IDAHO CITY, IDAHO

Monthly Total Growing Degree Days

(104442)

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
1931 0.00 0.00 25.00 142.00 423.00 657.50 925.50 862.50 506.50 264.00 63.50 0.00 3869.50
1932 0.00 3.50 9.00 135.00 371.00 612.50 793.00 711.00 550.50 193.00 3.00 0.00 3381.50
1933 0.00 0.00 1.00 117.50 239.00 676.50 904.00 791.00 455.00 351.50 43.00 3.00 3581.50
1934 0.00 36.00 161.50 358.50 573.00 594.50 928.00 881.00 463.50 306.00 104.00 0.00 4406.00
1935 0.00 0.00 13.00 117.00 291.00 542.50 830.00 750.00 602.00 277.50 0.00 0.00 3423.00
1936 0.00 0.00 1.00 247.00 521.00 659.00 949.50 849.50 478.50 273.50 4.50 0.00 3983.50
1937 0.00 0.00 10.00 86.50 410.00 527.50 887.00 746.50 605.00 282.50 23.50 0.00 3578.50
1938 0.00 0.00 5.00 173.00 321.50 590.00 816.00 769.83 a 691.00 296.00 0.50 0.00 3662.83
1939 0.00 0.00 57.50 241.00 502.00 496.50 893.50 884.00 553.50 264.50 32.00 19.00 3943.50
1940 3.00 11.00 75.50 190.50 508.00 721.50 882.50 871.00 579.50 292.00 8.50 2.00 4145.00
1941 0.00 b 8.00 68.50 144.50 424.50 543.50 861.50 775.50 361.50 196.50 37.00 12.50 3433.50
1942 0.00 0.00 2.00 190.50 283.50 482.00 871.32 c 814.02 b 527.50 259.50 37.00 0.00 3467.34
1943 0.00 k 1.75 d 18.50 260.00 312.50 484.00 809.00 743.00 594.00 286.00 8.50 3.50 3520.75
1944 0.00 0.00 6.50 125.00 389.50 459.50 763.50 716.50 529.00 389.00 18.00 0.00 3396.50
1945 0.00 0.00 18.00 106.00 378.00 480.50 839.00 814.00 415.00 302.50 15.00 0.00 3368.00
1946 0.00 0.00 a 21.18 a 199.82 b 355.98 a 530.17 a 892.50 820.50 480.00 81.12 a 0.54 b 1.50 3383.31
1947 0.00 1.00 67.00 153.00 505.00 479.00 803.00 733.50 471.00 310.50 18.50 0.00 3541.50
1948 0.00 0.00 0.00 109.50 380.50 646.00 721.50 707.50 486.00 250.58 a 12.50 0.00 3314.08
1949 0.00 0.00 8.00 208.33 c 457.00 562.00 804.93 b 800.00 573.50 103.50 65.50 0.00 3582.76
1950 0.00 4.00 11.50 82.00 234.50 489.50 751.50 755.50 523.50 312.50 43.50 2.00 3210.00
1951 0.00 1.50 0.00 164.50 353.50 443.50 813.50 716.50 477.00 167.50 1.00 0.00 3138.50
1952 0.00 a 0.00 2.50 169.50 387.50 537.00 750.50 736.00 566.50 347.50 4.00 0.00 3501.00
1953 2.00 0.00 30.00 132.50 236.00 448.50 805.00 763.50 577.50 297.00 76.00 0.00 3368.00
1954 0.00 0.50 6.50 168.00 421.00 440.17 a 826.50 634.50 468.00 194.50 63.00 0.00 3222.67
1955 0.00 0.00 0.50 58.50 290.50 540.00 720.00 768.00 440.50 256.00 12.41 a 0.00 3086.41
1956 0.00 0.00 23.50 180.00 427.50 496.00 762.00 660.50 466.00 0.00 z 0.00 z 1.50 3017.00
1957 0.00 1.50 4.50 107.00 417.00 578.28 a 795.50 720.00 540.00 152.00 0.00 0.00 3315.78
1958 0.00 3.00 10.50 69.50 543.50 603.00 788.00 860.50 471.00 277.50 24.00 0.50 3651.00
1959 0.00 0.00 3.00 161.00 238.00 629.50 856.00 689.00 404.50 189.00 4.50 0.00 3174.50
1960 0.00 0.00 35.00 146.00 282.50 604.00 957.50 684.50 576.50 216.00 4.00 0.00 3506.00
1961 0.00 0.50 26.00 108.50 382.00 740.00 877.00 951.00 353.50 177.50 0.00 0.00 3616.00
1962 0.00 0.00 4.50 204.50 298.50 560.00 755.00 690.00 522.50 227.00 38.50 0.50 3301.00
1963 0.00 9.00 36.00 96.00 411.00 513.00 710.00 768.50 626.00 373.50 13.00 0.00 3556.00
1964 0.00 0.00 7.00 65.50 306.00 516.50 840.50 670.50 417.50 290.00 15.00 0.00 3128.50
1965 0.00 1.00 7.50 155.00 303.00 571.50 764.00 733.00 297.50 312.50 70.00 0.00 a 3215.00
1966 0.00 0.00 55.00 142.50 464.00 529.00 806.00 802.50 628.50 179.00 29.00 0.00 3635.50
1967 0.00 0.00 18.50 23.50 346.50 540.00 900.00 931.00 665.50 189.50 37.50 1.00 3653.00
1968 0.00 3.50 60.50 93.00 289.50 561.50 877.50 646.00 470.50 174.50 9.50 0.00 3186.00
