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 201205
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
1919 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 333.50 j 166.00 0.50 0.00 z 166.50
1920 0.00 z 0.00 z 32.66 c 37.20 e 465.00 d 701.67 c 376.00 q 612.00 f 644.46 b 256.50 n 0.00 z 0.00 z 1880.99
1921 0.00 z 0.00 z 0.00 z 0.00 z 554.00 846.92 d 1090.88 b 801.87 a 628.45 a 239.50 0.00 z 0.00 e 4161.62
1922 0.00 c 0.00 0.00 c 88.50 675.50 736.07 b 757.12 e 891.00 621.72 a 0.00 z 70.38 d 0.00 c 3840.30
1923 0.00 b 0.00 z 0.00 c 145.18 b 464.50 843.89 c 952.45 b 678.68 c 610.20 e 239.65 e 38.08 d 0.00 i 3972.62
1924 0.00 e 0.00 0.00 104.50 215.97 a 598.97 a 789.00 724.50 409.66 a 383.00 20.00 0.00 a 3245.59
1925 0.00 c 0.00 43.29 b 252.32 b 395.52 b 746.38 a 866.45 a 921.50 622.50 61.00 16.11 c 0.00 3925.07
1926 0.00 b 0.00 c 7.75 a 150.50 576.00 578.79 a 850.00 788.36 b 489.11 b 225.78 a 8.50 0.00 3674.80
1927 0.00 0.00 b 24.59 b 157.50 b 372.00 b 654.50 786.50 640.00 625.00 222.00 12.00 0.00 b 3494.09
1928 0.00 0.00 18.60 a 86.90 a 529.50 584.50 875.00 841.50 446.00 262.00 32.07 a 0.00 3676.07
1929 0.00 0.00 20.00 165.50 379.00 671.00 925.00 825.00 459.50 207.00 6.21 a 0.00 3658.21
1930 0.00 a 17.50 9.00 213.75 b 496.52 a 753.89 c 927.50 945.50 a 523.27 d 299.50 79.50 0.00 4265.92
1931 0.00 0.00 0.00 170.00 c 421.71 b 864.83 a 998.41 b 813.50 704.00 359.50 77.88 d 0.50 4410.33
1932 0.00 b 2.50 0.00 a 126.00 475.50 850.50 964.50 897.00 498.00 152.50 25.50 0.00 a 3992.00
1933 0.00 0.00 0.50 109.50 534.00 994.00 1031.00 840.10 a 731.00 189.00 27.32 b 0.00 4456.42
1934 0.00 0.00 0.00 107.50 658.50 801.50 942.50 760.00 434.50 284.50 19.00 0.00 a 4008.00
1935 0.00 0.00 0.00 82.00 317.75 a 0.00 z 1076.45 b 830.00 475.00 185.00 0.00 f 0.00 a 2966.20
1936 0.00 0.00 0.00 51.50 545.00 647.00 837.50 f 857.00 631.50 139.50 6.21 a 0.00 2877.71
1937 0.00 0.00 0.00 76.50 465.00 667.50 859.22 a 951.50 486.00 134.85 a 10.86 a 0.00 3651.43
1938 0.00 0.00 b 58.00 174.00 334.50 655.50 819.00 833.50 492.41 a 342.50 53.00 0.00 3762.41
1939 0.00 0.00 24.50 122.50 577.00 732.00 975.98 a 841.00 582.00 224.00 6.72 a 6.00 4091.71
1940 0.00 f 0.00 a 0.00 45.00 b 362.50 657.00 920.00 791.50 677.00 313.10 a 13.93 b 0.00 3780.03
1941 0.00 0.00 0.00 a 270.52 a 606.50 746.50 971.00 833.90 a 612.41 a 286.23 a 0.00 z 0.00 z 4327.06
1942 0.00 z 0.00 x 19.67 e 327.00 e 279.50 g 738.10 a 839.00 823.00 458.50 277.50 15.50 0.00 a 3498.28
1943 0.00 b 0.00 c 15.50 b 111.50 408.17 a 770.50 1000.50 869.00 434.00 237.00 7.24 a 0.00 b 3853.41
1944 6.72 a 0.00 c 2.14 b 88.00 590.07 b 727.50 b 855.60 a 872.00 542.50 190.50 64.14 a 0.00 b 3939.16
1945 0.00 0.00 114.50 99.64 b 247.45 c 571.50 824.17 b 822.00 484.50 129.34 b 5.69 a 0.00 3298.80
1946 0.00 a 0.00 b 97.28 b 219.50 367.00 689.00 903.65 a 598.00 g 519.83 a 272.28 a 7.50 0.00 c 3076.04
1947 0.00 f 0.00 1.50 44.42 d 337.38 a 653.50 936.50 1067.95 a 586.03 a 515.50 36.96 b 0.00 a 4179.76
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 717.32 b 962.00 880.50 669.83 a 259.00 48.75 b 3.00 3540.40
