TWIN LAKES RSVR, COLORADO

Monthly Total Growing Degree Days

(058501)

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
1949 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
1950 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
1951 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
1952 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
1953 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
1954 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
1955 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
1956 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
1957 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
1958 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
1959 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
1960 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
1961 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
1962 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
1963 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
1964 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
1965 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
1966 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
1967 0.00 z 0.00 z 0.00 z 0.00 z 114.00 287.50 567.50 439.00 297.60 e 112.50 4.50 0.00 e 1822.60
1968 0.00 b 0.00 0.00 0.00 65.50 329.00 500.50 424.50 176.00 45.50 0.00 0.00 f 1541.00
1969 0.00 0.00 0.00 k 8.00 181.50 252.00 551.50 562.50 285.00 22.50 0.00 0.00 1863.00
1970 0.00 n 0.00 l 0.00 2.50 92.00 295.00 534.50 533.50 208.50 33.00 5.17 a 0.00 1704.17
1971 0.00 0.00 5.50 7.00 50.50 276.00 454.00 479.00 201.00 45.50 k 0.50 3.00 1476.50
1972 0.00 0.00 k 0.00 8.28 a 73.00 281.00 445.00 409.00 186.50 f 68.64 c 0.00 0.00 1284.92
1973 0.00 0.00 0.00 1.50 48.50 234.00 405.50 378.20 a 137.00 71.00 2.00 0.00 g 1277.70
1974 0.00 0.00 0.00 c 4.50 96.50 261.00 467.00 352.00 183.50 39.50 0.00 0.00 a 1404.00
1975 0.00 f 0.00 j 0.00 c 8.50 33.67 b 191.50 m 486.50 382.00 185.50 16.00 0.50 0.00 1112.67
1976 0.00 0.00 0.00 z 0.00 41.00 209.50 477.00 368.50 220.50 15.00 0.00 0.00 1331.50
1977 0.00 0.00 0.00 6.00 87.50 393.50 506.00 417.50 231.50 11.50 0.00 0.00 1653.50
1978 0.00 0.00 0.00 h 12.50 j 89.00 i 280.00 h 369.50 k 351.50 h 295.50 49.00 n 7.50 j 0.00 k 295.50
1979 0.00 i 2.00 i 0.00 k 11.00 i 109.50 f 308.50 521.83 d 339.00 h 197.00 m 110.50 i 0.00 l 0.00 l 830.33
1980 0.00 k 0.00 k 0.00 l 9.50 i 58.00 j 301.00 i 368.00 m 371.00 j 226.00 i 85.50 j 17.50 h 1.00 k 0.00
1981 0.00 k 0.00 k 0.00 i 37.50 f 108.50 h 466.73 d 411.50 i 383.00 f 329.50 52.50 j 0.50 k 0.00 j 796.23
1982 0.00 k 0.00 j 0.00 i 6.72 a 97.65 a 304.00 509.00 527.00 273.50 13.50 k 0.50 k 0.00 k 1717.87
1983 0.00 j 0.00 i 0.00 2.07 a 67.00 274.50 545.00 569.50 357.00 33.00 k 7.00 k 0.00 m 1815.07
1984 0.00 j 0.00 k 0.00 i 1.00 i 141.22 d 289.00 537.00 475.33 d 180.00 k 9.00 j 0.00 l 0.00 m 1442.56
1985 0.00 i 0.00 i 0.00 j 11.00 h 177.50 413.00 405.50 h 398.00 i 154.00 k 31.00 i 3.00 l 0.00 l 590.50
