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
1909 0.00 z 0.00 z 0.00 z 13.00 w 141.88 e 547.24 a 763.50 798.50 470.00 170.50 25.71 b 0.00 c 2917.34
1910 0.00 b 0.00 d 71.09 b 69.50 219.50 707.68 b 849.00 759.50 480.00 a 272.80 a 1.61 b 0.00 3430.67
1911 0.00 0.00 b 21.38 b 33.00 315.00 570.00 a 521.00 i 670.50 409.50 164.41 c 0.00 k 0.00 b 2183.79
1912 0.00 d 0.00 b 0.00 e 44.48 a 191.17 a 542.07 a 705.52 b 578.00 467.31 d 264.69 e 7.50 d 0.00 p 2800.74
1913 0.00 a 0.00 a 0.50 102.32 b 182.79 b 570.50 652.03 a 568.50 f 447.41 a 132.00 h 35.00 1.79 e 1992.35
1914 0.00 j 0.00 2.67 b 14.00 438.00 505.00 779.00 708.50 504.50 281.00 22.00 0.00 3254.67
1915 0.00 0.00 0.00 172.00 137.50 423.33 c 621.00 646.50 481.50 148.00 17.68 b 0.00 a 2647.51
1916 0.00 a 0.00 a 0.00 61.00 208.00 401.50 864.90 a 809.62 a 405.00 160.00 24.00 0.00 b 2934.02
1917 0.00 0.00 0.00 0.00 160.50 331.00 744.00 624.50 411.50 38.50 30.00 0.00 2340.00
1918 0.00 a 0.00 b 51.15 a 16.00 225.00 528.00 708.00 768.00 307.50 182.00 40.00 1.50 2827.15
1919 0.00 0.00 0.00 a 57.93 a 294.00 463.00 827.50 788.95 a 331.00 h 112.00 0.00 a 0.00 c 2543.38
1920 0.00 a 0.00 14.00 12.50 277.50 513.50 755.00 749.00 603.00 362.50 1.00 0.00 a 3288.00
1921 0.00 0.00 9.00 97.00 289.50 664.50 995.62 a 747.10 a 566.50 198.00 3.50 0.00 3570.72
1922 0.00 0.00 0.00 22.00 255.00 592.50 730.50 780.68 a 542.50 233.50 53.33 c 0.00 3210.02
1923 0.00 0.00 0.00 58.50 h 252.00 616.50 770.50 682.50 531.00 232.50 36.00 3.50 3124.50
1924 0.00 0.00 0.00 26.50 254.50 542.00 751.00 723.00 416.38 a 324.50 27.50 0.00 3065.38
1925 0.00 a 3.00 21.00 95.00 272.50 608.50 828.00 879.00 547.50 60.97 a 13.45 a 0.00 3328.91
1926 0.00 d 0.00 11.50 109.14 a 222.50 518.50 668.50 768.50 379.50 152.00 2.50 0.00 2832.64
1927 0.00 0.00 4.50 65.00 134.00 505.50 713.50 645.50 535.50 206.50 5.50 0.00 2815.50
1928 0.00 0.00 21.50 44.00 401.00 471.50 741.00 771.50 406.00 201.50 36.50 0.00 a 3094.50
1929 0.00 a 0.00 9.00 65.50 215.50 539.50 841.00 807.00 458.50 242.50 13.00 0.00 3191.50
1930 0.00 a 4.67 a 0.00 69.00 255.00 733.00 833.50 908.00 500.00 162.00 44.48 a 1.00 3510.65
1931 0.00 0.50 0.00 131.00 324.47 a 552.93 a 904.17 a 772.00 611.00 383.50 53.00 0.00 z 3732.56
1932 0.00 b 5.70 a 0.00 27.50 342.55 a 562.00 811.50 865.00 523.00 138.50 18.00 0.00 a 3293.75
1933 0.00 a 0.00 b 0.00 42.50 257.50 717.50 808.50 773.00 602.00 159.00 1.00 0.00 3361.00
1934 0.00 0.00 2.07 a 42.32 b 404.00 534.50 796.50 700.50 394.00 300.50 28.00 0.00 b 3202.39
