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
1934 0.00 z 0.00 z 0.00 z 79.50 622.50 825.50 895.00 688.00 464.00 283.50 30.00 0.00 3888.00
1935 0.00 0.00 7.50 101.50 321.00 558.50 1026.00 786.00 451.00 190.50 0.00 b 0.00 b 3442.00
1936 0.00 0.00 8.78 a 63.00 609.00 650.50 1023.50 823.50 619.00 153.00 0.00 a 1.00 3951.28
1937 0.00 0.00 0.00 39.50 454.00 661.00 935.00 924.66 b 512.59 a 137.00 6.00 0.00 3669.74
1938 0.00 0.00 a 54.50 181.50 382.85 a 648.50 832.50 654.00 h 368.50 g 296.05 a 96.43 b 0.00 b 2492.33
1939 0.00 0.00 b 13.84 c 123.89 c 504.86 c 423.50 j 844.23 a 788.00 687.93 a 188.00 21.67 c 3.00 i 3172.42
1940 0.00 c 0.00 e 0.00 47.00 292.00 639.50 819.00 712.50 532.50 238.50 20.17 a 0.00 a 3301.17
1941 0.00 n 0.00 0.00 243.10 a 518.50 715.34 a 827.18 a 719.00 564.00 213.00 29.50 5.00 3834.63
1942 0.00 c 0.00 a 0.00 b 241.03 a 362.46 e 667.50 812.00 759.50 a 424.14 a 264.53 a 21.00 0.00 3552.17
1943 0.00 0.00 17.50 42.00 331.70 a 764.48 a 906.50 804.45 a 396.21 a 186.50 o 0.00 0.00 3262.84
1944 6.20 a 0.00 a 0.00 48.50 519.50 736.61 b 813.50 823.00 518.50 208.00 91.50 0.00 3765.31
1945 0.00 0.00 101.50 120.00 247.50 512.00 757.00 760.00 491.50 156.50 15.00 0.00 3161.00
1946 0.00 0.00 73.50 167.00 344.50 653.50 842.00 729.05 c 480.54 b 242.00 f 12.00 f 4.65 a 3294.74
1947 0.00 0.00 a 0.00 41.00 265.57 a 589.50 836.50 999.00 562.50 465.50 31.50 0.00 3791.07
1948 0.00 0.00 2.50 199.00 392.00 660.00 a 865.00 821.50 609.50 199.00 56.00 0.00 k 3804.50
1949 0.00 0.00 0.00 z 144.31 a 137.50 y 758.00 889.00 811.00 420.00 297.50 27.50 0.00 3347.31
1950 0.00 0.00 0.00 6.00 308.50 628.50 678.50 625.00 473.00 303.36 c 15.50 0.00 3038.36
1951 0.00 0.00 3.50 83.50 532.00 584.50 817.00 670.50 420.50 220.00 4.50 11.00 3347.00
1952 0.00 a 0.00 4.00 207.50 409.50 748.00 888.00 736.00 563.00 88.50 30.00 0.00 3674.50
1953 0.00 a 0.00 4.50 42.50 437.00 732.00 823.05 a 800.66 b 498.21 b 235.00 o 71.90 a 0.00 l 3409.82
1954 0.00 g 5.25 d 0.00 c 170.00 c 303.00 741.92 d 468.00 l 695.95 a 459.00 163.50 29.00 0.00 2567.62
1955 0.00 0.00 5.00 240.50 512.00 655.50 996.65 a 877.30 a 503.28 a 246.50 1.61 b 0.00 4038.33
1956 0.00 0.00 a 0.00 42.00 397.00 750.00 719.50 758.50 417.00 369.00 95.00 0.00 a 3548.00
1957 0.00 0.00 0.00 205.00 394.50 678.50 891.50 737.00 429.00 188.50 18.10 a 0.00 3542.10
1958 0.00 6.00 0.00 132.50 380.00 542.68 b 766.00 759.50 526.00 250.58 a 36.72 a 0.00 a 3399.99
1959 0.00 0.00 0.00 88.50 547.50 720.00 833.00 902.00 553.00 125.50 0.00 0.00 3769.50
1960 0.00 0.00 a 1.00 158.50 413.00 613.50 804.00 838.50 554.50 236.63 a 14.00 4.00 3637.63
