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
1955 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 598.00 f 548.00 271.25 a 61.50 i 22.70 c 841.95
1956 0.00 e 21.46 d 71.00 j 142.50 f 232.00 m 615.00 679.00 725.00 497.07 a 297.00 117.50 160.37 e 3112.39
1957 25.46 c 61.60 c 27.00 f 233.00 f 486.91 b 639.83 a 720.20 c 686.81 b 570.00 a 145.50 82.50 f 11.48 d 3347.79
1958 0.00 j 0.00 r 0.00 p 131.50 g 507.33 e 606.21 a 737.00 687.17 a 512.50 284.34 b 120.50 l 1.50 i 3334.55
1959 11.50 i 22.30 a 64.77 c 287.68 b 512.00 575.50 696.50 755.50 543.10 a 299.15 a 62.00 h 26.83 e 3783.32
1960 11.92 e 0.00 o 26.50 x 330.00 a 350.50 593.00 680.50 723.00 537.50 350.96 c 103.80 e 20.00 g 3681.19
1961 0.00 g 78.40 c 112.00 113.65 d 291.50 542.00 676.00 669.50 578.00 247.50 133.50 22.98 b 3465.04
1962 31.00 c 45.50 27.00 152.07 a 621.00 574.50 696.50 686.00 460.00 348.50 24.31 a 32.50 3698.88
1963 9.30 a 8.30 a 134.50 255.50 621.00 562.50 634.50 685.50 492.00 380.50 85.00 0.00 3868.60
1964 11.50 g 1.16 d 53.98 b 241.00 496.00 a 646.50 660.50 628.50 481.00 171.00 161.50 52.00 3593.14
1965 32.07 b 36.50 48.50 295.00 556.00 540.50 688.00 686.00 490.00 183.50 64.14 a 26.00 3646.21
1966 11.33 e 3.23 b 74.00 162.41 a 376.50 577.00 688.00 641.00 433.50 218.03 a 67.50 b 22.14 c 3274.65
1967 41.85 a 11.50 156.00 267.00 320.85 a 511.50 571.00 577.50 347.00 224.75 a 23.00 68.50 3120.45
1968 22.39 d 0.00 b 128.77 e 192.32 b 312.67 b 607.00 688.72 a 765.00 439.00 249.07 b 95.36 b 0.52 a 3500.81
1969 10.00 6.46 b 7.00 g 221.90 a 442.27 a 641.50 765.00 627.00 470.50 297.00 28.50 2.38 e 3512.51
1970 9.50 4.00 45.50 259.00 487.22 a 566.00 721.00 705.50 627.00 286.00 53.50 62.50 3826.72
1971 1.50 22.00 38.50 196.50 339.50 650.00 647.00 657.50 559.50 368.00 105.00 120.26 b 3705.26
1972 24.50 13.38 c 58.00 245.00 335.00 472.00 703.00 661.50 566.00 185.50 62.50 83.00 3409.38
1973 16.00 1.50 127.00 149.00 331.00 599.00 718.00 661.50 573.50 338.00 150.50 28.42 a 3693.42
1974 102.82 a 18.00 140.50 202.76 a 416.50 454.50 676.50 654.50 441.00 264.50 122.00 20.48 c 3514.06
1975 31.00 a 25.93 a 44.00 203.00 517.18 a 579.50 664.50 754.00 481.03 a 374.50 189.00 29.81 e 3893.45
1976 1.00 74.50 158.50 284.50 323.50 562.50 656.68 a 640.50 432.50 133.50 20.69 a 11.00 3299.37
1977 0.00 19.50 89.00 292.50 486.00 581.00 792.50 719.00 569.50 159.00 127.50 14.50 3850.00
1978 0.00 0.00 a 67.00 248.00 374.00 624.50 722.00 724.50 607.00 234.50 158.00 41.00 3800.50
1979 4.50 29.17 d 92.50 164.50 404.50 499.50 622.00 702.00 481.00 212.00 102.00 33.50 3347.17
1980 2.00 24.00 25.50 184.00 455.00 571.55 a 799.50 790.50 605.50 200.50 85.00 c 51.67 a 3794.72
1981 0.50 20.72 c 26.87 a 308.00 354.00 695.00 740.00 623.50 499.50 203.00 97.00 3.00 3571.09
1982 8.50 9.00 120.50 109.00 553.00 567.50 722.50 658.00 433.50 267.50 115.00 84.00 3648.00
1983 0.00 c 1.50 67.50 118.00 351.00 549.50 747.50 772.50 482.50 249.50 95.00 11.50 3446.00
1984 0.00 26.50 59.42 a 135.50 338.00 642.00 644.00 688.50 480.50 434.50 58.00 138.00 3644.92
1985 13.00 30.15 b 104.00 306.00 417.00 578.50 670.00 624.00 493.50 386.00 259.50 28.50 3910.15
