DELTA, COLORADO

Monthly Total Growing Degree Days

(052192)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 199912
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 9.00 0.54 b 78.50 295.50 548.00 833.50 1079.50 962.00 621.50 273.00 35.17 a 11.50 4747.71
1894 0.00 4.15 a 149.00 328.50 694.00 797.00 1108.50 742.00 i 600.00 310.50 22.24 a 11.00 4024.89
1895 0.50 12.50 129.50 368.50 631.00 761.50 1023.52 a 1054.50 791.38 a 435.66 c 0.50 0.00 a 5209.06
1896 2.50 5.37 b 153.50 416.25 b 569.00 h 656.00 j 0.00 z 345.00 q 477.86 b 0.00 z 0.00 z 0.00 1055.48
1897 0.00 0.00 49.50 358.50 707.50 873.50 1043.00 1034.00 802.50 339.00 56.00 0.00 b 5263.50
1898 0.00 a 9.00 44.00 412.76 a 558.00 914.00 1160.00 1061.00 649.50 257.00 75.00 1.00 5141.26
1899 0.00 14.00 155.00 318.00 541.50 491.00 k 1057.00 946.00 758.00 317.00 114.00 0.00 a 4220.50
1900 0.00 14.00 209.50 329.00 693.00 936.50 1110.00 985.50 638.50 374.50 55.50 0.00 5346.00
1901 1.50 48.00 68.50 352.00 684.00 834.00 1156.50 1074.50 710.50 411.00 64.00 22.00 5426.50
1902 0.00 20.50 35.00 362.50 611.00 882.00 914.00 991.50 663.50 311.50 83.50 0.00 4875.00
1903 0.00 0.00 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 291.50 f 582.00 749.50 967.00 941.50 466.50 h 252.00 0.00 z 0.00 z 3492.00
1905 0.00 z 0.00 z 0.00 z 0.00 z 548.18 a 889.00 1038.50 1002.00 748.00 260.50 65.50 0.00 4551.68
1906 0.00 25.00 131.00 349.50 597.00 819.50 1036.00 994.50 689.50 0.00 z 0.00 z 0.00 z 4642.00
1907 0.00 z 67.00 209.50 359.00 450.50 750.00 1054.50 988.00 699.50 489.00 64.00 0.00 5131.00
1908 0.50 39.50 143.50 328.00 477.50 763.50 1056.00 950.00 677.00 266.50 21.00 2.50 4725.50
1909 31.50 0.00 111.00 277.50 483.50 872.00 1101.00 1056.00 716.50 458.50 142.00 4.00 5253.50
1910 0.00 6.00 261.00 390.00 635.00 902.00 1111.00 1003.50 780.50 332.00 146.00 1.00 5568.00
1911 46.50 48.00 182.00 326.38 a 613.50 819.00 972.00 937.00 755.00 280.50 26.50 0.00 5006.38
1912 0.00 0.00 61.00 154.00 546.50 354.00 q 973.50 934.50 482.50 221.50 27.50 0.00 o 3401.00
1913 0.00 7.50 51.67 a 304.50 649.00 803.50 1130.00 1029.50 654.50 273.00 107.50 0.00 5010.67
1914 5.50 9.00 119.50 367.00 644.00 810.50 1020.50 978.00 737.00 344.00 63.00 0.00 5098.00
1915 0.00 0.00 98.00 423.50 498.00 781.50 1071.00 937.50 669.00 338.00 116.00 7.00 4939.50
1916 0.00 0.00 34.50 u 321.50 521.50 794.50 1016.50 899.00 651.50 313.50 60.00 16.00 4594.00
1917 0.00 27.00 36.00 214.00 403.00 740.50 1068.00 884.00 663.00 330.50 100.50 10.50 4477.00
1918 0.00 11.50 206.50 230.50 540.50 991.00 974.00 917.00 644.50 461.00 54.00 0.00 5030.50
1919 0.00 6.00 108.50 351.00 665.47 a 846.21 a 1086.50 981.00 748.45 a 248.00 44.00 0.00 5085.12