1949 0.00 d 0.00 5.50 192.93 a 555.50 845.36 b 996.65 a 923.50 493.93 b 345.65 a 39.50 0.00 a 4398.52
1950 0.00 0.00 b 1.50 45.50 387.50 b 741.50 0.00 z 681.50 529.14 a 304.00 19.50 f 0.00 f 2690.64
1951 0.00 3.00 g 0.50 101.50 552.00 573.00 830.50 690.50 409.00 228.50 6.21 a 11.00 3402.71
1952 0.00 0.00 a 2.00 249.44 c 398.50 763.00 903.50 747.62 a 531.43 b 95.00 23.79 a 0.00 a 3714.28
1953 0.00 c 0.00 12.40 a 49.00 418.50 775.50 816.00 857.00 518.50 382.00 64.14 a 0.00 3893.04
1954 0.00 0.00 0.00 132.00 270.50 768.62 a 861.50 720.00 469.50 156.00 28.45 a 0.00 3406.57
1955 0.00 0.00 10.50 271.50 548.00 699.50 1011.50 909.50 508.00 239.50 0.00 0.00 4198.00
1956 0.00 0.00 0.00 30.00 393.50 775.50 720.00 752.00 437.59 a 361.00 85.00 0.00 3554.59
1957 0.00 0.00 0.00 197.50 376.50 631.55 a 947.50 798.00 428.50 50.50 p 27.00 0.00 3406.55
1958 0.00 5.00 1.00 141.50 414.00 509.00 767.00 742.50 548.28 a 231.47 a 38.50 0.00 3398.24
1959 0.00 0.00 10.50 128.00 550.00 786.00 910.00 949.00 572.50 136.00 2.00 0.00 4044.00
1960 0.00 0.00 6.50 164.00 453.50 640.00 885.00 909.50 575.50 265.00 11.50 0.00 3910.50
1961 0.00 0.00 27.50 59.00 393.50 747.00 857.50 929.50 548.50 268.00 20.50 0.00 3851.00
1962 0.00 0.00 3.50 124.00 599.00 682.50 786.50 816.00 471.50 322.50 13.00 27.00 3845.50
1963 0.00 a 0.00 54.50 199.00 435.00 779.50 953.50 781.50 588.50 500.00 42.00 0.00 4333.50
1964 0.00 0.00 3.00 202.50 595.50 735.50 985.00 740.50 496.50 237.00 90.00 0.00 4085.50
1965 0.00 0.00 0.00 85.50 535.00 655.00 799.80 a 768.00 328.00 264.00 35.00 0.00 3470.30
1966 0.00 1.50 25.50 63.00 333.77 a 757.00 989.00 732.50 497.50 192.50 6.50 0.00 3598.77
1967 0.00 0.00 37.50 136.50 313.00 675.00 805.50 700.50 500.50 188.50 7.50 0.00 3364.50
1968 0.00 0.00 96.50 209.50 361.00 658.93 b 834.50 811.50 523.00 290.50 13.97 a 0.00 3799.39
1969 0.00 0.00 0.00 168.00 500.00 482.07 a 834.50 929.50 555.00 174.50 24.83 a 0.00 3668.40
1970 0.00 0.00 0.00 158.50 421.00 771.43 b 948.50 838.50 515.50 220.50 1.00 0.00 3874.93
1971 0.00 0.00 1.50 187.76 a 369.50 803.50 745.55 a 721.50 553.50 346.00 2.50 0.00 3731.31
1972 0.00 0.00 0.50 91.00 575.00 667.24 a 788.00 782.00 427.50 155.00 8.50 0.00 3494.74
1973 0.00 0.00 38.50 141.72 a 363.50 713.50 855.00 890.00 474.00 352.50 14.50 0.00 3843.22
1974 0.00 0.00 2.00 176.00 364.50 626.00 968.50 723.50 358.00 227.00 27.00 0.00 3472.50
1975 0.00 0.00 0.50 57.50 550.77 a 681.00 949.00 816.00 403.50 272.00 78.62 a 0.00 3808.89
1976 0.00 0.50 21.50 195.52 a 432.00 787.50 922.50 857.50 506.50 139.50 0.00 0.00 3863.02
1977 0.00 0.00 44.50 310.50 720.50 712.00 934.50 663.00 517.50 173.00 51.00 0.00 4126.50
1978 0.00 0.00 30.50 103.00 552.50 678.62 a 834.50 831.00 633.50 216.00 50.50 0.00 3930.12
1979 0.00 0.00 1.00 126.00 324.00 659.00 858.50 754.00 575.89 b 149.00 16.50 0.00 3463.89
1980 0.00 0.00 z 0.00 229.00 585.50 687.00 930.50 830.50 473.00 131.00 22.50 0.00 3889.00
1981 0.00 11.00 31.00 192.00 415.50 686.00 872.50 828.00 474.83 a 188.00 65.00 0.00 3763.83
1982 0.00 0.00 9.00 152.50 577.00 561.00 933.50 772.00 508.50 262.50 14.00 13.50 3803.50
