GRAND RAPIDS FRS LAB, MINNESOTA

Monthly Total Growing Degree Days

(213303)

Base Temperature = 40 F

File last updated on Apr 6, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1915 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 484.29 b 670.00 668.50 453.62 a 163.00 8.50 0.00 2447.91
1916 0.00 0.00 5.50 98.00 318.27 a 558.00 1022.50 802.50 418.00 133.00 14.00 0.00 3369.77
1917 0.00 0.00 1.50 27.00 307.00 564.31 a 913.00 669.00 414.50 18.50 8.00 0.00 a 2922.81
1918 0.00 g 0.00 15.00 52.50 295.50 621.50 783.50 740.50 223.45 a 152.00 20.00 0.00 2903.95
1919 0.00 0.00 0.00 73.00 425.50 812.00 837.00 727.50 496.00 110.50 0.00 0.00 3481.50
1920 0.00 0.00 10.00 14.00 407.00 681.00 764.00 749.00 593.00 315.50 0.00 0.00 3533.50
1921 0.00 0.00 6.00 178.50 505.00 822.50 1031.50 799.50 550.00 208.00 0.00 0.00 4101.00
1922 0.00 0.00 1.00 92.00 603.50 744.00 807.00 848.37 a 557.50 237.67 a 19.50 0.00 3910.53
1923 0.00 0.00 0.00 121.50 438.00 815.00 948.00 655.00 484.50 181.50 26.50 0.00 3670.00
1924 0.00 0.00 0.00 83.50 155.00 567.00 766.00 676.00 372.50 293.50 0.00 0.00 2913.50
1925 0.00 1.50 35.50 223.00 378.00 659.00 809.00 874.00 521.50 21.00 6.00 0.00 3528.50
1926 0.00 0.00 6.50 137.50 527.00 570.00 871.00 794.50 355.86 a 130.00 0.00 0.00 3392.36
1927 0.00 0.00 8.50 115.00 291.50 647.00 800.00 644.80 a 550.71 b 204.50 0.00 a 0.00 3262.01
1928 0.00 0.00 17.00 61.03 a 485.00 550.00 826.00 755.00 389.48 a 185.00 18.10 a 0.00 3286.62
1929 0.00 0.00 8.50 96.50 302.50 581.00 839.00 732.50 403.00 182.50 4.00 0.00 3149.50
1930 0.00 2.07 a 0.00 b 107.07 a 388.00 665.69 a 861.00 849.00 465.50 217.50 34.82 b 0.00 a 3590.65
1931 0.00 0.00 a 0.00 a 155.50 372.00 761.00 875.50 728.50 635.00 315.50 45.50 0.00 b 3888.50
1932 0.00 1.50 0.00 113.00 439.00 769.50 846.82 a 790.50 443.50 116.50 5.00 0.00 3525.32
1933 0.00 0.00 0.00 88.45 a 438.50 854.50 905.20 a 730.57 a 606.00 107.00 9.83 a 0.00 3740.04
1934 0.00 0.00 0.00 81.50 595.72 a 693.50 818.00 685.00 394.00 295.53 a 10.50 0.00 3573.75
1935 0.00 0.00 4.00 76.50 286.00 540.00 977.50 772.50 403.50 167.40 a 0.00 u 0.00 a 3227.40
1936 0.00 0.00 0.00 25.50 524.93 a 604.50 1006.00 814.50 540.00 115.50 0.50 0.00 3631.43
1937 0.00 0.00 0.00 46.55 a 453.00 639.00 876.78 a 934.50 481.00 118.32 a 6.21 a 0.00 3555.36
1938 0.00 0.00 67.00 0.00 u 347.00 669.00 825.50 899.50 470.50 282.00 33.00 0.00 3593.50
1939 0.00 0.00 b 8.50 110.00 498.00 670.50 876.86 c 810.00 520.50 166.00 6.00 6.50 3672.86
1940 0.00 a 0.00 0.00 66.72 a 363.00 600.50 848.50 718.00 575.50 235.00 5.50 0.00 3412.72
1941 0.00 0.00 3.62 a 238.00 549.00 724.50 903.00 735.45 b 519.50 230.50 5.50 9.00 3918.06
1942 0.00 0.00 1.50 280.50 316.00 607.24 a 749.50 761.57 a 396.50 253.50 9.00 0.00 b 3375.31
1943 0.00 0.00 8.00 97.50 316.00 683.50 910.00 762.60 a 379.00 200.50 0.00 0.00 3357.10
1944 0.00 0.00 0.00 57.50 476.50 677.00 804.50 774.50 441.50 183.42 a 30.50 0.00 3445.42
1945 0.00 0.00 62.00 a 56.00 193.75 a 491.00 757.50 757.50 408.50 136.50 0.00 0.00 2862.75
1946 0.00 0.00 97.00 164.50 328.50 627.50 824.00 686.65 a 426.50 163.00 4.00 0.00 3321.65
1947 0.00 0.00 0.00 48.50 255.00 565.50 875.50 943.00 454.50 401.97 a 17.50 0.00 3561.47
