BLACKFOOT 2 SSW, IDAHO

Monthly Total Growing Degree Days

(100915)

Base Temperature = 40 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 951.00 648.00 314.00 33.50 0.00 1946.50
1949 0.00 a 0.00 31.00 a 372.00 592.50 725.00 998.00 1004.00 675.50 177.00 100.50 0.00 4675.50
1950 4.50 23.69 b 33.50 215.69 a 410.50 674.50 921.50 890.00 603.00 418.50 74.50 0.00 4269.88
1951 0.00 16.50 19.50 258.62 a 541.00 578.00 995.00 847.00 572.50 214.00 27.00 0.50 4069.62
1952 0.00 0.00 0.00 278.50 542.50 720.00 910.00 938.50 670.50 390.00 15.00 0.00 4465.00
1953 22.00 25.00 77.00 184.50 316.50 662.00 1055.00 939.00 685.50 337.50 98.50 0.00 4402.50
1954 2.50 8.00 27.00 267.41 a 566.50 651.50 1066.00 901.50 635.50 241.50 f 86.00 0.00 4211.91
1955 0.00 0.00 12.50 128.00 462.00 705.50 966.50 1017.50 599.00 374.21 c 43.50 31.50 4340.21
1956 0.50 1.00 91.00 280.50 605.50 782.00 1013.00 872.50 640.50 305.50 12.00 1.50 4605.50
1957 0.00 20.00 55.50 185.00 533.00 763.50 1033.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2590.00
1958 0.00 z 0.00 z 0.00 z 0.00 z 687.37 e 410.50 n 486.50 l 590.00 j 340.00 j 202.50 h 0.00 z 0.50 m 687.37
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 62.00 u 271.52 b 34.82 b 0.00 306.34
1960 0.00 a 0.00 145.70 a 291.72 a 440.72 a 752.50 1030.00 812.00 655.00 250.50 35.00 10.50 4423.64
1961 3.00 6.00 41.00 196.03 a 507.00 815.50 995.50 984.00 403.50 210.50 8.50 2.00 4172.53
1962 0.00 4.50 16.00 296.00 391.00 704.50 875.00 813.00 570.00 320.50 38.00 0.00 4028.50
1963 0.00 35.00 66.50 130.50 520.00 579.00 935.00 868.50 683.00 424.00 39.00 0.00 4280.50
1964 0.00 a 0.00 0.00 z 135.00 461.00 0.00 z 0.00 z 812.50 473.28 a 292.78 d 20.50 2.00 2197.05
1965 3.62 a 3.11 a 22.22 a 226.50 355.00 636.50 0.00 z 785.00 0.00 z 317.00 91.07 b 0.00 2440.02
1966 0.00 0.00 68.00 187.50 551.50 681.50 1009.00 888.00 691.55 a 221.00 64.00 1.00 4363.05
1967 6.50 5.50 78.02 a 117.00 461.00 637.50 971.85 a 915.57 b 650.50 267.00 65.00 0.00 4175.44
1968 0.00 10.00 69.50 140.00 405.00 658.00 944.47 a 506.00 j 503.08 d 236.50 20.00 0.00 2986.54
1969 15.00 0.00 31.50 247.00 575.50 633.50 918.00 937.00 653.00 130.50 35.50 8.50 4185.00
1970 12.50 9.50 28.00 64.50 435.00 647.50 855.00 861.00 347.50 152.50 29.00 1.00 3443.00
1971 10.00 0.00 36.00 139.00 451.00 613.50 875.00 899.50 406.50 177.50 16.50 2.58 a 3627.08
1972 0.00 11.50 136.00 147.00 428.50 660.00 800.00 804.00 434.50 274.00 22.24 a 4.50 3722.24
1973 0.00 0.00 2.00 132.50 479.00 662.00 884.50 858.50 523.50 278.48 a 55.00 3.00 3878.48
1974 13.00 2.00 59.93 a 185.50 421.00 783.50 922.50 778.50 533.50 243.00 27.00 1.50 3970.93
1975 0.00 0.00 a 13.50 33.50 318.00 612.50 980.63 a 746.30 d 529.14 a 256.02 b 24.64 b 6.64 c 3520.87
1976 0.00 d 0.00 g 11.07 c 134.44 c 495.40 e 571.07 b 920.04 c 746.30 d 612.93 a 183.33 b 43.45 a 0.00 b 3718.03
1977 0.00 c 0.00 0.00 z 0.00 z 367.50 815.00 890.50 831.00 536.50 289.50 39.00 12.00 3781.00
1978 0.00 1.50 142.00 196.00 362.00 617.50 872.50 779.50 527.00 0.00 z 0.00 z 0.00 z 3498.00
1979 0.00 0.00 32.00 187.80 e 460.87 a 690.00 0.00 z 0.00 z 0.00 z 0.00 z 10.50 1.11 c 1382.27