1935 0.00 a 0.00 0.00 18.50 264.50 511.00 869.00 791.00 428.50 193.00 0.00 0.00 3075.50
1936 0.00 0.00 0.00 43.00 336.50 583.50 922.00 866.50 565.00 148.00 9.00 0.00 b 3473.50
1937 0.00 0.50 1.50 27.50 281.00 626.00 833.50 953.50 522.00 156.00 9.50 0.00 3411.00
1938 0.00 0.00 33.07 a 118.50 232.00 637.50 b 772.00 927.00 564.50 321.50 42.00 0.00 3648.07
1939 0.00 0.00 c 16.50 58.50 308.50 480.50 859.50 823.00 538.00 206.50 25.00 11.00 3327.00
1940 0.00 0.00 0.00 24.00 234.50 543.00 839.00 777.00 624.00 330.00 18.50 0.50 3390.50
1941 0.00 0.00 0.00 144.50 414.50 588.50 965.00 828.00 555.50 268.00 15.50 17.50 3797.00
1942 4.50 0.00 0.00 188.00 259.00 484.00 774.50 797.50 470.00 277.00 20.69 a 0.00 3275.19
1943 0.00 0.00 12.00 86.00 311.00 521.50 936.50 840.00 397.00 242.00 1.00 0.00 3347.00
1944 0.00 0.00 0.00 34.50 327.00 552.00 831.50 827.50 517.00 254.00 48.62 a 0.00 3392.12
1945 0.00 0.00 51.00 39.50 200.50 509.00 801.00 838.00 457.00 177.50 1.00 0.00 3074.50
1946 0.00 a 0.00 60.50 147.50 237.50 562.00 851.50 786.50 477.50 226.00 22.50 0.00 j 3371.50
1947 0.00 f 0.00 b 0.00 c 29.48 a 144.50 g 0.00 z 817.00 849.50 469.50 f 443.50 35.50 0.00 a 2174.98
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 637.50 817.00 838.00 655.50 250.00 42.00 0.00 3240.00
1949 0.00 0.00 0.00 211.00 358.50 721.55 a 864.50 868.50 433.00 245.00 36.00 0.00 3738.05
1950 0.00 0.00 0.00 26.00 211.50 554.50 662.00 573.00 471.50 223.50 9.00 0.00 2731.00
1951 0.00 0.00 0.00 a 61.55 a 424.50 530.50 808.00 652.50 398.50 187.50 7.50 8.50 3079.05
1952 0.00 a 0.00 b 0.00 249.50 288.00 g 644.00 852.50 b 767.50 530.00 150.87 a 24.50 0.00 3218.87
1953 0.00 0.00 4.00 50.50 306.38 a 581.38 a 793.50 877.50 498.60 e 337.38 a 74.50 0.00 3523.75
1954 0.00 0.00 0.00 94.50 217.52 a 625.00 821.00 775.50 483.50 161.50 47.00 0.00 3225.52
1955 0.00 d 0.00 1.00 203.50 377.17 a 647.50 920.18 a 929.00 503.00 255.50 0.00 0.00 3836.85
1956 0.00 0.00 0.00 12.32 b 303.50 579.00 653.50 689.50 402.00 367.00 63.00 0.00 a 3069.82
1957 0.00 0.00 a 0.00 141.00 312.00 498.50 826.50 799.80 a 448.00 169.50 31.50 0.00 3226.80
1958 0.00 1.50 0.00 117.41 a 366.83 a 453.50 723.00 743.00 544.00 240.00 38.50 0.00 a 3227.75
1959 0.00 0.00 6.00 97.50 364.00 640.00 845.78 a 840.00 536.50 135.50 0.50 0.00 3465.78
1960 0.00 0.00 2.50 108.50 234.00 566.50 806.50 845.50 534.50 253.00 13.00 2.00 3366.00
1961 0.00 2.50 6.50 44.50 312.50 623.50 799.50 894.00 521.50 279.00 28.00 0.00 3511.50
1962 0.00 0.00 0.00 b 68.50 291.00 485.00 681.00 720.50 446.00 280.00 26.00 15.50 3013.50
