ROCK SPRINGS FAA AP, WYOMING

Monthly Total Growing Degree Days

(487845)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 853.50 628.00 205.00 2.00 0.00 1688.50
1949 0.00 0.00 4.50 202.00 365.50 559.00 863.50 831.00 524.00 91.50 66.50 0.00 3507.50
1950 0.00 0.00 5.00 103.50 228.37 a 553.00 759.00 759.50 432.50 327.00 20.50 0.00 3188.37
1951 0.00 6.00 0.50 55.50 326.02 a 447.00 863.00 761.50 476.00 119.00 1.00 0.00 3055.52
1952 0.00 0.00 0.00 148.00 361.00 666.00 849.50 824.50 610.00 315.50 2.00 0.00 3776.50
1953 0.00 3.00 33.00 91.00 202.50 662.00 971.00 818.00 601.50 235.50 55.50 0.00 3673.00
1954 0.00 3.00 4.50 177.50 428.50 590.00 962.50 819.50 567.41 a 252.50 41.50 0.00 3846.91
1955 0.00 0.00 0.50 82.00 349.00 537.00 905.00 895.50 545.50 260.00 4.50 1.50 3580.50
1956 0.00 0.00 42.50 103.50 451.00 748.00 869.50 774.00 589.50 241.50 23.00 0.00 3842.50
1957 0.00 1.50 12.00 50.69 a 263.50 572.00 860.50 817.50 460.50 161.00 0.00 a 0.00 3199.19
1958 0.00 2.50 0.00 55.50 497.50 668.00 788.50 901.00 531.00 246.50 25.50 0.00 3716.00
1959 0.00 0.00 2.50 138.00 212.00 694.50 895.50 792.00 428.00 147.50 12.00 0.00 3322.00
1960 0.00 0.00 33.00 160.50 343.50 667.50 939.00 782.00 572.50 190.00 5.50 0.00 3693.50
1961 0.00 2.50 12.50 97.50 360.50 722.00 851.50 798.50 241.00 135.00 0.00 0.00 3221.00
1962 0.00 6.50 3.50 167.00 291.00 539.50 780.00 751.00 503.00 247.00 26.00 0.00 3314.50
1963 0.50 6.00 20.00 49.50 385.00 545.00 857.00 804.00 578.00 331.00 13.00 0.00 3589.00
1964 0.00 0.00 6.00 51.00 316.00 471.50 0.00 z 727.50 454.00 220.50 10.00 1.50 2258.00
1965 0.00 0.00 5.00 97.00 234.50 467.00 798.50 716.50 290.00 266.50 35.50 0.00 2910.50
1966 0.00 0.00 33.50 94.00 420.00 565.00 939.50 788.50 552.50 149.00 27.50 0.00 3569.50
1967 0.00 0.00 19.00 51.50 279.00 489.00 877.00 853.00 539.00 221.50 36.00 0.00 3365.00
1968 0.00 0.00 25.00 51.50 239.50 581.00 861.50 663.50 433.00 201.50 1.00 0.00 3057.50
1969 5.00 0.00 15.00 135.50 501.50 461.00 884.50 940.50 615.50 60.00 10.50 1.50 3630.50
1970 3.00 0.00 6.00 32.00 363.50 581.00 863.00 933.50 340.50 97.50 7.00 0.00 3227.00
1971 7.50 2.00 19.00 100.00 302.50 623.00 836.00 928.00 357.50 163.50 0.00 0.00 3339.00
1972 0.00 3.00 68.50 92.00 356.00 654.00 809.00 806.00 471.00 211.50 0.00 0.00 3471.00
1973 0.00 0.00 0.00 35.50 355.50 620.00 794.00 853.50 408.50 249.50 23.50 2.00 3342.00
1974 0.00 0.00 32.00 101.00 373.50 715.50 896.00 757.50 467.00 243.00 1.00 0.00 3586.50
1975 0.00 0.00 6.00 24.00 231.00 464.50 890.00 724.50 464.50 206.50 20.50 1.50 3033.00
1976 0.00 0.00 3.50 78.50 379.00 547.50 921.00 742.50 523.00 149.00 53.50 0.00 3397.50
1977 0.00 8.50 1.50 227.50 295.50 811.50 872.00 755.00 480.50 226.50 27.50 6.00 3712.00
1978 0.00 0.00 76.00 83.50 238.50 603.00 857.50 711.00 467.50 235.00 21.50 0.00 3293.50
1979 0.00 0.00 b 0.00 135.50 340.00 603.00 871.00 749.50 612.00 251.00 0.00 0.00 3562.00
1980 0.00 0.00 0.00 149.50 289.00 644.50 881.50 725.00 520.00 210.50 55.50 10.50 3486.00
1981 0.00 7.00 6.50 208.50 282.50 655.00 853.00 777.50 545.50 69.00 13.00 10.00 3427.50
1982 0.00 10.00 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 10.00
1983 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 338.50 n 0.00 z 34.00 0.00 34.00