1980 0.55 c 22.27 a 15.50 322.78 c 404.50 635.50 909.85 a 805.50 576.43 b 284.50 0.00 z 24.36 c 4001.73
1981 3.10 a 13.50 38.50 252.00 408.00 0.00 z 875.00 928.50 606.72 a 198.50 68.89 c 0.00 z 3392.71
1982 0.00 a 11.00 26.00 127.00 372.50 631.03 a 847.50 908.50 508.50 149.00 0.00 z 0.00 i 3581.03
1983 2.00 9.50 59.50 102.50 354.95 a 583.97 a 807.50 948.50 226.50 p 136.00 l 47.50 l 1.55 a 2869.97
1984 0.00 e 0.00 b 2.50 136.00 481.00 593.50 932.00 927.00 502.50 188.50 15.50 0.00 b 3778.50
1985 0.00 u 0.00 0.00 293.00 521.00 721.50 1013.00 793.00 446.00 211.50 20.00 0.00 4019.00
1986 0.00 43.50 178.50 194.50 429.50 796.55 a 802.50 912.78 d 326.00 j 197.37 a 9.44 c 0.00 3564.64
1987 0.00 a 3.00 37.00 322.24 a 503.00 0.00 z 819.00 768.00 0.00 z 297.50 0.00 z 12.50 2762.24
1988 0.00 3.50 37.50 307.50 467.58 a 857.50 967.50 872.00 524.50 442.00 36.50 0.00 4516.08
1989 0.00 0.00 43.00 255.00 419.50 660.50 966.00 789.50 589.50 248.50 51.60 e 0.00 z 4023.10
1990 2.50 3.50 10.50 q 116.50 p 284.50 i 446.50 i 891.00 856.50 715.50 178.50 f 0.00 z 0.00 2469.00
1991 0.00 22.50 36.00 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 58.50
1992 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 685.50 748.00 833.50 493.50 302.00 5.00 0.00 3067.50
1993 0.00 0.00 52.50 103.50 471.00 518.50 315.00 o 690.50 481.50 219.00 5.00 0.00 2541.50
1994 0.00 0.00 59.50 244.00 515.50 656.00 849.00 881.50 612.50 194.50 4.00 0.00 z 4016.50
1995 3.00 0.00 z 56.50 126.00 326.00 520.86 a 755.00 802.90 a 535.00 184.50 85.34 a 11.50 3406.61
1996 0.00 7.00 50.50 168.00 326.50 662.50 857.00 802.00 459.50 249.00 17.59 a 4.50 3604.09
1997 6.00 0.00 58.50 k 141.00 459.50 663.62 a 776.00 867.50 632.00 217.50 21.00 0.00 3784.12
1998 1.00 0.00 53.00 134.00 403.00 0.00 z 0.00 z 911.00 700.00 207.00 0.00 z 6.72 a 2415.72
1999 0.00 c 6.46 b 84.39 d 0.00 z 0.00 z 609.83 a 853.07 d 869.19 e 360.50 i 216.00 h 95.00 f 1.03 a 2423.98
2000 0.00 f 13.96 b 20.50 x 340.56 c 464.48 a 688.20 e 921.98 b 933.21 b 0.00 z 191.50 h 0.00 e 0.00 3362.39
2001 0.00 z 0.00 z 1.00 z 193.50 f 405.00 g 703.45 a 837.00 f 1036.12 e 727.22 c 0.00 z 0.00 z 0.00 z 2466.79
2002 0.00 z 0.00 z 0.00 z 0.00 z 365.50 i 495.00 l 1088.00 843.00 643.00 168.00 0.00 r 6.50 2748.50
2003 11.00 14.50 99.50 230.50 430.50 h 583.50 g 1142.23 e 1012.27 e 613.00 402.50 9.50 4.65 a 3539.65
2004 0.00 2.00 174.67 e 280.00 465.50 702.00 980.50 877.00 559.50 299.50 19.50 3.00 4363.17
2005 0.00 0.00 z 52.50 192.00 455.00 612.50 1012.00 926.00 553.50 265.50 37.50 0.00 4106.50
2006 0.00 0.00 z 33.07 a 235.96 d 530.21 b 470.00 n 558.50 o 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 799.24
Period of Record Statistics
MEAN 2.40 7.33 52.83 201.34 458.43 670.98 926.07 870.70 573.27 260.71 35.90 3.39 4120.06
S.D. 4.73 9.96 43.00 77.33 80.00 74.77 88.96 75.71 90.44 76.43 26.95 6.25 355.69
SKEW 2.38 1.72 1.37 0.16 0.33 0.38 0.07 0.07 -0.38 0.61 0.94 2.84 -0.41
MAX 22.00 43.50 178.50 372.00 687.37 857.50 1142.23 1036.12 727.22 442.00 100.50 31.50 4675.50
MIN 0.00 0.00 0.00 33.50 316.50 518.50 748.00 690.50 347.50 130.50 0.00 0.00 3443.00
NO YRS 51 49 48 49 50 47 48 52 47 47 45 49 24