1963 0.00 0.00 22.00 75.50 317.50 570.00 896.50 728.00 547.00 442.00 25.00 0.00 3623.50
1964 0.00 0.50 5.50 45.50 415.00 517.00 825.50 648.00 0.00 z 241.00 72.50 0.00 2770.50
1965 0.00 0.00 0.00 72.50 314.43 c 472.00 645.50 696.50 328.00 231.00 23.00 0.00 2782.93
1966 0.00 0.00 z 1.00 33.00 279.50 624.00 888.50 740.50 456.00 184.97 a 9.50 0.00 3216.97
1967 0.00 a 0.00 b 31.00 a 69.00 231.50 0.00 z 0.00 z 237.00 t 551.00 225.50 16.00 0.00 1124.00
1968 0.00 0.00 49.00 162.50 240.00 497.50 787.50 0.00 z 559.50 300.50 16.00 0.00 2612.50
1969 0.00 0.00 0.00 78.00 343.00 406.50 701.50 934.50 561.50 134.00 19.50 0.00 3178.50
1970 0.00 0.00 0.00 z 47.50 186.50 557.50 898.00 853.50 484.50 170.50 7.00 0.00 3205.00
1971 0.00 0.00 0.00 79.00 206.50 517.50 726.50 733.50 522.00 312.00 7.00 0.00 3104.00
1972 0.00 0.00 0.00 23.50 202.50 467.50 674.50 695.00 424.50 133.50 8.50 0.00 2629.50
1973 0.00 0.00 0.00 64.50 173.00 520.00 831.00 797.50 497.00 301.50 9.50 0.00 3194.00
1974 0.00 0.00 l 0.00 28.00 158.00 559.00 826.50 687.00 354.00 151.00 21.00 0.00 2784.50
1975 0.00 0.00 1.00 10.00 382.50 502.50 985.50 783.00 428.50 233.50 115.00 0.00 3441.50
1976 0.00 8.00 0.00 z 131.50 322.00 641.00 866.50 822.50 513.50 128.50 4.00 0.00 3437.50
1977 0.00 0.00 3.00 87.50 363.00 489.11 b 765.50 604.50 378.00 172.50 34.00 0.00 2897.11
1978 0.00 b 0.00 3.00 20.50 267.50 590.50 749.34 b 732.63 a 569.50 238.50 44.00 0.00 3215.48
1979 0.00 0.00 0.00 33.50 173.00 482.00 746.00 669.00 539.00 128.00 5.00 0.00 2775.50
1980 0.00 a 0.00 0.00 98.50 392.50 565.50 865.50 739.00 440.50 126.00 17.00 0.00 3244.50
1981 0.00 7.50 5.00 66.00 257.50 504.50 0.00 z 0.00 z 499.00 201.50 67.00 0.00 1608.00
1982 0.00 0.00 1.50 74.50 205.00 468.50 684.50 f 678.50 512.50 214.00 4.50 2.50 2161.50
1983 0.00 0.50 0.00 69.00 190.00 459.50 899.50 979.00 503.50 173.50 22.00 0.00 3296.50
1984 0.00 0.50 0.00 55.00 285.00 497.00 835.00 822.50 424.50 190.65 a 9.00 0.00 3119.15
1985 0.00 0.50 16.00 45.50 h 321.00 f 487.50 804.00 655.50 437.00 163.50 7.00 0.00 a 2571.00
1986 0.00 0.00 42.50 82.50 b 280.00 567.50 784.50 752.00 435.00 194.00 1.50 0.00 3139.50
1987 0.00 0.00 22.73 a 215.69 a 314.50 670.00 873.00 817.50 588.00 112.00 35.50 0.00 3648.92
1988 0.00 0.00 1.50 72.00 354.50 736.03 a 991.00 815.82 a 524.50 127.50 4.00 0.00 3626.85
1989 0.00 0.00 0.00 37.50 293.00 491.00 849.00 830.50 541.50 188.50 2.00 0.00 3233.00
1990 0.00 0.00 14.50 96.50 199.00 645.50 0.00 z 796.50 599.50 156.00 56.50 3.00 2567.00
