GRAND CANYON HQ, ARIZONA

Monthly Total Growing Degree Days

(023591)

Base Temperature = 40 F

File last updated on Apr 3, 2013
*** Note *** Provisional Data *** After Year/Month 195708
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
1903 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 272.00 n 301.06 e 261.00 115.00 677.06
1904 6.00 0.00 z 0.00 z 0.00 z 0.00 z 616.50 951.00 903.50 756.50 333.50 80.50 0.00 a 3647.50
1905 0.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 600.50 228.00 116.50 0.00 945.00
1906 0.00 0.00 z 0.00 z 39.00 232.00 547.50 801.50 684.00 0.00 z 611.00 253.50 76.00 3244.50
1907 6.50 140.00 0.00 z 336.50 363.50 505.50 0.00 z 734.00 548.50 293.50 34.00 4.50 2966.50
1908 0.00 z 0.00 z 54.50 175.00 264.00 0.00 z 0.00 z 0.00 z 512.00 107.00 59.00 0.00 1171.50
1909 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 695.00 785.00 0.00 z 520.00 197.50 0.00 z 0.00 z 2197.50
1910 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 638.00 0.00 z 0.00 z 0.00 z 638.00
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 750.00 547.50 174.50 0.00 0.00 1472.00
1912 0.00 0.00 0.00 61.50 228.00 564.50 691.00 0.00 z 0.00 z 116.50 4.14 a 0.00 1665.64
1913 0.00 0.00 16.00 383.00 472.00 614.00 807.50 854.00 562.50 201.50 a 37.22 c 0.00 3947.72
1914 4.00 4.50 88.00 183.00 580.00 604.20 e 764.67 a 834.50 632.22 c 311.50 92.00 0.00 4098.59
1915 0.00 0.00 48.71 c 169.00 289.85 a 640.50 827.00 800.32 a 495.00 256.00 81.00 3.00 3610.38
1916 0.00 19.50 134.50 180.00 391.00 639.50 729.53 a 672.50 512.00 215.50 70.71 b 2.50 3567.25
1917 0.00 0.00 29.00 134.50 244.00 705.00 942.50 805.50 600.00 373.50 107.50 41.33 a 3982.83
1918 14.50 17.50 68.50 153.50 328.00 831.00 823.00 763.00 639.50 314.02 d 57.50 0.00 a 4010.02
1919 0.00 0.00 32.00 207.50 488.00 709.50 903.98 c 913.00 674.00 122.50 63.00 14.00 4127.48
1920 5.50 j 8.00 25.50 j 92.00 460.00 716.00 888.50 798.52 b 538.33 c 0.00 z 7.50 g 0.00 c 3501.35
1921 2.50 23.50 62.52 a 110.77 d 297.50 642.00 873.50 796.00 647.50 404.00 70.50 16.50 3946.79
1922 0.00 15.50 31.00 123.00 484.50 812.00 967.00 643.00 h 688.00 380.50 24.00 0.00 3525.50
1923 30.00 10.00 5.00 127.00 490.00 236.50 r 918.00 792.50 515.00 234.50 35.50 2.00 3159.50
1924 0.00 23.50 0.00 208.00 560.00 878.50 848.50 811.00 694.00 276.50 98.00 11.00 4409.00
1925 0.00 2.50 117.00 274.00 585.00 679.00 956.00 775.00 536.50 232.00 27.50 5.00 4189.50
1926 0.00 21.00 46.50 192.00 451.00 820.50 931.19 e 902.50 679.00 432.00 111.00 32.50 i 4586.69
1927 26.00 12.00 57.00 274.50 567.00 710.50 925.00 790.00 602.00 333.50 120.00 2.07 a 4419.57
1928 5.50 7.00 99.50 212.00 479.50 825.50 973.00 871.00 744.50 363.00 49.50 4.50 4634.50
1929 2.50 0.00 86.00 176.00 517.50 731.90 a 923.00 853.00 641.00 392.50 76.50 31.00 4430.90
1930 0.00 52.50 35.00 344.50 326.50 763.50 873.00 836.00 623.50 261.50 92.00 0.00 4208.00
1931 8.00 0.00 81.50 286.00 525.00 781.00 1041.50 899.00 667.00 369.00 104.50 6.00 4768.50
