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 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
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 10.50 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 0.00 37.00 176.00 388.00 734.00 982.00 910.00 445.00 268.50 0.00 0.00 3940.50
1930 0.00 11.00 7.00 238.50 436.50 772.50 1039.00 988.50 557.59 a 250.50 32.50 0.00 4333.59
1931 2.00 0.00 a 5.00 231.00 441.00 902.00 1005.00 882.00 748.00 309.00 54.50 0.00 4579.50
1932 0.00 17.00 2.00 222.50 555.00 877.50 1010.50 936.50 560.00 140.50 19.00 2.50 4343.00
1933 0.00 4.00 31.50 171.00 503.00 1052.00 1036.50 932.00 744.00 216.00 16.50 0.00 4706.50
1934 1.00 0.00 14.50 206.00 847.50 862.50 1092.50 913.50 466.00 379.50 44.00 0.00 4827.00
1935 0.00 1.50 32.50 121.00 362.00 690.50 1149.00 925.00 608.50 234.50 0.00 b 0.00 4124.50
1936 0.00 0.00 4.00 113.00 698.00 891.50 1306.00 1049.50 721.00 227.50 16.50 0.00 5027.00
1937 0.00 0.00 0.00 80.50 552.00 708.00 1035.00 1088.00 566.38 a 207.59 c 24.11 b 0.00 4261.58
1938 0.00 0.00 z 0.00 z 247.24 a 447.95 a 778.50 952.22 a 1044.00 627.50 392.00 22.00 0.00 4511.41
1939 0.00 0.00 87.00 148.00 659.78 a 715.00 992.00 894.50 600.00 205.24 b 14.00 17.50 4333.02
1940 0.00 0.00 0.00 104.00 427.80 a 726.50 1018.00 838.50 713.28 a 404.55 a 8.00 0.00 4240.63
1941 0.00 0.00 4.13 a 218.00 605.00 756.00 1001.00 935.68 a 521.00 244.00 20.00 16.00 4320.82
1942 0.50 0.00 5.00 247.00 312.00 626.50 845.00 833.00 427.00 315.00 23.50 0.00 3634.50
1943 0.00 0.00 22.00 188.50 0.00 z 685.00 959.50 853.50 439.50 280.50 0.00 0.00 3428.50
1944 0.00 0.00 a 0.00 55.00 586.00 702.50 844.50 800.00 496.50 283.50 31.00 0.00 3799.00
1945 0.00 0.00 122.00 76.00 284.00 556.00 880.00 857.50 448.50 254.00 4.50 0.00 3482.50
1946 0.00 0.00 90.00 308.00 399.50 782.50 997.00 856.50 536.00 152.00 4.00 0.00 4125.50
1947 2.00 0.00 4.00 97.00 344.50 674.50 996.00 1096.00 577.00 443.00 26.00 0.00 4260.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1043.67 a 974.00 766.50 241.00 33.00 0.00 3058.17
1949 0.00 0.00 0.00 224.50 543.53 a 805.00 1014.00 1066.50 493.50 239.22 a 57.00 0.00 4443.25
1950 0.00 0.00 0.00 48.50 379.50 770.00 867.50 814.50 597.00 270.00 20.50 0.00 3767.50
1951 0.00 0.00 0.00 93.50 540.00 559.00 863.50 793.00 402.00 221.13 a 3.00 0.00 a 3475.13
1952 0.00 0.00 0.00 260.50 488.50 799.00 926.50 881.00 652.50 143.50 22.50 0.00 4174.00
1953 0.00 0.00 14.50 68.00 419.00 746.90 a 901.00 940.00 555.50 405.00 54.00 0.00 4103.90
1954 0.00 3.50 3.00 163.00 356.00 738.00 983.50 874.00 535.50 165.00 33.50 0.00 3855.00
1955 0.00 0.00 15.50 320.00 651.00 722.00 1045.00 984.00 556.00 267.50 4.50 0.00 4565.50
1956 0.00 0.00 3.50 32.07 a 455.00 903.00 847.00 874.00 479.50 321.00 24.00 0.00 3939.07
1957 0.00 0.00 7.75 a 190.00 433.50 659.00 1065.00 860.00 454.50 242.50 8.28 a 0.00 3920.53
