38
1941 0.00 0.00 7.50 355.50 662.50 835.50 1017.50 975.50 679.50 344.50 60.00 a 12.29 b 4950.29
1942 0.00 0.00 a 27.50 372.50 476.50 770.89 b 936.50 909.16 b 541.61 b 340.00 51.43 b 0.00 a 4426.08
1943 0.00 b 0.00 a 47.00 152.50 450.50 888.75 b 1046.77 a 956.87 a 513.10 a 281.00 0.00 0.00 b 4336.49
1944 12.92 a 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 12.92
1945 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
1946 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
1947 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
1948 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
1949 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1048.00 548.50 452.50 75.00 0.00 2124.00
1950 0.00 c 0.00 0.00 62.50 522.00 826.50 934.50 827.50 677.00 487.22 a 52.50 0.00 4389.72
1951 0.00 1.00 5.68 a 103.00 0.00 z 762.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 872.18
1952 0.00 a 0.00 7.00 314.50 586.00 911.50 1062.00 926.00 713.00 227.00 0.00 z 0.00 4747.00
1953 0.00 0.00 a 38.50 96.50 602.50 944.50 1001.00 1017.66 b 713.00 574.50 0.00 z 2.50 4990.66
1954 0.00 b 0.00 p 14.50 334.00 440.00 967.00 1068.50 948.60 a 665.50 307.93 a 85.50 0.00 4831.53
1955 0.00 b 0.00 b 11.33 e 391.00 700.60 a 818.00 1176.00 1108.00 744.00 405.50 5.50 0.00 5359.93
1956 0.00 a 0.00 0.50 131.00 585.50 1011.50 934.13 a 985.50 620.00 561.00 113.50 0.00 4942.63
1957 0.00 0.00 a 13.00 303.50 571.50 854.00 1126.85 a 976.50 630.00 303.00 54.50 0.00 4832.85
1958 0.00 a 17.50 15.00 258.75 b 659.00 720.52 a 954.00 998.50 714.50 465.50 118.50 0.00 c 4921.77
1959 0.00 0.00 22.00 229.50 705.00 931.03 a 1044.00 1097.00 721.50 212.50 12.00 4.65 a 4979.18
1960 0.00 0.00 23.77 a 271.00 600.50 783.00 995.00 1000.50 715.00 372.50 51.50 9.50 4822.27
1961 0.00 3.00 33.00 107.00 543.50 899.00 1004.50 1002.00 643.50 395.50 45.56 c 7.75 a 4684.31
1962 0.00 0.00 12.00 222.50 727.00 859.00 935.50 977.50 599.50 448.50 31.50 38.50 4851.50
1963 0.00 0.00 102.50 297.50 569.50 990.00 1093.50 951.50 741.50 675.00 119.00 0.00 5540.00
1964 0.00 6.00 20.00 293.50 735.00 886.50 1129.00 932.50 648.00 334.50 193.50 0.00 5178.50
1965 0.00 0.00 0.00 131.00 703.50 826.50 974.00 903.00 504.50 398.00 68.00 4.50 4513.00
1966 0.00 11.50 90.50 162.50 489.50 897.50 1114.50 904.50 662.50 338.50 42.50 0.00 4714.00
1967 0.00 0.00 73.50 238.50 458.00 864.50 948.50 876.00 664.50 325.50 38.50 3.00 4490.50
1968 0.00 0.00 167.50 340.00 497.50 848.00 972.00 995.00 670.00 417.00 48.00 11.00 4966.00
1969 0.00 0.00 0.50 322.50 646.50 663.50 1009.00 1041.50 699.00 299.00 69.00 0.00 4750.50
1970 0.00 0.00 a 0.00 275.00 627.00 914.50 1058.50 985.50 662.00 367.00 23.00 8.00 4920.50
1971 0.00 0.00 15.50 285.00 485.00 978.00 905.50 906.50 713.00 492.50 62.00 0.00 4843.00
1972 0.00 0.00 13.50 158.00 704.50 800.00 946.00 971.00 625.00 249.00 19.00 1.50 4487.50
1973 2.50 0.00 104.00 210.50 485.00 879.00 1014.00 997.00 596.00 465.50 34.00 0.00 4787.50
1974 0.00 0.00 24.50 249.50 453.00 776.00 1116.00 876.50 516.50 347.00 60.00 0.00 4419.00
1975 0.00 0.00 1.00 118.50 666.50 827.50 1056.00 951.00 522.50 404.50 159.00 4.00 4710.50
1976 0.00 9.00 82.50 336.00 563.50 918.00 1082.50 990.00 648.50 225.00 19.50 0.00 4874.50
1977 0.00 0.00 116.00 470.50 881.50 866.50 1116.50 891.50 694.00 254.50 87.50 2.50 5381.00
1978 0.00 0.00 35.50 173.00 608.50 817.00 937.00 962.00 769.00 261.50 69.44 c 0.00 a 4632.94
1979 0.00 a 0.00 16.50 181.00 489.50 800.00 956.00 872.98 c 691.50 247.00 40.50 2.50 4297.48
