FT COLLINS, COLORADO

Monthly Total Growing Degree Days

(053005)

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
1893 31.50 9.50 59.00 163.45 a 0.00 z 0.00 z 0.00 z 832.50 0.00 z 0.00 z 0.00 z 0.00 z 1095.95
1894 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 691.00 0.00 z 0.00 z 575.50 354.50 106.00 4.65 a 1731.65
1895 1.00 13.50 77.50 289.00 412.50 586.00 785.00 850.00 627.93 a 248.52 a 62.00 12.00 3964.95
1896 11.50 14.00 98.00 263.79 a 530.00 760.00 936.50 892.80 a 564.50 254.00 50.00 19.50 4394.59
1897 0.50 4.85 b 34.10 a 208.50 576.82 c 697.78 c 831.50 835.50 703.50 301.50 99.50 14.50 4308.55
1898 3.50 18.00 11.50 256.00 383.00 720.00 901.50 928.00 559.50 219.00 41.00 0.00 4041.00
1899 0.00 0.00 20.50 224.50 434.00 707.50 837.00 858.00 642.50 209.00 78.50 9.00 4020.50
1900 4.50 2.50 79.50 151.50 550.00 812.50 865.00 867.50 560.00 329.50 62.00 8.50 4293.00
1901 10.50 11.50 52.00 209.00 527.00 698.50 1006.00 897.50 571.00 299.50 58.00 16.00 4356.50
1902 4.00 16.00 13.50 196.00 499.50 707.50 807.00 889.50 417.00 f 276.00 40.00 0.00 3449.00
1903 28.50 0.00 32.00 203.00 378.50 578.50 882.00 872.50 508.00 300.00 48.00 7.00 3838.00
1904 0.00 78.50 82.00 210.00 425.50 597.00 795.50 839.50 576.00 276.50 65.50 16.00 3962.00
1905 0.00 12.50 112.50 164.00 380.00 742.50 795.00 876.50 615.00 185.50 50.00 0.00 3933.50
1906 11.00 15.00 22.00 228.00 467.50 655.00 773.00 842.50 560.00 249.50 77.00 23.50 3924.00
1907 0.00 36.50 171.02 a 171.00 311.00 622.50 861.00 834.00 565.00 307.00 30.50 5.00 3914.52
1908 3.50 4.23 e 127.50 256.50 381.00 643.50 856.00 789.00 661.00 253.50 52.00 0.00 4027.73
1909 20.50 1.00 33.00 143.00 367.00 729.50 940.50 939.00 562.50 300.50 113.50 2.50 4152.50
1910 15.00 9.85 a 229.00 309.50 430.00 736.50 954.00 843.00 645.50 377.00 79.50 2.00 4630.85
1911 44.00 5.50 123.50 221.50 495.00 784.00 817.50 814.00 648.50 235.00 30.00 2.00 4220.50
1912 14.00 1.50 1.50 147.50 411.50 569.50 797.50 802.00 352.50 177.50 34.00 0.00 a 3309.00
1913 11.88 a 3.00 55.50 220.00 460.50 697.00 832.00 920.00 484.00 191.00 68.00 0.00 3942.88
1914 0.00 0.00 53.00 184.50 457.00 691.50 877.00 837.50 620.00 319.50 75.00 0.00 4115.00
1915 0.00 3.00 14.50 301.50 343.00 588.50 766.00 707.00 513.00 290.00 101.50 14.50 3642.50
1916 1.50 16.50 185.50 179.50 373.50 657.00 912.00 791.50 525.00 210.00 36.50 6.00 3894.50
1917 4.50 15.00 25.83 a 137.00 243.50 675.50 930.50 777.50 594.00 277.00 109.00 43.50 3832.83
1918 19.50 35.00 152.50 97.00 446.00 814.50 842.50 823.00 439.50 343.00 36.50 15.00 4064.00
1919 0.00 5.00 73.50 231.50 453.00 720.50 972.00 875.50 644.00 124.00 27.41 a 4.00 4130.41
1920 33.00 1.50 40.30 a 70.50 443.00 665.00 893.00 807.00 555.00 281.00 25.00 7.50 3821.80
1921 18.00 33.00 134.50 175.00 474.00 751.00 902.50 863.50 597.00 382.50 69.50 43.40 a 4443.90
1922 3.00 12.00 60.50 145.50 474.50 788.50 879.50 969.50 669.50 279.50 12.00 9.00 4303.00
1923 34.50 0.00 4.00 165.00 449.50 674.00 932.00 834.50 527.14 b 174.50 28.50 10.50 3834.14
