STERLING, COLORADO

Monthly Total Growing Degree Days

(057950)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201104
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
1895 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
1896 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
1897 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
1898 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
1899 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
1900 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
1901 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
1902 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
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 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1904 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
1905 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
1906 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
1907 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
1908 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
1909 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 25.00 j 0.00 0.00
1910 9.00 13.50 301.50 336.50 434.50 805.50 945.50 950.15 a 727.22 c 434.00 95.00 1.50 5053.87
1911 11.37 a 5.50 150.50 274.50 570.50 888.50 948.50 902.50 726.50 260.50 28.50 0.00 4767.37
1912 2.07 a 1.04 a 0.00 255.00 516.50 691.50 962.50 913.50 464.50 292.50 68.50 0.00 4167.60
1913 9.50 8.00 60.00 306.50 588.48 a 814.00 894.00 933.00 460.00 146.00 30.50 0.00 4249.98
1914 13.50 12.50 112.50 281.50 533.00 833.00 988.00 956.00 700.00 387.00 92.50 0.00 4909.50
1915 0.00 5.00 15.00 366.00 420.50 660.00 893.00 820.50 642.00 389.00 129.50 12.50 4353.00
1916 5.50 39.36 a 220.50 240.52 a 435.00 714.50 1080.87 a 1090.74 d 458.50 j 244.26 b 69.64 b 6.00 4146.88
1917 0.00 20.50 70.00 278.50 465.00 816.00 1141.00 848.00 759.00 321.00 172.00 18.00 4909.00
1918 32.00 35.50 177.00 84.50 677.23 e 976.15 d 975.50 1095.50 798.50 657.31 d 0.00 z 20.00 5529.20
1919 0.00 0.00 76.50 272.00 505.00 817.78 c 1094.30 a 981.50 752.00 158.50 34.00 2.00 4693.58
1920 7.00 18.50 85.00 95.00 536.50 805.34 a 1001.82 a 834.33 b 638.00 360.00 36.60 e 3.50 4421.59
1921 3.00 g 32.15 a 128.13 a 207.00 533.00 871.00 1119.00 640.00 g 655.50 404.50 84.00 12.00 4046.28
1922 0.00 8.00 64.50 163.50 494.00 841.00 919.50 1008.50 683.00 339.00 13.50 3.00 4537.50
1923 25.00 0.00 22.00 175.50 434.00 766.00 982.50 865.79 c 598.00 206.00 22.24 a 3.50 4100.53
1924 0.00 31.50 5.00 188.50 333.00 708.50 892.00 944.50 538.50 316.50 52.00 2.50 4012.50
1925 0.00 10.50 87.50 308.00 564.50 846.50 1019.50 932.50 684.31 a 186.50 31.50 12.00 4683.31
1926 0.00 14.00 70.00 258.50 578.00 772.50 976.50 992.60 e 606.50 349.50 43.00 12.00 4673.10
1927 7.00 56.50 52.00 258.50 599.00 726.50 941.00 815.50 630.00 383.50 85.50 0.00 4555.00
