GRAND FORKS INTL AP, NORTH DAKOTA

Monthly Total Growing Degree Days

(323616)

Base Temperature = 40 F

File last updated on Apr 4, 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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 691.50 h 678.00 233.00 17.50 0.00 928.50
1949 0.00 0.00 0.00 207.00 463.50 725.00 908.00 961.00 459.50 198.50 34.50 0.00 a 3957.00
1950 0.00 0.00 0.00 15.50 317.00 677.50 834.50 729.00 562.50 222.50 6.50 0.00 3365.00
1951 0.00 0.00 0.00 87.00 546.00 605.50 873.50 746.00 426.00 194.00 0.00 a 0.00 3478.00
1952 0.00 0.00 1.50 325.50 450.50 754.00 881.50 811.50 613.50 128.50 12.00 0.00 3978.50
1953 0.00 0.00 6.50 49.50 423.00 722.00 873.50 959.50 496.00 385.00 48.00 0.00 3963.00
1954 0.00 0.00 0.00 101.50 318.00 705.00 936.00 800.50 463.00 166.50 19.50 0.00 3510.00
1955 0.00 0.00 0.00 a 286.03 a 569.00 733.50 1027.00 966.00 474.00 222.50 0.00 0.00 4278.03
1956 0.00 0.00 0.00 6.50 372.00 884.00 810.00 819.50 391.00 283.00 22.00 0.00 3588.00
1957 0.00 0.00 15.00 181.00 455.00 602.68 b 1046.00 851.00 432.00 209.00 0.00 0.00 3791.68
1958 0.00 9.50 14.00 166.00 518.50 560.50 811.50 834.00 549.00 222.50 20.00 0.00 3705.50
1959 0.00 0.00 13.00 113.50 397.00 787.00 935.50 929.50 504.00 85.50 0.00 0.00 3765.00
1960 0.00 0.00 0.00 117.50 518.00 675.00 887.00 893.00 551.50 220.00 0.50 0.00 3862.50
1961 0.00 0.00 16.50 66.00 410.00 863.00 919.50 1023.00 486.50 246.00 21.50 0.00 4052.00
1962 0.00 0.00 0.00 118.50 457.00 744.00 803.50 871.00 425.50 287.50 6.50 2.50 3716.00
1963 0.00 0.00 54.50 144.83 a 412.00 845.00 977.50 886.50 622.50 532.00 23.00 0.00 4497.83
1964 0.00 0.00 1.50 156.50 588.50 713.00 1015.50 789.00 486.00 178.00 49.00 0.00 3977.00
1965 0.00 0.00 0.00 62.00 342.50 646.50 780.00 727.50 205.00 180.00 11.00 0.00 2954.50
1966 0.00 0.00 8.50 39.00 304.00 683.50 917.00 758.00 514.00 149.00 0.00 0.00 3373.00
1967 0.00 0.00 23.00 42.00 310.50 645.00 835.50 770.00 588.50 143.50 8.00 0.00 3366.00
1968 0.00 0.00 29.00 119.50 301.00 556.50 810.50 704.00 480.50 127.00 1.50 0.00 3129.50
1969 0.00 0.00 0.00 152.50 403.00 446.00 795.00 936.00 496.00 72.00 11.00 0.00 3311.50
1970 0.00 0.00 0.00 46.50 364.00 897.00 987.00 863.50 538.00 200.00 4.00 0.00 3900.00
1971 0.00 0.00 2.00 172.50 449.00 798.50 729.50 847.00 531.00 214.00 0.00 0.00 3743.50
1972 0.00 0.00 0.00 79.50 532.50 716.00 714.00 825.50 387.50 128.00 0.00 0.00 3383.00
1973 0.00 0.00 16.50 111.00 444.00 694.00 814.00 944.50 458.00 307.00 2.00 0.00 3791.00
1974 0.00 0.00 0.00 97.50 284.50 737.50 1005.00 698.50 357.00 165.00 4.50 0.00 3349.50
1975 0.00 0.00 3.50 43.50 483.00 715.00 956.00 794.00 410.50 236.50 65.50 0.00 3707.50
1976 0.00 1.00 5.00 164.50 491.50 828.00 934.50 956.50 579.00 157.50 11.00 0.00 4128.50
1977 0.00 0.00 28.00 327.00 834.50 775.50 942.00 645.50 484.00 219.00 42.00 0.00 4297.50
1978 0.00 0.00 3.50 126.50 614.00 731.00 889.00 842.50 651.00 198.00 42.50 0.00 4098.00
1979 0.00 0.00 0.00 36.50 276.50 706.00 900.50 764.00 566.50 132.50 0.00 0.00 3382.50
1980 0.00 0.00 1.50 292.50 664.50 748.50 964.50 762.50 470.00 153.50 25.50 0.00 4083.00
1981 0.00 1.00 20.50 170.00 477.00 664.50 884.50 919.00 479.50 212.00 73.00 0.00 3901.00
1982 0.00 0.00 0.00 151.50 518.50 537.50 892.50 804.50 488.00 188.00 1.50 5.00 3587.00
