CASTLE ROCK, COLORADO

Monthly Total Growing Degree Days

(051401)

Base Temperature = 50 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
1893 0.00 a 0.00 14.97 b 35.00 166.37 a 467.00 607.50 521.50 331.50 60.00 0.00 0.00 2203.83
1894 0.50 0.00 a 20.50 65.17 a 239.00 388.00 573.00 529.00 303.50 97.50 0.00 q 0.00 z 2216.17
1895 0.00 z 0.00 z 0.00 z 0.00 z 188.58 a 377.00 429.00 439.50 294.50 34.00 0.00 0.00 1762.58
1896 0.00 0.00 2.00 37.50 152.00 410.17 a 538.50 485.50 224.50 32.50 0.00 0.00 1882.67
1897 0.00 b 0.00 0.00 a 3.50 182.00 n 473.50 597.50 493.00 447.00 70.00 10.00 i 0.00 k 2084.50
1898 0.00 z 0.00 z 0.00 j 34.00 192.50 402.50 644.00 550.00 251.50 29.50 8.00 0.00 2112.00
1899 0.00 0.00 3.32 c 63.00 188.50 410.50 554.00 510.50 292.50 51.00 4.50 0.00 2077.82
1900 0.00 0.00 0.50 1.00 212.00 430.50 514.00 493.00 288.50 93.50 1.50 0.00 2034.50
1901 0.00 0.00 1.03 a 68.50 200.00 411.50 686.00 570.50 266.50 112.50 5.00 0.00 a 2321.53
1902 0.00 0.00 0.00 62.88 d 238.00 461.50 541.00 575.50 300.00 72.33 a 20.00 0.00 2271.22
1903 0.00 0.00 2.07 a 36.50 85.50 261.50 576.00 581.25 a 279.00 69.50 15.00 0.00 1906.32
1904 0.00 13.50 2.00 41.50 133.50 271.03 a 476.00 533.00 0.00 z 0.00 z 0.00 z 0.00 z 1470.53
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 331.50 57.00 6.21 a 0.00 394.71
1906 0.00 a 1.00 4.59 d 35.00 178.50 339.50 468.00 573.00 279.50 45.50 2.07 a 0.52 a 1927.18
1907 0.00 0.00 40.00 10.50 57.50 219.64 b 287.00 g 511.50 227.50 17.16 c 0.00 a 0.00 1083.80
1908 0.00 0.00 15.00 27.50 113.50 304.50 482.00 434.00 328.00 68.50 0.00 0.00 1773.00
1909 0.00 0.00 0.00 z 22.00 64.00 327.50 533.50 493.00 177.00 0.00 z 26.00 0.00 1643.00
1910 1.50 0.00 a 17.00 0.00 z 136.50 432.50 622.50 508.00 392.50 0.00 z 1.50 q 0.00 2110.50
1911 1.50 0.00 3.00 32.50 242.00 480.00 486.00 488.50 396.50 90.00 i 0.00 z 0.00 2130.00
1912 0.00 a 0.00 0.00 17.00 176.50 267.00 489.50 457.80 c 132.50 21.50 1.50 0.00 1563.30
1913 0.00 0.00 8.50 49.50 205.50 0.00 z 519.50 570.40 a 151.11 c 31.50 4.50 0.00 1540.51
1914 0.00 0.00 0.00 12.50 169.00 403.50 508.00 479.50 323.00 57.50 4.66 a 0.00 1957.66
1915 0.00 0.00 0.00 37.00 106.50 231.50 461.00 354.50 233.00 73.50 15.00 0.00 f 1512.00
1916 2.00 0.00 23.50 17.07 a 155.50 361.50 592.50 423.00 241.50 58.00 4.00 0.00 1878.57
1917 0.00 2.00 7.00 6.00 39.00 309.50 535.50 407.50 291.00 53.50 0.50 1.79 e 1653.29
1918 0.00 0.00 a 0.00 z 0.00 z 7.00 z 140.50 v 49.00 z 223.50 r 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1919 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
1920 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 357.50 532.00 390.50 240.50 102.00 3.50 0.00 1626.00
1921 0.50 0.00 15.00 22.50 194.50 375.00 556.00 495.00 333.00 109.53 a 0.50 3.62 a 2105.15
1922 0.00 0.00 0.50 8.00 144.00 479.50 569.00 600.50 325.00 60.50 0.00 0.00 2187.00
1923 0.00 0.00 a 0.00 29.00 142.00 370.50 570.50 456.00 212.00 26.50 0.50 0.00 1807.00
1924 0.00 0.00 0.00 15.00 47.00 381.00 743.00 685.50 495.50 50.00 7.00 0.00 2424.00
1925 0.00 a 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
1926 0.00 z 0.00 z 0.00 z 23.08 d 102.00 212.50 283.50 417.00 295.00 101.00 0.50 2.50 1437.08
1927 1.00 1.50 0.00 51.00 184.00 349.50 519.00 405.50 166.00 g 43.50 24.50 0.00 1579.50
