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 201302
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
1893 0.00 0.00 29.00 104.50 424.50 0.00 z 1002.00 899.50 701.00 237.00 80.50 0.00 3478.00
1894 0.00 0.00 82.50 254.00 598.00 899.50 1076.50 997.00 701.38 a 235.00 f 0.00 z 0.00 4608.88
1895 0.00 13.50 50.50 414.00 523.50 724.50 911.50 906.50 717.50 226.00 30.00 0.00 4517.50
1896 0.00 15.50 0.00 z 0.00 z 617.00 741.00 914.50 e 924.00 545.50 187.50 0.00 a 0.00 3945.00
1897 0.00 0.00 z 11.00 177.50 503.00 712.50 1018.35 a 804.00 916.67 c 338.00 33.50 0.00 4514.52
1898 0.00 3.00 36.50 204.50 471.95 b 814.00 1001.00 989.50 688.50 146.00 6.50 0.00 4361.45
1899 0.50 2.15 b 0.00 319.66 a 563.50 813.50 973.50 989.50 561.00 298.50 86.50 1.60 b 4609.91
1900 2.50 0.00 48.00 350.00 705.00 799.50 932.00 1051.50 0.00 z 0.00 z 82.00 0.00 3970.50
1901 0.00 0.00 25.50 240.00 494.50 676.50 1075.50 929.50 540.00 305.00 7.50 0.00 4294.00
1902 2.50 0.00 a 62.00 173.00 577.00 572.00 846.00 744.50 407.50 326.00 0.00 0.00 z 3710.50
1903 0.00 z 0.00 g 33.50 257.50 575.57 a 720.50 895.79 b 860.25 a 574.50 204.50 l 79.44 c 0.00 b 3997.05
1904 0.00 a 0.00 20.15 a 102.12 d 529.58 a 707.50 902.88 c 890.00 662.59 a 390.00 114.50 1.07 b 4320.38
1905 0.00 5.00 133.96 c 216.21 a 400.70 d 722.40 e 869.00 1011.50 731.79 b 254.72 a 66.43 b 1.11 c 4412.81
1906 7.48 b 9.15 b 5.68 a 217.00 i 542.50 691.00 854.57 a 942.63 d 666.43 b 245.42 a 30.52 a 0.00 3995.38
1907 0.00 a 2.15 b 79.10 b 41.50 i 292.43 a 688.93 b 878.50 911.92 a 568.50 270.96 d 31.00 0.00 3723.50
1908 0.50 0.00 21.18 a 310.50 492.68 c 710.00 c 907.00 811.50 809.48 a 266.00 58.00 0.00 c 4386.84
1909 0.00 j 0.00 g 6.00 77.31 d 477.92 a 778.97 a 913.47 a 1033.85 a 612.69 d 223.56 e 104.44 c 0.00 g 4228.20
1910 0.00 d 0.00 d 258.52 c 302.22 c 331.24 d 576.00 g 0.00 z 843.20 a 583.93 b 460.50 0.00 z 0.00 2779.61
1911 0.00 a 0.00 b 83.00 200.69 a 643.80 c 786.00 f 946.00 797.70 c 432.00 f 174.50 0.00 f 0.00 f 2845.69
1912 0.00 a 0.00 b 2.07 a 218.28 a 437.44 d 477.50 i 683.00 h 804.21 e 471.72 a 209.50 h 41.25 b 0.00 e 1974.97
1913 0.00 a 5.04 c 19.24 b 235.50 423.87 e 705.50 f 874.00 973.92 a 631.15 d 0.00 z 38.00 f 2.21 c 3164.93
1914 0.00 d 0.00 z 13.29 c 248.08 d 479.50 549.50 i 1013.50 818.40 a 553.89 c 322.40 a 69.60 e 0.00 m 3518.65
1915 0.00 z 0.00 b 0.00 e 369.11 b 267.08 e 476.50 f 730.57 a 703.38 b 534.83 a 289.16 b 55.00 i 0.00 k 2894.11
