DENVER STAPLETON, COLORADO

Monthly Total Growing Degree Days

(052220)

Base Temperature = 40 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201301
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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1017.50 803.00 359.50 75.50 27.50 2283.00
1949 0.00 34.00 92.50 322.00 527.50 751.00 1003.00 972.50 696.50 317.00 263.00 35.50 5014.50
1950 50.00 88.00 100.00 254.50 406.00 797.50 895.50 894.50 615.50 617.50 120.00 52.00 4891.00
1951 36.00 49.50 58.50 174.50 533.50 629.00 1036.00 950.50 643.50 291.00 89.00 23.50 4514.50
1952 42.50 38.50 40.50 260.50 520.00 961.00 1025.50 999.00 767.00 418.00 72.50 13.50 5158.50
1953 116.50 49.00 160.00 181.00 431.00 889.50 1054.00 967.00 780.00 447.00 173.50 15.00 5263.50
1954 65.50 145.50 74.00 421.00 552.50 879.00 1139.00 1012.50 771.00 408.50 184.00 33.50 5686.00
1955 0.00 16.50 100.00 322.00 588.00 718.00 1100.50 1024.00 715.00 439.00 82.00 84.50 5189.50
1956 52.00 13.50 169.00 195.00 646.50 1001.50 998.50 921.00 765.00 496.50 81.50 49.00 5389.00
1957 4.50 89.50 81.00 149.00 437.50 774.50 1039.00 1010.50 640.50 367.00 57.00 77.50 4727.50
1958 9.50 85.00 39.50 172.00 673.00 842.50 939.50 1040.00 732.00 442.00 145.50 43.00 5163.50
1959 38.50 7.50 63.00 276.50 503.00 926.00 1009.50 1023.50 647.00 283.50 103.50 45.00 4926.50
1960 17.00 13.00 151.00 331.00 534.50 850.00 1027.00 1035.50 750.50 378.00 105.50 10.50 5203.50
1961 22.00 49.00 94.50 228.00 488.50 783.50 975.50 996.00 488.50 327.50 47.50 27.00 4527.50
1962 8.50 75.50 46.00 328.50 612.00 766.00 1018.50 1006.50 673.00 416.00 123.00 37.50 5111.00
1963 7.00 82.50 139.50 300.50 646.50 801.00 1078.50 890.50 776.00 557.50 112.50 20.50 5412.50
1964 21.50 11.00 51.00 241.00 582.50 749.00 1108.00 942.50 675.50 394.00 117.00 52.50 4945.50
1965 33.00 25.00 31.50 336.00 530.00 716.50 1012.50 936.00 475.50 467.50 142.00 59.50 4765.00
1966 14.50 0.00 175.50 194.00 582.50 738.00 1143.00 955.50 749.50 394.00 124.00 35.00 5105.50
1967 37.50 32.00 187.50 252.50 393.00 618.00 901.00 874.50 663.00 394.50 139.50 15.50 4508.50
1968 15.00 15.00 120.50 151.00 431.50 832.50 982.00 871.50 625.00 370.50 50.00 18.50 4483.00
1969 45.50 14.50 75.00 367.00 598.50 643.50 1075.00 1051.00 732.50 125.50 85.50 40.50 4854.00
1970 38.00 42.50 32.00 152.50 584.00 756.50 990.00 1049.00 585.50 222.00 84.00 26.50 4562.50
1971 63.00 22.50 117.50 259.00 438.00 869.00 947.50 1015.00 545.50 331.50 86.50 27.50 4722.50
1972 36.00 75.50 217.00 270.00 527.00 847.50 936.50 960.00 662.50 409.00 17.00 39.00 4997.00
1973 42.00 26.00 64.50 171.00 487.50 825.50 959.50 1036.50 597.50 451.50 118.00 33.50 4813.00
1974 21.50 32.00 189.00 267.50 669.50 852.00 1074.00 913.00 581.50 388.50 65.00 10.00 5063.50
1975 23.50 23.00 75.00 213.50 441.50 727.00 1014.00 953.00 585.50 430.50 134.00 82.00 4702.50
1976 36.00 91.50 92.00 279.00 516.00 790.00 1092.00 937.00 652.50 279.50 127.50 38.00 4931.00
1977 1.00 50.00 111.00 351.50 641.00 956.00 1063.00 936.00 796.50 410.50 124.50 71.00 5512.00
1978 0.00 14.00 199.00 316.00 465.00 806.50 1074.50 919.00 749.00 404.50 105.00 0.00 5052.50
1979 0.00 46.50 100.00 321.50 469.00 774.00 1043.50 913.00 787.50 447.00 34.00 57.00 4993.00
1980 22.50 49.00 50.50 268.50 531.00 958.00 1127.00 1027.00 773.50 400.00 193.00 151.50 5551.50
1981 41.00 105.00 100.50 492.00 528.00 910.50 1112.00 991.50 844.50 404.00 229.00 84.50 5842.50
1982 21.50 87.50 107.50 252.50 467.00 694.00 1011.00 1026.00 650.00 284.00 34.00 20.50 4655.50
