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
1893 0.00 0.00 0.00 z 0.00 z 448.95 c 612.50 k 512.00 o 645.00 f 0.00 z 0.00 z 0.00 z 0.00 z 448.95
1894 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
1895 0.00 z 0.00 z 68.50 s 470.89 b 682.55 c 800.36 b 1008.61 c 1030.23 a 822.00 234.16 c 54.31 a 0.00 a 5103.12
1896 0.50 12.50 11.88 a 362.00 699.10 b 586.00 l 0.00 z 985.80 a 484.62 d 200.50 3.00 f 0.00 2756.90
1897 0.00 0.00 9.82 a 0.00 z 324.50 j 765.00 495.50 p 0.00 z 863.00 432.97 a 40.34 a 0.00 b 2111.13
1898 0.00 0.00 a 34.50 177.50 533.50 862.24 a 961.55 c 888.84 b 649.66 a 192.09 c 32.59 a 0.00 a 4332.47
1899 0.00 f 0.00 0.00 a 0.00 z 516.84 b 0.00 z 0.00 z 971.85 a 571.03 a 364.80 c 29.50 0.00 z 2454.03
1900 1.00 o 0.00 21.00 326.50 664.00 788.00 932.50 1093.00 643.50 499.62 a 22.00 0.00 4990.12
1901 0.00 a 0.00 13.00 238.00 540.00 893.50 1252.00 939.00 520.96 d 311.50 18.00 0.00 a 4725.96
1902 0.00 0.00 d 83.00 188.50 659.00 0.00 z 927.00 0.00 z 453.10 a 0.00 z 13.00 g 0.00 2310.60
1903 0.00 a 0.00 40.50 221.50 482.50 688.00 958.00 813.00 506.00 288.50 58.00 0.00 4056.00
1904 0.00 0.00 11.50 87.00 529.50 709.50 842.00 820.00 608.00 305.50 123.00 3.50 4039.50
1905 0.00 a 0.00 94.00 156.50 451.50 798.50 892.00 994.50 685.86 a 0.00 z 24.64 b 0.50 4098.00
1906 2.00 2.43 e 1.50 286.67 c 564.50 748.00 861.50 959.00 706.00 261.00 33.50 0.00 4426.10
1907 0.00 2.00 88.50 46.00 273.00 745.00 907.00 791.50 564.00 251.00 24.50 0.00 3692.50
1908 0.00 0.00 31.00 241.00 518.50 736.50 928.50 837.00 805.00 253.00 68.00 2.50 4421.00
1909 0.00 0.00 4.50 64.50 469.50 792.50 912.00 1040.00 597.00 257.00 99.50 0.50 4237.00
1910 0.00 0.00 225.00 372.50 403.50 804.64 b 968.50 840.50 560.50 413.50 0.00 0.00 4588.64
1911 0.00 0.00 71.50 197.00 700.00 1010.50 1003.50 848.88 a 609.00 193.50 0.00 1.03 a 4634.92
1912 0.00 0.00 0.00 206.50 545.50 694.00 940.00 832.00 560.00 296.00 41.50 6.50 4122.00
1913 0.00 0.00 44.00 239.50 459.00 854.00 750.50 g 996.50 617.78 c 297.00 100.50 15.00 3623.28
1914 0.00 0.00 20.50 0.00 z 563.00 817.50 1016.00 883.50 595.50 441.50 81.50 0.00 4419.00
1915 0.00 z 0.00 0.00 432.50 366.50 612.50 801.00 747.50 573.00 353.50 75.00 0.00 3961.50
1916 0.00 a 0.00 6.50 144.00 482.00 647.00 1173.00 926.50 567.00 216.00 60.00 0.50 4222.50
1917 0.00 0.00 20.00 81.00 376.50 688.50 972.50 809.00 548.50 113.00 48.00 0.00 3657.00
1918 0.00 0.00 d 100.00 84.50 585.50 806.00 948.50 972.50 502.00 429.50 77.00 8.00 4513.50
1919 3.50 0.00 v 45.50 f 170.50 502.50 880.50 1042.00 895.00 732.50 235.00 6.50 0.00 4468.00
1920 0.00 0.00 82.50 52.50 560.00 822.12 d 983.00 866.00 742.00 503.00 16.00 0.00 z 4627.12
1921 0.00 a 12.50 92.50 282.00 600.00 991.00 1114.00 888.50 681.50 366.50 16.00 23.50 5068.00
1922 0.00 0.00 13.00 191.50 634.00 889.50 890.50 1003.00 759.50 381.50 66.50 0.00 4829.00
1923 0.00 0.00 z 10.50 200.50 503.50 861.50 1102.50 847.00 673.00 253.50 9.00 11.50 f 4461.00
