BLACKFOOT 2 SSW, IDAHO

Monthly Total Growing Degree Days

(100915)

Base Temperature = 50 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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 641.00 349.00 104.00 0.00 0.00 1094.00
1949 0.00 a 0.00 0.00 a 122.50 285.00 426.00 688.00 694.00 375.50 30.50 3.50 0.00 2625.00
1950 0.00 0.00 b 1.00 29.48 a 158.50 378.50 611.50 580.00 324.50 135.00 1.00 0.00 2219.48
1951 0.00 0.00 0.00 50.17 a 259.50 289.50 685.00 537.00 277.50 41.50 0.00 0.00 2140.17
1952 0.00 0.00 0.00 83.00 237.50 420.00 600.00 628.50 370.50 108.50 0.00 0.00 2448.00
1953 0.00 0.00 4.50 52.50 87.00 362.00 745.00 629.00 385.50 100.00 3.00 0.00 2368.50
1954 0.00 0.00 0.00 56.38 a 286.50 358.00 756.00 591.50 349.00 66.00 f 3.00 0.00 2400.38
1955 0.00 0.00 0.50 13.50 182.50 412.50 656.50 707.50 312.00 130.09 c 1.00 0.00 2416.09
1956 0.00 0.00 9.00 65.00 311.00 482.00 703.00 562.50 343.00 101.00 0.00 0.00 2576.50
1957 0.00 0.00 0.00 18.50 234.00 465.00 723.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1440.50
1958 0.00 z 0.00 z 0.00 z 0.00 z 386.90 e 250.50 n 296.50 l 380.00 j 158.00 j 58.50 h 0.00 z 0.00 m 386.90
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 4.00 u 53.98 b 0.00 b 0.00 53.98
1960 0.00 a 0.00 31.52 a 75.52 a 152.93 a 452.50 720.00 502.00 355.00 68.00 3.50 0.00 2360.97
1961 0.00 0.00 0.00 40.34 a 220.00 515.50 685.50 674.00 149.50 42.50 0.00 0.00 2327.34
1962 0.00 0.00 0.00 83.50 109.50 413.00 565.00 503.00 270.00 70.00 0.00 0.00 2014.00
1963 0.00 0.00 8.00 17.50 221.50 279.00 625.00 558.50 383.00 177.50 2.00 0.00 2272.00
1964 0.00 a 0.00 0.00 z 13.00 208.50 0.00 z 0.00 z 502.50 178.45 a 60.85 d 0.00 0.00 963.30
1965 0.00 a 0.00 a 0.52 a 47.50 101.00 336.50 0.00 z 475.00 0.00 z 84.50 0.00 b 0.00 1045.02
1966 0.00 0.00 8.00 28.50 262.50 381.50 699.00 578.00 395.17 a 25.50 0.00 0.00 2378.17
1967 0.00 0.00 2.58 a 2.00 213.50 337.50 661.85 a 605.57 b 354.00 46.50 0.50 0.00 2224.00
1968 0.00 0.00 0.00 21.00 133.00 358.00 634.47 a 296.00 j 227.31 d 42.50 0.00 0.00 1416.27
1969 0.00 0.00 1.00 48.50 269.50 333.50 608.00 627.00 353.00 13.50 7.50 0.00 2261.50
1970 0.00 0.00 0.00 4.00 170.50 348.50 545.00 551.00 116.00 37.50 0.00 0.00 1772.50
1971 0.00 0.00 0.00 9.50 158.50 313.50 565.00 589.50 157.50 34.00 0.00 0.00 a 1827.50
1972 0.00 0.00 7.00 13.50 148.00 360.00 490.00 494.00 182.00 47.00 0.00 a 0.00 1741.50
1973 0.00 0.00 0.00 11.00 196.50 368.00 574.50 548.50 228.50 59.93 a 2.00 0.00 1988.93
1974 0.00 0.00 0.00 a 41.50 150.50 485.50 612.50 468.50 235.00 28.00 0.00 0.00 2021.50
1975 0.00 0.00 a 0.00 0.00 91.00 312.50 670.63 a 436.30 d 234.31 a 66.81 b 0.00 b 0.00 c 1811.55
1976 0.00 d 0.00 g 0.00 c 2.22 c 188.98 e 273.21 b 610.04 c 436.30 d 312.93 a 34.21 b 0.00 a 0.00 b 1857.89
1977 0.00 c 0.00 0.00 z 0.00 z 105.50 515.00 580.50 521.00 247.00 52.00 1.50 0.00 2022.50
1978 0.00 0.00 18.00 18.50 108.50 317.50 562.50 469.50 253.50 0.00 z 0.00 z 0.00 z 1748.00
1979 0.00 0.00 0.00 33.60 e 197.37 a 390.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 0.00 c 621.47