1928 25.00 2.00 115.00 222.50 590.00 601.50 963.00 918.50 600.00 286.50 37.50 0.00 4361.50
1929 0.00 0.00 a 48.50 205.00 478.00 764.00 1015.50 1028.00 542.00 335.50 0.00 k 0.00 4416.50
1930 0.00 35.00 43.50 456.72 a 465.52 a 841.50 1055.00 992.00 683.00 355.50 73.00 0.00 5000.74
1931 8.50 16.00 92.00 441.50 499.50 968.50 1099.00 977.00 832.00 458.00 100.50 0.00 5492.50
1932 0.00 59.55 a 59.00 351.00 631.50 827.50 1116.50 1057.50 702.00 278.50 75.00 6.00 5164.05
1933 0.00 3.00 112.50 240.50 495.00 1015.00 1117.50 964.50 789.00 436.00 118.50 32.50 5324.00
1934 5.00 57.50 144.00 348.00 772.00 922.00 1149.50 1061.00 577.00 504.00 125.50 0.50 5666.00
1935 14.47 a 27.00 135.00 196.50 359.00 797.50 1138.00 1031.00 643.45 a 331.00 20.00 0.00 4692.92
1936 1.50 15.00 28.86 b 295.50 631.50 890.00 1146.00 1043.50 679.00 257.00 41.00 0.00 a 5028.86
1937 0.00 2.50 25.00 227.00 630.50 739.00 1096.50 1107.50 740.50 295.50 34.82 b 0.00 4898.82
1938 0.00 16.50 100.50 324.00 492.00 870.50 1032.50 1086.50 711.00 398.00 21.50 0.00 5053.00
1939 0.00 0.00 136.29 b 287.00 612.50 799.50 1081.50 931.00 714.50 302.00 35.50 77.50 4977.29
1940 0.50 22.00 101.50 201.50 569.50 872.50 1065.50 924.00 756.50 422.00 25.00 5.00 4965.50
1941 0.00 8.50 64.00 253.50 673.00 759.50 972.50 972.00 608.00 279.50 52.50 3.10 a 4646.10
1942 0.00 0.00 17.00 363.50 461.50 748.00 1004.00 944.00 574.14 a 394.50 98.00 4.00 4608.64
1943 27.50 54.38 b 96.10 a 401.00 422.50 763.50 1085.50 1056.50 607.24 a 278.50 51.50 0.00 4844.23
1944 6.00 0.00 17.00 151.00 622.00 791.50 976.00 989.00 622.24 a 351.50 90.00 0.00 4616.24
1945 4.00 11.00 82.00 158.00 468.00 581.00 987.50 932.50 519.00 349.00 63.62 a 5.50 4161.12
1946 0.00 17.50 163.50 436.00 384.50 809.00 1064.50 945.00 643.50 243.50 14.00 33.50 4754.50
1947 7.50 6.00 67.00 208.50 474.00 666.50 1021.50 1052.50 713.50 443.00 7.76 a 4.50 4672.26
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 999.00 745.50 285.00 44.50 3.00 2077.00
1949 0.00 9.00 74.00 324.50 580.00 766.50 1022.00 962.50 610.50 260.50 149.00 2.00 4760.50
1950 20.50 45.50 59.50 215.50 369.50 830.50 971.50 886.50 629.00 483.00 91.50 18.50 4621.00
1951 3.50 27.00 45.50 166.50 566.50 645.00 906.50 985.00 583.00 304.50 34.00 10.00 4277.00
1952 5.50 11.50 37.00 275.00 525.00 949.50 1079.00 994.00 714.00 361.67 a 70.50 0.00 5022.67
1953 13.50 26.50 161.50 189.50 472.00 912.00 1093.00 1008.00 756.50 451.00 109.00 6.50 5199.00
1954 14.50 101.50 59.00 385.50 516.50 883.50 1148.00 1012.00 784.50 301.50 102.00 5.50 5314.00
1955 0.00 2.00 60.50 315.50 611.50 712.50 1095.50 1095.00 717.00 406.00 27.50 17.00 5060.00
1956 5.00 6.50 129.50 204.00 603.00 954.50 1000.00 870.50 597.00 347.00 45.50 13.00 4775.50
1957 0.00 36.00 46.00 185.00 460.50 776.00 1046.77 a 994.00 562.78 c 329.00 40.50 15.50 4492.04