1924 0.00 5.00 0.00 246.00 311.55 a 688.00 888.00 894.50 484.00 420.00 46.50 0.00 3983.55
1925 0.00 0.00 51.00 385.00 446.40 a 842.50 966.00 984.50 778.00 87.00 8.00 0.00 4548.40
1926 0.00 0.00 16.00 151.00 f 719.50 780.50 1099.00 999.50 624.00 285.50 9.00 0.00 4533.00
1927 0.00 0.00 32.00 241.00 485.00 743.50 975.00 809.00 718.00 443.50 14.50 0.00 4461.50
1928 0.00 0.00 83.00 148.50 698.00 711.50 1054.00 982.50 631.00 385.00 20.00 0.00 4713.50
1929 0.00 a 0.00 a 40.00 302.00 504.00 790.50 1093.50 1024.00 623.50 323.00 12.00 10.00 4722.50
1930 0.00 33.00 43.00 292.00 563.00 824.00 1196.00 1075.00 687.00 355.50 109.00 1.00 5178.50
1931 6.00 16.50 14.00 334.50 512.50 1024.00 1127.00 1003.50 870.50 460.50 110.00 2.00 5481.00
1932 0.00 a 5.70 a 18.50 249.50 672.50 972.50 1124.50 986.50 636.00 262.50 30.00 2.50 4960.70
1933 0.00 a 1.00 37.00 248.50 570.50 1164.50 1109.50 883.00 818.00 268.00 32.00 0.00 5132.00
1934 0.50 0.50 44.00 246.50 928.93 b 1009.00 1099.50 914.00 522.50 457.00 66.00 0.00 5288.43
1935 0.00 0.00 94.00 179.00 425.50 740.50 1195.00 1004.00 696.50 222.50 7.50 0.00 4564.50
1936 0.00 0.00 19.00 184.00 736.00 824.00 1268.50 1080.50 766.00 228.50 22.50 6.00 5135.00
1937 0.00 0.00 16.00 196.50 644.00 784.00 1082.00 1150.50 703.00 281.50 58.50 0.00 4916.00
1938 0.00 0.00 a 120.50 338.50 529.50 872.50 1089.00 1057.50 763.50 546.50 52.50 0.00 5370.00
1939 0.00 0.00 108.00 239.50 785.00 924.50 1106.00 913.00 770.17 a 314.50 59.50 51.00 5271.17
1940 0.00 0.00 15.50 170.50 538.00 885.50 1108.00 889.00 749.00 497.00 41.00 0.00 4893.50
1941 0.00 0.00 12.00 341.00 751.50 831.50 1044.50 1010.00 712.50 396.00 79.50 21.00 5199.50
1942 2.50 0.00 38.00 394.00 520.50 814.00 993.00 964.00 563.50 350.50 71.50 0.00 4711.50
1943 0.00 5.00 84.00 218.50 468.50 870.50 1050.50 960.00 520.00 317.00 2.50 0.50 4497.00
1944 23.50 0.00 0.00 117.50 720.00 906.50 972.50 934.00 651.50 380.00 92.50 0.00 4798.00
1945 0.00 0.00 190.50 202.50 395.00 638.00 958.50 963.50 627.50 350.50 56.00 0.00 4382.00
1946 0.00 0.00 213.00 372.00 456.00 835.00 1013.50 870.50 613.00 378.00 11.50 14.50 4777.00
1947 4.00 0.00 11.50 130.00 442.50 710.00 1003.50 1196.50 759.00 585.50 41.00 0.00 4883.50
1948 0.00 z 0.00 z 0.00 z 356.00 543.00 812.50 1021.00 1022.00 803.50 330.00 65.00 3.00 4956.00
1949 0.00 0.00 12.00 264.00 690.50 938.00 1107.50 1037.50 574.00 423.00 111.00 0.00 5157.50
1950 0.00 0.00 12.92 a 86.50 495.00 874.50 909.00 877.00 659.00 489.50 43.50 0.00 g 4446.92
1951 0.00 8.50 2.00 134.00 676.00 691.00 969.00 890.00 511.00 338.00 42.00 7.75 c 4269.25
1952 0.00 a 0.00 14.50 331.00 572.00 981.50 1027.81 b 895.00 702.41 a 234.50 99.50 4.50 4862.72
1953 0.00 0.00 c 41.91 d 115.00 582.00 944.50 1008.00 1010.00 717.00 521.00 123.00 0.00 5062.41
1954 0.00 a 28.00 8.00 307.76 a 446.50 927.50 1081.50 940.50 701.00 274.50 106.50 0.00 4821.76
1955 0.00 0.00 40.00 459.50 721.00 819.00 1205.00 1160.95 a 735.00 382.00 10.00 0.00 5532.45
