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
1936 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
1937 0.00 a 0.00 31.52 a 289.50 765.00 961.00 1231.73 a 1208.50 768.00 267.00 33.50 0.00 5555.75
1938 0.00 0.00 135.50 284.00 605.00 907.00 1117.00 1096.00 674.50 452.50 86.00 0.00 5357.50
1939 4.65 a 5.00 52.00 222.50 882.50 1062.50 1175.00 1066.83 b 832.50 385.50 63.50 40.50 5792.98
1940 0.00 0.00 11.00 223.50 609.67 a 940.50 1144.50 951.50 796.00 503.00 59.00 6.00 5244.67
1941 0.00 0.00 13.00 299.00 l 767.00 882.50 1073.00 1011.50 792.00 421.00 89.00 18.00 5067.00
1942 1.50 0.00 z 33.00 303.00 o 551.00 867.50 1023.50 985.50 602.00 398.00 70.00 0.00 4532.00
1943 0.00 a 1.08 b 66.00 133.50 n 526.48 a 985.00 1093.50 1022.50 592.00 323.00 1.50 0.00 4611.06
1944 16.00 0.00 0.00 b 116.50 o 736.00 943.50 966.00 1036.00 737.00 401.50 0.00 z 0.00 z 4836.00
1945 0.00 z 0.00 z 0.00 z 85.00 n 446.00 697.00 975.50 960.00 630.00 336.00 0.00 z 0.00 z 4044.50
1946 0.00 z 0.00 z 0.00 z 262.00 n 506.50 841.50 1018.00 897.50 625.50 443.00 0.00 z 0.00 z 4332.00
1947 0.00 z 0.00 z 0.00 z 92.00 q 403.50 718.97 a 996.13 a 1149.58 a 721.00 618.97 a 0.00 z 0.00 z 4608.15
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 427.50 o 1084.50 1025.00 825.00 311.50 0.00 z 0.00 z 3246.00
1949 0.00 z 0.00 z 0.00 z 261.50 692.50 968.50 1118.50 1001.00 546.00 429.50 84.11 b 0.00 z 5101.61
1950 0.00 0.00 2.00 99.50 545.00 844.50 896.50 820.50 617.00 504.00 45.00 0.00 a 4374.00
1951 0.00 a 0.00 7.00 117.50 696.50 742.00 973.00 841.00 539.00 321.50 15.00 16.00 4268.50
1952 0.00 0.00 12.92 a 294.00 572.50 914.00 1047.00 897.50 684.50 95.50 p 0.00 z 0.00 a 4422.42
1953 0.00 a 0.00 35.00 105.50 598.82 a 922.00 997.50 975.50 656.50 488.50 124.50 2.00 4905.82
1954 0.00 8.50 10.50 0.00 z 0.00 z 943.50 1039.50 915.50 643.00 285.50 75.00 0.00 z 3921.00
1955 0.00 a 0.00 a 18.00 392.00 657.00 770.00 1142.50 1077.00 676.50 348.50 13.00 0.00 5094.50
1956 0.00 0.00 0.00 103.00 412.00 h 972.50 925.00 963.00 577.50 528.50 105.00 0.00 4174.50
1957 0.00 0.50 7.23 a 303.00 546.50 851.00 1111.19 b 910.50 588.00 263.00 47.50 0.00 4628.42
1958 0.00 9.85 a 2.00 262.50 634.47 a 716.50 933.74 b 962.50 687.00 428.00 106.00 0.00 i 4742.56
1959 0.00 f 0.00 9.50 235.50 703.00 880.00 980.50 1068.50 686.00 206.00 11.00 3.50 4783.50
1960 0.00 0.00 17.50 293.50 588.50 748.45 a 991.00 997.00 716.50 361.50 53.50 3.50 4770.95
1961 0.00 0.00 23.50 97.50 520.00 888.50 982.00 1011.50 650.00 389.50 39.00 10.00 4611.50
1962 0.00 0.00 10.50 229.50 742.50 826.50 906.50 908.00 571.50 447.50 21.00 33.50 4697.00