1986 14.00 49.00 101.50 299.00 406.74 b 681.00 803.00 633.00 545.00 290.00 137.00 11.76 b 3971.00
1987 7.50 0.52 a 52.70 a 178.33 c 538.50 644.00 783.50 760.00 496.50 168.50 132.00 37.50 3799.55
1988 0.50 13.00 76.50 187.50 386.50 628.50 741.50 769.00 472.50 117.50 73.50 10.50 3477.00
1989 42.50 79.00 155.50 234.00 310.00 614.00 696.50 668.50 491.50 338.00 84.00 3.00 3716.50
1990 17.50 62.50 128.00 195.00 403.50 598.50 704.00 709.00 522.00 315.00 148.00 55.50 3858.50
1991 9.50 37.00 107.00 258.50 529.50 572.00 746.50 661.00 487.50 288.00 98.00 61.00 3855.50
1992 3.50 25.50 83.00 235.50 324.50 481.00 739.00 570.50 519.00 224.00 90.50 29.50 3325.50
1993 15.50 1.00 31.53 b 143.50 427.50 627.50 859.00 714.00 521.00 272.50 87.00 6.00 3706.03
1994 0.50 9.50 60.50 315.50 0.00 z 647.00 688.50 623.50 441.50 239.00 178.97 a 46.50 3250.97
1995 19.00 25.00 118.00 249.50 420.50 548.50 758.50 748.50 466.00 282.10 a 44.50 18.00 3698.10
1996 1.55 a 64.00 28.50 198.50 509.50 599.00 672.50 658.00 438.50 262.50 38.00 47.50 3518.05
1997 24.05 b 21.50 116.00 97.50 267.50 464.00 746.50 612.25 a 501.00 254.50 17.00 4.02 d 3125.82
1998 40.96 c 5.25 d 88.19 b 158.50 488.50 626.50 729.00 715.50 592.50 350.50 111.72 a 92.50 3999.63
1999 47.50 g 40.83 d 14.50 h 252.41 a 384.50 556.50 776.00 745.50 505.50 233.50 149.00 41.85 a 3685.60
2000 29.00 41.00 135.00 145.00 538.50 665.50 697.00 674.00 504.00 377.00 112.50 0.00 3918.50
2001 1.00 37.00 12.06 d 276.50 446.00 600.00 681.00 721.02 b 457.50 239.50 202.00 106.50 3780.07
2002 72.52 c 21.50 117.50 256.50 386.00 632.50 777.50 770.00 594.50 332.50 44.48 a 4.98 c 4010.48
2003 3.44 d 3.65 e 116.52 b 241.00 378.00 561.00 726.00 752.00 491.00 200.50 233.00 2.50 j 3706.11
2004 30.47 b 1.16 d 101.27 a 256.73 d 543.50 612.00 700.00 633.00 509.42 d 344.50 185.17 a 21.24 d 3938.46
2005 83.38 b 13.00 86.44 e 234.11 b 337.00 603.00 802.00 777.00 637.50 374.67 b 202.78 c 5.50 f 4150.88
2006 30.00 3.50 d 80.08 a 312.00 349.00 610.50 776.50 777.50 446.00 229.50 139.00 69.75 a 3823.33
2007 53.45 b 5.19 a 198.83 b 208.89 c 494.50 646.50 675.50 907.00 613.00 376.13 a 76.11 c 87.66 b 4342.75
2008 23.25 a 26.31 b 45.50 225.56 c 378.50 710.50 731.50 689.50 569.50 255.00 92.00 58.38 a 3805.50
2009 26.19 b 26.00 122.40 b 221.90 a 418.00 670.50 642.00 740.50 515.50 287.50 125.00 15.50 l 3795.48
2010 2.50 h 0.00 l 38.23 a 334.50 525.50 759.50 855.00 809.00 632.00 299.50 107.07 a 0.00 j 4360.30
2011 14.39 c 26.83 d 70.78 a 306.72 a 477.00 733.50 846.00 754.00 536.50 224.00 136.03 a 56.83 a 4182.60
2012 18.71 b 35.21 a 274.35 a 280.86 a 551.00 602.00 828.00 701.00 526.55 a 150.50 k 0.00 z 0.00 z 3817.69
Period of Record Statistics
MEAN 19.46 23.89 90.39 226.43 429.03 598.60 719.48 699.56 513.19 270.89 108.46 40.78 3698.02
S.D. 21.74 21.13 49.57 62.15 88.44 61.86 59.88 62.31 59.71 72.04 54.64 36.90 264.73
SKEW 1.90 1.04 1.06 -0.25 0.25 -0.05 0.34 0.47 0.11 0.04 0.50 1.28 -0.21
MAX 102.82 79.00 274.35 334.50 621.00 759.50 859.00 907.00 637.50 434.50 259.50 160.37 4342.75
MIN 0.00 0.00 12.06 97.50 267.50 454.50 571.00 570.50 347.00 117.50 17.00 0.00 3120.45
NO YRS 51 54 51 54 55 57 57 57 58 57 53 51 42