1956 0.00 0.00 a 9.30 a 145.50 615.00 1045.00 931.00 963.00 662.50 553.50 59.50 0.00 4984.30
1957 0.00 a 3.11 a 11.00 308.50 524.86 b 830.50 1168.00 949.00 606.00 279.52 a 19.66 a 1.00 4701.15
1958 1.00 14.00 a 16.00 211.50 683.50 726.00 911.00 1057.50 737.00 442.00 92.00 0.00 4891.50
1959 0.00 a 0.00 24.00 254.50 628.50 943.00 1003.50 1075.00 671.00 187.00 15.50 5.50 4807.50
1960 0.00 0.00 3.21 b 270.50 555.00 773.50 990.45 a 1000.50 701.50 357.00 64.50 3.00 4719.16
1961 0.00 0.00 25.12 b 110.00 492.50 887.50 962.50 996.65 a 605.50 0.00 z 244.50 2.50 4326.77
1962 0.00 0.00 a 0.00 209.44 c 712.50 802.00 924.50 962.00 569.00 406.00 54.50 41.85 a 4681.79
1963 0.00 0.00 134.00 298.00 563.50 962.50 1030.50 912.00 720.00 609.50 86.50 0.00 5316.50
1964 0.00 0.00 13.00 247.00 716.00 904.00 1087.00 859.73 a 617.00 324.00 147.50 0.00 4915.23
1965 0.00 0.00 0.00 157.00 682.50 845.50 1001.50 910.00 422.50 398.50 64.14 a 5.00 4486.64
1966 0.00 3.00 g 113.50 116.38 a 488.00 869.00 1138.50 853.00 592.76 a 287.00 13.50 0.00 4471.64
1967 0.00 0.00 a 89.00 213.50 428.50 797.50 945.50 854.00 562.50 260.40 a 25.50 0.00 4176.40
1968 0.00 0.00 152.42 a 258.00 409.50 833.50 947.00 909.00 584.50 334.00 49.50 0.00 4477.42
1969 0.00 0.00 0.00 220.34 a 603.00 651.50 994.50 928.00 611.50 208.00 53.50 0.50 4270.84
1970 0.00 0.00 0.00 229.50 603.00 885.00 989.50 944.00 657.00 260.50 18.00 5.00 4591.50
1971 0.00 0.00 11.00 270.00 470.00 950.50 857.50 874.00 620.50 406.00 49.00 0.00 4508.50
1972 0.00 0.00 24.00 131.50 614.50 799.50 899.50 901.00 565.00 210.00 9.00 0.00 4154.00
1973 0.00 0.00 48.00 203.50 463.50 885.00 963.50 980.50 586.50 433.50 38.50 0.00 4602.50
1974 0.00 1.00 23.00 229.00 462.00 786.50 1100.00 803.00 492.50 282.50 0.00 z 0.00 4179.50
1975 0.00 0.00 6.20 a 111.00 677.50 816.00 1051.50 953.00 511.00 348.00 157.50 1.50 4633.20
1976 0.00 32.50 0.00 z 328.85 d 570.50 846.00 1011.50 932.50 596.00 226.50 15.00 0.00 4559.35
1977 0.00 10.50 91.50 405.00 813.50 883.50 1013.00 800.00 640.50 214.50 65.50 0.00 4937.50
1978 0.00 0.00 43.50 181.00 600.00 853.50 961.50 917.50 792.50 265.00 97.00 0.00 4711.50
1979 0.00 0.00 0.00 133.00 447.50 785.00 949.00 0.00 z 655.00 251.00 34.50 0.00 3255.00
1980 0.00 0.00 8.50 226.00 583.83 a 807.50 982.50 876.50 593.00 187.00 53.50 0.00 4318.33
1981 7.00 38.37 a 84.50 310.00 512.00 832.50 963.00 859.00 618.50 213.50 114.00 0.00 4552.37
1982 0.00 1.00 12.00 199.50 599.50 667.50 1007.00 871.00 587.50 299.00 19.00 8.00 4271.00
1983 0.00 2.00 35.50 100.00 424.50 807.00 1104.50 1094.50 661.50 284.50 46.50 0.00 a 4560.50
1984 0.00 0.00 0.00 138.00 480.50 869.50 966.50 991.50 542.00 364.00 43.00 1.00 4396.00
1985 0.00 0.00 54.00 366.00 696.50 723.50 931.00 792.00 579.00 243.50 6.00 0.00 4391.50
1986 0.00 0.00 89.00 271.50 581.50 908.00 1025.50 787.00 624.00 304.00 10.50 0.00 4601.00
1987 3.50 4.00 93.50 386.00 773.00 0.00 z 1058.00 818.50 611.50 162.50 88.00 0.00 3998.50
