RIFLE, COLORADO

Monthly Total Growing Degree Days

(057031)

Base Temperature = 50 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200711
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
1910 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 328.50 h 84.73 a 0.00 0.00 a 84.73
1911 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 392.50 43.00 0.00 0.00 435.50
1912 0.00 0.00 1.00 4.66 a 181.50 423.00 605.00 581.00 183.50 34.00 0.00 0.00 2013.66
1913 0.00 0.00 3.00 75.50 294.00 450.50 624.00 689.50 281.50 28.00 0.50 0.00 2446.50
1914 0.00 0.00 1.00 56.00 248.00 415.50 658.00 604.50 375.50 28.50 1.00 0.00 2388.00
1915 0.00 0.00 a 1.00 102.00 179.00 377.00 638.00 580.00 304.50 32.50 3.00 0.00 2217.00
1916 0.00 0.00 9.00 62.00 158.50 431.00 665.00 520.00 286.00 45.00 0.00 0.00 2176.50
1917 0.00 0.00 7.00 18.50 69.00 407.50 723.50 552.00 343.00 73.50 8.50 0.00 2202.50
1918 0.00 0.00 2.00 22.50 199.50 596.00 609.50 574.00 307.00 120.50 0.00 0.00 2431.00
1919 0.00 0.00 a 1.00 83.50 274.00 491.50 731.00 629.00 382.00 13.00 0.00 0.00 2605.00
1920 0.00 a 0.00 0.00 18.00 223.00 406.00 631.50 518.22 a 233.50 63.50 0.00 b 0.00 2093.72
1921 0.00 0.00 2.00 17.59 a 208.00 448.00 617.00 531.00 304.50 109.50 0.00 0.00 2237.59
1922 0.00 0.00 0.00 21.50 196.50 482.50 624.00 635.00 360.50 61.50 0.00 0.00 2381.50
1923 0.00 0.00 0.00 26.50 206.50 389.50 687.50 524.50 249.00 27.50 0.00 0.00 2111.00
1924 0.00 0.00 0.00 12.50 181.50 450.50 626.00 573.00 284.00 50.12 a 1.00 0.00 2178.62
1925 0.00 0.00 2.58 a 86.50 334.00 448.97 a 704.50 534.00 382.24 a 55.50 0.00 a 0.00 2548.29
1926 0.00 0.00 a 0.00 a 77.00 186.00 a 479.00 645.00 635.50 279.00 38.00 i 0.00 0.00 z 2301.50
1927 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1928 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
1929 0.00 z 0.00 z 0.00 z 0.00 z 235.50 469.00 770.35 a 576.17 b 0.00 z 0.00 z 0.00 z 0.00 z 2051.02
1930 0.00 z 0.00 z 0.00 101.50 164.50 429.00 710.00 638.00 284.50 65.00 0.00 0.00 2392.50
1931 0.00 0.00 0.00 49.00 219.58 a 621.50 724.00 617.00 343.50 0.00 z 0.00 0.00 2574.58
1932 0.00 0.00 a 1.00 29.50 222.00 460.00 723.50 657.00 280.00 14.00 0.00 0.00 2387.00
1933 0.00 a 0.00 a 3.00 12.00 154.00 538.50 755.88 a 578.00 430.00 76.50 0.00 0.00 2547.88
1934 0.00 0.00 0.00 107.00 421.00 436.00 775.50 746.00 281.00 64.00 9.00 0.00 2839.50
1935 0.00 0.00 0.00 48.00 146.45 b 536.00 743.50 639.00 338.50 49.50 0.00 0.00 2500.95
1936 0.00 0.00 0.00 118.50 348.75 a 616.50 777.00 639.00 279.00 133.50 0.00 0.00 2912.25
1937 0.00 0.00 1.50 150.00 369.00 339.00 556.00 542.00 266.00 19.12 a 0.00 z 0.00 2242.62
1938 0.00 0.00 0.00 101.50 213.00 489.00 612.00 587.00 339.00 88.87 a 0.00 0.00 2430.37
1939 0.00 0.00 1.03 a 85.00 261.00 330.50 g 650.50 508.00 f 397.50 36.00 0.00 0.00 1431.03
1940 0.00 0.00 5.50 53.50 312.50 545.00 708.50 621.00 373.00 82.50 0.00 0.00 2701.50
1941 0.00 0.00 0.00 20.50 254.50 357.50 610.00 577.50 245.50 50.67 e 0.00 z 0.00 k 2116.17
1942 0.00 0.00 0.00 56.00 180.50 423.50 627.50 564.00 283.45 a 88.00 2.00 0.00 2224.95
1943 0.00 0.00 10.50 143.50 160.00 371.00 668.50 583.32 a 274.50 g 87.50 0.00 0.00 2024.32
1944 0.00 0.00 0.00 6.00 229.00 358.00 566.00 547.00 335.00 104.50 6.50 0.00 2152.00
