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 z 0.00 z 0.00 n 19.00 219.00 i 892.00 912.00 729.50 502.00 157.00 43.00 0.00 c 3254.50
1894 0.00 0.00 18.60 a 187.50 447.00 866.50 968.00 891.50 616.50 184.00 0.00 0.00 4179.60
1895 0.00 2.00 10.50 269.50 471.00 771.50 874.50 766.50 555.50 136.50 34.00 0.00 3891.50
1896 0.00 1.00 0.00 206.00 664.50 773.00 870.00 813.00 451.50 142.00 0.00 0.00 3921.00
1897 0.00 0.00 15.50 136.50 432.00 624.31 a 993.50 0.00 z 732.50 275.50 4.00 0.00 z 3213.81
1898 0.00 0.00 7.50 155.00 451.50 788.00 903.13 a 795.00 579.00 106.50 8.50 0.00 a 3794.13
1899 0.00 0.00 0.00 225.00 413.50 714.50 914.00 853.00 441.50 207.50 14.50 0.00 3783.50
1900 0.00 0.00 0.00 a 291.00 579.50 770.00 867.50 1056.00 555.00 461.50 16.00 0.00 4596.50
1901 0.00 0.00 b 0.00 229.50 538.50 747.00 e 1040.00 926.00 526.00 300.50 6.00 0.00 4313.50
1902 0.00 1.00 49.00 134.50 577.50 473.50 f 878.91 d 784.50 466.00 181.50 26.00 0.00 3098.91
1903 0.00 0.00 5.88 b 134.50 528.55 a 660.00 796.18 a 726.00 445.00 205.00 42.50 0.00 3543.61
1904 0.00 a 0.00 0.00 61.03 a 458.00 685.56 c 773.00 753.50 485.50 210.00 74.48 a 0.00 v 3501.07
1905 0.00 0.00 42.50 127.00 338.00 687.00 822.00 885.50 666.00 207.50 15.50 0.00 3791.00
1906 0.00 0.00 0.00 279.50 427.50 698.00 860.50 851.50 684.50 236.50 11.00 0.00 4049.00
1907 0.00 0.00 17.00 17.00 224.50 691.00 830.00 834.50 451.00 185.50 9.50 0.00 c 3260.00
1908 0.00 0.00 7.23 a 238.50 433.00 678.00 898.00 796.18 a 735.50 266.50 26.50 0.00 4079.42
1909 0.00 0.00 1.50 34.50 452.50 751.50 898.50 962.50 566.00 215.00 66.50 0.00 3948.50
1910 0.00 0.00 198.00 265.00 332.00 0.00 z 904.50 0.00 z 538.50 372.50 0.00 a 0.00 a 2610.50
1911 0.00 0.00 z 0.00 z 246.50 643.00 907.00 895.50 747.50 496.00 156.15 d 0.00 0.00 b 4091.65
1912 0.00 z 0.00 1.00 194.00 484.00 716.00 1003.50 0.00 z 0.00 z 0.00 z 23.00 0.00 2421.50
1913 0.00 z 0.00 0.00 z 254.50 394.50 822.50 841.00 0.00 z 550.00 253.50 0.00 z 20.50 3136.50
1914 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
1915 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
1916 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 171.50 28.50 0.00 a 200.00
1917 0.00 0.00 0.00 62.00 341.52 a 587.07 a 950.50 747.10 a 585.54 b 83.91 b 48.62 a 0.00 3406.26
1918 0.00 0.00 72.50 118.50 516.09 d 447.50 k 566.00 k 0.00 z 361.73 d 0.00 z 0.00 z 0.00 z 1068.82
1919 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
1920 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
1921 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
1922 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
1923 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
1924 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