1920 0.00 27.50 59.00 175.50 611.50 793.00 1015.50 897.00 619.50 324.00 36.50 4.50 4563.50
1921 1.50 47.00 184.50 271.50 612.00 859.50 1042.00 957.50 715.86 a 471.50 108.10 a 43.00 5313.97
1922 4.50 32.50 116.00 238.00 579.00 923.50 1023.50 1046.50 744.00 350.50 38.50 5.50 5102.00
1923 2.00 0.00 64.50 326.00 591.50 783.00 1065.50 909.50 606.00 284.00 37.50 7.50 4677.00
1924 0.00 16.50 37.00 304.00 605.00 884.00 993.50 922.50 628.00 365.00 84.50 0.00 4840.00
1925 0.00 2.00 170.50 a 0.00 z 693.50 809.50 1040.00 876.50 690.00 343.50 24.00 0.00 4649.50
1926 0.50 19.50 138.47 a 427.50 643.00 840.00 a 962.50 992.50 687.00 413.33 a 64.00 19.00 5207.30
1927 1.50 18.85 b 112.00 360.50 629.30 a 823.50 980.50 896.00 686.00 382.00 119.00 0.00 5009.15
1928 11.50 9.00 166.00 269.00 669.50 757.00 980.00 923.50 727.50 396.00 65.00 0.00 4974.00
1929 0.00 a 0.00 67.00 248.50 569.50 845.00 1075.00 987.35 a 638.50 363.00 0.50 8.00 4802.35
1930 0.00 17.50 84.00 465.52 a 553.50 821.50 1034.50 979.50 682.76 a 317.50 26.00 0.00 4982.28
1931 0.00 2.50 93.00 361.50 574.00 907.50 1110.00 985.00 746.00 418.50 a 78.00 0.00 a 5276.00
1932 0.00 33.00 83.70 a 344.00 651.00 792.00 1057.50 972.00 683.50 333.00 14.50 4.50 4968.70
1933 0.00 0.00 113.50 207.50 506.00 950.50 1127.50 987.50 800.50 470.50 29.50 10.00 5203.00
1934 7.00 50.00 285.00 509.50 798.50 852.50 1170.50 1082.50 695.50 428.50 94.00 5.50 5979.00
1935 3.00 10.00 102.00 358.50 589.50 896.00 1110.50 1024.50 753.00 388.00 40.00 0.00 a 5275.00
1936 0.00 29.50 153.50 428.00 709.50 953.00 1113.00 1037.00 711.00 377.50 10.00 0.50 5522.50
1937 0.00 4.50 98.00 330.50 722.00 849.50 1097.00 1065.50 773.00 419.00 115.00 9.00 5483.00
1938 0.00 0.00 z 142.50 381.50 595.00 894.31 a 1005.50 1037.50 765.00 410.50 16.50 0.00 5248.31
1939 0.00 0.00 178.25 a 438.62 a 714.50 863.50 820.00 h 1050.00 806.25 b 378.00 58.00 7.50 4494.62
1940 0.00 36.50 177.50 368.00 751.50 974.00 1127.00 1031.50 786.50 417.50 47.00 0.00 5717.00
1941 0.00 35.00 143.00 275.00 698.00 791.50 1043.67 a 1010.00 673.97 a 401.00 70.00 2.50 5143.63
1942 0.00 2.00 37.00 403.00 597.50 859.50 1119.00 1030.00 731.50 446.00 127.00 3.00 5355.50
1943 10.00 25.00 130.00 533.50 623.00 856.00 1121.00 1021.00 791.00 452.50 48.50 3.00 5614.50
1944 0.00 9.50 85.00 241.50 675.50 807.00 1052.00 1034.50 794.50 388.50 h 115.50 0.00 4815.00
1945 0.00 28.50 60.50 238.50 694.50 741.50 1085.00 1077.50 744.00 469.00 69.00 0.00 5208.00
1946 0.00 10.00 161.50 509.00 558.50 889.00 1085.50 1032.50 746.00 339.50 23.00 12.00 5366.50
1947 1.50 18.00 151.00 361.00 728.00 785.50 1081.00 980.00 765.50 501.00 23.00 1.00 5396.50