1980 0.00 c 0.00 a 0.00 117.78 c 136.50 336.00 599.85 a 495.50 280.18 b 105.00 0.00 z 0.00 c 2070.81
1981 0.00 a 0.00 0.00 71.00 141.50 0.00 z 565.00 618.50 312.41 a 34.50 0.00 c 0.00 z 1742.91
1982 0.00 a 0.00 0.00 12.50 116.50 341.38 a 537.50 598.50 238.00 17.00 0.00 z 0.00 i 1861.38
1983 0.00 0.00 3.00 2.00 138.98 a 283.97 a 497.50 638.50 101.00 p 2.50 l 1.50 l 0.00 a 1563.95
1984 0.00 e 0.00 b 0.00 23.00 208.50 294.00 622.00 617.00 241.00 63.00 0.00 0.00 b 2068.50
1985 0.00 u 0.00 0.00 71.50 224.50 421.50 703.00 483.00 188.00 28.50 0.00 0.00 2120.00
1986 0.00 2.00 29.50 24.00 197.00 496.55 a 492.50 602.78 d 149.00 j 7.23 a 0.00 c 0.00 1851.56
1987 0.00 a 0.00 0.00 101.38 a 208.50 0.00 z 509.00 458.00 0.00 z 69.50 0.00 z 0.00 1346.38
1988 0.00 0.00 0.00 96.50 197.88 a 557.50 657.50 562.00 238.00 145.00 0.00 0.00 2454.38
1989 0.00 0.00 0.00 66.00 136.00 364.00 656.00 479.50 289.50 50.50 0.00 e 0.00 z 2041.50
1990 0.00 0.00 0.00 q 21.50 p 89.00 i 242.00 i 581.00 546.50 415.50 31.50 f 0.00 z 0.00 1543.00
1991 0.00 0.00 0.00 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
1992 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 387.00 438.00 529.00 202.00 65.00 0.00 0.00 1621.00
1993 0.00 0.00 2.50 2.00 212.50 222.50 155.00 o 380.50 195.00 51.00 0.00 0.00 1066.00
1994 0.00 0.00 0.00 75.50 221.00 356.50 539.00 571.50 312.50 27.50 0.00 0.00 z 2103.50
1995 0.00 0.00 z 0.00 11.00 69.00 233.28 a 445.00 492.90 a 251.50 24.00 0.00 a 0.00 1526.68
1996 0.00 0.00 0.00 26.00 71.00 362.50 547.00 492.00 198.00 101.00 0.00 a 0.00 1797.50
1997 0.00 0.00 0.00 k 15.00 175.00 363.62 a 466.00 557.50 333.00 42.00 0.00 0.00 1952.12
1998 0.00 0.00 0.00 24.50 120.00 0.00 z 0.00 z 601.00 400.00 30.00 0.00 z 0.00 a 1175.50
1999 0.00 c 0.00 b 0.00 d 0.00 z 0.00 z 313.45 a 543.07 d 559.19 e 170.50 i 42.00 h 5.00 f 0.00 a 1415.71
2000 0.00 f 0.00 b 0.00 x 82.78 c 179.28 a 388.20 e 611.98 b 623.21 b 0.00 z 28.00 h 0.00 e 0.00 1885.45
2001 0.00 z 0.00 z 0.00 z 62.00 f 190.00 g 412.24 a 587.00 f 726.12 e 430.56 c 0.00 z 0.00 z 0.00 z 1568.91
2002 0.00 z 0.00 z 0.00 z 0.00 z 179.50 i 315.00 l 778.00 533.00 343.50 10.50 0.00 r 0.00 1665.00
2003 0.00 0.00 13.00 61.50 222.50 h 353.50 g 832.23 e 702.27 e 323.00 163.00 0.00 0.00 a 2095.00
2004 0.00 0.00 25.63 e 65.00 184.00 403.50 670.50 567.00 275.00 92.00 0.00 0.00 2282.63
2005 0.00 0.00 z 0.00 31.00 168.00 327.50 702.00 616.00 266.00 61.50 3.50 0.00 2175.50
2006 0.00 0.00 z 0.00 a 52.50 d 249.07 b 310.00 n 398.50 o 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 301.57
Period of Record Statistics
MEAN 0.00 0.04 3.44 41.52 183.81 373.40 616.07 560.81 286.20 63.47 0.71 0.00 2183.26
S.D. 0.00 0.29 7.65 32.55 65.45 73.63 88.96 75.66 77.42 40.60 1.51 0.00 262.44
SKEW 0.00 6.78 2.59 0.68 0.53 0.40 0.07 0.06 -0.14 1.01 2.62 0.00 -0.26
MAX 0.00 2.00 31.52 122.50 386.90 557.50 832.23 726.12 430.56 177.50 7.50 0.00 2625.00
MIN 0.00 0.00 0.00 0.00 69.00 222.50 438.00 380.50 116.00 7.23 0.00 0.00 1741.50
NO YRS 51 49 48 49 50 47 48 52 47 47 45 49 24