1916 0.00 c 0.00 z 25.50 f 132.32 b 456.70 c 670.00 c 1200.50 955.00 553.45 a 194.30 c 0.00 z 0.00 z 4162.27
1917 0.00 z 0.00 b 14.35 d 90.00 377.34 b 673.00 1022.48 a 844.23 a 0.00 z 0.00 z 112.50 d 0.00 e 3133.91
1918 0.00 0.00 b 124.55 c 93.50 563.68 a 647.50 f 910.88 a 947.57 a 461.11 c 371.40 e 0.00 z 0.00 z 3472.70
1919 0.00 e 0.00 a 48.80 d 172.22 c 474.30 a 633.00 h 1024.50 894.87 a 695.00 181.02 c 0.00 z 0.00 z 3490.70
1920 0.00 z 0.00 z 0.00 z 0.00 z 311.00 l 760.00 c 895.42 e 817.37 a 660.50 443.62 b 0.00 c 0.00 a 3576.91
1921 0.00 c 20.50 95.00 301.61 b 565.50 1005.00 d 1077.77 a 918.78 b 654.64 b 337.38 a 11.67 c 5.88 b 4993.72
1922 0.00 h 0.00 b 29.28 d 194.44 c 522.02 c 807.69 d 822.57 b 1027.13 a 860.17 a 422.63 a 29.50 z 0.00 4685.94
1923 0.00 a 0.00 c 13.00 u 187.00 f 556.21 e 861.21 a 1090.50 871.44 d 723.50 274.00 54.50 8.30 c 4439.67
1924 0.00 b 8.29 a 0.00 c 245.89 b 346.54 c 678.75 b 907.55 b 935.34 b 524.42 d 269.50 m 24.81 d 0.00 a 3671.59
1925 0.00 a 0.00 a 0.00 z 301.50 h 516.09 d 779.40 e 960.47 b 466.00 r 818.28 a 43.00 i 9.50 f 0.00 a 3074.23
1926 0.00 b 1.56 a 45.47 a 291.72 a 734.18 a 759.64 b 1052.93 b 944.47 a 536.40 e 281.21 c 12.50 0.00 a 4660.08
1927 0.00 h 0.00 a 29.00 180.00 a 408.34 b 753.21 b 713.00 f 828.22 a 703.85 d 325.00 f 7.76 a 0.00 c 2910.38
1928 0.00 c 0.00 a 94.66 c 102.22 c 609.84 b 708.21 b 964.88 c 963.77 c 558.89 c 301.00 21.11 c 2.00 4326.58
1929 0.00 0.00 b 21.50 212.00 419.00 700.50 951.00 936.50 466.50 0.00 z 3.50 0.00 a 3710.50
1930 0.00 0.00 z 40.41 c 308.50 515.00 805.00 1227.50 1114.50 676.00 328.50 83.50 1.00 5099.91
1931 9.00 11.50 25.50 318.00 501.00 1090.71 b 1198.50 1057.00 891.00 410.00 106.50 0.00 5618.71
1932 0.00 13.96 b 8.78 a 253.00 641.50 922.00 1130.50 1039.50 668.50 249.00 35.00 6.20 a 4967.95
1933 0.00 d 7.00 38.50 235.71 b 533.20 a 1173.00 1147.00 947.50 870.50 330.00 37.24 a 3.62 a 5323.27
1934 4.00 6.22 a 55.80 a 260.17 a 995.00 565.00 l 1242.50 1023.00 a 560.69 a 493.50 80.36 b 0.00 a 4721.24
1935 0.00 0.50 76.50 168.50 368.00 716.25 b 1275.00 1041.08 a 699.81 d 287.27 a 10.50 0.00 4643.41
1936 0.00 0.00 39.78 a 203.50 741.00 907.24 a 1355.50 1172.00 796.00 264.50 9.31 a 0.00 a 5488.83
1937 0.00 0.00 a 22.00 182.00 643.00 784.00 1159.00 1203.00 727.00 280.00 71.50 0.00 5071.50
1938 0.00 z 0.00 a 101.00 321.72 a 485.50 875.00 1127.00 1175.00 793.00 579.18 a 40.00 0.00 5497.41
1939 0.00 0.00 d 128.00 242.50 801.00 870.50 1171.28 a 1000.50 815.50 331.18 a 48.50 33.50 5442.47