1984 0.00 e 0.00 0.00 49.00 383.50 533.00 867.50 850.50 432.00 146.00 5.00 0.00 3266.50
1985 0.00 0.00 15.50 233.00 482.00 689.00 961.50 803.00 368.00 131.00 16.50 0.00 3699.50
1986 0.00 9.00 86.00 99.50 301.00 738.50 773.00 0.00 z 368.50 142.00 2.50 0.00 2520.00
1987 0.00 0.00 7.00 251.50 417.50 686.00 800.00 736.50 530.50 244.50 38.00 0.00 3711.50
1988 0.00 0.50 11.50 186.00 362.00 825.00 995.00 850.00 484.50 361.50 20.00 0.00 4096.00
1989 0.00 0.00 58.50 224.00 358.50 571.00 956.50 768.50 499.00 221.00 41.00 0.00 3698.00
1990 1.50 0.00 22.00 197.00 284.50 675.00 884.50 834.50 660.00 181.00 21.50 0.00 3761.50
1991 0.00 0.50 6.00 81.00 295.00 624.00 862.50 834.50 492.00 290.50 4.50 0.00 3490.50
1992 0.00 0.00 30.00 241.50 445.00 592.00 758.00 819.00 494.00 253.50 1.50 0.00 3634.50
1993 0.00 0.00 37.00 44.50 377.00 447.00 647.00 683.00 448.00 139.00 0.00 0.00 2822.50
1994 0.00 0.00 b 37.72 a 161.00 473.00 707.00 872.50 872.50 543.00 113.50 18.50 0.00 3798.72
1995 0.00 1.50 0.00 z 56.50 130.41 b 457.00 770.50 853.50 487.50 138.50 44.00 6.50 2945.91
1996 0.00 5.00 16.02 a 113.50 288.00 672.50 892.00 836.50 412.00 237.00 19.14 a 0.00 3491.65
1997 0.00 0.00 a 38.00 61.50 377.50 640.50 803.00 790.00 499.50 175.00 12.50 0.00 3397.50
1998 0.00 0.00 25.50 72.50 318.50 400.00 911.50 841.50 614.00 159.00 11.50 4.50 3358.50
1999 1.00 0.00 39.50 64.82 b 261.00 557.00 878.00 827.00 399.50 270.00 82.00 0.00 z 3379.82
2000 0.00 0.00 10.50 168.50 437.00 644.00 934.50 911.00 468.10 a 142.50 0.00 a 0.00 3716.10
2001 0.00 b 0.00 15.50 133.50 438.50 675.50 956.87 a 905.50 616.03 a 218.00 26.50 0.00 a 3985.90
2002 0.00 0.50 12.50 145.50 358.00 716.50 1023.00 819.50 513.50 103.00 0.00 0.00 3692.00
2003 7.50 7.00 35.00 160.00 411.00 571.50 1056.50 951.50 512.50 361.50 0.00 0.00 4074.00
2004 0.00 0.00 109.50 147.00 373.00 591.00 864.00 751.50 482.00 196.00 5.00 0.00 3519.00
2005 0.50 0.00 4.00 93.00 310.50 532.00 950.50 782.00 484.00 234.00 39.50 0.50 3430.50
2006 0.00 2.50 4.00 161.00 409.00 752.00 1012.50 821.00 425.00 136.00 36.00 0.00 3759.00
2007 0.00 0.00 100.50 142.50 388.50 738.50 1044.00 904.00 518.50 276.50 63.00 0.00 4176.00
2008 0.00 0.00 0.00 67.00 269.50 575.00 964.50 841.00 453.50 206.50 38.00 2.00 3417.00
2009 0.00 0.00 43.50 107.00 384.00 515.00 858.00 779.00 602.00 69.00 39.50 0.00 3397.00
2010 0.00 0.00 12.50 107.00 187.50 598.50 888.00 805.00 589.00 278.50 41.00 1.00 3508.00
2011 0.00 j 0.00 10.50 51.00 197.00 578.50 907.50 938.00 607.50 276.79 c 0.00 0.00 3566.79
2012 0.50 0.00 127.00 216.50 426.50 774.50 990.50 966.00 622.00 217.50 70.50 2.50 4414.00
2013 0.00 a 0.00 44.50 9.00 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 44.50
Period of Record Statistics
MEAN 0.43 1.38 23.49 117.19 338.81 609.75 882.02 814.70 499.29 204.06 21.46 0.82 3530.73
S.D. 1.50 2.60 28.18 59.98 81.97 95.85 76.08 68.47 85.94 70.57 20.56 2.17 304.45
SKEW 3.96 1.91 1.87 0.51 -0.18 0.03 -0.11 0.23 -0.52 0.03 0.91 3.25 0.26
MAX 7.50 10.00 127.00 251.50 501.50 825.00 1056.50 966.00 660.00 361.50 82.00 10.50 4414.00
MIN 0.00 0.00 0.00 24.00 130.41 400.00 647.00 663.50 241.00 60.00 0.00 0.00 2822.50
NO YRS 63 64 62 62 62 62 61 62 63 63 64 63 57