1928 0.00 0.00 4.00 37.76 a 176.50 259.00 498.00 462.00 256.50 74.00 2.50 0.00 1770.26
1929 0.00 0.00 1.00 16.00 114.50 376.00 569.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1077.00
1930 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
1931 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
1932 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
1933 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
1934 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
1935 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
1936 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
1937 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
1938 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
1939 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
1940 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
1941 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
1942 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
1943 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
1944 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
1945 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
1946 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
1947 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
1948 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
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 84.50 m 167.50 328.00 540.50 545.50 298.00 113.50 0.00 0.00 1993.00
1963 0.00 3.00 18.00 45.00 256.00 436.00 674.50 511.00 395.00 185.00 1.50 0.00 2525.00
1964 0.00 0.00 0.00 20.50 191.50 342.00 672.50 512.00 281.50 84.00 2.00 8.50 2114.50
1965 0.00 0.00 0.00 42.00 134.00 333.50 582.50 455.50 220.50 88.50 2.50 0.00 1859.00
1966 0.00 0.00 5.50 15.50 235.50 402.00 707.00 493.50 321.00 65.50 5.50 0.00 2251.00
1967 0.00 0.00 28.00 55.00 141.00 333.50 587.50 460.00 287.00 124.00 3.50 0.00 2019.50
1968 0.00 0.00 1.50 4.50 109.00 487.00 587.00 501.50 261.00 97.50 0.00 0.00 2049.00
1969 0.00 0.00 2.50 64.50 230.00 282.00 666.00 656.00 343.00 25.50 0.00 0.00 2269.50
1970 0.00 0.00 0.00 19.50 237.00 401.00 596.00 621.50 266.00 33.50 3.50 0.00 2178.00
1971 0.00 t 0.00 17.50 21.50 101.50 445.50 521.50 537.50 227.00 47.50 15.00 2.00 1936.50
1972 0.00 1.00 10.50 34.50 138.50 403.50 529.50 482.00 244.50 121.50 0.00 0.00 1965.50
1973 0.00 0.00 0.00 15.50 90.50 359.00 536.00 532.50 221.00 91.00 21.50 5.00 1872.00
1974 0.00 0.00 13.00 43.00 225.00 400.00 572.50 468.00 173.50 96.50 2.00 0.00 1993.50
1975 0.00 0.00 1.50 40.18 b 117.00 338.50 604.00 534.00 247.00 132.50 9.50 0.00 2024.18
1976 0.00 0.50 0.00 a 24.31 a 160.00 389.50 637.50 539.00 0.00 z 55.50 0.00 0.00 1806.31
1977 0.00 2.50 1.00 51.72 a 247.47 b 519.31 a 661.00 538.22 b 334.00 f 95.14 b 13.45 a 0.00 l 2129.81
1978 0.00 b 0.00 d 0.00 j 32.00 m 212.87 a 471.21 a 516.50 h 532.17 d 397.76 a 94.60 b 16.61 b 0.00 a 1725.21
1979 0.00 6.50 2.50 64.66 a 172.00 396.21 a 636.02 a 519.80 c 408.00 153.00 0.00 d 0.00 b 2358.68
1980 0.00 i 0.00 j 0.00 f 42.00 e 143.67 e 545.40 e 478.50 i 580.98 b 128.00 u 0.00 q 27.41 a 0.00 q 1339.47
1981 0.00 d 0.00 a 0.50 138.75 b 128.02 d 507.93 a 638.71 b 514.71 b 373.45 a 84.00 6.43 b 0.00 2392.49
1982 0.00 0.50 4.00 30.50 137.00 304.00 616.50 598.00 334.50 33.00 0.00 0.00 2058.00