1963 0.00 0.00 85.00 268.00 529.50 932.00 1043.50 895.00 684.50 634.50 93.50 0.00 5165.50
1964 0.00 4.50 19.50 280.00 756.50 875.50 1121.50 918.50 638.00 313.00 188.00 0.00 a 5115.00
1965 0.00 0.00 0.00 136.50 720.50 821.00 988.50 906.00 523.50 370.50 71.50 1.50 4539.50
1966 0.00 8.50 75.50 158.00 483.50 892.50 1054.00 b 902.50 646.00 324.50 33.00 1.00 4579.00
1967 0.00 0.00 57.50 219.00 452.50 858.50 923.50 851.00 615.00 311.00 28.50 0.00 4316.50
1968 0.00 0.00 149.00 324.50 500.50 828.50 980.50 968.50 654.50 390.50 40.00 8.50 4845.00
1969 0.00 0.00 1.50 289.50 645.50 652.00 990.00 1004.50 656.00 275.50 37.50 0.00 4552.00
1970 0.00 0.00 0.00 270.00 623.50 903.50 1051.00 937.50 659.00 370.50 32.00 1.50 4848.50
1971 0.00 0.00 14.00 270.50 485.00 981.50 900.50 899.00 728.50 529.00 65.00 0.00 4873.00
1972 0.00 0.00 8.00 150.00 684.50 770.50 935.00 972.00 652.50 271.00 26.50 0.00 4470.00
1973 7.00 0.00 99.50 210.50 495.50 906.50 1050.00 1019.00 677.50 527.00 37.50 1.50 5031.50
1974 0.00 0.00 30.00 298.50 500.00 768.00 1109.00 904.50 534.50 357.00 54.50 0.00 4556.00
1975 0.00 0.00 1.50 135.50 679.50 862.50 1078.50 969.50 534.50 414.00 149.50 5.00 4830.00
1976 0.00 10.00 89.50 307.00 528.50 898.50 1043.50 930.00 608.50 206.50 9.50 0.00 4631.50
1977 0.00 0.00 z 99.00 470.00 844.00 861.50 1086.50 856.00 646.50 203.00 64.50 0.00 5131.00
1978 0.00 0.00 25.50 184.00 604.50 814.00 949.50 936.00 807.00 342.50 108.00 0.00 4771.00
1979 0.00 b 0.00 14.00 177.50 528.55 a 824.00 977.50 902.50 724.04 d 133.50 m 28.50 0.00 4176.59
1980 0.00 0.00 9.00 267.50 643.50 839.00 1048.50 929.50 670.50 228.00 62.00 0.00 4697.50
1981 5.50 29.00 78.50 323.00 510.50 829.50 949.50 897.00 608.00 278.00 81.50 0.00 4590.00
1982 0.00 0.00 22.00 212.00 686.00 688.50 1029.50 913.50 578.50 298.00 36.72 a 25.50 4490.22
1983 0.00 4.00 37.50 154.00 443.50 829.50 1112.00 1070.50 638.00 266.00 70.00 0.00 4625.00
1984 0.00 1.00 0.00 211.50 448.00 866.50 907.00 944.00 518.00 320.50 20.00 10.50 4247.00
1985 0.00 2.00 59.00 408.00 740.50 772.00 1040.50 895.00 679.00 321.50 23.00 0.00 4940.50
1986 0.00 0.00 101.00 351.21 a 656.00 877.00 1064.00 833.00 653.50 323.00 19.50 0.00 4878.21
1987 0.00 0.00 85.00 444.00 726.50 965.50 1113.50 918.50 680.00 179.50 90.00 0.00 5202.50
1988 0.00 0.00 a 27.26 b 228.00 731.00 962.07 a 1105.00 1081.00 712.00 202.00 33.50 0.00 5081.83
1989 2.00 0.00 61.50 215.50 559.50 807.00 1074.00 949.50 620.50 396.50 15.50 0.00 b 4701.50
1990 0.00 0.00 79.00 321.50 500.00 871.50 0.00 z 901.50 621.00 156.50 87.00 0.00 3538.00
