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
1913 0.00 z 0.00 z 0.00 z 0.00 z 247.00 h 729.50 753.30 a 760.57 b 477.50 238.81 d 30.52 a 0.00 c 2990.20
1914 0.00 a 0.00 0.00 70.50 455.70 a 593.28 a 878.00 670.00 509.00 352.50 33.50 0.00 a 3562.48
1915 0.00 0.00 0.00 b 276.50 250.58 a 506.00 671.00 583.50 478.50 167.00 25.50 0.00 2958.58
1916 0.00 z 0.00 h 0.50 64.00 355.00 567.50 996.50 787.50 430.00 156.00 17.00 0.00 3374.00
1917 0.00 a 0.00 0.00 33.50 186.50 516.21 a 802.50 615.50 400.50 30.47 b 16.50 0.00 b 2601.67
1918 0.00 a 0.00 28.93 a 50.17 a 447.12 e 614.50 832.50 796.50 288.00 e 185.00 41.00 0.00 3283.72
1919 0.00 0.00 a 12.00 67.00 377.00 823.50 853.00 688.00 532.50 125.07 b 5.50 0.00 a 3483.57
1920 0.00 0.00 28.00 22.24 a 365.00 699.50 700.50 710.50 573.00 393.00 0.00 0.00 3491.74
1921 0.00 0.00 6.20 a 198.10 a 460.50 819.00 960.50 721.00 507.50 160.00 g 0.00 0.00 z 3672.80
1922 0.00 z 0.00 z 3.62 a 46.80 e 578.00 609.00 686.65 a 698.00 565.18 b 258.33 a 46.20 e 0.00 b 3491.78
1923 0.00 0.00 0.00 100.00 352.00 790.50 887.50 604.00 488.04 b 170.00 10.20 e 0.00 i 3402.24
1924 0.00 z 0.00 0.00 c 53.79 a 98.50 g 528.50 676.00 669.71 b 396.35 d 355.95 c 19.66 a 0.00 b 2699.95
1925 0.00 a 0.00 i 13.50 198.50 292.84 c 703.00 775.53 b 861.28 a 493.00 f 86.36 c 10.50 0.00 j 2941.51
1926 0.00 d 0.00 a 4.28 b 59.40 e 493.86 b 548.00 804.45 a 434.00 n 327.00 h 163.78 a 5.17 a 0.00 g 2078.94
1927 0.00 z 0.00 a 0.00 z 65.50 h 332.98 b 556.00 717.00 621.03 a 626.67 c 0.00 z 1.73 d 0.00 2855.41
1928 0.00 g 0.00 c 3.00 i 26.67 c 0.00 z 211.00 r 804.00 734.91 b 383.33 c 140.00 g 21.00 e 0.00 g 1969.91
1929 0.00 z 0.00 p 0.00 i 130.00 c 104.00 l 463.00 h 828.14 c 735.73 a 0.00 z 0.00 z 0.00 z 0.00 j 1693.88
1930 0.00 b 11.50 f 0.00 d 128.65 d 425.45 b 547.50 g 837.55 c 793.17 b 374.50 g 134.00 p 107.31 d 0.00 r 2292.14
1931 0.00 z 0.00 a 0.00 d 176.50 i 79.50 p 558.00 f 894.19 b 696.90 e 351.00 p 0.00 z 27.00 f 0.00 z 1591.09
1932 0.00 n 0.00 g 0.00 f 26.00 m 293.39 c 721.50 783.55 b 717.17 e 94.00 p 89.79 b 2.22 c 0.00 z 2607.63
1933 0.00 a 0.00 k 0.00 d 39.11 b 116.50 n 844.14 a 733.50 f 609.50 424.50 i 97.50 l 0.00 z 0.00 d 1492.75
1934 0.00 n 0.00 c 0.00 z 0.00 z 290.50 o 825.50 911.40 a 679.00 478.20 e 277.34 c 10.00 l 0.00 g 3171.44
1935 0.00 z 0.00 d 6.41 b 120.54 b 304.00 569.00 1006.00 888.67 d 484.20 e 104.00 r 0.00 g 0.00 b 3378.82
1936 0.00 g 0.00 c 0.50 o 35.50 h 491.98 d 612.86 b 740.50 f 774.00 630.00 a 113.00 l 0.00 i 0.00 d 2508.84
