RIFLE, COLORADO

Monthly Total Growing Degree Days

(057031)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200711
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
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 548.50 h 312.07 a 95.00 1.55 a 408.62
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 692.50 236.00 12.00 0.00 940.50
1912 0.00 0.00 37.50 144.31 a 451.50 723.00 915.00 891.00 454.00 225.50 23.50 0.00 3865.31
1913 0.00 1.50 38.50 292.00 594.50 750.50 934.00 999.50 559.50 200.00 66.50 0.00 4436.50
1914 0.00 0.00 52.00 290.00 540.50 715.00 968.00 914.50 663.50 289.00 51.00 0.00 4483.50
1915 0.00 0.00 a 73.50 376.00 446.00 677.00 948.00 890.00 599.50 286.00 70.00 3.00 4369.00
1916 0.00 0.00 128.00 275.00 436.00 731.00 975.00 830.00 586.00 241.50 37.50 2.50 4242.50
1917 0.00 9.50 32.50 152.50 327.00 707.50 1033.50 862.00 641.00 289.00 87.50 8.50 4150.50
1918 0.50 1.50 125.50 182.50 497.00 896.00 919.50 884.00 607.00 351.50 35.00 0.00 4500.00
1919 0.00 0.00 a 76.50 302.00 578.00 783.00 1041.00 939.00 681.50 156.50 18.00 0.00 4575.50
1920 0.00 a 0.00 21.50 124.50 532.00 706.00 941.50 828.22 a 521.50 245.50 10.18 b 0.00 3930.90
1921 2.00 8.00 97.50 181.03 a 499.50 748.00 927.00 841.00 604.50 368.00 45.00 10.00 4331.53
1922 1.50 10.00 63.00 170.00 476.50 782.50 934.00 945.00 660.50 272.50 11.50 0.00 4327.00
1923 0.00 0.00 21.00 198.00 504.50 689.50 997.50 834.50 543.00 169.50 9.50 0.00 3967.00
1924 0.00 7.50 14.00 191.00 468.50 750.50 936.00 883.00 571.50 281.58 a 52.50 0.00 4156.08
1925 0.00 0.00 120.38 a 348.00 644.00 748.97 a 1014.50 844.00 682.24 a 283.00 11.90 a 0.50 4697.49
1926 2.00 5.70 a 68.72 a 317.50 480.50 a 779.00 955.00 945.50 579.00 220.50 i 19.00 0.00 z 4151.92
1927 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
1928 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
1929 0.00 z 0.00 z 0.00 z 0.00 z 526.00 769.00 1080.35 a 886.17 b 0.00 z 0.00 z 0.00 z 0.00 z 3261.52
1930 0.00 z 0.00 z 52.00 375.00 422.50 729.00 1020.00 948.00 579.00 315.50 22.50 0.00 4463.50
1931 0.00 0.00 32.00 319.00 510.98 a 921.50 1034.00 927.00 640.00 0.00 z 88.50 0.00 4472.98
1932 0.00 0.00 a 60.50 260.50 527.00 760.00 1033.50 967.00 580.00 211.00 2.00 10.00 4411.50
1933 0.00 a 0.00 a 74.50 177.00 419.50 838.50 1065.88 a 888.00 730.00 331.50 20.50 0.00 4545.38
1934 0.00 20.00 119.00 350.00 731.00 736.00 1085.50 1056.00 571.50 326.50 134.00 0.00 5129.50
1935 1.50 14.50 31.00 280.00 444.16 b 836.00 1053.50 949.00 638.50 239.50 3.00 0.00 4490.66
1936 0.00 2.50 46.50 337.50 647.90 a 916.50 1087.00 949.00 576.50 394.50 2.50 0.00 4960.40
1937 0.00 0.00 79.50 418.50 678.50 629.00 866.00 852.00 556.00 199.43 a 0.00 z 0.00 4278.93
1938 0.00 9.00 57.50 304.00 471.50 789.00 922.00 897.00 639.00 319.30 a 9.00 0.00 4417.30
1939 0.00 0.00 107.47 a 317.50 571.00 560.50 g 960.50 758.00 f 697.50 290.50 59.00 4.50 3007.97
1940 0.00 19.00 117.50 288.50 622.50 845.00 1018.50 931.00 673.00 347.00 17.50 0.00 4879.50
1941 0.00 18.00 71.50 193.00 560.00 655.50 920.00 887.50 537.50 333.25 e 0.00 z 0.50 k 4176.25
1942 6.50 0.00 19.00 291.00 459.00 723.50 937.50 874.00 579.83 a 329.50 73.00 0.00 4292.83
1943 2.50 18.00 79.50 408.00 440.00 667.50 978.50 893.32 a 504.50 g 335.50 34.50 0.00 3857.32
1944 0.00 0.00 23.00 131.00 515.00 658.00 876.00 857.00 635.00 408.00 86.00 0.00 4189.00