1988 0.00 0.00 45.50 175.50 767.00 991.50 1015.50 1045.00 716.50 209.50 43.00 0.00 5009.00
1989 0.00 0.00 52.00 228.00 548.50 806.00 1055.50 933.00 582.00 335.00 13.00 1.00 4554.00
1990 1.50 0.00 50.50 224.50 447.50 875.00 935.00 895.00 723.00 234.00 88.50 4.50 4479.00
1991 0.00 0.50 37.50 256.00 644.00 944.50 980.00 900.00 572.00 247.50 1.00 0.00 4583.00
1992 0.00 0.00 53.00 121.00 596.00 767.50 746.00 730.50 543.00 283.50 6.00 0.00 a 3846.50
1993 0.00 0.00 7.00 119.50 488.00 712.50 936.50 915.50 449.00 242.50 15.50 0.00 3886.00
1994 0.00 0.00 38.50 232.00 640.00 890.50 872.50 810.00 675.50 361.00 48.50 0.00 4568.50
1995 0.00 0.00 57.50 89.48 a 456.50 847.00 989.50 1023.00 556.00 270.00 0.00 0.00 4288.98
1996 0.00 3.00 19.50 0.00 z 428.50 859.50 897.50 881.50 578.00 294.50 19.00 0.00 3981.00
1997 0.00 a 0.00 33.00 174.50 357.02 a 893.00 973.50 848.00 650.00 371.50 9.50 0.00 4310.02
1998 0.00 17.00 61.50 247.00 746.00 750.00 968.00 0.00 z 763.50 332.50 65.00 54.00 4004.50
1999 0.00 a 0.50 47.00 208.00 566.50 804.00 1081.00 893.00 613.50 269.50 126.00 3.50 4612.50
2000 0.00 48.50 146.00 230.00 644.00 771.50 946.00 919.50 630.00 376.50 54.50 0.00 a 4766.50
2001 0.00 0.00 0.00 z 251.00 602.00 841.00 1036.50 946.50 574.50 271.50 236.00 16.00 4775.00
2002 8.00 0.00 9.00 236.00 460.50 942.50 1103.00 900.00 685.00 153.50 21.50 0.00 4519.00
2003 6.50 0.00 90.00 288.00 482.50 793.00 969.00 956.00 604.00 360.00 39.00 0.00 4588.00
2004 0.00 0.00 84.00 255.50 514.50 741.00 893.00 746.00 738.50 302.00 70.50 0.00 4345.00
2005 0.00 15.00 46.50 304.50 482.00 925.50 1022.00 881.00 793.00 473.50 150.00 0.00 f 5093.00
2006 1.50 0.00 17.50 330.50 589.00 876.21 a 1072.50 934.00 532.00 243.00 65.00 0.50 4661.71
2007 0.00 0.00 120.50 243.50 694.00 860.50 974.00 925.00 672.50 462.50 39.00 0.00 a 4991.50
2008 0.00 0.00 a 1.00 124.50 467.00 805.50 962.50 838.50 635.00 257.00 97.50 0.00 4188.50
2009 0.00 0.00 51.00 163.50 539.00 785.00 806.50 804.50 656.50 111.00 97.00 0.00 b 4014.00
2010 0.00 0.00 37.00 347.00 506.73 e 855.50 1026.50 1025.00 580.00 375.50 51.50 0.00 4804.73
2011 0.00 c 0.00 a 5.50 138.00 498.00 823.00 1114.50 921.73 a 571.11 c 358.50 27.50 0.00 4457.84
2012 2.38 e 0.00 b 339.21 e 290.77 d 572.50 g 919.44 c 360.50 u 754.00 f 583.80 e 223.50 61.07 b 3.58 e 2423.76
2013 0.00 c 0.00 c 4.28 b 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 4.28
Period of Record Statistics
MEAN 0.64 2.81 45.89 228.93 559.87 832.80 1004.69 929.20 637.01 321.34 53.73 3.04 4618.38
S.D. 2.58 8.09 53.47 91.73 114.32 94.18 93.13 90.02 91.56 102.42 44.22 8.70 387.21
SKEW 6.69 3.65 2.41 0.30 0.35 0.30 0.26 0.33 0.26 0.44 1.60 4.35 -0.02
MAX 23.50 48.50 339.21 470.89 928.93 1164.50 1268.50 1196.50 870.50 609.50 244.50 54.00 5532.45
MIN 0.00 0.00 0.00 46.00 273.00 612.50 746.00 730.50 422.50 87.00 0.00 0.00 3657.00
NO YRS 115 115 114 113 117 114 113 113 118 115 115 113 91