1937 0.00 c 0.00 e 0.00 d 57.00 483.60 a 516.50 g 931.03 a 762.50 g 498.33 c 176.24 d 3.00 m 0.00 o 2146.21
1938 0.00 b 0.00 c 44.36 b 176.50 g 411.50 625.86 a 644.50 h 860.25 c 507.00 320.00 68.00 0.00 2836.97
1939 0.00 0.00 21.00 91.00 519.00 675.50 884.00 798.77 a 542.00 199.00 11.50 0.00 a 3741.77
1940 0.00 a 0.00 0.00 51.50 291.50 619.00 850.00 736.50 566.50 227.00 15.58 d 0.00 3357.58
1941 0.00 d 0.00 b 0.00 227.59 a 513.16 c 0.00 z 0.00 z 0.00 z 277.00 n 188.67 b 24.83 a 7.00 k 954.25
1942 0.00 0.00 0.00 j 235.71 b 389.00 698.50 797.39 d 781.72 a 485.56 c 275.90 a 16.20 e 0.00 d 3679.98
1943 0.00 a 0.00 b 12.29 b 69.00 316.64 c 754.29 b 768.50 f 855.00 423.50 261.90 b 0.00 0.00 j 2692.62
1944 4.50 g 0.00 j 0.00 v 0.00 z 629.76 d 486.00 h 0.00 z 0.00 z 0.00 z 0.00 z 25.50 o 0.00 629.76
1945 0.00 0.00 119.00 130.50 0.00 z 471.50 h 818.92 a 645.50 g 503.00 145.00 3.50 0.00 z 1719.92
1946 0.00 0.00 b 83.00 188.00 385.00 670.34 a 846.00 698.50 478.27 d 282.62 a 11.50 4.00 3647.23
1947 0.00 0.00 1.03 a 53.04 b 195.50 i 607.00 859.73 a 1033.00 551.38 a 219.00 m 29.48 a 0.00 q 3134.66
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 681.00 867.50 881.50 670.00 250.50 54.50 0.00 3405.00
1949 0.00 0.00 0.52 a 179.50 475.50 815.50 886.00 846.50 383.50 283.00 17.00 0.00 3887.02
1950 0.00 0.00 0.00 12.50 333.50 680.50 735.50 642.50 483.00 295.50 8.00 0.00 3191.00
1951 0.00 0.00 0.00 69.50 533.50 577.50 794.50 644.00 365.17 a 186.50 0.50 11.00 3182.17
1952 0.00 0.00 3.50 219.00 384.00 695.50 853.00 715.00 516.21 a 80.50 14.48 a 0.00 3481.19
1953 0.00 0.00 5.00 35.00 414.00 700.50 792.00 829.50 505.18 b 369.50 75.50 0.00 3726.18
1954 0.00 0.00 a 0.00 a 148.00 280.03 a 733.50 814.00 688.00 415.86 a 157.00 27.00 0.00 3263.40
1955 0.00 0.00 5.00 244.50 525.45 a 663.50 963.00 871.50 464.42 d 160.00 i 0.00 0.00 z 3737.37
1956 0.00 0.00 0.00 31.00 376.65 a 744.00 675.50 717.00 377.59 a 372.00 85.50 0.00 3379.24
1957 0.00 0.00 0.00 217.50 368.00 641.50 866.00 728.50 415.50 165.00 15.00 0.00 3417.00
1958 0.00 4.00 0.00 132.00 376.13 a 514.00 757.00 744.50 508.50 220.62 a 28.00 0.00 3284.75
1959 0.00 0.00 a 0.50 78.62 a 526.50 716.00 807.50 888.50 527.50 120.00 0.00 0.00 a 3665.12
1960 0.00 0.00 1.00 135.00 397.00 584.00 764.50 811.50 509.00 230.95 a 6.72 a 3.00 3442.67
1961 0.00 0.00 11.00 48.00 324.00 686.00 787.50 812.00 481.50 249.00 19.50 0.00 3418.50
1962 0.00 0.00 10.00 112.00 545.08 a 648.50 734.00 742.50 399.50 280.60 b 4.66 a 16.00 3492.84