1945 0.00 12.00 44.00 169.50 532.00 583.50 942.00 929.00 569.00 361.00 44.00 0.00 4186.00
1946 0.00 1.50 125.50 356.00 469.00 770.50 1020.50 915.50 625.00 196.50 4.50 6.00 4490.50
1947 0.00 4.50 74.50 207.50 558.50 630.50 964.50 948.50 717.50 300.50 h 17.00 0.00 4123.00
1948 0.00 3.00 17.00 273.50 589.00 752.00 923.00 852.00 671.50 312.50 5.00 0.00 4398.50
1949 0.00 0.00 64.00 306.00 522.50 686.00 939.50 949.50 611.50 261.00 53.00 0.50 4393.50
1950 0.00 12.00 50.00 269.50 402.00 681.00 874.00 807.00 608.50 439.00 65.50 0.00 4208.50
1951 0.00 6.50 43.92 a 256.15 d 530.10 a 629.00 972.00 882.50 561.00 261.50 14.50 0.00 4157.17
1952 0.00 0.00 5.00 263.28 a 514.50 765.52 a 757.00 f 866.00 638.00 330.50 38.00 0.00 3420.79
1953 0.00 5.50 88.72 b 171.00 365.80 a 767.50 989.00 823.50 638.00 317.00 41.90 a 0.00 4207.92
1954 0.50 14.50 60.40 b 343.00 578.50 721.00 811.50 g 668.50 f 632.50 341.00 a 33.00 0.00 f 2724.40
1955 0.00 0.00 23.50 184.50 506.00 671.50 956.50 945.50 608.57 b 292.50 3.50 9.00 4201.07
1956 0.50 0.00 54.00 220.00 572.39 c 791.00 909.50 771.50 625.50 328.00 6.50 6.50 4285.39
1957 0.00 3.50 72.50 205.50 372.50 673.00 887.00 882.00 548.00 0.00 z 24.00 0.00 3668.00
1958 0.00 25.50 35.00 143.00 582.50 780.00 874.50 999.50 643.00 351.50 70.50 0.00 z 4505.00
1959 0.00 2.00 43.00 240.00 512.50 768.50 847.50 787.50 479.50 199.50 20.00 0.00 3900.00
1960 0.00 0.00 84.98 b 234.00 401.50 691.00 888.00 831.50 646.00 259.00 32.00 0.00 4067.98
1961 0.00 1.50 55.00 175.00 522.50 738.50 916.50 923.50 416.50 222.00 1.50 1.00 3973.50
1962 0.00 21.50 18.50 252.50 426.50 632.50 806.52 a 782.23 a 576.00 317.50 35.00 1.00 3869.75
1963 0.00 11.50 68.50 240.00 533.72 a 670.00 960.50 871.50 668.00 424.50 66.00 0.00 4514.22
1964 0.00 0.00 12.50 172.50 475.00 671.50 995.50 844.50 591.50 0.00 z 27.50 0.00 3790.50
1965 2.00 1.50 30.50 210.50 446.50 654.00 911.50 832.00 0.00 z 307.00 105.00 5.00 3505.50
1966 0.00 0.00 93.50 226.00 538.50 733.50 1014.50 897.00 662.00 249.00 78.00 17.50 4509.50
1967 0.00 11.00 153.00 229.00 460.50 659.46 b 964.50 908.00 657.50 320.00 65.00 0.00 4427.96
1968 0.00 1.00 50.00 111.50 438.00 767.00 923.50 771.00 519.00 304.00 16.00 0.00 3901.00
1969 0.00 3.50 43.00 289.00 614.50 645.50 950.00 975.50 651.00 115.50 15.00 2.50 4305.00
1970 1.50 6.50 18.00 105.00 507.50 704.50 940.50 920.00 524.00 151.50 36.00 0.00 3915.00
1971 0.00 2.50 74.50 205.00 416.50 738.00 940.50 937.75 a 476.50 266.50 0.50 0.50 4058.75
1972 0.00 34.00 144.50 237.00 477.50 774.00 947.00 888.00 597.00 337.00 1.50 0.00 4437.50
1973 0.00 2.00 24.50 144.00 459.50 0.00 z 866.00 889.00 545.00 308.00 0.00 z 2.00 3240.00
1974 0.00 0.00 108.50 178.00 557.50 766.00 944.50 832.35 a 567.50 335.00 9.00 0.00 4298.35
1975 0.00 0.00 34.00 123.00 352.00 615.50 920.50 806.50 550.50 242.00 32.50 0.00 3676.50
1976 0.00 1.50 26.50 195.00 462.50 657.00 971.50 813.50 588.00 200.50 31.50 0.00 3947.50
1977 0.00 1.00 26.50 327.00 507.00 863.50 974.00 907.00 658.50 319.00 49.00 5.50 4638.00
1978 0.00 0.50 131.50 280.00 443.50 755.00 951.50 845.00 609.00 327.00 78.50 0.00 4421.50
1979 0.00 0.00 41.50 244.50 476.00 693.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 1455.00
1980 0.00 z 0.00 z 0.00 z 221.00 440.50 757.00 0.00 z 852.00 614.00 0.00 z 76.00 8.50 2969.00
1981 0.00 5.50 30.50 336.50 468.50 835.50 1004.50 894.50 742.00 267.00 70.50 0.00 4655.00