1940 0.00 0.00 8.00 176.50 542.00 836.00 1145.00 931.50 818.50 515.00 32.00 0.00 5004.50
1941 0.00 0.00 16.00 321.50 720.50 849.00 1105.00 1109.00 708.50 363.50 65.50 35.50 5294.00
1942 1.50 0.00 41.00 400.50 463.00 791.50 990.50 971.50 527.50 396.00 58.00 0.00 4641.00
1943 0.00 7.50 97.50 299.00 473.00 834.50 1092.00 1027.00 602.00 369.50 8.50 1.50 4812.00
1944 6.00 0.00 0.00 132.50 727.00 835.50 964.50 927.00 630.50 371.00 81.00 0.00 a 4675.00
1945 0.00 0.00 a 167.00 188.79 a 414.50 615.00 946.00 949.00 619.00 334.50 25.34 a 0.00 l 4259.14
1946 0.00 e 0.00 191.00 409.82 b 451.80 d 854.48 a 1009.00 868.50 610.50 264.50 13.27 d 1.00 4673.87
1947 1.50 0.00 13.50 h 132.93 a 429.35 a 711.67 c 1001.00 1203.00 724.14 a 571.43 a 27.50 0.00 4802.52
1948 0.00 0.00 51.00 388.00 555.50 748.50 1031.50 995.00 818.00 308.97 a 60.00 0.00 c 4956.47
1949 0.00 0.00 12.50 280.71 b 700.00 717.50 g 1131.00 1092.48 b 546.50 318.00 94.00 0.00 4175.20
1950 0.00 0.00 13.00 100.71 b 426.50 802.00 873.17 a 849.06 d 638.28 a 403.00 37.00 0.00 b 4142.71
1951 0.00 a 6.00 0.00 136.00 566.02 b 660.00 a 933.10 a 904.68 a 475.56 c 303.50 13.50 3.21 b 4001.56
1952 0.00 0.00 a 3.00 350.19 d 576.50 947.50 1068.00 978.00 766.00 253.00 55.71 b 1.66 c 4999.57
1953 0.00 0.00 a 68.00 124.00 540.50 906.72 a 1033.33 a 1023.53 b 695.50 524.50 104.50 0.00 5020.59
1954 0.00 22.00 7.00 329.50 434.50 0.00 z 1140.59 b 999.50 676.00 239.50 123.00 0.00 3971.59
1955 0.00 0.00 46.50 a 451.50 739.50 785.50 1223.00 1179.50 717.50 375.50 15.00 0.00 5533.50
1956 0.00 0.00 24.50 104.00 607.50 1039.00 954.50 938.50 648.00 518.00 46.00 0.00 4880.00
1957 0.00 0.00 13.00 250.86 a 484.50 756.50 1154.00 981.50 558.00 289.00 21.50 2.50 j 4508.86
1958 0.00 29.50 14.50 193.50 691.00 743.00 949.50 1100.50 761.38 a 430.68 c 66.00 0.00 a 4979.56
1959 0.00 b 0.00 a 70.78 a 277.22 c 600.50 570.50 l 1068.47 a 1135.63 a 632.68 b 143.38 c 0.00 z 0.00 z 3928.66
1960 0.00 z 0.00 z 0.00 z 247.00 f 569.50 744.00 1045.50 1005.50 642.50 330.50 55.50 0.00 4393.00
1961 0.00 0.50 23.25 a 139.00 473.50 871.55 a 989.50 1016.50 571.00 340.00 33.50 5.00 4463.30
1962 0.00 a 6.00 4.50 243.00 662.50 772.00 920.00 912.00 533.00 386.50 66.00 32.03 a 4537.53
1963 2.00 4.50 130.72 a 214.50 f 567.54 e 937.20 e 747.50 i 981.00 738.62 a 566.50 42.00 0.00 3970.08
1964 0.00 0.00 4.50 300.50 680.00 888.50 1157.50 911.50 639.00 323.50 84.50 0.00 4989.50
1965 0.00 0.00 4.00 225.00 636.00 841.00 1016.00 985.50 376.50 371.00 60.50 0.00 4515.50