1983 0.00 0.00 0.00 101.00 348.00 737.00 1006.50 1022.00 494.00 142.00 26.50 0.00 3877.00
1984 0.00 p 0.00 0.00 163.00 418.00 736.50 893.00 942.00 391.00 281.50 7.00 0.00 3832.00
1985 0.00 0.00 27.50 271.00 631.50 588.00 833.00 714.00 390.50 140.50 5.50 0.00 3601.50
1986 0.00 0.00 47.00 125.50 580.00 799.00 946.50 764.00 467.00 167.50 2.00 0.00 3898.50
1987 0.00 0.00 4.50 332.50 633.00 804.50 958.00 764.00 542.00 101.00 30.00 0.00 4169.50
1988 0.00 0.00 1.00 155.50 664.50 940.50 972.50 907.00 489.00 144.50 0.00 0.00 4274.50
1989 0.00 0.00 0.00 113.50 553.50 690.00 1050.50 911.00 537.00 208.50 1.00 0.00 4065.00
1990 0.00 0.00 25.50 183.50 427.50 763.50 883.00 921.50 610.00 157.50 16.50 0.50 3989.00
1991 0.00 0.00 z 17.50 205.00 656.50 861.00 919.00 972.50 520.50 127.00 0.50 0.00 4279.50
1992 0.00 0.00 6.00 127.50 567.50 643.50 704.50 755.50 456.50 223.50 0.00 0.00 3484.50
1993 0.00 0.00 3.50 88.00 484.50 653.50 795.00 834.50 406.50 116.50 2.00 0.00 3384.00
1994 0.00 0.00 4.00 135.00 577.00 810.00 847.00 817.00 635.00 297.50 13.00 0.00 4135.50
1995 0.00 0.00 z 17.00 53.00 441.00 914.00 908.00 929.50 527.50 155.00 0.00 0.00 3945.00
1996 0.00 0.00 0.00 41.50 411.50 841.50 886.50 924.00 550.00 191.00 3.50 0.00 3849.50
1997 0.00 0.00 0.00 z 105.00 393.00 903.50 962.00 914.00 668.50 0.00 z 0.00 z 0.00 z 3946.00
1998 0.00 1.00 13.50 235.00 572.00 642.00 892.00 932.00 610.50 179.00 0.00 0.00 4077.00
1999 0.00 a 0.00 9.82 a 162.50 473.50 703.00 901.00 787.50 405.00 114.00 26.00 0.00 3582.32
2000 0.00 2.79 c 44.00 131.50 430.50 638.00 907.00 843.50 467.50 207.00 24.00 0.00 3695.79
2001 0.00 0.00 0.00 151.00 491.00 698.50 921.00 911.50 537.50 129.50 47.00 0.00 3887.00
2002 0.00 0.00 1.50 114.50 278.00 796.00 961.50 813.50 583.50 38.50 4.00 0.00 3591.00
2003 0.00 0.00 17.00 181.00 425.00 710.00 873.00 939.50 502.50 266.00 0.00 0.00 3914.00
2004 0.00 0.00 5.50 96.00 307.00 600.50 798.00 607.00 594.00 185.00 15.00 0.00 3208.00
2005 0.00 0.00 8.50 216.50 401.50 784.50 920.50 797.00 599.00 164.50 18.00 0.00 3910.00
2006 0.00 0.00 0.00 270.50 501.50 787.00 1002.50 875.00 505.00 141.50 19.50 0.00 4102.50
2007 0.00 0.00 9.50 195.00 513.50 795.50 972.00 787.50 544.00 229.50 21.00 0.00 4067.50
2008 0.00 0.00 0.00 73.50 329.00 655.00 854.00 866.50 520.00 189.50 44.00 0.00 3531.50
2009 0.00 0.00 5.00 102.00 335.50 661.00 788.00 771.50 726.00 77.50 28.00 0.00 3494.50
2010 0.00 0.00 36.50 276.50 503.00 736.50 967.50 949.50 462.50 272.00 39.00 0.00 4243.00
2011 0.00 0.00 0.00 103.50 416.00 743.00 1003.00 917.50 578.50 337.00 27.00 0.00 4125.50
2012 0.00 0.00 157.00 212.00 539.50 791.50 1079.50 855.50 519.00 122.50 0.00 0.00 4276.50
2013 0.00 0.00 0.00 a 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 0.24 11.33 142.15 462.70 727.36 901.51 846.56 509.91 192.23 15.68 0.12 3790.10
S.D. 0.00 1.25 22.41 79.08 113.71 97.27 82.52 90.53 86.75 78.14 17.47 0.70 334.14
SKEW 0.00 6.70 4.61 0.66 0.53 -0.16 -0.23 -0.27 -0.32 1.45 1.25 6.14 -0.26
MAX 0.00 9.50 157.00 332.50 834.50 940.50 1079.50 1023.00 726.00 532.00 73.00 5.00 4497.83
MIN 0.00 0.00 0.00 6.50 276.50 446.00 704.50 607.00 205.00 38.50 0.00 0.00 2954.50
NO YRS 64 63 64 64 64 64 64 64 65 64 64 64 60