1924 1.00 28.00 0.00 177.00 352.00 722.50 880.50 883.50 505.50 318.00 84.00 26.50 3978.50
1925 0.00 18.50 136.50 315.00 540.50 778.50 958.00 829.50 632.00 140.50 15.00 5.00 4369.00
1926 0.00 18.00 46.00 231.00 488.00 720.50 846.50 881.50 547.00 348.00 63.00 6.00 4195.50
1927 22.50 10.50 26.00 220.00 503.50 657.00 856.50 749.00 575.50 313.50 94.00 0.00 4028.00
1928 36.50 4.00 91.00 181.03 a 487.00 520.50 864.00 812.50 555.50 241.00 23.00 7.00 3823.03
1929 0.00 0.00 49.50 174.50 394.00 710.50 944.00 928.50 480.00 297.00 11.00 4.13 a 3993.13
1930 0.00 36.50 30.00 357.00 344.50 741.00 939.00 876.00 578.50 224.50 50.50 0.00 4177.50
1931 3.50 4.50 55.28 a 234.00 414.50 836.00 991.00 876.50 700.50 331.50 68.79 a 14.50 4530.58
1932 1.00 53.50 41.50 253.50 517.50 704.00 987.50 913.50 591.50 236.50 72.00 8.50 4380.50
1933 0.00 11.00 83.00 186.67 c 419.00 865.50 994.50 844.50 686.00 386.50 121.00 79.50 4677.17
1934 17.50 31.50 145.50 279.50 542.50 f 785.00 1040.05 a 934.00 483.50 407.00 126.50 1.00 4251.05
1935 18.50 33.00 103.00 189.00 278.00 699.50 989.50 915.50 577.50 282.00 11.00 0.00 4096.50
1936 24.00 20.50 55.50 314.00 594.50 832.00 1041.50 925.00 629.00 262.00 45.00 2.00 4745.00
1937 0.00 9.50 25.32 a 179.00 532.50 694.50 979.08 a 997.50 682.50 350.50 53.00 11.50 4514.90
1938 2.00 14.00 115.00 284.00 441.50 739.50 926.00 961.50 682.00 424.59 c 42.50 8.00 4640.59
1939 2.00 0.00 121.00 306.00 610.50 761.50 1044.50 890.00 716.50 323.50 49.50 88.00 4913.00
1940 0.00 38.00 154.43 d 277.50 568.00 846.50 1009.71 c 907.50 694.00 357.50 33.00 13.50 4899.64
1941 0.00 6.50 55.50 154.14 a 555.50 679.00 904.00 856.50 523.50 249.50 72.50 14.00 4070.64
1942 1.50 0.00 17.50 278.00 416.00 684.31 a 924.00 854.50 564.50 302.50 65.50 12.40 a 4120.71
1943 54.00 26.00 78.00 354.50 369.50 688.00 965.50 950.50 574.50 286.00 53.00 0.00 4399.50
1944 6.50 15.00 12.50 115.50 495.50 698.00 897.50 931.00 581.50 325.50 66.00 4.00 4148.50
1945 20.50 16.50 80.50 147.50 468.50 557.50 924.50 884.00 528.50 334.00 81.00 16.50 4059.50
1946 5.50 12.00 136.92 a 390.50 362.50 753.00 955.50 864.38 a 567.50 217.50 24.50 33.50 4323.30
1947 18.00 6.50 49.50 189.50 446.50 613.00 925.50 930.50 703.50 417.50 5.00 10.00 4315.00
1948 4.00 10.00 52.00 295.00 495.48 a 738.00 934.50 889.50 726.50 285.00 37.00 10.00 4476.98
1949 0.00 10.50 42.00 296.50 490.50 708.50 939.00 901.50 595.00 230.00 188.00 7.50 4409.00
1950 17.50 29.50 76.50 234.50 357.00 736.00 829.50 785.50 561.00 414.00 84.50 22.00 4147.50
1951 22.50 43.50 23.00 145.00 471.50 560.00 947.50 837.00 547.00 216.50 27.00 7.00 3847.50
1952 2.50 3.50 9.00 222.50 485.00 865.00 923.50 891.50 659.00 280.00 27.50 0.00 4369.00
1953 57.50 23.50 93.00 171.50 398.00 825.50 973.00 876.50 664.00 353.00 99.00 4.50 4539.00
1954 16.00 86.00 45.50 381.00 514.00 816.00 1075.00 918.00 679.50 337.00 116.50 18.50 5003.00
1955 0.00 0.00 63.00 276.50 550.00 662.50 1023.50 966.00 631.00 350.00 41.00 37.50 4601.00