1948 0.00 0.00 5.17 a 189.50 405.00 635.50 865.50 816.00 646.00 213.00 23.00 0.00 3798.67
1949 0.00 0.00 0.00 169.50 441.50 736.00 850.00 884.53 a 404.00 233.50 19.00 0.00 3738.03
1950 0.00 0.00 0.00 21.50 322.50 634.50 766.00 636.00 523.00 213.90 a 8.00 0.00 3125.40
1951 0.00 0.00 0.00 64.00 532.50 584.00 812.72 a 659.30 c 372.50 178.50 6.50 7.50 3217.52
1952 0.00 0.00 0.00 259.00 409.00 752.50 838.50 703.70 a 504.00 97.00 13.00 0.00 3576.70
1953 0.00 0.00 2.00 39.50 363.50 694.00 786.00 824.00 446.90 a 350.00 48.50 0.00 3554.40
1954 0.00 0.00 0.50 75.00 287.50 696.00 829.50 735.50 446.50 161.00 30.50 0.00 3262.00
1955 0.00 0.00 5.00 244.00 524.00 694.50 959.50 882.47 a 436.00 214.50 0.00 0.00 a 3959.97
1956 0.00 0.00 0.00 9.00 328.50 738.00 692.50 704.00 362.59 a 351.00 64.00 0.00 3249.59
1957 0.00 0.00 0.00 175.00 401.50 621.50 931.50 746.50 407.50 180.50 9.50 0.00 3473.50
1958 0.00 6.00 2.00 135.00 424.00 477.00 753.50 744.50 489.00 214.50 26.50 0.00 3272.00
1959 0.00 a 0.00 0.00 91.00 454.50 706.00 843.50 860.50 481.00 101.00 0.00 a 0.00 3537.50
1960 0.00 0.00 0.00 112.50 406.50 597.50 816.00 842.50 501.50 222.00 1.00 0.00 3499.50
1961 0.00 5.50 29.50 36.00 364.50 734.50 821.00 865.00 486.00 227.50 6.00 0.00 3575.50
1962 0.00 0.00 2.50 102.50 475.50 635.50 723.00 770.00 420.00 294.00 5.50 10.50 3439.00
1963 0.00 0.00 44.00 139.50 348.00 737.00 892.50 760.50 552.00 481.50 22.50 0.00 3977.50
1964 0.00 0.00 3.00 145.00 539.00 641.00 878.50 652.00 412.50 190.00 58.50 0.00 3519.50
1965 0.00 0.00 0.00 63.00 449.00 635.50 766.00 722.00 258.50 206.50 23.00 0.00 3123.50
1966 0.00 0.00 4.50 46.00 325.00 694.00 936.00 713.00 450.50 155.50 0.50 0.00 3325.00
1967 0.00 0.00 29.00 80.50 271.00 647.50 787.50 710.00 520.00 159.00 7.00 0.00 3211.50
1968 0.00 0.00 68.00 138.00 343.00 633.00 796.50 754.50 497.00 239.50 3.50 0.00 3473.00
1969 0.00 0.00 0.00 149.50 417.50 475.50 823.50 901.50 507.00 105.00 29.50 0.00 3409.00
1970 0.00 0.00 0.00 106.50 344.00 766.50 932.50 835.00 536.00 221.00 1.00 0.00 3742.50
1971 0.00 0.00 0.00 145.50 350.00 790.50 728.50 730.00 511.50 288.00 0.00 0.00 3544.00
1972 0.00 0.00 0.50 80.00 578.50 699.00 773.50 761.50 370.50 152.50 3.50 0.00 3419.50
1973 0.00 0.00 23.50 107.00 395.00 704.00 827.50 853.00 436.50 304.00 4.00 0.00 3654.50
1974 0.00 0.00 0.00 143.50 293.00 681.50 950.50 706.00 360.50 212.00 16.50 0.00 3363.50
1975 0.00 0.00 0.00 31.00 526.00 664.50 975.00 782.00 403.50 263.00 56.50 0.00 3701.50
1976 0.00 4.00 5.50 220.50 452.00 783.00 872.00 850.50 510.50 145.50 3.00 0.00 3846.50
1977 0.00 0.00 48.00 299.50 736.50 719.50 903.00 625.00 458.00 188.00 46.00 0.00 4023.50
1978 0.00 0.00 13.50 99.50 552.50 683.50 819.00 805.00 592.50 211.50 50.50 0.00 3827.50
1979 0.00 0.00 0.50 85.00 299.00 643.00 872.00 699.50 533.00 141.50 5.00 0.00 3278.50
1980 0.00 0.00 0.00 243.00 617.50 707.50 916.50 818.50 439.00 122.00 12.00 0.00 3876.00
1981 0.00 7.00 31.00 146.00 459.50 659.00 868.50 836.00 473.00 182.50 63.00 0.00 3725.50
1982 0.00 0.00 0.00 141.50 549.50 555.00 895.50 762.50 491.00 224.50 4.50 6.50 3630.50
1983 0.00 0.00 0.50 72.00 302.50 676.00 964.50 931.00 494.00 143.50 20.00 0.00 3604.00