1963 0.00 0.00 32.00 153.62 a 359.00 738.00 874.00 704.50 0.00 z 473.50 31.00 0.00 a 3365.62
1964 0.00 0.00 0.00 163.00 555.00 685.00 898.50 663.50 452.50 199.00 99.50 0.00 3716.00
1965 0.00 0.00 0.00 45.00 518.22 a 634.00 725.50 723.50 341.00 218.50 23.00 0.00 3228.72
1966 0.00 0.00 16.50 40.00 286.50 743.50 941.00 702.00 482.00 171.00 2.50 0.00 3385.00
1967 0.00 0.00 26.00 97.50 244.00 671.00 747.00 638.00 480.50 173.00 8.50 0.00 3085.50
1968 0.00 0.00 64.00 154.50 344.50 638.00 793.00 769.00 518.00 295.02 a 10.50 0.00 3586.52
1969 0.00 0.00 0.00 145.50 458.50 440.69 a 795.67 a 861.00 489.00 167.00 20.50 0.00 3377.86
1970 0.00 0.00 0.00 168.00 405.50 749.00 905.00 796.00 512.50 263.50 3.00 0.00 3802.50
1971 0.00 0.00 0.00 106.00 305.00 794.00 698.02 a 675.50 533.00 364.00 11.50 0.00 3487.02
1972 0.00 0.00 1.03 a 64.50 565.50 631.00 774.50 764.00 438.50 156.50 3.50 0.00 3399.03
1973 0.50 0.00 24.00 125.00 320.00 717.50 827.50 844.50 477.00 364.00 3.50 0.00 3703.50
1974 0.00 0.00 4.50 159.50 334.50 560.00 909.00 715.50 342.00 207.50 38.79 a 0.00 3271.29
1975 0.00 0.00 0.50 34.50 562.50 682.50 890.50 775.00 377.00 288.50 97.50 0.00 3708.50
1976 0.00 2.50 17.50 163.50 382.00 774.00 840.00 786.50 456.50 135.00 2.00 0.00 3559.50
1977 0.00 0.00 44.50 296.00 731.00 616.00 888.50 613.50 466.00 175.00 64.66 a 0.00 3895.16
1978 0.00 0.00 3.62 a 62.50 521.00 650.00 756.50 803.50 605.00 177.00 43.50 0.00 3622.62
1979 0.00 0.00 4.13 a 82.00 303.00 615.00 824.00 713.53 b 533.50 147.25 a 14.50 0.00 3236.92
1980 0.00 0.00 0.50 199.50 536.82 a 611.50 852.50 a 769.50 457.00 98.50 13.50 0.00 3539.32
1981 0.00 10.50 29.50 156.50 378.00 660.52 a 807.50 805.00 432.00 143.50 50.50 0.00 3473.52
1982 0.00 0.00 3.00 89.00 597.00 482.00 869.50 696.00 451.00 236.50 22.00 12.00 3458.00
1983 0.00 0.00 8.50 65.00 0.00 z 673.00 973.50 878.00 530.50 190.00 23.50 0.00 3342.00
1984 0.00 2.50 0.00 136.00 351.50 718.00 788.00 840.00 407.50 285.50 12.50 0.00 a 3541.50
1985 0.00 0.00 11.22 b 226.50 526.00 561.00 772.50 675.00 485.00 166.00 7.00 0.00 3430.22
1986 0.00 a 0.00 43.00 204.50 547.00 647.00 881.50 643.00 478.00 184.50 4.00 0.00 3632.50
1987 0.00 0.00 59.00 285.50 525.00 769.00 893.00 749.00 555.00 61.50 36.50 0.00 3933.50
1988 0.00 0.00 a 0.00 b 125.00 611.00 777.50 933.50 0.00 z 462.41 a 49.00 2.00 0.00 2960.41
1989 0.00 a 0.00 18.00 69.00 399.50 569.00 839.50 724.50 427.50 220.50 0.00 0.00 3267.50
1990 0.00 0.00 30.50 226.00 277.00 646.00 683.50 745.50 405.00 102.00 59.50 0.00 z 3175.00