1983 9.50 41.50 77.00 171.50 363.00 684.00 1030.00 1067.50 747.50 394.50 123.50 0.00 4709.50
1984 4.00 23.00 41.50 123.50 617.50 795.50 1081.00 985.50 628.50 230.50 73.00 41.00 4644.50
1985 7.00 22.00 109.50 339.00 618.00 838.50 1022.00 1002.50 597.00 341.00 56.00 9.00 4961.50
1986 94.50 120.00 244.50 308.00 518.00 908.00 1037.50 996.50 619.00 312.50 93.50 0.50 5252.50
1987 42.00 58.00 107.00 371.00 609.00 874.50 1065.00 950.50 670.50 371.50 127.00 53.00 5299.00
1988 18.00 45.00 119.00 332.50 588.00 955.00 1058.00 1042.00 668.50 434.50 132.50 29.50 5422.50
1989 27.00 26.50 228.50 365.00 590.00 762.00 1111.00 981.00 677.50 377.50 157.00 31.50 5334.50
1990 51.50 37.00 92.50 290.50 512.50 977.50 954.00 969.00 807.00 392.50 216.00 44.00 5344.00
1991 6.50 63.00 136.00 251.50 627.50 881.50 1025.50 974.50 674.50 405.50 55.00 19.00 5120.00
1992 17.50 67.50 136.50 444.00 637.50 782.00 945.50 880.00 756.00 429.00 37.00 3.50 5136.00
1993 19.00 12.00 146.00 256.00 583.50 793.00 1023.00 930.00 619.00 328.50 41.00 39.00 4790.00
1994 27.00 33.50 205.00 307.50 720.00 1004.50 1049.50 1084.00 814.50 375.50 91.50 49.50 5762.00
1995 39.00 124.00 148.00 154.50 312.00 667.00 978.00 1095.50 647.00 313.50 172.00 48.50 4699.00
1996 34.50 109.00 75.50 306.50 615.00 866.50 1045.50 985.50 634.50 383.50 93.50 77.50 5227.00
1997 52.00 27.00 201.50 187.50 550.00 859.00 1042.50 931.00 740.00 386.00 51.50 4.50 5032.50
1998 27.50 12.00 130.50 193.50 634.00 713.00 1061.50 970.50 835.00 334.50 157.50 65.50 5135.00
1999 32.50 80.50 192.50 200.00 490.00 766.50 1093.50 965.50 589.50 383.00 262.50 32.00 5088.00
2000 23.50 74.00 134.50 359.00 641.50 855.50 1143.50 1078.50 678.50 347.50 9.50 1.00 5346.50
2001 25.50 5.00 94.50 302.00 556.50 882.00 1131.50 1023.00 a 761.00 357.00 205.50 13.00 5356.50
2002 27.50 43.00 77.00 359.50 525.00 974.00 1157.00 998.50 714.50 238.50 88.00 29.00 5231.50
2003 72.00 30.00 154.00 361.50 545.00 719.00 1174.00 1065.50 621.00 527.00 55.50 25.00 5349.50
2004 14.00 36.00 226.00 281.50 596.00 712.50 954.00 844.50 667.50 332.00 93.00 29.00 4786.00
2005 53.00 29.50 87.00 229.50 527.00 774.50 1122.00 938.50 756.50 369.50 168.50 49.00 5104.50
2006 60.50 26.00 110.00 359.00 624.00 950.00 1071.00 966.00 537.50 319.50 135.50 43.50 5202.50
2007 2.00 14.50 249.00 231.50 561.50 826.50 1097.50 1048.00 720.00 419.00 174.00 28.00 5371.50
2008 18.00 19.00 87.00 189.50 487.50 811.00 1104.00 954.00 625.50 350.50 162.50 26.50 4835.00
2009 74.50 66.00 180.00 208.00 0.00 z 697.50 922.00 909.50 644.50 168.50 152.00 12.00 4034.50
2010 7.00 0.00 91.00 244.50 427.50 858.50 1027.50 1031.50 784.00 448.00 100.00 38.50 5058.00
2011 16.50 40.00 125.50 245.00 360.50 816.50 1087.58 a 1089.50 664.00 384.00 96.50 10.00 4935.58
2012 59.00 5.00 309.50 391.50 624.00 1009.50 1171.00 1048.00 764.00 350.50 184.00 53.00 5969.00
2013 43.00 9.50 114.00 3.00 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 166.50
Period of Record Statistics
MEAN 30.58 44.58 122.08 272.44 540.38 819.52 1043.61 982.68 687.08 375.06 113.99 36.35 5075.28
S.D. 23.50 33.43 60.25 79.29 85.51 96.68 66.82 58.57 83.23 81.12 56.42 25.96 331.85
SKEW 1.12 0.96 0.78 0.29 -0.43 0.08 -0.17 -0.16 -0.26 -0.24 0.55 1.52 0.35
MAX 116.50 145.50 309.50 492.00 720.00 1009.50 1174.00 1095.50 844.50 617.50 263.00 151.50 5969.00
MIN 0.00 0.00 31.50 123.50 312.00 618.00 895.50 844.50 475.50 125.50 9.50 0.00 4483.00
NO YRS 65 65 65 64 63 64 64 65 65 65 65 65 63