1932 0.00 14.50 64.50 262.50 451.50 760.00 997.00 961.00 767.50 368.00 134.50 3.50 4784.50
1933 1.00 0.50 121.50 178.50 369.50 875.50 1045.00 929.50 768.00 452.60 a 124.00 40.50 4906.10
1934 0.00 25.50 219.50 363.50 643.00 636.50 1004.50 873.50 661.00 436.00 160.50 4.00 g 5023.50
1935 11.00 19.50 47.00 158.50 g 348.00 845.00 923.50 893.50 682.00 354.50 19.00 0.00 4143.00
1936 0.00 0.00 75.50 342.50 593.50 846.50 931.50 846.00 567.50 315.50 65.00 2.50 4586.00
1937 0.00 1.00 23.00 186.50 598.50 725.50 940.85 a 758.50 f 743.79 a 457.50 119.00 7.00 3802.64
1938 1.50 0.50 19.50 262.00 468.44 d 775.50 918.12 a 862.32 a 719.50 328.00 12.00 26.00 4393.38
1939 0.00 0.00 109.00 319.00 562.00 759.00 982.00 938.50 605.00 270.00 72.50 61.00 4678.00
1940 14.50 13.50 122.00 221.50 575.00 857.50 980.50 901.50 594.50 350.00 58.00 21.50 4710.00
1941 0.00 7.50 52.00 63.50 458.00 630.50 917.50 800.00 549.00 203.00 103.00 3.00 3787.00
1942 12.00 3.00 36.00 197.50 435.00 783.50 989.50 882.50 695.50 333.50 139.00 38.50 4545.50
1943 23.50 20.00 109.00 368.50 543.00 692.00 949.50 858.18 a 693.50 348.00 89.50 0.00 4694.68
1944 0.00 2.00 35.50 96.50 407.50 600.50 883.00 938.00 726.00 419.50 57.00 2.50 4168.00
1945 5.68 a 24.00 34.00 127.50 f 509.95 a 645.00 935.50 876.50 709.00 413.50 77.50 3.50 4234.13
1946 5.50 23.50 69.75 a 301.00 462.00 766.00 868.50 831.50 677.50 205.00 16.50 39.50 4266.25
1947 0.00 13.50 89.50 213.50 570.00 661.50 901.50 628.00 f 764.50 374.50 27.50 5.50 3621.50
1948 25.50 18.50 13.00 262.00 523.00 712.00 909.50 836.50 704.50 348.00 31.50 4.00 4388.00
1949 0.00 0.00 27.50 286.00 414.00 653.00 883.00 825.00 704.00 239.50 155.50 4.50 4192.00
1950 3.00 g 17.04 e 68.00 302.00 418.50 731.00 863.00 797.00 595.00 534.50 133.00 41.85 a 4500.89
1951 10.00 28.50 49.00 208.00 472.50 666.50 981.00 829.50 708.00 312.00 27.50 5.00 4297.50
1952 0.00 2.00 14.00 195.00 530.62 a 742.50 871.00 859.00 700.50 496.50 55.50 0.00 4466.62
1953 21.00 15.50 85.50 213.50 319.50 752.68 b 964.50 838.55 a 690.00 371.50 162.00 7.00 4441.23
1954 11.50 52.00 37.50 360.50 592.50 704.46 b 944.00 839.38 e 677.22 c 426.50 95.00 5.00 4745.57
1955 0.00 2.50 53.50 184.50 452.71 b 655.80 e 902.50 880.00 709.50 458.80 a 84.00 36.68 a 4420.49
1956 39.50 2.00 125.00 207.00 534.50 850.50 884.50 817.50 759.00 372.00 39.50 2.00 4633.00
1957 1.60 b 63.00 64.50 169.00 303.50 777.93 a 900.00 275.50 v 0.00 z 0.00 z 0.00 z 0.00 z 2279.53
Period of Record Statistics
MEAN 6.03 15.46 62.11 217.15 452.65 717.13 906.45 838.97 646.79 327.39 82.05 13.90 4336.91
S.D. 9.48 23.57 42.97 87.27 109.45 90.08 73.98 62.53 78.59 105.32 54.97 22.87 337.45
SKEW 1.80 3.49 1.15 0.08 -0.45 -0.09 -0.73 -0.48 -0.31 0.06 1.18 2.46 -0.48
MAX 39.50 140.00 219.50 383.00 643.00 878.50 1045.00 961.00 768.00 611.00 261.00 115.00 4906.10
MIN 0.00 0.00 0.00 39.00 228.00 505.50 691.00 672.50 495.00 107.00 0.00 0.00 3567.25
NO YRS 48 47 46 47 49 49 49 45 51 52 51 50 34