1945 0.00 0.00 0.00 22.50 222.00 284.00 632.00 619.00 273.50 114.00 0.00 0.00 2167.00
1946 0.00 0.00 8.50 95.50 165.50 470.50 710.50 605.50 326.50 28.00 0.00 0.00 2410.50
1947 0.00 0.00 0.00 30.00 249.50 332.50 654.50 638.50 417.50 125.00 h 0.00 0.00 2322.50
1948 0.00 0.00 0.00 74.50 296.50 452.00 613.00 542.00 371.50 67.00 0.00 0.00 2416.50
1949 0.00 0.00 1.50 70.00 213.50 386.00 629.50 639.50 311.50 71.50 0.00 0.00 2323.00
1950 0.00 0.00 1.00 71.00 146.50 382.50 564.00 497.00 316.00 141.00 7.50 0.00 2126.50
1951 0.00 0.00 0.52 a 57.12 d 238.70 a 331.00 662.00 572.50 264.00 59.00 0.00 0.00 2184.83
1952 0.00 0.00 0.00 57.93 a 206.50 465.52 a 507.00 f 556.00 338.00 64.00 7.00 0.00 1694.95
1953 0.00 0.00 5.34 b 38.00 134.33 a 467.50 679.00 513.50 338.00 79.00 0.00 a 0.00 2254.68
1954 0.00 0.00 1.60 b 88.50 288.50 422.50 571.50 g 418.50 f 332.50 115.22 a 0.00 0.00 f 1248.82
1955 0.00 0.00 0.00 27.00 211.00 372.00 646.50 635.50 308.57 b 69.50 0.00 0.00 2270.07
1956 0.00 0.00 0.00 30.00 267.38 c 491.00 599.50 461.50 325.50 96.50 0.00 0.00 2271.38
1957 0.00 0.00 0.50 28.50 100.50 377.00 577.00 572.00 250.00 0.00 z 1.00 0.00 1906.50
1958 0.00 0.00 0.00 10.00 272.50 480.00 564.50 689.50 346.00 107.00 0.50 0.00 z 2470.00
1959 0.00 0.00 0.00 63.00 206.50 468.50 537.50 477.50 213.00 14.50 0.00 0.00 1980.50
1960 0.00 0.00 2.14 b 44.00 130.50 391.00 578.00 521.50 346.00 54.00 0.00 0.00 2067.14
1961 0.00 0.00 7.50 21.50 223.50 438.50 606.50 613.50 156.00 14.50 0.00 0.00 2081.50
1962 0.00 0.00 0.00 44.00 149.00 332.50 496.52 a 472.23 a 278.00 50.50 0.00 0.00 1822.75
1963 0.00 0.00 8.50 50.00 223.72 a 370.00 650.50 561.50 368.00 129.00 0.00 0.00 2361.22
1964 0.00 0.00 0.00 15.00 206.50 371.50 685.50 534.50 291.50 0.00 z 0.00 0.00 2104.50
1965 0.00 0.00 0.00 34.50 157.50 354.00 601.50 522.00 0.00 z 40.50 0.00 0.00 1710.00
1966 0.00 0.00 0.00 22.00 234.50 433.50 704.50 587.00 362.00 28.50 0.50 0.00 2372.50
1967 0.00 0.00 11.50 35.50 195.00 359.46 b 654.50 598.00 357.50 96.50 0.00 0.00 2307.96
1968 0.00 0.00 0.00 4.00 154.00 467.00 613.50 461.00 225.50 71.50 0.00 0.00 1996.50
1969 0.00 0.00 0.50 48.00 304.50 345.50 640.00 665.50 351.00 9.00 0.00 0.00 2364.00
1970 0.00 0.00 0.00 8.00 226.00 407.00 630.50 610.00 232.00 35.50 0.00 0.00 2149.00
1971 0.00 0.00 9.00 28.00 135.00 438.00 630.50 627.75 a 214.00 58.00 0.00 0.00 2140.25
1972 0.00 5.00 1.50 31.50 199.00 474.00 637.00 578.00 297.00 100.50 0.00 0.00 2323.50
1973 0.00 0.00 0.00 11.50 174.00 0.00 z 556.00 579.00 249.50 67.50 0.00 z 0.00 1637.50
1974 0.00 0.00 6.50 31.50 258.00 470.50 634.50 522.35 a 274.00 69.50 0.00 0.00 2266.85
1975 0.00 0.00 0.50 10.50 87.50 320.00 610.50 496.50 253.50 51.00 0.00 0.00 1830.00
1976 0.00 0.00 0.00 5.00 157.50 360.00 661.50 503.50 288.00 35.00 0.00 0.00 2010.50
1977 0.00 0.00 0.00 83.50 206.00 563.50 664.00 597.00 358.50 60.00 3.50 0.00 2536.00
1978 0.00 0.00 16.50 54.50 179.00 455.00 641.50 535.00 326.00 70.50 7.00 0.00 2285.00
1979 0.00 0.00 0.00 44.50 209.50 393.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 647.00
1980 0.00 z 0.00 z 0.00 z 50.50 150.00 457.00 0.00 z 542.00 314.00 0.00 z 1.50 0.00 1515.00