1980 0.00 0.00 12.50 276.50 658.50 855.00 1094.50 952.70 c 645.50 218.00 47.50 0.00 4760.70
1981 7.00 40.00 77.50 305.69 a 529.00 828.00 982.00 920.50 615.00 253.00 114.50 0.00 4672.19
1982 0.00 a 0.00 26.00 207.00 707.00 705.50 0.00 z 935.00 604.66 a 360.50 44.50 26.50 3616.66
1983 0.00 1.00 42.50 123.50 454.50 837.50 1106.00 1102.00 678.50 310.00 78.50 0.00 4734.00
1984 0.00 5.50 1.50 231.50 503.00 892.50 957.00 1032.00 586.00 380.00 38.28 a 0.00 b 4627.28
1985 0.00 a 0.00 27.50 402.50 722.50 749.00 1008.00 845.00 0.00 z 321.50 25.50 0.00 a 4101.50
1986 0.00 0.00 96.00 366.00 679.00 900.50 1093.00 866.00 676.00 347.50 25.50 0.00 5049.50
1987 0.00 0.00 106.00 454.50 753.50 962.50 1110.00 928.00 714.00 200.50 101.50 0.50 5331.00
1988 0.00 0.00 40.00 271.50 780.50 999.00 1134.00 1090.00 725.00 210.00 39.50 0.00 5289.50
1989 2.00 0.00 62.00 242.00 587.97 a 808.50 1093.00 961.00 653.00 376.50 18.00 0.00 4803.97
1990 0.00 0.00 75.95 a 308.50 524.50 886.50 1001.50 984.50 763.00 336.50 136.00 0.50 5017.45
1991 0.00 1.50 50.50 334.50 695.50 373.00 r 1003.50 993.00 625.50 292.00 10.00 0.00 4006.00
1992 0.00 0.00 27.00 174.50 662.00 782.50 848.50 840.50 649.50 328.50 10.50 0.00 4323.50
1993 0.00 0.00 16.00 174.50 596.50 781.50 994.00 1001.00 513.50 317.50 30.50 0.00 4425.00
1994 0.00 0.00 36.00 271.50 641.00 925.50 934.50 863.50 746.00 433.00 95.00 0.00 4946.00
1995 0.00 0.00 87.00 137.00 552.00 944.50 1050.50 1124.50 643.00 325.50 2.00 0.00 4866.00
1996 0.00 1.50 10.00 173.50 500.00 861.50 931.50 961.50 683.00 360.00 18.00 0.00 4500.50
1997 0.00 3.00 27.50 224.00 465.00 909.00 977.50 887.50 716.00 393.50 8.00 0.00 4611.00
1998 0.00 15.50 82.50 368.50 788.00 780.00 1027.00 991.50 837.50 411.00 73.00 42.00 5416.50
1999 0.00 0.00 61.50 282.50 662.50 817.50 1073.12 a 870.00 634.50 278.50 108.50 4.50 4793.12
2000 0.00 40.50 140.00 237.00 605.00 805.50 955.50 944.00 614.00 470.00 81.50 0.00 4893.00
2001 0.00 0.00 0.50 304.00 618.00 841.00 1065.50 1050.00 627.00 305.87 a 284.50 22.00 5118.37
2002 1.50 2.00 11.50 275.00 481.00 920.00 1096.00 964.50 769.50 201.00 28.50 0.00 4750.50
2003 0.00 2.50 92.50 308.00 566.50 837.00 1003.00 1058.00 696.00 350.00 43.50 3.50 4960.50
2004 0.00 3.00 64.50 319.00 544.50 769.00 959.00 808.50 819.00 353.00 91.00 0.00 4730.50
2005 0.00 0.00 55.50 361.50 516.00 997.50 1097.50 971.50 815.00 435.50 108.00 0.00 5358.00
2006 0.00 0.00 33.00 420.50 625.00 893.50 1151.50 990.50 593.50 246.00 88.00 1.00 5042.50
2007 1.50 0.50 156.00 297.00 776.00 959.50 1054.50 995.00 783.00 505.50 47.00 0.00 5575.50
2008 0.00 0.00 4.00 224.50 520.50 846.00 1037.00 962.50 741.50 355.00 107.00 0.00 4798.00
2009 0.00 6.50 70.50 253.50 610.50 823.00 877.50 910.50 765.50 178.00 148.50 0.00 4644.00
2010 0.00 0.00 119.00 484.00 655.50 880.00 1107.00 1111.50 649.00 436.50 88.50 0.50 5531.50
2011 0.00 5.00 20.00 190.00 613.50 895.00 1178.50 1010.00 660.00 466.55 a 98.50 0.00 5137.05
2012 0.00 0.00 a 377.17 a 304.50 782.23 a 961.00 1220.88 a 978.00 681.00 229.00 k 0.00 z 0.00 z 5304.78
Period of Record Statistics
MEAN 0.40 2.63 47.84 259.40 602.32 860.62 1029.82 963.07 668.27 354.74 65.36 3.23 4850.19
S.D. 1.81 7.50 58.05 95.89 102.49 74.84 78.74 72.18 75.42 98.39 49.95 8.18 323.88
SKEW 5.73 4.05 3.01 0.11 0.35 -0.08 0.07 0.15 -0.19 0.59 1.66 3.44 0.43
MAX 12.92 40.50 377.17 484.00 881.50 1011.50 1220.88 1124.50 837.50 675.00 284.50 42.00 5575.50
MIN 0.00 0.00 0.00 62.50 440.00 663.50 848.50 808.50 504.50 178.00 0.00 0.00 4297.48
NO YRS 68 67 68 67 66 66 65 67 66 66 64 66 59