1958 0.00 46.00 6.00 177.50 689.00 837.00 929.00 1015.50 718.50 335.00 67.50 9.50 4830.50
1959 3.50 0.00 50.00 264.00 543.50 959.00 1013.50 1014.50 608.00 229.50 46.00 7.50 4739.00
1960 0.00 0.00 120.00 336.50 528.00 806.50 1011.00 988.50 655.50 335.83 a 61.00 0.00 4842.83
1961 1.00 40.00 69.50 177.00 472.00 827.50 1002.00 1014.50 512.00 301.00 36.00 5.17 a 4457.67
1962 0.50 71.50 56.83 a 334.50 632.00 784.00 994.50 945.50 610.00 355.50 83.00 14.00 4881.83
1963 0.00 53.50 134.50 336.50 692.50 943.50 1143.00 981.00 756.50 501.50 70.00 1.00 5613.50
1964 9.00 0.00 25.00 254.50 634.95 c 756.00 1137.50 908.50 623.04 b 332.50 71.50 18.50 4770.98
1965 3.50 16.00 9.50 296.00 544.00 763.00 1039.00 888.50 384.31 a 395.00 114.00 9.50 4462.31
1966 0.00 0.00 128.00 206.50 593.50 803.00 1129.00 890.50 663.50 286.00 52.00 6.00 4758.00
1967 12.50 9.00 169.50 310.50 410.50 696.50 1019.00 952.50 621.50 354.00 77.50 0.00 4633.00
1968 10.00 14.50 138.50 187.00 442.50 908.00 1038.00 906.00 611.00 361.00 54.00 8.50 4679.00
1969 5.50 4.50 42.00 365.50 648.50 701.00 1086.00 1060.00 757.00 159.50 63.50 7.00 4900.00
1970 26.50 27.00 31.50 175.50 653.50 824.50 1073.00 1082.50 587.50 228.00 53.50 23.00 4786.00
1971 23.50 13.50 71.50 282.50 467.00 917.50 1013.00 1061.50 564.00 308.00 59.50 6.00 4787.50
1972 0.00 54.50 195.50 278.00 564.50 898.50 956.50 961.00 628.00 303.00 0.00 0.00 4839.50
1973 3.50 5.50 f 60.50 178.50 504.50 866.00 1005.00 1050.00 561.00 367.00 47.50 2.00 4645.50
1974 0.00 6.50 134.50 272.00 656.50 886.50 1153.00 923.00 559.00 405.50 53.00 1.50 5051.00
1975 3.00 5.00 77.00 240.00 501.50 814.00 622.00 n 1029.50 624.00 387.00 112.00 18.50 3811.50
1976 18.00 77.00 90.00 304.00 542.50 852.00 1139.50 1020.50 729.50 260.50 59.00 10.50 5103.00
1977 0.00 27.50 81.50 348.00 705.50 1021.00 931.50 f 992.00 c 796.50 369.50 72.50 21.50 4435.50
1978 0.00 2.00 158.50 323.00 512.50 877.50 1137.91 b 516.00 n 686.50 251.62 a 50.00 0.00 a 3999.53
1979 0.00 12.00 104.88 a 300.50 486.00 816.00 e 1059.54 c 896.86 b 738.00 386.00 14.00 0.00 a 4813.78
1980 0.50 20.94 b 23.00 f 251.00 539.40 a 927.41 a 1166.00 1003.37 a 682.24 a 286.00 109.29 b 64.87 d 5051.02
1981 8.00 41.00 71.50 387.50 392.15 a 878.40 e 1031.78 a 908.62 b 730.50 317.23 a 95.50 23.00 4885.19
1982 0.00 50.00 72.00 198.00 478.50 679.00 1032.00 1034.00 667.00 259.50 38.00 10.50 4518.50
1983 17.00 48.50 89.50 185.00 422.00 708.00 1055.00 1156.50 761.00 381.00 125.00 0.00 4948.50
1984 0.00 0.50 34.00 111.50 572.50 789.50 1072.00 1090.50 632.50 264.00 53.50 14.47 a 4634.97
1985 1.55 a 6.00 173.50 0.00 z 667.00 794.00 1077.50 997.00 618.50 276.00 47.50 0.00 4658.55
1986 1.00 59.00 206.50 314.50 495.00 934.50 1077.00 995.50 671.00 347.50 55.00 0.00 5156.50
1987 16.00 61.50 25.50 373.50 679.50 938.50 1114.00 1014.45 b 700.50 362.50 113.50 35.50 5434.95