1983 0.00 0.50 6.00 95.00 338.00 708.50 997.00 961.50 590.50 209.50 37.00 0.00 3943.50
1984 0.00 1.00 0.00 164.00 417.00 768.50 867.50 938.00 425.50 319.50 21.00 0.00 3922.00
1985 0.00 0.00 27.50 257.50 572.50 613.00 846.50 715.00 507.50 189.00 4.00 0.00 3732.50
1986 0.00 0.00 49.00 259.00 559.50 742.50 928.50 728.00 513.00 205.50 4.50 0.00 3989.50
1987 0.00 0.00 65.00 295.50 513.50 787.50 969.00 779.50 537.50 72.50 55.50 0.00 4075.50
1988 0.00 0.00 1.00 137.50 630.50 828.00 1017.50 898.50 541.00 140.00 8.00 0.00 4202.00
1989 0.00 0.00 10.50 131.00 467.50 668.00 955.00 837.50 521.00 275.50 4.00 0.00 3870.00
1990 0.00 0.00 32.50 239.00 367.50 755.00 841.00 818.00 570.00 148.50 76.50 0.00 3848.00
1991 0.00 0.00 27.00 235.50 595.00 807.00 845.00 874.00 479.00 162.50 1.50 0.00 a 4026.50
1992 0.00 0.00 4.50 94.50 555.00 638.50 678.00 700.00 490.50 217.50 2.00 0.00 b 3380.50
1993 0.00 0.00 19.00 91.00 432.50 620.00 850.50 852.00 345.50 156.50 5.50 0.00 3372.50
1994 0.00 8.00 8.50 138.50 505.50 759.00 822.00 749.00 622.50 299.50 42.00 0.00 3954.50
1995 0.00 0.00 45.00 39.00 420.50 833.00 880.50 920.00 489.50 209.50 0.00 0.00 3837.00
1996 0.00 0.00 1.50 86.50 383.00 721.00 792.50 852.00 564.00 239.50 6.00 0.00 3646.00
1997 0.00 0.00 10.50 158.50 313.00 793.50 848.50 734.50 595.00 276.50 8.50 0.00 3738.50
1998 0.00 11.50 51.00 231.50 646.00 666.50 897.50 895.00 696.50 305.50 26.00 9.00 4436.00
1999 0.00 0.00 42.00 168.00 573.00 719.50 981.00 821.00 308.00 p 176.00 85.00 0.00 3565.50
2000 0.00 11.00 84.00 129.00 527.50 632.00 866.00 853.53 a 490.00 320.50 66.50 0.00 3980.03
2001 0.00 0.00 0.00 186.50 525.00 736.50 915.50 928.00 510.00 203.50 144.00 1.50 4150.50
2002 1.00 0.00 0.50 156.50 318.50 773.50 975.00 830.00 259.00 n 100.50 13.00 0.00 3168.50
2003 0.50 0.00 r 19.50 v 139.00 g 428.00 674.00 868.50 922.00 567.00 240.00 7.50 0.00 3707.50
2004 0.00 0.00 29.50 149.00 377.00 602.00 817.00 615.50 693.00 257.00 38.00 0.00 3578.00
2005 0.00 0.50 30.50 241.50 390.00 835.00 946.50 846.00 665.00 256.00 46.50 0.00 4257.50
2006 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 862.00 475.50 0.00 z 33.00 0.00 1370.50
2007 0.00 0.00 87.00 209.00 596.50 816.00 933.00 844.50 606.00 317.00 25.00 0.00 4434.00
2008 0.00 0.00 1.00 109.50 342.00 666.00 868.50 807.00 573.00 206.00 80.00 0.00 3653.00
2009 0.00 0.00 22.00 155.00 440.00 679.50 735.00 750.50 679.00 94.50 64.50 0.00 3620.00
2010 0.00 0.00 68.00 294.00 515.00 694.50 0.00 z 958.00 479.00 298.50 49.20 e 0.00 c 3356.20
2011 0.00 1.68 c 0.00 j 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 1.68
2012 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
Period of Record Statistics
MEAN 0.10 0.86 19.44 151.14 463.13 712.96 891.60 821.68 531.21 235.31 29.82 0.82 3839.46
S.D. 0.73 2.95 25.97 70.19 107.57 85.16 81.78 83.81 83.18 84.31 28.06 3.58 296.39
SKEW 8.77 3.93 1.70 0.39 0.07 0.07 -0.07 -0.03 0.16 0.61 1.30 5.53 0.19
MAX 6.72 17.50 114.50 327.00 720.50 994.00 1090.88 1067.95 731.00 515.50 144.00 27.00 4456.42
MIN 0.00 0.00 0.00 30.00 215.97 482.07 678.00 615.50 328.00 61.00 0.00 0.00 3245.59
NO YRS 86 84 87 87 88 89 86 89 89 88 87 87 70