1958 0.00 21.50 8.00 148.00 538.00 569.48 a 813.00 927.00 577.50 249.03 a 29.50 0.00 3881.02
1959 0.00 0.00 24.50 147.00 468.00 848.50 958.50 988.00 555.50 99.00 3.00 0.00 4092.00
1960 0.00 0.00 0.00 160.50 506.00 700.00 1004.50 952.50 621.00 283.00 10.00 0.00 4237.50
1961 0.00 0.00 23.50 74.50 344.00 818.50 867.50 983.50 464.00 244.50 14.50 0.00 3834.50
1962 0.00 0.00 3.00 159.00 493.50 713.50 839.00 913.00 457.76 a 327.50 12.93 a 3.00 3922.19
1963 0.00 0.00 78.00 196.50 437.00 840.00 972.00 894.50 633.50 504.50 33.50 0.00 4589.50
1964 0.00 0.00 2.50 200.00 535.00 746.50 1016.50 807.50 461.00 226.50 44.50 0.00 4040.00
1965 0.00 0.00 0.00 100.50 466.50 718.00 928.00 867.00 260.50 277.50 23.00 1.50 3642.50
1966 0.00 0.00 38.00 64.50 389.50 744.00 1066.50 814.50 566.00 197.50 0.00 0.00 3880.50
1967 0.00 0.00 51.00 96.00 364.50 660.50 865.50 822.00 568.00 188.00 13.00 0.00 3628.50
1968 0.00 0.00 80.50 139.00 342.50 705.50 884.00 821.00 530.00 213.50 11.50 0.00 3727.50
1969 0.00 0.00 0.00 204.00 500.50 531.50 893.00 996.50 635.00 113.00 26.00 2.00 3901.50
1970 0.00 0.00 0.00 95.50 426.50 844.50 1022.50 942.50 584.00 223.00 0.00 0.00 4138.50
1971 0.00 0.00 17.50 224.50 387.50 805.00 811.50 926.00 548.00 260.50 1.50 0.00 3982.00
1972 0.00 0.00 5.50 96.50 559.00 750.50 866.50 917.00 502.00 163.00 2.50 0.00 3862.50
1973 0.00 0.00 22.50 148.00 468.00 785.00 938.00 1025.50 486.00 333.50 3.50 0.00 4210.00
1974 0.00 0.00 2.00 147.00 365.50 716.00 1084.50 809.50 493.39 b 239.50 8.50 0.00 i 3865.89
1975 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
1976 0.00 z 0.00 z 0.00 z 0.00 z 518.73 a 869.00 1003.76 b 1049.35 a 548.65 d 171.00 13.00 0.00 4173.50
1977 0.00 0.00 32.55 a 355.86 a 808.58 a 842.59 a 1041.00 782.00 518.00 136.00 f 52.00 0.00 a 4432.58
1978 0.00 b 0.00 19.50 g 114.00 594.50 775.56 c 953.00 951.00 742.00 211.50 69.00 0.00 a 4410.56
1979 0.00 0.00 0.00 94.00 335.00 764.50 780.50 f 848.00 666.50 179.00 2.00 0.00 2889.00
1980 0.00 a 0.00 1.03 a 287.50 670.00 798.50 730.00 h 874.50 550.00 224.50 46.50 0.00 3452.53
1981 2.07 a 14.50 29.45 a 272.00 496.50 733.97 a 1020.50 957.00 597.50 210.00 77.00 0.00 4410.48
1982 0.00 0.00 3.50 169.00 535.00 639.50 1046.50 945.00 557.50 189.00 5.50 0.00 4090.50
1983 0.00 4.50 6.50 9.50 s 414.00 768.50 1097.00 1130.00 568.50 134.50 29.00 0.00 z 4152.50
1984 0.00 0.00 1.00 140.50 427.50 743.00 989.50 1014.00 433.50 283.50 11.50 0.00 4044.00
1985 0.00 b 0.00 33.50 281.50 649.50 639.00 977.50 777.50 474.00 170.00 0.00 a 0.00 4002.50
1986 0.00 e 0.00 66.00 145.00 548.50 836.50 963.00 778.00 482.59 a 227.50 3.00 0.00 4050.09
1987 2.50 0.00 10.00 351.00 671.00 901.50 1044.50 813.50 603.00 134.00 45.00 0.00 4576.00
1988 0.00 3.62 a 8.78 a 180.50 692.00 1058.50 1055.55 a 977.50 504.83 a 130.50 4.00 0.00 4615.79