1948 0.00 11.50 54.50 380.50 705.50 853.50 1048.50 980.00 800.50 383.50 22.00 15.00 5255.00
1949 0.00 2.00 118.00 411.50 640.00 832.00 1099.00 1016.50 785.00 331.50 42.00 7.50 5285.00
1950 3.50 32.50 114.00 398.00 567.50 861.00 1046.50 958.00 717.50 541.50 92.00 3.00 5335.00
1951 6.50 21.00 114.00 331.00 628.50 752.00 1063.00 939.50 686.50 342.00 20.50 0.00 4904.50
1952 6.50 0.00 51.00 341.50 673.50 899.48 a 1033.50 971.00 738.50 399.00 55.00 0.00 5168.98
1953 2.50 1.00 143.00 248.00 461.50 926.50 1064.50 885.50 708.50 336.00 65.50 0.00 4842.50
1954 6.50 21.50 89.00 425.00 695.00 881.00 1152.00 957.50 729.00 410.50 57.00 0.00 5424.00
1955 0.00 0.00 74.50 280.00 595.50 810.00 1078.50 1052.50 750.50 400.00 39.50 39.50 5120.50
1956 18.50 7.00 113.00 310.00 658.00 894.00 1011.50 901.00 738.50 389.50 7.50 4.50 5053.00
1957 3.00 41.00 111.50 248.00 475.50 804.50 983.00 958.00 607.00 345.50 36.50 1.00 4614.50
1958 0.00 34.00 42.00 215.50 719.00 924.00 1002.00 1043.50 715.00 376.00 83.00 7.00 5161.00
1959 0.00 10.50 90.50 356.00 667.00 954.00 1091.50 960.50 646.00 306.50 23.50 0.00 5106.00
1960 0.00 0.00 155.50 362.50 596.00 887.00 1063.00 977.50 752.00 349.00 77.00 0.00 5219.50
1961 0.00 23.00 122.00 302.00 679.00 929.00 1032.50 1016.00 524.00 345.50 17.00 11.50 5001.50
1962 0.00 48.00 66.50 435.00 620.50 832.00 981.00 957.50 702.00 402.50 90.50 4.00 5139.50
1963 0.00 19.50 127.50 341.50 726.50 817.50 1084.50 967.00 760.00 520.50 109.50 0.00 5474.00
1964 0.50 1.00 29.50 268.50 614.50 782.00 1079.50 915.50 650.50 408.00 44.00 6.50 4800.00
1965 8.00 11.50 72.50 293.00 546.50 748.00 998.00 928.00 564.50 370.00 152.00 6.50 4698.50
1966 0.00 0.50 154.00 328.00 692.00 874.50 1120.50 993.00 726.50 323.50 104.00 22.00 5338.50
1967 11.00 23.50 254.00 317.50 548.50 749.50 1039.00 961.50 734.00 407.00 61.50 0.00 5107.00
1968 0.50 16.50 95.00 181.00 530.00 808.50 1028.00 834.00 610.00 351.00 22.50 1.00 4478.00
1969 15.00 15.00 49.50 323.00 673.00 691.00 1031.00 1014.50 702.00 190.00 37.00 11.50 4752.50
1970 17.50 27.50 47.00 144.50 617.00 802.00 1015.50 1003.50 600.50 230.50 68.50 3.50 4577.50
1971 0.50 9.00 130.00 261.00 521.50 842.00 1037.50 1043.50 591.00 343.00 21.00 5.00 4805.00
1972 6.50 49.00 191.17 a 346.00 561.50 851.50 1014.00 975.00 651.50 0.00 z 9.50 0.00 z 4655.67
1973 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
1974 0.00 0.00 194.50 245.00 670.50 867.00 1038.00 900.50 646.50 425.00 42.50 0.00 5029.50
1975 1.50 0.00 0.00 z 0.00 z 0.00 z 0.00 z 1010.50 884.00 632.00 304.50 62.00 2.50 2897.00
1976 0.00 40.00 72.00 285.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 60.00 0.00 457.00