1988 0.00 23.50 140.50 289.50 636.50 1050.50 1110.50 1130.00 694.50 412.00 134.50 14.00 5636.00
1989 0.00 21.50 223.50 376.00 672.50 813.00 1170.52 b 1022.00 693.00 371.50 115.00 19.00 5497.52
1990 17.50 11.41 a 100.50 329.50 517.00 1041.50 1033.00 1005.50 839.50 353.00 170.00 5.50 5423.91
1991 6.50 47.50 114.00 296.00 666.50 949.50 1100.00 1055.50 751.50 405.00 48.00 1.50 5441.50
1992 7.00 55.00 180.50 397.50 675.50 812.50 974.50 929.50 748.50 390.50 36.50 0.00 5207.50
1993 0.00 0.00 144.00 255.00 631.50 824.00 1015.00 993.50 589.00 351.00 24.50 5.00 4832.50
1994 3.00 22.50 189.50 326.50 740.50 1018.50 1073.50 1136.00 802.50 389.50 65.00 18.00 5785.00
1995 4.50 93.50 183.50 185.00 381.00 800.00 1100.50 1179.50 725.00 309.00 115.00 0.00 z 5076.50
1996 12.00 101.50 73.50 298.50 565.00 915.00 1046.00 1003.88 a 655.00 381.00 49.50 38.00 5138.88
1997 24.50 24.00 169.50 239.00 551.00 895.50 1093.50 990.50 773.50 400.00 55.50 0.00 5216.50
1998 5.00 25.00 117.05 b 249.50 685.50 728.00 1106.50 1028.00 892.50 336.00 99.50 31.00 5303.55
1999 18.50 49.50 152.42 a 226.00 568.00 850.00 1128.00 1024.00 620.00 366.50 204.00 23.50 5230.42
2000 2.50 64.50 117.50 347.00 664.50 873.00 1197.00 1131.00 720.50 424.50 10.50 0.00 5552.50
2001 1.50 3.00 81.00 304.66 a 603.00 915.50 1193.00 1090.00 784.00 343.14 b 162.50 1.00 5482.29
2002 15.00 26.50 63.00 373.00 568.00 1046.00 1215.00 1040.50 751.50 244.00 73.00 18.00 5433.50
2003 32.00 28.00 168.50 411.00 688.50 892.50 1329.00 1178.50 673.00 368.50 0.00 z 0.00 z 5769.50
2004 5.50 t 35.50 222.00 380.50 673.00 794.50 1038.00 916.50 762.50 387.50 94.00 16.50 5320.50
2005 41.50 32.50 124.00 0.00 z 551.50 851.40 e 1150.00 1005.00 549.50 l 378.50 199.00 30.50 4363.90
2006 42.50 21.58 d 115.50 425.00 687.50 1019.00 1195.50 1052.50 558.50 328.50 123.00 11.50 5580.58
2007 0.00 b 2.50 266.60 a 261.00 686.50 892.50 1174.50 1151.00 782.50 420.00 175.00 21.00 5833.10
2008 0.00 17.00 106.50 225.00 555.50 862.50 1163.00 1003.00 689.00 344.00 149.50 7.00 5122.00
2009 44.50 55.00 190.28 b 256.00 615.00 817.76 a 1036.36 b 985.50 682.00 179.50 76.50 f 3.50 4865.40
2010 1.50 0.00 104.50 0.00 z 297.50 t 937.50 1134.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2177.50
2011 0.00 z 0.00 z 0.00 z 30.50 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 0.00
Period of Record Statistics
MEAN 7.43 24.84 100.94 274.22 554.63 836.20 1059.24 995.29 670.07 339.53 72.35 9.64 4914.08
S.D. 10.38 23.93 61.11 80.12 95.46 98.07 81.24 77.78 88.80 79.50 44.22 13.00 406.29
SKEW 1.76 1.16 0.68 0.05 -0.10 -0.02 0.17 0.08 -0.34 0.30 0.90 2.57 0.15
MAX 44.50 101.50 301.50 456.72 772.00 1050.50 1329.00 1179.50 892.50 657.31 204.00 77.50 5833.10
MIN 0.00 0.00 0.00 84.50 333.00 581.00 892.00 815.50 384.31 146.00 0.00 0.00 4012.50
NO YRS 98 99 99 97 99 100 98 98 98 100 96 99 84