1989 0.00 0.00 a 4.50 149.50 531.13 a 725.00 1102.00 915.00 555.50 254.50 7.00 0.00 4244.13
1990 0.00 0.00 21.50 223.50 447.00 780.50 899.50 891.00 700.00 141.50 42.50 0.00 4147.00
1991 0.00 4.00 14.50 219.00 610.00 868.50 889.50 981.00 544.50 178.50 4.00 0.00 4313.50
1992 0.00 3.00 10.50 127.00 564.00 679.50 727.00 728.50 444.00 223.50 0.00 0.00 3507.00
1993 0.00 0.00 19.50 104.50 462.00 621.50 767.50 859.50 370.00 152.50 0.50 0.00 3357.50
1994 0.00 0.00 8.50 139.00 635.00 810.50 838.00 811.00 630.00 255.50 22.50 0.00 4150.00
1995 0.00 0.00 25.00 45.50 403.00 874.00 921.50 999.50 510.50 163.50 3.50 0.00 3946.00
1996 0.00 0.00 0.00 65.50 418.00 808.00 846.50 882.50 571.00 176.50 3.50 0.00 3771.50
1997 0.00 0.00 2.50 115.00 401.00 851.00 977.50 862.50 649.50 294.00 5.50 0.00 4158.50
1998 0.00 0.00 11.50 235.50 637.50 667.00 994.00 966.50 722.50 210.50 5.50 0.00 4450.50
1999 0.00 4.00 39.50 170.00 537.00 747.00 970.50 899.00 493.50 152.00 57.50 0.00 z 4070.00
2000 0.00 6.00 73.00 148.50 544.00 741.00 961.00 942.00 528.50 285.00 30.00 0.00 4259.00
2001 0.00 0.00 0.00 150.00 540.43 a 768.50 1024.50 944.00 571.50 163.50 47.50 r 0.00 z 4162.43
2002 0.00 z 0.00 z 0.00 z 180.00 375.00 886.00 699.00 j 874.00 636.00 68.50 6.50 w 0.00 z 3019.50
2003 0.00 z 0.00 z 0.00 z 0.00 z 440.00 747.50 932.50 229.00 w 524.00 312.00 4.00 j 0.00 z 2956.00
2004 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 432.50 h 853.50 476.00 j 647.50 72.50 r 0.00 z 0.00 z 1501.00
2005 0.00 z 0.00 z 0.00 z 249.50 414.00 778.50 956.00 863.00 645.00 224.00 0.00 z 0.00 z 4130.00
2006 0.00 z 0.00 z 0.00 z 270.00 489.00 516.00 i 1105.00 902.50 471.50 169.00 34.50 0.00 3441.50
2007 0.00 0.00 50.00 t 186.00 574.00 844.50 1006.00 812.00 569.50 272.00 25.50 0.00 z 4289.50
2008 0.00 z 0.00 z 0.00 z 0.00 z 388.00 667.00 969.00 909.50 528.00 174.00 29.50 p 0.00 z 3635.50
2009 0.00 z 0.00 z 0.00 z 138.75 b 358.50 h 636.00 e 539.00 k 521.50 k 203.50 t 91.21 e 20.50 g 0.00 c 865.96
2010 0.00 j 0.00 g 29.50 292.80 e 465.50 552.00 g 949.00 754.50 g 443.50 294.50 42.50 0.00 j 2517.30
2011 0.00 d 0.00 h 0.00 m 96.50 h 401.34 c 559.00 g 1057.58 e 737.50 g 445.00 f 330.15 a 12.78 c 0.00 c 1801.84
2012 2.98 e 0.00 g 175.84 b 152.00 h 561.21 b 826.73 d 1093.00 538.50 k 515.00 c 128.00 f 5.00 s 0.00 q 3174.76
2013 0.00 c 0.00 e 0.00 d 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 0.18 1.38 21.08 168.66 492.48 761.43 969.12 909.65 552.54 233.97 20.17 0.60 4104.12
S.D. 0.60 3.94 31.81 75.43 112.47 98.21 94.80 83.22 92.92 80.83 18.60 2.82 343.53
SKEW 3.42 3.56 2.58 0.41 0.71 0.28 0.17 0.37 0.08 0.73 0.97 5.42 0.18
MAX 2.98 21.50 175.84 355.86 847.50 1058.50 1306.00 1130.00 766.50 504.50 77.00 17.50 5027.00
MIN 0.00 0.00 0.00 32.07 284.00 531.50 727.00 728.50 260.50 68.50 0.00 0.00 3357.50
NO YRS 74 71 71 75 79 78 79 77 81 80 75 71 60