1982 0.00 6.50 61.00 195.50 440.50 681.00 951.50 969.00 620.50 190.00 21.00 3.00 4139.50
1983 0.00 4.50 77.00 137.00 375.00 665.50 931.50 1016.50 717.50 337.00 78.50 0.00 4340.00
1984 0.00 0.00 37.50 134.50 576.00 662.50 974.00 941.50 632.00 180.00 0.00 z 0.00 4138.00
1985 0.00 0.00 53.50 278.50 543.00 766.00 965.00 952.50 518.00 288.50 35.00 0.50 4400.50
1986 0.50 61.00 183.00 272.00 482.50 804.00 933.50 912.00 534.50 274.50 27.50 0.00 4485.00
1987 0.00 3.50 36.50 311.50 517.00 791.00 908.50 857.00 632.50 375.50 75.00 5.00 4513.00
1988 0.00 6.50 42.50 282.00 502.00 883.00 1003.50 952.00 569.00 439.00 68.50 0.00 4748.00
1989 0.00 6.50 159.50 361.50 551.50 736.00 1021.00 899.50 661.00 318.00 0.00 z 0.00 4714.50
1990 0.00 z 9.50 157.50 352.00 494.50 850.00 969.50 909.00 767.00 291.00 46.50 0.00 4846.50
1991 0.00 3.00 41.50 176.50 504.00 734.50 921.00 911.00 610.50 347.00 30.00 0.00 4279.00
1992 0.00 11.50 128.00 397.00 628.00 734.50 851.50 861.00 632.50 392.50 4.50 0.00 4641.00
1993 0.00 1.50 107.50 207.50 532.50 737.00 0.00 z 853.50 562.00 307.50 6.50 0.00 3315.50
1994 0.00 11.50 134.00 275.00 580.22 a 481.00 o 1017.00 1000.00 681.00 277.50 47.00 0.00 l 4023.22
1995 0.00 52.50 111.50 209.00 231.00 j 454.00 j 871.00 978.00 649.50 244.50 59.00 12.50 3187.50
1996 0.00 18.00 99.50 143.50 j 552.00 765.56 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1435.06
1997 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 226.50 m 27.00 0.00 27.00
1998 1.00 11.50 116.50 205.00 366.00 j 672.00 1096.50 1000.50 801.00 363.00 72.50 6.50 4346.00
1999 0.00 c 23.69 b 171.57 b 223.50 259.00 i 764.40 e 796.50 h 969.30 c 613.80 e 379.75 c 134.42 d 6.95 b 3287.39
2000 12.29 b 27.84 d 70.86 c 356.38 a 659.55 b 847.20 e 1097.06 d 1046.80 c 681.96 b 380.27 a 1.15 d 0.00 g 5181.37
2001 0.00 7.50 108.50 f 316.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 324.00
2002 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 152.00 m 5.50 0.00 5.50
2003 1.00 1.22 e 119.00 301.67 c 632.00 831.00 1201.50 884.50 f 674.50 410.00 f 46.00 f 9.00 3770.88
2004 0.00 21.50 276.50 386.50 430.00 i 567.50 k 1016.00 650.50 j 365.00 o 0.00 z 0.00 z 0.00 z 1700.50
2005 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
2006 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
2007 0.00 10.00 166.50 258.00 521.50 799.50 1116.00 1037.00 666.96 b 200.00 g 63.50 0.00 z 4638.96
2008 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
2009 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
2010 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
2011 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
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 322.06 d 91.00 19.00 432.06
2013 0.00 0.00 105.00 19.00 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 105.00
Period of Record Statistics
MEAN 0.41 7.27 73.49 249.73 507.62 739.03 964.81 900.50 613.60 294.49 40.10 2.01 4326.56
S.D. 1.55 10.76 48.43 77.05 76.42 71.58 68.35 63.29 67.62 67.67 31.66 3.96 286.64
SKEW 6.04 2.66 1.22 0.15 0.26 0.36 0.64 0.21 -0.12 -0.28 0.79 2.35 0.20
MAX 12.29 61.00 276.50 418.50 731.00 921.50 1201.50 1056.00 801.00 439.00 134.42 19.00 5129.50
MIN 0.00 0.00 5.00 105.00 327.00 583.50 806.52 771.00 416.50 115.50 0.50 0.00 3676.50
NO YRS 87 88 88 88 85 84 82 83 84 80 84 84 58