1986 0.00 l 0.00 i 0.50 j 26.00 139.00 421.50 514.50 373.00 j 154.50 j 42.50 i 1.00 l 0.00 j 1101.00
1987 0.00 0.00 j 0.00 j 36.50 146.50 409.50 381.50 j 323.00 k 194.00 j 76.00 j 3.00 k 0.00 j 592.50
1988 0.00 m 0.00 j 0.00 a 9.00 j 162.00 436.50 561.00 553.00 144.50 k 70.00 k 7.00 m 0.00 j 1712.50
1989 0.00 k 0.00 i 1.55 a 40.50 j 184.50 323.00 382.50 k 491.00 204.00 j 66.50 l 2.00 j 0.00 l 1000.05
1990 0.00 j 0.00 j 0.00 i 14.00 i 106.00 451.00 381.50 j 496.52 a 205.50 l 41.50 i 2.50 j 0.00 p 1053.52
1991 0.00 j 0.00 i 0.00 j 0.54 b 127.50 332.50 342.50 i 337.00 i 176.00 j 97.50 i 0.00 l 0.00 k 460.54
1992 0.00 j 0.00 k 0.00 j 34.00 j 168.50 278.50 429.50 270.50 k 281.50 100.00 0.00 0.00 1258.00
1993 0.00 0.00 0.00 8.00 161.50 339.50 511.50 497.00 270.50 88.00 0.00 0.00 1876.00
1994 0.00 0.00 0.00 35.50 212.50 497.50 575.50 561.00 306.00 44.50 6.00 0.00 2238.50
1995 0.00 0.00 0.50 0.50 38.00 293.00 455.50 595.50 143.00 p 34.50 o 2.00 p 0.00 1383.00
1996 0.00 i 0.00 l 0.00 n 11.50 l 215.50 398.00 615.50 361.50 j 215.00 136.00 11.50 0.00 1591.50
1997 1.00 0.00 3.50 18.50 156.00 394.50 555.00 527.00 389.00 101.00 1.50 0.00 2147.00
1998 0.00 0.00 4.00 5.50 157.50 307.50 624.50 547.50 441.00 72.00 11.50 0.00 2171.00
1999 0.00 i 0.00 1.00 4.50 135.37 a 329.50 601.06 d 519.25 a 276.50 96.50 20.00 0.00 1983.67
2000 0.00 0.00 0.00 34.00 238.50 441.21 a 615.00 610.50 360.50 89.50 0.00 0.00 c 2389.21
2001 0.00 a 0.00 a 0.00 37.00 189.50 437.59 a 560.50 508.50 294.83 a 66.50 5.00 0.00 2099.41
2002 0.00 0.00 0.00 29.50 156.50 488.50 714.50 614.00 362.00 63.00 3.00 0.00 2431.00
2003 0.00 0.00 2.58 a 20.00 242.50 333.00 675.00 584.00 278.50 174.50 0.00 0.00 2310.08
2004 0.00 0.00 3.50 17.50 167.50 356.50 249.50 p 426.50 161.00 g 52.00 5.00 0.00 1028.50
2005 0.00 0.00 0.00 2.50 174.50 355.50 689.00 514.50 381.00 104.00 26.00 0.00 2247.00
2006 0.00 0.00 0.00 38.50 204.00 447.00 619.50 496.50 0.00 z 89.00 1.50 n 0.00 a 1894.50
2007 0.00 0.00 0.00 22.50 163.00 401.00 639.00 581.50 301.00 87.00 9.00 3.10 a 2207.10
2008 0.00 b 0.00 0.00 2.50 122.00 374.50 600.00 543.00 310.50 126.00 14.00 0.00 2092.50
2009 0.00 0.00 10.50 14.50 203.50 312.00 556.00 450.50 271.50 31.50 10.00 0.00 1860.00
2010 0.00 0.00 0.00 0.00 131.50 439.50 592.50 515.50 333.50 56.50 i 10.50 0.00 b 2023.00
2011 0.00 0.00 1.50 13.00 109.50 406.00 638.00 567.50 301.50 89.50 0.00 0.00 2126.50
2012 0.00 0.00 3.00 55.50 192.50 513.50 590.00 478.00 271.55 a 74.00 0.00 0.00 2178.05
2013 0.00 0.00 0.00 c 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
Period of Record Statistics
MEAN 0.03 0.00 1.20 14.05 137.44 357.95 552.44 499.88 282.11 73.09 4.86 0.20 2089.43
S.D. 0.19 0.00 2.30 14.51 56.26 77.14 73.97 71.19 68.83 38.94 6.62 0.77 270.00
SKEW 5.10 0.00 2.53 1.08 -0.19 0.17 0.10 -0.41 0.02 0.39 1.58 3.48 -1.18
MAX 1.00 0.00 10.50 55.50 242.50 513.50 714.50 614.00 441.00 174.50 26.00 3.10 2431.00
MIN 0.00 0.00 0.00 0.00 33.67 209.50 405.50 352.00 137.00 11.50 0.00 0.00 1404.00
NO YRS 29 28 31 34 42 43 37 36 32 29 30 30 16