1977 0.00 0.50 44.00 403.50 624.00 995.00 1094.50 987.50 740.00 407.50 55.50 10.50 5362.50
1978 0.00 z 20.50 227.50 373.50 531.50 866.00 1024.00 928.50 678.00 376.50 91.00 0.00 z 5117.00
1979 0.00 b 0.00 z 54.00 314.50 584.19 b 819.50 1037.00 926.50 761.50 442.00 16.55 a 0.00 4955.74
1980 4.50 37.50 46.50 299.00 542.50 908.50 1102.00 1002.50 738.50 323.00 104.50 33.50 5142.50
1981 2.58 a 34.00 95.00 488.00 602.50 963.00 1129.50 1025.00 813.00 395.00 107.00 1.55 a 5656.13
1982 5.68 a 36.00 165.00 298.50 614.50 851.50 844.00 f 1052.50 713.00 268.50 50.00 4.50 4059.68
1983 1.00 18.00 105.00 246.00 502.00 765.50 1021.50 1094.50 797.50 429.50 111.00 0.00 5091.50
1984 0.00 5.00 83.50 260.50 418.00 i 329.00 t 1089.50 987.00 790.00 304.50 93.00 7.00 3620.00
1985 0.00 9.00 121.00 395.50 659.00 919.00 1067.50 0.00 z 688.00 433.00 136.03 a 3.50 4431.53
1986 12.50 80.50 243.87 a 367.50 603.00 890.50 953.00 982.50 626.50 358.50 26.00 o 7.50 5125.87
1987 2.77 c 10.50 62.00 403.97 a 626.50 881.38 a 0.00 z 928.00 649.00 426.00 95.00 0.00 4085.11
1988 0.00 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 0.00
1989 1.00 26.50 205.00 386.50 579.50 437.50 k 1027.50 760.50 442.00 456.00 64.50 k 0.00 3884.50
1990 0.00 16.50 194.00 401.50 537.00 913.50 1020.50 920.00 791.50 351.00 66.50 0.00 5212.00
1991 0.00 3.50 78.50 243.50 623.50 834.50 1013.00 1002.00 713.00 411.00 58.50 0.00 4981.00
1992 0.00 5.00 156.50 472.50 698.50 838.00 954.50 372.50 t 714.50 467.00 8.50 3.00 4318.00
1993 3.00 14.50 155.50 273.50 618.00 815.00 902.00 777.50 513.50 205.50 1.00 0.00 4279.00
1994 0.00 0.50 73.50 221.00 533.50 979.00 1081.50 1077.50 726.50 344.00 86.50 3.50 5127.00
1995 18.00 70.50 184.50 271.00 476.50 755.50 957.50 1070.00 736.00 318.00 108.00 43.00 5008.50
1996 2.00 54.50 135.50 302.00 716.50 894.00 1089.00 1037.00 658.00 350.00 72.00 8.50 5319.00
1997 0.00 4.50 188.00 231.00 635.50 882.50 571.00 m 987.00 760.00 395.00 51.00 0.00 4134.50
1998 0.50 11.41 a 157.50 85.50 p 0.00 z 788.00 1121.50 574.50 n 308.00 t 228.50 m 43.00 p 3.88 c 2082.78
1999 1.11 c 24.00 g 222.50 268.39 b 493.13 d 817.24 a 868.00 f 964.32 c 626.25 b 359.08 a 105.54 b 5.00 3862.56
Period of Record Statistics
MEAN 2.97 17.84 120.59 329.42 609.61 847.60 1051.32 978.51 696.71 366.43 61.89 5.19 5105.97
S.D. 6.69 17.72 58.38 78.95 76.18 64.16 54.93 62.87 75.61 70.01 37.05 8.70 306.38
SKEW 3.96 1.19 0.51 0.13 -0.19 0.14 -0.21 -0.73 -0.96 -0.10 0.38 2.79 -0.11
MAX 46.50 80.50 285.00 533.50 798.50 995.00 1170.50 1094.50 813.00 541.50 152.00 43.00 5979.00
MIN 0.00 0.00 29.50 144.50 403.00 691.00 902.00 760.50 442.00 190.00 0.50 0.00 4279.00
NO YRS 102 100 100 99 99 97 97 98 101 98 98 100 76