1991 0.00 5.50 7.50 71.50 278.50 514.50 810.00 900.00 481.00 153.00 1.50 0.00 3223.00
1992 0.00 0.00 0.00 34.00 434.00 491.00 668.00 712.50 489.50 194.50 0.00 0.00 3023.50
1993 0.50 0.00 4.50 29.50 318.00 472.00 738.00 805.00 343.00 114.50 0.00 0.00 2825.00
1994 0.00 0.00 12.00 114.00 408.50 619.50 772.00 725.50 580.50 270.50 41.50 0.00 3544.00
1995 0.00 0.00 9.50 17.50 349.00 606.50 786.50 834.00 497.00 204.00 0.00 0.00 3304.00
1996 0.00 a 0.00 1.50 37.50 210.00 0.00 z 686.00 811.00 542.00 226.00 5.00 0.00 2519.00
1997 0.00 0.00 0.00 55.50 181.00 664.00 746.50 734.00 603.00 244.50 8.00 0.00 3236.50
1998 0.00 4.00 14.50 166.00 452.50 549.00 893.32 a 910.00 683.00 306.50 21.00 7.50 4007.32
1999 0.00 0.00 24.00 89.50 360.38 c 613.50 913.98 a 792.64 b 0.00 z 34.50 q 44.44 c 0.00 2838.44
2000 0.00 6.00 36.50 48.00 372.50 541.50 774.00 862.00 539.50 276.00 41.00 0.00 b 3497.00
2001 0.00 0.00 5.50 122.00 369.50 604.00 828.73 a 896.00 541.00 203.50 126.96 b 0.00 3697.20
2002 0.50 1.50 0.00 103.50 262.00 592.50 957.00 797.00 578.00 94.50 6.00 0.00 3392.50
2003 2.00 0.00 14.00 100.50 245.50 506.00 890.50 734.50 f 558.50 244.00 18.00 0.00 2579.00
2004 0.00 0.00 4.00 87.00 197.00 552.50 792.50 668.50 606.00 246.00 39.00 0.00 3192.50
2005 0.00 0.00 11.50 118.39 b 232.50 550.50 856.50 770.50 659.00 259.50 47.50 0.00 3505.89
2006 0.00 0.00 a 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 884.50 521.50 0.00 z 27.00 0.00 1433.00
2007 0.00 0.00 17.00 0.00 z 0.00 z 619.00 890.00 0.00 z 585.00 304.50 31.00 0.00 2446.50
2008 0.00 z 0.00 z 4.00 74.50 280.50 625.00 808.00 828.00 0.00 z 234.50 46.00 0.00 a 2900.50
2009 0.00 0.00 3.00 76.00 341.00 577.50 0.00 z 708.00 657.50 114.00 65.00 0.00 2542.00
2010 0.00 0.00 57.50 0.00 z 356.50 579.50 954.50 866.00 422.00 274.50 31.00 0.00 3541.50
2011 0.00 3.00 1.00 69.00 199.50 402.12 d 933.00 914.00 503.00 259.50 30.50 0.00 3314.62
2012 0.00 f 0.00 67.17 a 73.50 398.50 665.00 971.50 0.00 z 121.00 t 0.00 z 0.00 z 0.00 z 2175.67
Period of Record Statistics
MEAN 0.08 0.56 9.57 75.06 283.16 554.99 812.33 782.22 501.34 217.30 24.74 0.76 3251.17
S.D. 0.50 1.61 16.29 50.35 77.40 76.46 84.70 86.02 76.34 75.44 23.06 2.80 306.99
SKEW 7.81 3.15 2.17 1.17 0.18 0.08 -0.03 -0.16 -0.12 0.49 1.68 4.50 -0.29
MAX 4.50 8.00 71.09 249.50 452.50 736.03 995.62 979.00 683.00 443.50 126.96 17.50 4007.32
MIN 0.00 0.00 0.00 0.00 134.00 331.00 621.00 573.00 307.50 38.50 0.00 0.00 2340.00
NO YRS 98 99 99 97 98 100 97 97 98 100 102 100 72