1956 9.50 0.00 114.00 164.50 566.50 894.00 932.00 830.00 679.50 363.50 59.50 14.00 4627.00
1957 0.00 41.00 33.00 127.00 387.00 743.00 980.50 922.50 550.00 330.00 24.00 30.00 4168.00
1958 0.00 36.50 10.50 149.50 625.50 806.00 866.00 979.50 671.50 374.00 76.50 17.50 4613.00
1959 5.50 0.00 34.00 238.00 455.50 835.50 961.00 969.00 550.50 216.00 56.00 9.50 4330.50
1960 1.00 1.50 121.00 292.00 478.00 809.00 958.00 921.50 674.00 317.50 47.00 0.52 a 4621.02
1961 2.50 38.50 53.00 206.50 494.00 756.50 919.00 928.50 441.00 271.50 22.50 4.00 4137.50
1962 0.00 45.00 41.85 a 292.00 549.00 691.50 886.50 871.50 591.50 384.00 104.50 11.00 4468.35
1963 1.50 54.00 100.50 247.50 575.50 803.00 1035.50 898.00 720.00 454.50 68.50 4.00 4962.50
1964 11.00 0.00 22.00 214.50 555.50 711.50 1050.00 838.00 589.50 328.50 71.00 45.00 4436.50
1965 13.50 15.00 14.00 270.50 479.50 698.00 951.50 844.50 399.50 407.00 109.50 37.50 4240.00
1966 11.00 1.00 145.50 202.50 590.00 742.50 1078.50 860.00 648.50 290.00 60.50 6.00 4636.00
1967 18.00 30.50 180.00 275.00 402.00 613.00 931.50 860.50 606.00 380.50 89.00 5.00 4391.00
1968 11.50 24.00 113.00 139.00 403.00 813.50 948.50 834.00 565.00 330.50 34.50 8.50 4225.00
1969 14.00 7.00 48.00 350.50 552.50 606.50 1006.00 979.50 665.00 113.50 44.00 18.00 4404.50
1970 24.00 25.50 27.50 135.00 110.00 z 739.50 966.50 977.50 548.00 193.00 68.00 11.00 3715.50
1971 50.50 19.50 81.50 230.00 445.00 832.00 900.00 942.50 490.00 301.50 47.50 17.00 4357.00
1972 9.50 68.50 228.50 258.50 512.00 828.50 881.00 881.00 602.00 329.00 14.00 13.00 4625.50
1973 18.50 3.00 20.50 131.50 492.50 803.00 895.00 967.00 558.00 367.00 41.00 4.50 4301.50
1974 20.00 14.50 149.00 234.50 632.50 794.00 1003.00 820.50 542.50 362.50 44.50 1.50 4619.00
1975 15.00 22.00 79.50 187.50 412.50 705.50 980.50 904.50 578.50 378.50 103.50 38.00 4405.50
1976 13.00 51.00 75.50 263.00 501.00 746.00 1007.50 879.00 613.50 225.50 83.00 6.00 4464.00
1977 0.00 36.50 78.50 327.50 609.00 937.00 1018.50 872.50 736.00 365.50 74.00 49.50 5104.50
1978 0.50 4.50 176.50 294.50 446.00 791.50 1004.50 869.50 694.50 324.00 82.50 0.00 4688.50
1979 0.00 15.50 78.00 286.55 a 443.50 745.00 988.00 840.00 713.00 408.50 8.50 19.00 4545.55
1980 9.50 11.00 31.00 232.00 445.00 875.50 1040.00 907.50 676.50 302.00 131.50 101.50 4763.00
1981 2.00 53.50 65.50 431.00 455.00 859.50 994.00 885.50 737.50 290.00 146.50 38.50 4958.50
1982 18.50 74.00 101.50 237.50 470.50 653.50 960.00 984.50 585.50 262.00 18.00 6.50 4372.00
1983 11.00 31.50 79.50 158.00 388.50 673.50 986.50 1047.00 678.00 350.50 86.50 0.50 4491.00
1984 4.50 8.00 25.50 125.00 588.50 728.50 1006.00 955.50 596.50 219.00 75.00 26.00 4358.00
1985 2.50 3.50 102.50 360.50 608.00 781.50 970.00 916.00 557.00 277.00 48.50 0.00 4627.00
1986 31.50 99.50 219.00 283.50 505.00 850.00 963.00 908.00 564.00 282.00 56.50 0.00 4762.00
1987 32.00 32.00 53.00 340.00 567.50 813.00 983.00 873.50 608.50 320.00 94.00 34.00 4750.50