1981 0.00 0.00 0.00 97.00 180.00 535.50 694.50 584.50 442.00 41.00 0.00 0.00 2574.50
1982 0.00 0.00 0.00 22.50 156.00 381.00 641.50 659.00 327.50 15.00 0.00 0.00 2202.50
1983 0.00 0.00 0.50 14.00 124.50 365.50 621.50 706.50 419.00 59.00 4.50 0.00 2315.00
1984 0.00 0.00 0.00 9.50 287.00 368.50 664.00 631.50 343.50 44.00 0.00 z 0.00 2348.00
1985 0.00 0.00 0.00 68.00 242.50 466.00 655.00 642.50 238.50 26.00 0.00 0.00 2338.50
1986 0.00 0.00 22.00 48.50 199.00 504.00 623.50 602.00 256.50 30.00 0.00 0.00 2285.50
1987 0.00 0.00 0.00 100.50 214.00 491.00 598.50 547.00 332.50 101.00 8.50 0.00 2393.00
1988 0.00 0.00 0.00 60.00 208.00 583.00 693.50 642.00 272.00 131.50 1.50 0.00 2591.50
1989 0.00 0.00 9.00 127.00 245.00 436.00 711.00 589.50 361.00 82.00 0.00 z 0.00 2560.50
1990 0.00 z 0.00 20.00 87.50 197.00 550.00 659.50 599.00 467.00 59.00 0.00 0.00 2639.00
1991 0.00 0.00 0.00 14.00 214.00 434.50 611.00 601.00 310.50 101.50 0.00 0.00 2286.50
1992 0.00 0.00 2.00 122.00 318.00 434.50 541.50 551.00 332.50 120.00 0.00 0.00 2421.50
1993 0.00 0.00 2.50 36.00 249.00 437.00 0.00 z 543.50 263.50 74.50 0.00 0.00 1606.00
1994 0.00 0.00 4.00 85.00 274.35 a 331.00 o 707.00 690.00 381.00 41.00 1.00 0.00 l 2183.35
1995 0.00 1.50 4.00 19.00 55.00 j 260.00 j 561.00 668.00 365.50 34.50 2.00 0.00 1655.50
1996 0.00 0.00 10.00 24.00 j 245.50 465.56 c 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 721.06
1997 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 74.50 m 0.00 0.00 0.00
1998 0.00 0.00 21.00 29.50 159.50 j 375.50 786.50 690.50 501.00 98.50 1.00 0.00 2503.50
1999 0.00 c 0.00 b 10.16 b 51.00 102.00 i 464.40 e 566.50 h 659.30 c 323.40 e 115.14 c 2.88 d 0.00 b 1626.29
2000 0.00 b 0.00 d 2.21 c 109.66 a 361.84 b 547.20 e 787.06 d 736.80 c 395.36 b 107.98 a 0.00 d 0.00 g 3048.11
2001 0.00 0.00 10.00 f 108.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 108.00
2002 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 20.50 m 0.00 0.00 0.00
2003 0.00 0.00 e 9.00 74.44 c 345.50 531.00 891.50 634.50 f 375.00 180.00 f 0.50 f 0.00 2226.44
2004 0.00 0.00 69.00 114.50 215.50 i 377.50 k 706.00 440.50 j 215.00 o 0.00 z 0.00 z 0.00 z 889.50
2005 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2006 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2007 0.00 0.00 16.00 45.50 241.00 504.50 806.00 727.00 375.00 b 27.50 g 0.00 0.00 z 2715.00
2008 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2009 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2010 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2011 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
2012 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 98.17 d 6.50 0.00 104.67
2013 0.00 0.00 6.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 6.50
Period of Record Statistics
MEAN 0.00 0.07 3.90 52.84 217.79 439.81 654.81 590.50 318.82 65.97 1.05 0.00 2300.96
S.D. 0.00 0.55 8.67 36.20 64.81 71.06 68.35 63.29 62.47 33.52 2.30 0.00 214.94
SKEW 0.00 8.29 5.21 0.66 0.55 0.38 0.64 0.21 0.16 0.29 2.33 0.00 0.35
MAX 0.00 5.00 69.00 150.00 421.00 621.50 891.50 746.00 501.00 141.00 9.00 0.00 2912.25
MIN 0.00 0.00 0.00 4.00 69.00 284.00 496.52 461.00 156.00 9.00 0.00 0.00 1822.75
NO YRS 87 88 88 88 85 84 82 83 84 80 84 84 58