1983 0.00 0.00 0.00 15.00 b 113.50 327.00 620.00 615.50 435.00 85.50 13.97 a 0.00 d 2225.47
1984 0.00 0.00 0.50 5.00 262.50 369.50 611.00 526.50 267.50 34.00 2.07 a 2.77 c 2081.34
1985 0.00 e 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 35.00 o 2.07 a 0.00 a 2.07
1986 8.00 13.48 a 38.50 48.50 135.88 a 484.50 588.50 550.50 254.00 44.50 4.00 0.00 2170.36
1987 0.00 0.00 c 0.00 122.00 185.00 436.00 591.00 478.50 255.00 78.50 18.00 3.50 2167.50
1988 0.00 0.00 12.50 55.00 208.00 479.00 577.50 586.00 259.00 91.00 25.00 0.00 2293.00
1989 0.00 0.50 42.50 110.00 173.00 351.21 a 629.00 310.00 m 280.00 96.00 10.38 d 0.00 1692.59
1990 2.00 2.00 1.60 b 31.50 151.56 d 556.61 b 522.50 496.00 362.50 84.22 a 18.00 0.00 a 2228.48
1991 0.00 0.00 13.00 28.00 242.66 b 458.40 e 560.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1302.06
1992 0.00 z 0.00 z 0.00 82.50 222.00 317.00 493.50 457.50 310.86 a 130.50 0.00 0.00 2013.86
1993 0.00 0.00 10.50 24.00 170.00 346.50 558.50 478.50 215.50 66.00 0.00 0.00 1869.50
1994 0.00 0.00 9.00 79.50 243.00 528.50 591.50 619.00 370.00 74.50 17.00 0.00 2532.00
1995 0.00 0.50 18.00 26.50 51.50 308.00 513.00 642.50 308.00 62.50 12.00 4.50 1947.00
1996 0.00 0.00 3.50 63.50 232.00 450.50 604.50 569.00 257.00 130.00 5.50 5.50 2321.00
1997 7.00 0.00 17.00 26.00 140.50 411.50 615.00 505.50 353.50 119.87 a 0.00 0.00 2195.87
1998 0.00 0.00 7.00 26.50 192.50 320.00 631.00 515.50 429.50 77.50 27.50 3.50 2230.50
1999 0.00 e 0.00 a 18.50 15.52 a 47.00 s 250.50 g 632.92 a 539.50 240.50 98.00 52.00 2.58 a 1599.52
2000 0.00 0.52 a 1.00 63.50 254.20 a 468.62 a 640.15 a 625.00 356.38 a 82.50 0.00 a 0.00 2491.87
2001 0.00 b 0.00 0.00 73.00 209.00 481.00 690.78 a 0.00 z 373.97 a 103.33 a 11.50 0.00 1942.58
2002 0.00 0.00 0.50 78.00 163.00 534.50 687.00 553.50 329.50 32.00 0.00 0.00 2378.00
2003 0.00 4.00 15.00 63.50 211.00 313.50 726.50 626.50 235.50 160.50 4.50 0.00 2360.50
2004 0.00 0.50 33.00 49.50 245.00 332.50 497.50 423.50 308.00 61.50 6.00 0.50 1957.50
2005 2.50 0.00 2.00 26.00 195.50 406.00 705.00 510.50 396.00 114.00 39.50 0.00 2397.00
2006 4.50 3.00 27.50 104.00 267.50 561.50 658.00 577.00 204.50 93.50 29.50 0.00 2530.50
2007 0.00 0.00 24.50 22.50 203.50 455.50 690.50 649.00 380.00 166.50 27.00 3.50 2622.50
2008 0.00 0.00 0.00 48.50 167.50 421.00 711.00 565.50 265.00 102.50 32.50 0.00 2313.50
2009 2.00 2.50 39.50 44.00 196.50 354.50 550.00 0.00 z 0.00 z 34.50 29.00 0.00 1252.50
2010 0.00 0.00 17.00 44.00 179.50 489.50 653.50 643.00 440.50 130.00 28.00 0.00 2625.00
2011 0.00 4.00 22.50 63.62 a 127.88 c 469.66 a 698.00 692.85 a 317.00 124.00 7.24 a 0.00 2526.74
2012 0.00 b 0.00 70.00 111.21 a 261.50 609.64 b 731.08 a 636.07 d 368.33 c 106.50 28.50 7.50 2930.34
2013 0.00 0.00 11.48 d 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 11.48
Period of Record Statistics
MEAN 0.42 0.81 9.84 41.55 171.56 395.91 585.25 527.06 300.18 80.24 9.47 0.75 2161.96
S.D. 1.36 2.37 13.18 28.27 55.61 84.13 79.57 70.74 72.84 36.72 11.36 1.77 269.26
SKEW 4.17 4.27 1.98 1.21 -0.35 0.09 -0.48 0.14 0.27 0.45 1.38 2.60 0.24
MAX 8.00 13.50 70.00 138.75 267.50 609.64 743.00 692.85 495.50 185.00 52.00 8.50 2930.34
MIN 0.00 0.00 0.00 1.00 39.00 212.50 283.50 354.50 132.50 17.16 0.00 0.00 1563.30
NO YRS 79 78 76 78 80 81 80 78 76 77 78 77 56