MT RUSHMORE NATL MEM, SOUTH DAKOTA

Monthly Total Growing Degree Days

(395870)

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
1962 0.00 z 8.62 b 0.00 95.50 163.50 325.50 487.50 558.50 262.50 109.50 0.00 b 0.00 2011.12
1963 0.00 4.15 a 44.50 38.50 145.50 392.00 651.00 631.00 477.60 e 305.00 6.00 0.00 2695.25
1964 0.00 0.00 2.00 30.00 215.00 344.00 728.50 523.50 263.50 128.00 19.50 0.00 2254.00
1965 0.00 4.00 0.00 48.00 124.00 286.50 563.00 493.50 91.50 152.00 21.00 5.00 1788.50
1966 0.00 0.00 17.50 5.00 243.50 409.50 759.00 474.50 345.00 105.00 7.00 0.00 2366.00
1967 0.00 0.00 17.50 19.00 137.00 262.00 630.85 a 620.00 a 337.00 115.00 1.00 0.00 2139.35
1968 2.00 0.00 11.50 32.00 70.50 366.00 586.50 489.50 276.00 135.50 2.50 0.00 1972.00
1969 0.00 a 0.00 0.00 59.00 263.50 251.50 599.00 733.00 458.50 24.50 19.00 1.00 2409.00
1970 0.00 0.00 0.00 a 11.50 217.50 515.00 703.00 698.50 332.00 78.00 0.00 0.00 2555.50
1971 0.00 0.00 1.00 35.50 85.50 439.00 554.50 704.00 207.50 f 38.48 b 1.03 a 0.00 1859.02
1972 0.00 5.00 28.00 10.00 194.50 407.50 485.00 560.50 285.00 84.00 0.00 0.00 2059.50
1973 4.00 0.00 0.00 e 12.00 138.50 408.50 605.00 662.00 215.50 144.50 9.50 0.00 2199.50
1974 10.00 0.00 0.00 52.00 120.50 486.50 775.50 508.40 a 248.00 163.50 4.50 0.00 2368.90
1975 0.00 0.00 0.00 24.00 0.00 z 336.00 735.50 599.00 297.00 180.50 62.00 5.50 2239.50
1976 0.00 0.00 8.27 a 31.00 159.50 g 387.50 666.00 610.50 390.00 101.00 5.50 3.00 2202.77
1977 0.00 0.00 5.00 91.50 242.00 498.62 a 653.67 b 427.50 330.50 96.00 9.00 0.00 2353.79
1978 0.00 0.00 27.00 0.00 165.00 392.50 567.82 a 574.50 435.50 84.50 24.50 0.00 2271.32
1979 0.00 0.00 0.00 32.50 129.50 326.00 534.00 491.50 502.50 98.00 10.50 9.00 2133.50
1980 0.00 0.00 0.00 a 63.50 155.50 463.00 720.00 486.04 c 324.00 140.50 31.55 a 9.82 a 2393.90
1981 12.00 0.00 0.00 88.50 94.50 364.00 604.50 569.50 377.50 81.00 22.76 a 0.00 2214.26
1982 0.00 6.00 0.00 31.50 91.50 220.00 642.50 595.00 295.00 45.50 0.00 0.00 1927.00
1983 0.00 0.00 4.50 7.50 116.00 332.00 748.00 797.50 360.00 73.50 22.00 0.00 2461.00
1984 0.50 0.00 0.00 2.50 164.00 328.50 604.00 707.00 247.50 96.00 6.50 5.00 2161.50
1985 0.00 0.00 4.50 122.00 340.50 367.50 713.50 547.15 a 262.50 44.00 3.50 0.00 2405.15
1986 2.50 6.50 52.50 22.00 158.50 498.00 605.00 555.00 105.50 59.00 0.50 0.00 2065.00
1987 5.50 2.50 26.00 165.50 241.00 466.50 674.00 463.00 290.50 86.00 2.00 3.50 2426.00
1988 0.00 0.00 10.50 l 75.00 268.00 684.50 707.50 664.00 286.50 76.50 12.00 6.50 2780.50
1989 0.00 0.00 20.50 84.00 177.00 375.50 720.50 594.50 325.50 110.50 4.00 0.50 2412.50