1925 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
1926 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
1927 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
1928 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
1929 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
1930 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
1931 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
1932 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
1933 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
1934 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
1935 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
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 z 0.00 z 0.00 120.50 576.00 795.00 1000.00 1037.50 588.50 151.00 s 30.50 0.00 4148.00
1938 0.00 0.00 a 59.00 236.79 b 427.00 818.50 927.00 0.00 z 76.00 y 362.50 38.00 l 0.00 2830.79
1939 0.00 u 0.00 a 39.50 128.00 622.50 752.00 891.50 782.00 549.50 128.00 2.00 0.00 z 3895.00
1940 0.00 a 0.00 0.00 127.50 499.50 655.00 982.50 794.50 648.00 346.50 5.77 d 0.00 4059.27
1941 0.00 b 0.00 i 0.00 274.50 643.00 795.50 1010.00 882.00 611.50 310.50 34.00 21.50 4582.50
1942 0.00 0.00 19.50 0.00 z 261.00 n 676.00 855.00 857.50 487.00 339.00 10.00 0.00 3244.00
1943 0.00 0.00 l 0.00 z 0.00 z 463.97 a 892.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 a 0.00 1355.97
1944 1.50 0.00 0.00 102.50 571.00 800.50 895.00 875.50 537.00 253.00 50.00 0.00 a 4086.00
1945 0.00 z 0.00 88.00 r 80.00 308.50 593.00 905.50 925.50 506.50 208.50 0.00 z 0.00 z 3527.50
1946 0.00 z 0.00 93.50 243.50 404.00 727.00 914.00 818.00 546.00 195.00 6.50 0.00 a 3947.50
1947 0.00 0.00 q 1.00 52.50 264.00 693.50 802.50 g 1111.50 615.50 421.50 28.50 0.00 f 3188.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 931.50 890.00 694.50 240.25 c 15.00 j 0.00 b 2756.25
1949 0.00 0.00 0.00 c 69.50 h 0.00 z 0.00 z 173.00 y 911.50 421.50 272.50 31.50 0.00 1637.00
1950 0.00 0.00 a 0.00 29.00 358.00 749.00 802.00 708.50 582.00 280.50 22.50 0.00 3531.50
1951 0.00 0.00 0.00 85.50 570.50 603.00 872.00 733.50 399.00 215.00 0.00 b 3.50 3482.00
1952 0.00 0.00 0.00 a 264.00 481.50 758.00 900.00 777.50 590.00 148.50 30.50 0.00 3950.00
1953 0.00 0.00 3.50 48.50 451.50 742.00 884.50 934.50 564.00 427.00 62.00 0.00 4117.50
1954 0.00 1.00 0.00 158.50 327.00 770.50 935.00 815.00 508.50 191.00 47.00 0.00 a 3753.50
1955 0.00 0.00 14.50 324.50 648.50 754.50 1059.50 973.50 549.00 278.00 0.00 0.00 4602.00
1956 0.00 0.00 0.00 a 42.50 465.50 854.50 808.00 835.00 446.50 418.50 56.50 0.00 a 3927.00
1957 0.00 a 0.00 0.00 235.34 a 428.12 b 680.50 1024.15 d 835.00 489.00 188.21 c 13.39 b 0.00 e 3893.72