1988 4.00 15.50 105.00 289.00 571.50 906.00 980.50 955.50 602.50 411.00 99.50 2.00 4942.00
1989 11.00 10.50 169.50 343.50 567.00 719.00 1017.50 880.00 609.00 338.00 119.50 27.00 4811.50
1990 36.50 26.50 48.00 258.00 468.50 883.00 901.50 899.00 743.50 314.50 142.00 16.00 4737.00
1991 5.00 32.00 118.50 246.50 574.00 784.50 946.50 918.50 625.50 382.00 46.00 11.50 4690.50
1992 3.50 64.00 122.50 387.50 585.50 724.50 864.00 800.50 682.00 395.00 25.50 0.00 4654.50
1993 0.00 0.50 135.00 227.00 561.00 722.00 919.50 846.50 544.00 279.00 22.50 5.50 4262.50
1994 14.00 11.50 159.00 290.50 648.50 895.50 945.50 938.50 696.50 307.00 64.50 10.50 4981.50
1995 20.50 88.50 163.50 162.50 336.00 684.50 939.50 1027.50 610.00 294.50 151.00 35.50 4513.50
1996 24.00 78.50 62.50 290.00 552.50 810.00 978.50 899.00 593.50 346.00 64.50 25.50 4724.50
1997 31.00 19.00 181.50 201.00 549.50 811.50 972.00 897.00 695.00 364.00 51.50 8.50 4781.50
1998 24.50 11.00 122.00 235.00 609.50 686.00 1023.50 963.00 793.00 308.50 128.00 28.50 4932.50
1999 24.50 65.00 166.00 195.50 498.00 740.50 1031.50 940.00 551.50 318.50 191.50 29.50 4752.00
2000 11.00 69.00 125.50 362.00 665.00 790.00 1069.50 1007.00 676.00 321.00 9.50 1.50 5107.00
2001 15.00 2.00 82.00 327.50 542.50 852.00 1071.00 986.00 721.50 319.00 141.50 10.50 5070.50
2002 19.00 41.00 74.50 368.50 506.00 939.50 1120.50 942.00 681.00 223.00 73.00 14.00 5002.00
2003 48.00 26.00 150.50 327.50 569.50 703.00 1139.50 1014.50 593.00 489.00 52.50 12.00 5125.00
2004 6.50 24.00 247.50 308.00 633.50 714.00 943.50 836.50 652.50 340.50 77.00 30.00 4813.50
2005 39.00 34.00 122.00 280.00 544.00 786.00 1094.00 932.00 716.50 357.50 135.00 30.00 5070.00
2006 53.50 34.50 101.00 404.00 639.00 948.00 1084.00 981.50 556.00 290.00 114.00 24.00 5229.50
2007 1.50 9.00 250.00 284.00 572.50 857.00 1106.00 1026.00 706.00 379.00 151.50 26.50 5369.00
2008 5.00 31.00 91.50 235.50 0.00 z 784.00 1066.00 895.50 605.50 325.50 144.50 13.50 4197.50
2009 73.00 47.50 169.00 251.50 605.00 712.00 932.00 886.50 675.00 174.50 122.50 2.00 4650.50
2010 0.50 0.50 116.00 270.00 465.00 845.50 1028.00 1007.50 744.50 435.00 90.00 26.00 5028.50
2011 23.50 20.50 172.50 272.00 413.50 823.00 1078.50 1063.50 673.50 393.50 63.00 12.00 5009.00
2012 36.00 17.00 336.00 445.50 630.50 979.50 1115.50 1016.50 738.50 300.50 121.50 28.00 5765.00
2013 12.50 4.00 112.00 5.50 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 128.50
Period of Record Statistics
MEAN 13.23 22.07 89.15 241.01 485.92 745.73 949.44 894.97 610.23 305.82 68.98 14.92 4443.74
S.D. 14.83 22.01 62.22 75.54 87.00 89.41 80.81 64.59 78.30 70.24 39.54 17.05 409.07
SKEW 1.49 1.40 1.00 0.32 -0.17 0.06 -0.04 0.15 -0.32 -0.27 0.73 2.44 0.23
MAX 73.00 99.50 336.00 445.50 665.00 979.50 1139.50 1063.50 793.00 489.00 191.50 101.50 5765.00
MIN 0.00 0.00 0.00 70.50 243.50 520.50 766.00 707.00 352.50 113.50 5.00 0.00 3309.00
NO YRS 120 120 120 119 115 119 118 119 118 119 119 119 114