1990 0.00 i 0.00 1.50 52.50 72.50 426.00 553.50 611.00 449.00 78.50 33.50 10.50 2288.50
1991 0.00 0.00 0.00 48.00 185.00 443.00 589.50 665.50 311.50 145.50 0.00 0.00 2388.00
1992 0.00 10.50 11.50 83.50 216.50 260.50 301.50 388.50 302.00 140.00 0.00 a 0.00 1714.50
1993 0.00 0.00 27.00 2.50 123.50 243.50 359.50 421.50 116.50 69.00 0.00 2.00 1365.00
1994 0.00 0.00 3.50 81.50 246.50 420.00 505.00 562.50 363.50 41.50 4.00 1.50 2229.50
1995 0.50 9.50 18.00 0.00 21.50 292.00 540.50 668.00 283.50 50.50 6.00 0.00 1890.00
1996 1.00 1.50 3.00 22.00 66.00 413.00 526.50 574.69 e 209.00 104.00 0.50 0.00 1921.19
1997 2.50 0.00 32.00 7.00 46.50 b 373.50 501.00 466.50 343.50 138.00 7.50 5.00 1923.00
1998 0.00 0.00 8.50 38.00 153.50 195.50 585.50 550.50 468.50 52.50 8.79 a 0.00 2061.29
1999 0.00 0.00 0.00 8.00 104.00 288.00 591.00 585.50 185.50 109.50 95.50 1.00 1968.00
2000 0.00 6.50 7.50 22.50 178.00 310.50 615.50 677.50 397.00 85.00 0.00 0.00 2300.00
2001 0.00 0.00 0.00 86.50 156.00 345.50 649.50 691.50 329.50 67.00 64.66 a 0.00 2390.16
2002 3.50 0.00 0.00 26.50 95.50 467.00 745.00 503.00 300.00 0.00 z 3.50 0.00 2144.00
2003 2.00 0.00 13.00 55.50 131.00 249.00 723.00 678.00 246.50 189.00 4.00 0.00 a 2291.00
2004 0.00 1.00 15.50 30.00 131.00 241.00 546.00 426.50 264.00 55.50 12.50 0.00 1723.00
2005 5.50 0.00 1.50 41.50 97.00 378.00 658.50 509.00 392.50 117.50 10.00 0.00 2211.00
2006 0.00 b 0.00 2.00 80.50 201.50 457.50 740.50 530.50 184.50 75.50 21.00 1.50 2295.00
2007 0.00 0.00 31.00 33.50 202.50 461.50 724.50 602.50 338.00 84.50 14.00 0.00 2492.00
2008 0.00 0.00 0.00 0.00 z 0.00 z 257.07 a 565.50 517.50 213.50 67.00 25.50 0.00 1646.07
2009 2.00 1.50 17.50 29.00 149.50 284.00 453.00 456.50 346.00 9.50 15.52 a 0.00 c 1764.02
2010 2.00 0.00 11.50 21.50 79.00 311.00 551.50 633.50 313.00 140.00 31.00 0.00 2094.00
2011 0.00 0.00 a 0.00 2.00 32.00 344.50 680.00 605.00 327.50 125.50 8.00 0.00 2124.50
2012 0.00 0.00 78.50 77.50 136.50 508.50 756.50 609.00 413.50 64.50 13.00 1.50 2659.00
2013 0.00 0.00 2.50 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 2.50
Period of Record Statistics
MEAN 1.11 1.29 10.90 42.77 151.81 370.66 617.40 573.98 310.40 99.30 13.45 1.41 2182.25
S.D. 2.48 2.72 15.82 35.26 67.00 94.61 102.78 90.55 91.16 49.77 18.25 2.71 274.47
SKEW 2.92 2.08 2.17 1.14 0.39 0.57 -0.70 0.11 -0.20 1.41 2.62 2.06 -0.62
MAX 12.00 10.50 78.50 165.50 340.50 684.50 775.50 797.50 502.50 305.00 95.50 10.50 2695.25
MIN 0.00 0.00 0.00 0.00 21.50 195.50 301.50 388.50 91.50 9.50 0.00 0.00 1365.00
NO YRS 50 52 51 50 48 51 51 51 50 50 51 51 43