1991 0.00 0.00 55.50 314.00 691.00 975.50 986.00 971.50 593.50 304.50 7.00 0.00 4898.50
1992 0.00 0.50 30.00 158.00 617.00 771.50 836.50 797.50 635.00 319.50 4.50 0.00 4170.00
1993 0.00 0.00 14.00 148.97 a 575.00 761.00 947.50 966.00 481.00 300.00 23.50 0.00 4216.97
1994 0.00 5.00 31.00 277.50 621.00 931.50 920.50 843.50 737.50 396.50 91.50 0.00 4855.50
1995 0.00 0.00 75.50 141.00 532.00 938.50 1048.50 1120.50 604.50 307.00 1.00 0.00 4768.50
1996 0.00 1.50 8.00 171.50 476.00 842.50 919.00 931.00 665.50 319.00 17.00 0.00 4351.00
1997 0.00 4.50 32.00 218.50 415.00 875.50 966.50 858.50 701.50 368.00 9.00 0.00 4449.00
1998 0.00 10.50 99.50 355.00 793.00 790.50 1038.00 971.50 813.50 385.00 75.50 55.00 5387.00
1999 0.00 a 0.00 84.50 333.50 689.50 883.50 1167.00 924.50 636.00 324.00 143.00 7.00 5192.50
2000 0.00 49.00 134.50 275.00 636.00 797.00 979.50 985.50 676.00 429.00 79.50 0.00 5041.00
2001 0.00 0.00 0.00 340.50 648.00 836.50 1049.00 1027.50 620.00 302.50 265.50 23.00 5112.50
2002 7.50 7.00 15.00 292.00 506.00 918.50 1127.50 934.50 756.50 203.50 32.50 3.00 4803.50
2003 2.50 2.00 83.00 311.50 563.00 802.50 997.50 1056.00 681.50 326.00 44.50 3.50 4873.50
2004 0.00 0.50 69.50 323.50 571.00 0.00 z 947.50 815.00 787.50 342.50 94.00 0.00 3951.00
2005 0.00 2.50 55.50 362.00 511.00 995.50 1068.50 953.50 780.00 399.50 105.50 0.00 5233.50
2006 4.50 0.00 31.00 377.00 609.00 857.50 1125.00 973.50 587.00 235.00 49.50 0.00 4849.00
2007 3.50 0.00 140.00 278.00 736.00 908.00 1022.50 993.79 e 770.00 519.00 55.00 0.00 5425.79
2008 0.00 0.00 4.50 218.00 532.00 848.00 1010.50 926.50 713.50 347.00 116.00 0.00 4716.00
2009 0.00 6.50 71.00 260.50 615.50 832.00 860.00 894.00 721.50 177.50 129.50 0.00 4568.00
2010 0.00 0.00 110.50 445.00 654.00 880.50 1088.50 1088.50 646.50 433.50 70.00 0.00 5417.00
2011 0.00 a 5.00 21.70 a 202.00 597.50 882.50 1158.88 a 1000.27 a 625.50 411.50 102.41 a 0.00 5007.26
2012 1.03 a 0.00 390.17 b 332.07 a 755.88 a 946.00 1206.93 a 970.82 a 669.83 a 203.50 j 0.00 z 0.00 z 5272.74
Period of Record Statistics
MEAN 0.80 2.59 47.65 257.23 607.50 862.54 1028.53 958.79 661.93 353.73 61.80 4.17 4828.35
S.D. 2.45 7.15 57.39 87.86 106.64 80.35 83.39 79.74 76.86 100.38 47.03 10.17 356.85
SKEW 4.22 4.85 3.24 0.13 0.26 -0.26 0.07 0.54 0.17 0.44 1.53 3.22 0.35
MAX 16.00 49.00 390.17 470.00 882.50 1062.50 1231.73 1208.50 832.50 634.50 265.50 55.00 5792.98
MIN 0.00 0.00 0.00 97.50 403.50 652.00 836.50 797.50 481.00 156.50 1.00 0.00 4170.00
NO YRS 70 69 71 67 73 74 75 76 76 73 69 67 57