1991 0.00 z 0.00 18.50 171.00 8.50 x 758.00 760.50 815.00 373.50 88.50 0.00 0.00 2985.00
1992 0.00 0.00 0.00 73.00 440.00 533.00 576.50 639.00 405.50 156.50 0.00 0.00 2823.50
1993 0.00 0.00 14.00 36.00 344.50 525.50 782.50 758.00 273.50 84.00 0.00 0.00 2818.00
1994 0.00 0.00 3.50 69.00 405.50 668.00 717.50 671.00 511.00 201.50 20.00 0.00 3267.00
1995 0.00 0.00 19.50 9.00 291.50 796.00 806.00 869.50 397.50 191.00 0.00 0.00 3380.00
1996 0.00 0.00 a 1.00 24.50 327.00 673.50 660.00 715.50 435.50 148.80 a 0.50 0.00 2986.30
1997 0.00 0.00 4.50 76.50 179.50 725.50 750.50 627.50 493.00 221.50 7.50 0.00 3086.00
1998 0.00 a 0.00 29.50 183.00 610.00 654.50 792.50 824.00 613.50 222.00 10.50 4.13 a 3943.63
1999 0.00 a 0.00 17.00 163.00 541.50 680.50 909.00 717.50 452.00 111.00 51.00 0.00 3642.50
2000 0.00 9.00 53.00 81.50 475.00 577.50 772.50 759.00 437.50 210.80 a 51.50 0.00 a 3427.30
2001 0.00 0.00 0.00 165.00 429.50 712.00 819.50 851.00 454.66 a 140.00 95.00 0.50 3667.16
2002 0.00 0.00 0.00 113.00 273.50 726.00 949.00 781.50 563.50 56.50 2.50 0.00 3465.50
2003 0.00 0.00 32.50 101.50 356.50 648.50 788.50 864.50 528.50 189.88 c 2.50 0.00 3512.88
2004 0.00 0.00 b 4.50 81.21 a 302.00 552.50 752.50 583.00 635.50 190.00 13.50 0.00 a 3114.71
2005 0.00 1.50 27.50 205.50 331.00 818.50 875.50 767.50 609.00 230.50 21.60 e 0.00 3888.10
2006 0.00 0.00 11.00 232.00 427.50 661.00 905.00 756.00 351.00 100.00 26.50 0.00 3470.00
2007 0.00 a 0.00 l 70.78 a 150.00 539.00 751.00 830.50 807.50 565.00 305.50 9.50 0.00 4028.78
2008 0.00 0.00 0.00 94.50 278.50 627.50 812.00 752.00 564.00 166.00 61.50 0.00 3356.00
2009 0.00 0.00 1.50 109.50 338.50 595.50 592.50 701.00 594.00 66.50 38.50 0.00 3037.50
2010 0.00 0.00 a 46.50 223.45 a 503.50 650.00 707.50 f 878.50 371.50 215.50 44.50 0.00 2933.45
2011 0.00 c 3.63 a 2.50 66.00 362.00 631.07 b 956.02 c 790.00 468.21 b 281.14 b 17.00 0.00 3577.57
2012 0.00 0.00 a 213.50 94.00 520.00 703.45 a 941.00 719.41 b 390.52 a 107.00 i 0.00 z 0.00 z 3581.88
Period of Record Statistics
MEAN 0.01 0.38 15.92 118.86 414.56 663.39 820.18 749.63 476.77 203.18 23.22 0.62 3433.82
S.D. 0.05 1.59 29.87 70.25 110.51 86.83 86.57 83.74 78.11 87.34 25.48 2.56 276.88
SKEW 9.06 5.05 4.01 0.54 0.30 -0.08 -0.27 0.30 -0.01 0.48 1.55 4.66 -0.53
MAX 0.50 10.50 213.50 296.00 731.00 844.14 1006.00 1033.00 670.00 473.50 107.31 16.00 3943.63
MIN 0.00 0.00 0.00 9.00 179.50 440.69 576.50 583.00 273.50 30.47 0.00 0.00 2601.67
NO YRS 85 89 90 91 88 92 93 94 90 87 91 82 64