1966 0.00 0.00 114.50 117.50 509.50 846.50 1206.50 893.00 606.00 292.50 25.50 0.00 4611.50
1967 0.00 0.00 137.50 229.50 473.50 787.00 974.50 931.00 644.50 290.00 16.50 0.00 4484.00
1968 0.00 0.00 197.50 269.50 410.50 877.50 996.00 1002.50 629.00 314.50 23.50 3.00 4723.50
1969 0.00 0.00 0.00 290.00 632.00 667.50 1038.50 1051.00 704.50 162.00 35.00 0.00 4580.50
1970 0.00 0.00 0.00 204.00 663.50 892.50 1102.50 1057.50 708.00 272.50 0.00 0.50 4901.00
1971 0.00 0.00 43.50 310.50 508.00 953.50 920.50 1080.50 638.00 375.00 35.00 0.00 4864.50
1972 0.00 0.00 37.00 194.50 621.50 841.50 938.00 956.00 660.50 234.00 0.00 z 0.00 z 4483.00
1973 0.00 0.00 60.00 216.00 528.50 878.50 1051.50 1109.00 584.00 401.50 33.50 0.00 4862.50
1974 2.00 1.50 44.00 297.00 516.00 813.00 1215.50 904.00 602.00 399.00 42.00 0.00 4836.00
1975 0.00 0.00 21.50 134.50 641.50 830.00 1173.00 1035.00 564.50 428.00 129.50 0.00 4957.50
1976 0.00 19.50 89.50 362.50 571.00 963.50 1178.00 1155.00 749.00 225.50 22.00 0.00 a 5335.50
1977 0.00 b 6.00 60.00 425.50 831.50 908.00 1169.73 a 905.50 680.50 263.00 60.00 0.00 5309.73
1978 0.00 0.00 60.50 196.00 601.00 853.00 1009.00 990.50 839.50 310.00 93.00 0.00 4952.50
1979 0.00 0.00 1.00 203.50 499.50 832.50 1019.00 920.50 752.50 293.00 25.00 7.50 4554.00
1980 0.00 0.00 18.50 330.00 645.50 896.90 a 1105.50 995.50 737.50 304.50 56.50 0.00 c 5090.40
1981 5.50 32.00 95.58 a 455.50 541.00 884.50 1053.00 921.00 681.00 260.50 95.50 0.00 5025.08
1982 0.00 6.50 15.00 263.50 676.50 709.50 1052.50 964.00 601.00 251.00 12.50 3.62 a 4555.62
1983 0.00 5.50 54.00 127.00 483.50 786.50 1107.50 1140.00 677.50 289.50 86.00 0.00 4757.00
1984 0.00 0.00 2.00 201.50 514.00 852.00 1002.50 1016.50 544.50 422.50 58.50 0.00 4614.00
1985 0.00 12.00 77.00 421.50 730.00 728.50 1008.50 872.50 577.00 279.50 12.50 0.00 4719.00
1986 0.00 a 0.00 a 111.00 251.50 623.50 904.50 1045.50 830.05 b 601.03 a 0.00 z 11.00 l 0.00 4367.09
1987 0.00 6.00 75.50 449.50 795.00 956.50 1101.00 901.50 648.50 169.50 67.00 0.00 5170.00
1988 0.00 b 0.00 42.00 229.50 734.00 1069.00 1134.00 1023.00 635.00 168.00 29.50 0.00 b 5064.00
1989 0.00 0.00 a 35.50 269.50 567.50 790.50 1121.00 982.00 585.50 318.00 22.76 a 0.00 4692.26
1990 3.00 0.00 a 51.00 235.50 531.00 851.50 950.50 991.00 752.50 296.00 67.00 0.00 4729.00
1991 0.00 5.00 55.50 281.38 a 618.50 969.00 1015.00 1008.00 640.50 255.00 4.00 0.00 4851.88