1961 0.00 0.00 16.00 42.41 a 333.50 715.50 825.00 838.50 531.21 a 264.50 17.00 0.00 3583.62
1962 0.00 0.00 12.00 127.50 558.00 676.50 774.00 768.00 416.50 296.00 3.50 19.00 3651.00
1963 0.00 0.00 34.00 162.50 356.50 737.00 871.00 702.00 493.00 424.50 19.00 0.00 3799.50
1964 0.00 0.00 0.00 131.00 571.95 a 681.00 901.50 657.00 437.00 169.50 104.50 0.00 3653.45
1965 0.00 0.00 0.00 36.50 357.00 k 623.50 732.50 706.00 324.31 a 221.00 19.50 0.00 2663.31
1966 0.00 m 0.00 18.50 42.00 265.00 728.00 916.00 667.50 503.50 184.50 6.50 0.00 3331.50
1967 0.00 0.00 28.50 94.00 263.50 706.00 765.50 671.00 473.50 183.00 8.50 0.00 3193.50
1968 0.00 0.00 65.50 171.00 339.00 672.00 831.50 778.50 538.50 300.00 6.50 0.00 3702.50
1969 0.00 0.00 0.00 159.00 470.50 484.50 811.00 875.00 521.00 186.50 19.00 0.00 3526.50
1970 0.00 0.00 0.00 166.00 441.50 746.50 931.00 814.50 540.00 278.50 9.50 0.00 3927.50
1971 0.00 0.00 0.00 114.00 300.50 770.00 737.00 694.00 558.50 389.00 16.50 0.00 3579.50
1972 0.00 0.00 2.00 57.50 525.50 628.00 794.00 784.00 389.50 102.00 2.00 0.00 3284.50
1973 0.00 0.00 18.00 90.50 257.50 679.50 813.00 785.50 450.00 309.50 3.00 0.00 3406.50
1974 0.00 0.00 0.00 122.50 274.00 526.00 848.00 678.50 273.50 132.50 28.00 0.00 2883.00
1975 0.00 0.00 0.00 26.00 513.00 643.00 866.50 717.00 322.00 206.00 72.50 0.00 3366.00
1976 0.00 0.00 9.50 144.50 304.00 728.50 820.50 702.00 361.00 118.50 0.00 a 0.00 3188.50
1977 0.00 0.00 37.50 232.50 656.50 594.50 866.00 579.50 451.50 136.00 54.00 0.00 3608.00
1978 0.00 0.00 2.00 53.00 450.50 603.50 724.00 750.00 545.50 152.00 41.00 0.00 3321.50
1979 0.00 0.00 2.00 86.50 253.00 590.00 800.50 665.50 467.00 117.50 12.00 0.00 2994.00
1980 0.00 0.00 0.00 136.00 490.50 599.00 818.00 740.50 121.00 n 89.00 6.00 0.00 2879.00
1981 0.00 6.00 17.50 101.00 308.00 614.00 746.00 740.00 352.50 73.00 20.50 0.00 2978.50
1982 0.00 0.00 1.50 47.00 493.50 444.00 838.00 683.50 411.50 209.00 14.50 11.00 3153.50
1983 0.00 0.00 13.00 48.00 192.50 615.50 928.50 861.00 502.50 156.00 13.00 p 0.00 z 3317.00
1984 0.00 h 0.00 0.00 125.00 281.50 691.50 724.50 786.37 a 347.50 237.50 2.50 0.00 3196.37
1985 0.00 0.00 6.00 183.00 453.50 332.00 k 663.50 612.00 408.00 27.50 q 7.00 0.00 2333.00
1986 0.00 0.00 23.25 a 165.00 465.00 589.50 789.00 585.50 407.00 98.50 2.50 0.00 3125.25
1987 0.00 0.00 33.00 186.00 369.00 636.00 739.00 608.00 500.00 63.00 28.50 0.00 3162.50
1988 0.00 0.00 0.00 72.50 501.00 748.50 906.00 837.00 469.00 84.00 5.00 0.00 a 3623.00
1989 0.00 0.00 16.50 70.00 395.00 585.50 852.00 749.50 455.00 222.00 0.00 0.00 3345.50