1958 0.00 2.69 b 2.67 b 133.50 f 345.50 h 546.50 804.97 a 825.00 582.50 281.07 a 34.66 a 0.00 3080.05
1959 0.00 a 0.00 20.00 102.00 g 524.42 a 838.45 a 954.28 a 962.50 572.00 100.75 c 0.00 0.00 3972.40
1960 0.00 0.00 b 0.00 154.50 502.50 691.50 968.50 941.00 607.00 282.00 4.00 0.00 4151.00
1961 0.00 a 2.50 29.50 54.00 397.50 818.00 898.00 964.50 566.00 280.55 a 7.00 0.00 4017.55
1962 0.00 0.00 0.00 145.34 a 530.50 736.00 851.50 895.90 a 490.50 343.50 16.50 18.50 4028.24
1963 0.00 0.00 69.48 b 211.50 468.00 867.00 996.50 878.00 648.00 524.50 36.00 0.00 4698.98
1964 0.00 0.00 1.00 188.00 595.00 775.00 1007.00 790.00 529.00 266.50 103.50 0.00 4255.00
1965 0.00 0.00 b 0.00 98.50 524.50 760.50 891.50 846.50 311.90 a 307.50 47.00 0.00 3787.90
1966 0.00 0.00 24.00 61.50 401.00 790.00 1042.50 784.00 531.50 218.00 0.00 0.00 b 3852.50
1967 0.00 0.00 34.00 147.50 329.00 709.00 871.50 783.00 544.50 205.00 19.00 0.00 3642.50
1968 0.00 0.00 118.00 211.50 356.50 728.50 888.50 871.50 571.50 288.00 9.64 b 0.00 g 4043.64
1969 0.00 0.00 0.00 206.50 555.50 580.50 884.50 977.50 575.50 168.00 42.50 0.00 3990.50
1970 0.00 0.00 0.00 132.00 459.00 839.50 1020.50 888.00 585.50 241.50 1.50 0.00 4167.50
1971 0.00 0.00 2.00 220.00 410.00 844.50 795.00 819.50 580.50 327.50 6.50 0.00 4005.50
1972 0.00 0.00 k 0.00 112.50 601.50 751.00 876.00 908.50 501.00 195.00 6.00 0.00 3951.50
1973 0.00 0.00 39.00 144.50 450.00 784.50 917.50 934.50 518.00 406.50 8.00 0.00 4202.50
1974 0.00 0.00 0.00 196.00 378.50 742.50 1047.00 773.00 463.50 287.00 26.50 0.00 3914.00
1975 0.00 0.00 0.00 43.50 587.00 768.00 1053.00 871.00 467.50 317.00 102.50 0.00 4209.50
1976 0.00 0.00 18.50 271.50 475.50 860.50 970.00 951.00 600.00 177.00 2.00 0.00 4326.00
1977 0.00 a 0.00 49.00 360.00 777.50 795.50 1000.50 717.50 558.00 230.50 58.50 0.00 4547.00
1978 0.00 0.00 22.50 105.00 591.00 750.52 a 922.50 908.50 0.00 z 253.50 63.00 0.00 3616.52
1979 0.00 0.00 0.00 95.50 337.00 717.50 922.50 785.00 644.50 193.00 12.50 0.00 3707.50
1980 0.00 0.00 0.00 269.00 255.50 v 740.50 919.00 793.50 507.00 143.12 a 30.50 0.00 3402.62
1981 1.50 10.00 45.00 220.50 458.00 716.00 880.50 850.00 517.00 205.00 78.50 0.00 3982.00
1982 0.00 0.00 1.50 172.00 608.50 605.00 956.00 869.50 522.50 244.00 9.50 11.50 4000.00
1983 0.00 0.00 6.50 99.00 389.50 773.00 1038.00 1012.00 580.00 193.50 29.50 0.00 4121.00
1984 0.00 1.00 0.00 151.00 460.00 759.50 932.00 983.00 422.00 342.00 22.00 0.00 4072.50
1985 0.00 2.00 24.50 314.50 651.00 663.00 919.00 742.50 511.00 181.00 6.00 0.00 4014.50
1986 0.00 0.00 46.50 216.00 539.50 827.00 982.50 788.50 528.50 247.50 8.00 0.00 4184.00
1987 1.00 0.00 77.00 408.00 693.00 906.00 1063.50 873.50 627.00 166.50 56.50 0.00 4872.00