1992 0.00 0.50 55.00 139.00 610.00 754.50 766.50 753.00 513.50 236.50 0.00 0.00 3828.50
1993 0.00 0.00 24.28 a 115.00 478.50 662.50 489.50 o 915.00 443.50 244.50 1.50 0.00 2884.78
1994 0.00 0.00 37.00 218.00 673.50 839.00 871.00 861.00 694.00 326.00 41.00 0.00 4560.50
1995 0.00 1.50 94.60 b 72.00 441.50 858.00 1041.00 1049.50 623.50 234.00 0.50 0.00 4416.10
1996 0.50 9.00 18.00 140.00 468.00 883.50 903.50 935.00 581.00 309.50 11.50 0.00 4259.50
1997 0.00 0.00 30.00 212.00 409.50 897.50 1015.50 915.50 712.00 403.50 4.00 0.00 4599.50
1998 6.20 a 11.50 42.00 249.00 715.00 740.00 1059.00 1005.50 824.50 333.00 43.50 31.00 5060.20
1999 0.00 12.00 71.50 249.50 573.50 836.50 1107.00 986.50 586.00 279.00 143.00 5.50 4850.00
2000 0.00 64.50 152.00 231.00 602.00 778.50 1035.50 979.00 671.50 378.50 24.50 0.00 4917.00
2001 0.00 0.00 0.00 259.00 584.50 869.50 1123.50 1015.00 652.50 307.50 203.50 0.00 5015.00
2002 3.00 1.50 1.50 252.00 472.00 940.50 1185.50 956.00 720.00 94.50 26.00 0.00 4652.50
2003 5.00 0.00 88.50 292.50 493.50 766.50 1005.50 1017.00 610.00 352.50 23.00 0.00 4654.00
2004 0.00 1.00 90.50 260.00 517.00 718.00 917.00 767.50 759.50 306.50 62.50 0.00 4399.50
2005 0.00 10.50 g 43.50 294.50 475.85 a 879.00 1053.00 943.50 775.50 324.98 a 73.50 0.00 4863.33
2006 0.50 0.00 22.50 323.00 541.50 837.50 1077.50 968.00 477.00 230.50 62.50 0.00 4540.50
2007 0.00 0.00 119.50 238.50 661.50 833.00 1044.00 959.00 672.50 322.50 50.50 0.00 4901.00
2008 0.00 0.00 0.50 122.50 409.00 735.50 984.50 940.50 641.00 235.50 76.50 0.00 4145.50
2009 0.00 0.00 54.00 168.00 512.50 713.50 813.50 829.50 663.00 92.00 73.00 0.00 3919.00
2010 0.00 0.00 44.00 350.50 460.00 799.00 985.00 1018.50 566.00 368.00 54.50 0.00 4645.50
2011 0.00 a 0.00 e 17.10 b 133.97 a 488.52 b 756.43 b 1096.88 a 895.38 a 528.75 b 359.08 a 21.00 0.00 a 4297.11
2012 2.50 0.00 308.50 314.50 600.50 909.00 1206.00 964.00 681.00 219.50 35.00 11.50 5252.00
2013 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 z 0.00
Period of Record Statistics
MEAN 0.59 3.54 52.07 239.65 550.71 814.90 1029.33 962.87 649.66 313.43 47.34 1.94 4752.74
S.D. 1.63 8.40 53.67 90.25 116.40 102.41 114.01 98.00 104.30 94.41 36.52 6.43 369.04
SKEW 3.23 4.37 1.99 0.30 0.55 0.57 0.08 0.11 0.08 0.49 1.12 4.32 0.00
MAX 9.00 64.50 308.50 455.50 995.00 1173.00 1355.50 1203.00 916.67 579.18 203.50 35.50 5618.71
MIN 0.00 0.00 0.00 72.00 267.08 572.00 730.57 703.38 376.50 92.00 0.00 0.00 3828.50
NO YRS 112 112 113 112 119 107 115 119 117 109 107 108 78