1984 0.00 0.00 0.00 154.50 351.00 713.50 861.00 918.50 344.50 256.00 2.50 0.00 a 3601.50
1985 0.00 0.00 8.00 195.00 527.50 527.00 830.00 671.50 419.50 118.00 1.50 0.00 3298.00
1986 0.00 0.00 a 24.50 171.00 457.50 667.00 874.00 648.50 412.00 162.50 3.00 0.00 3420.00
1987 0.00 0.00 42.00 310.50 494.00 788.50 920.50 746.00 504.50 83.50 32.50 0.00 3922.00
1988 0.00 0.00 2.00 99.00 623.00 824.50 970.00 827.50 493.50 137.00 2.50 0.00 3979.00
1989 0.00 0.00 13.00 86.50 441.00 652.50 940.50 794.00 454.50 209.50 0.00 0.00 3591.50
1990 0.00 0.00 7.50 191.00 344.50 716.00 830.50 810.00 507.50 105.00 43.00 0.00 3555.00
1991 0.00 0.00 13.50 196.00 584.50 795.00 839.00 900.50 430.00 102.50 0.50 0.00 3861.50
1992 0.00 0.00 3.00 72.00 500.00 598.50 636.50 672.50 403.50 189.00 0.00 0.00 3075.00
1993 0.00 0.00 26.50 64.00 387.00 596.00 799.50 825.00 305.50 94.50 0.00 0.00 a 3098.00
1994 0.00 0.50 3.50 114.00 496.00 725.50 800.00 720.50 542.50 245.50 21.50 0.00 3669.50
1995 0.00 0.00 20.00 30.00 420.00 874.00 823.50 890.50 469.50 143.00 0.00 0.00 3670.50
1996 0.00 0.00 1.00 34.00 358.50 712.00 789.00 855.00 506.50 166.00 0.50 0.00 3422.50
1997 0.00 a 0.00 6.50 118.50 291.00 804.50 841.00 733.50 578.00 252.50 0.00 0.00 3625.50
1998 0.00 3.50 30.00 206.00 620.50 651.50 854.50 882.50 623.50 232.00 5.00 2.50 4111.50
1999 0.00 0.50 26.50 167.50 505.50 727.00 949.50 803.50 461.00 139.50 45.50 0.00 3826.00
2000 0.00 5.50 59.00 137.00 481.00 583.50 883.50 812.50 425.50 234.50 32.00 0.00 3654.00
2001 0.00 0.00 0.00 151.00 484.00 746.50 908.00 894.00 504.50 149.50 99.50 0.00 3937.00
2002 0.00 0.00 0.00 123.00 302.50 816.50 1001.50 836.00 610.50 43.50 0.50 0.00 3734.00
2003 0.00 0.00 47.50 170.00 439.00 705.50 903.00 961.50 518.00 237.00 2.50 0.00 3984.00
2004 0.00 0.50 7.00 97.00 281.50 605.00 811.00 642.50 647.00 190.50 12.00 0.00 3294.00
2005 0.00 0.00 21.00 219.00 375.50 729.00 914.00 796.00 598.00 201.00 17.00 0.00 3870.50
2006 0.00 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 134.50 39.00 0.00 173.50
2007 0.00 0.00 59.50 199.50 547.00 803.50 924.50 797.00 514.50 266.00 20.50 0.00 4132.00
2008 0.00 z 0.00 0.00 73.00 316.00 654.00 832.50 817.00 514.00 182.00 63.50 0.00 3452.00
2009 0.00 0.00 10.50 127.00 354.00 637.50 700.50 717.50 679.00 56.50 40.00 0.00 3322.50
2010 0.00 0.00 66.50 262.00 480.00 661.50 907.50 898.00 390.50 269.00 45.50 0.00 3980.50
2011 0.00 1.50 3.00 101.00 402.50 643.00 969.00 846.50 459.50 270.50 9.00 0.00 3705.50
2012 0.00 0.00 167.50 136.00 483.00 755.00 1005.50 805.50 469.00 128.00 11.50 0.00 3961.00
2013 0.00 0.00 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 0.00
Period of Record Statistics
MEAN 0.00 0.40 14.10 122.07 418.90 673.89 855.84 780.39 472.83 192.13 16.39 0.43 3563.17
S.D. 0.00 1.32 25.41 67.72 105.80 86.30 78.70 80.51 82.33 77.31 19.49 1.82 284.25
SKEW 0.00 3.61 3.19 0.68 0.25 -0.07 -0.08 0.11 -0.05 0.61 1.60 4.24 -0.13
MAX 0.00 7.00 167.50 310.50 736.50 874.00 1031.50 961.50 679.00 481.50 99.50 10.50 4132.00
MIN 0.00 0.00 0.00 9.00 155.00 475.50 636.50 625.00 223.45 18.50 0.00 0.00 2862.75
NO YRS 96 98 96 95 96 97 97 97 97 98 97 98 92