1990 0.00 0.00 32.00 213.00 299.50 637.50 780.50 276.00 s 210.00 m 112.00 51.00 0.00 2125.50
1991 0.00 0.00 6.50 139.50 512.00 0.00 z 789.50 823.00 399.00 119.50 0.00 0.00 m 2789.00
1992 0.00 0.00 0.00 47.50 412.50 534.83 a 639.50 632.00 399.00 178.50 0.00 0.00 2843.83
1993 0.00 0.00 0.00 m 31.00 348.00 563.50 775.00 754.50 276.50 105.50 0.00 0.00 2854.00
1994 0.00 0.00 2.00 k 76.00 390.50 714.50 759.00 680.50 563.00 145.00 m 19.50 0.00 3203.00
1995 0.00 0.00 22.00 14.50 334.50 807.50 817.50 875.50 417.00 197.50 0.00 n 0.00 3486.00
1996 0.00 0.00 3.00 24.50 294.50 667.00 700.00 764.50 478.50 173.00 0.00 0.00 3105.00
1997 0.00 0.00 a 0.00 l 57.50 196.00 731.00 774.50 646.50 512.00 232.00 9.00 0.00 3158.50
1998 0.00 0.50 0.00 l 170.50 601.50 643.00 855.50 843.50 637.50 217.50 19.00 15.00 4003.50
1999 0.00 0.00 3.50 135.00 501.00 682.00 911.00 713.50 468.50 126.50 59.00 0.00 3600.00
2000 0.00 9.00 50.00 101.50 466.00 607.00 787.50 780.00 479.00 277.97 a 51.00 0.00 3608.97
2001 0.00 0.00 0.00 a 133.50 469.50 688.50 846.50 865.00 485.50 170.00 97.00 5.00 3760.50
2002 0.00 0.00 0.00 102.00 252.00 730.00 971.50 799.50 577.50 105.00 0.00 l 0.00 3537.50
2003 0.00 0.00 38.00 114.00 366.00 630.00 831.00 894.00 546.50 185.50 2.50 0.00 3607.50
2004 0.00 0.00 4.00 84.00 h 285.00 571.50 766.00 611.50 616.50 185.00 11.50 q 0.00 3039.50
2005 0.00 0.00 23.25 c 183.50 349.50 823.00 904.00 841.50 642.00 271.00 26.00 0.00 4063.75
2006 0.00 0.00 6.50 l 217.50 460.50 733.00 994.50 818.50 443.50 124.00 23.00 0.00 3814.50
2007 0.00 0.00 32.50 j 131.50 500.00 727.50 836.00 792.50 519.50 305.50 5.50 0.00 3818.00
2008 0.00 0.00 0.00 85.50 261.00 650.00 824.00 761.50 551.00 166.00 53.50 0.00 3352.50
2009 0.00 0.00 10.50 96.50 363.00 632.50 669.50 692.00 601.50 73.00 42.00 0.00 3180.50
2010 0.00 0.00 14.50 j 239.00 511.50 673.50 896.50 859.00 386.00 242.00 31.50 0.00 c 3839.00
2011 0.00 z 0.00 z 0.00 z 0.50 y 352.00 638.00 943.00 783.27 a 455.69 a 266.50 16.67 c 0.00 3455.12
2012 0.00 0.00 117.00 k 106.00 493.50 736.67 c 969.27 a 750.00 442.00 4.00 y 0.00 z 0.00 z 3497.43
Period of Record Statistics
MEAN 0.08 0.35 12.45 115.20 401.36 662.03 830.97 758.04 479.97 201.63 24.63 1.04 3465.49
S.D. 0.73 1.50 19.80 63.33 108.67 77.06 82.10 84.33 83.57 83.91 26.60 3.41 298.79
SKEW 8.37 4.39 2.35 0.30 0.21 -0.29 0.14 0.08 -0.10 0.71 1.48 3.74 -0.12
MAX 6.20 9.00 101.50 243.10 656.50 825.50 1026.00 999.00 687.93 465.50 104.50 19.00 4063.75
MIN 0.00 0.00 0.00 6.00 192.50 444.00 639.50 579.50 273.50 63.00 0.00 0.00 2843.83
NO YRS 73 77 68 77 77 76 78 77 76 73 73 73 49