1988 0.00 0.00 3.00 213.50 784.00 1002.50 1122.50 998.00 613.50 178.00 6.00 0.00 4921.00
1989 0.00 0.00 3.50 172.00 558.00 768.50 1070.50 931.00 611.50 294.50 2.50 0.00 4412.00
1990 0.00 0.00 41.50 237.00 471.50 827.50 901.00 917.50 660.00 192.50 61.00 2.50 4312.00
1991 0.00 1.00 21.00 251.50 659.50 888.50 947.50 960.50 542.50 204.00 2.00 0.00 4478.00
1992 0.00 0.00 19.00 130.50 609.50 696.00 737.50 771.00 567.00 260.00 0.00 0.00 3790.50
1993 0.00 0.00 11.00 135.00 497.00 673.50 877.00 885.00 423.00 215.00 0.00 0.00 3716.50
1994 0.00 0.00 4.50 177.50 601.00 826.00 892.50 815.50 654.50 323.50 37.50 0.00 4332.50
1995 0.00 0.00 33.00 59.50 458.50 894.50 946.50 970.00 554.00 215.00 0.00 0.00 4131.00
1996 0.00 0.00 0.50 84.00 438.50 819.00 870.50 926.00 581.50 288.00 2.50 0.00 4010.50
1997 0.00 0.00 3.00 167.50 373.00 872.50 927.50 843.50 676.50 333.50 0.00 a 0.00 4197.00
1998 0.00 13.00 47.00 262.00 719.50 697.00 954.50 965.50 747.00 306.00 25.00 7.00 4743.50
1999 0.00 0.00 32.50 193.00 573.50 803.00 1041.50 899.00 565.00 231.00 94.50 2.00 4435.00
2000 0.00 7.00 105.00 179.50 586.50 697.50 941.00 911.50 571.00 339.50 45.00 0.00 4383.50
2001 0.00 0.00 0.00 201.50 568.50 811.50 1021.00 993.00 575.50 226.00 170.50 0.00 4567.50
2002 0.50 0.00 0.00 184.50 386.00 891.00 1043.50 891.50 693.50 120.50 5.00 0.00 4216.00
2003 1.00 0.00 55.00 250.00 478.00 740.50 969.00 1005.00 597.00 343.00 5.00 0.00 4443.50
2004 0.00 0.00 40.50 221.50 403.00 669.00 877.00 713.00 753.00 263.00 32.00 0.00 3972.00
2005 0.00 1.50 39.00 318.00 443.50 871.55 a 996.50 904.74 d 698.40 e 0.00 z 0.00 z 0.00 z 4273.19
2006 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
2007 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 253.50 12.00 0.00 265.50
2008 0.00 0.00 0.00 75.00 295.00 621.00 806.50 780.50 507.00 155.50 64.00 0.00 3304.50
2009 0.00 0.00 6.00 117.00 370.00 587.50 699.00 713.00 646.50 59.50 47.00 0.00 3245.50
2010 0.00 0.00 31.00 259.50 436.00 665.50 879.50 890.50 404.50 282.00 37.50 0.00 3886.00
2011 0.00 0.00 0.00 79.00 375.00 632.50 964.00 814.00 471.50 303.00 16.50 0.00 3655.50
2012 0.00 0.00 184.00 148.50 504.50 732.50 1015.00 765.00 495.00 148.50 13.50 0.00 4006.50
2013 0.00 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
Period of Record Statistics
MEAN 0.06 0.51 21.61 171.06 486.80 753.41 925.45 863.00 554.80 245.65 26.40 0.96 4055.28
S.D. 0.27 1.91 35.96 84.13 112.66 88.41 79.82 88.43 85.48 85.41 29.02 3.87 360.57
SKEW 4.48 5.04 2.80 0.20 0.29 0.02 -0.08 0.27 0.00 0.58 1.96 4.42 0.05
MAX 1.50 13.00 198.00 408.00 784.00 1002.50 1122.50 1111.50 753.00 524.50 170.50 21.50 4921.00
MIN 0.00 0.00 0.00 17.00 224.50 546.50 699.00 708.50 311.90 59.50 0.00 0.00 3245.50
NO YRS 90 90 92 91 91 92 93 90 93 94 93 91 70