1969 0.00 0.00 13.00 167.00 467.00 541.00 790.50 814.00 543.50 93.00 32.00 0.00 3461.00
1970 0.00 0.50 13.00 32.50 352.50 624.50 841.00 850.50 351.50 139.50 10.50 0.00 3216.00
1971 0.50 0.00 11.50 118.00 394.00 506.50 799.00 911.50 346.50 197.37 a 3.00 0.00 3287.87
1972 0.00 0.00 49.00 75.00 395.00 601.00 745.00 828.00 374.50 253.68 a 10.00 0.00 3331.18
1973 0.00 5.50 6.50 94.50 401.00 592.00 863.00 785.00 489.00 216.00 25.00 0.00 3477.50
1974 0.00 0.00 18.00 127.00 304.50 687.50 807.00 732.00 529.00 270.00 16.00 0.00 3491.00
1975 2.00 0.00 5.50 19.00 275.00 473.50 910.00 682.50 518.00 222.00 30.00 1.00 3138.50
1976 0.00 0.50 0.50 100.50 427.50 466.00 835.50 642.00 554.50 188.50 73.00 0.00 3288.50
1977 0.00 2.00 6.50 201.00 184.00 668.50 746.50 766.73 a 427.00 219.50 21.50 0.00 3243.23
1978 0.00 0.00 113.00 146.00 296.00 541.00 777.00 713.50 462.00 267.50 26.50 3.00 3345.50
1979 0.00 0.00 14.50 146.00 378.50 601.00 839.00 811.50 604.66 a 288.50 5.50 0.00 3689.16
1980 0.00 10.00 5.00 238.50 393.00 532.50 811.00 0.00 z 519.00 224.50 47.50 0.00 2781.00
1981 2.50 6.00 37.50 189.00 330.50 555.50 784.50 904.00 586.50 183.50 103.39 b 0.00 3682.89
1982 0.00 0.00 7.00 64.50 315.50 598.00 757.50 850.00 497.50 191.50 0.50 0.00 3282.00
1983 0.00 0.50 22.50 104.00 385.50 544.50 703.50 900.00 462.50 247.50 70.50 0.00 3441.00
1984 0.00 0.00 7.50 97.50 359.50 506.00 851.00 878.50 409.50 179.00 4.50 0.00 3293.00
1985 0.00 0.00 1.03 a 184.29 b 402.48 a 597.93 a 959.50 652.50 301.00 104.00 9.00 0.00 3211.73
1986 2.00 12.00 78.00 115.50 354.50 716.50 674.50 871.50 318.00 189.00 14.50 0.00 3346.00
1987 0.00 0.00 10.50 261.00 463.50 631.00 717.50 684.50 541.50 254.50 46.50 2.00 3612.50
1988 0.00 0.50 28.00 183.00 332.00 674.00 856.50 747.00 417.00 388.00 29.00 0.00 3655.00
1989 0.00 0.00 17.50 169.00 303.00 584.50 854.00 672.50 472.50 201.50 13.00 0.00 3287.50
1990 0.00 0.00 31.50 221.00 267.00 515.50 827.50 793.50 659.50 152.00 11.50 0.00 3479.00
1991 0.00 2.00 7.00 78.50 219.00 443.50 828.00 865.00 535.50 243.00 4.00 0.00 3225.50
1992 0.00 11.50 81.00 215.00 481.50 629.00 702.50 787.00 407.50 254.50 1.50 0.00 3571.00
1993 0.00 0.00 17.00 55.50 467.00 436.00 511.50 630.50 437.00 203.50 0.00 0.00 2758.00
1994 0.00 0.50 42.00 175.00 414.00 560.00 875.50 855.00 565.50 132.00 1.00 0.00 3620.50
1995 0.00 15.00 7.00 84.00 299.50 487.00 768.80 a 683.00 517.00 89.00 25.50 2.00 2977.80
1996 0.00 2.50 20.50 118.50 266.00 541.00 849.00 766.50 366.72 a 230.00 10.50 0.00 3171.22
1997 0.00 0.00 34.50 95.00 426.50 573.50 719.00 775.00 556.50 142.00 17.50 0.00 3339.50
1998 0.00 0.00 28.00 106.00 317.50 441.00 928.00 848.00 641.00 155.50 7.50 2.00 3474.50
1999 0.00 0.00 25.00 64.50 271.50 516.72 a 733.00 806.57 d 423.62 a 205.63 a 72.50 1.50 3120.55
2000 0.00 0.00 11.37 a 185.00 374.50 557.14 b 830.80 a 826.50 431.00 160.50 0.00 0.00 3376.81
2001 0.00 0.00 35.00 117.93 a 400.00 534.31 a 845.86 c 873.54 c 581.00 172.64 b 42.00 0.00 3602.27
2002 0.00 0.00 11.00 98.00 295.02 a 613.00 942.40 a 679.33 b 498.50 124.50 11.00 3.50 3276.24
2003 3.00 6.74 a 42.00 116.50 331.00 589.50 941.50 863.50 323.50 k 122.00 k 0.00 e 0.00 2893.74
2004 0.00 2.00 67.50 164.00 303.50 566.50 820.50 749.00 322.50 f 197.00 2.50 0.00 2872.50
2005 0.00 z 0.00 30.50 101.54 d 328.00 432.50 817.00 779.50 397.50 180.00 9.00 0.00 3075.54
2006 0.00 0.00 7.20 c 68.00 m 359.27 c 582.69 d 519.50 m 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 949.16
Period of Record Statistics
MEAN 0.20 2.15 24.66 139.47 363.33 557.20 818.60 777.04 495.32 225.66 23.61 0.83 3430.44
S.D. 0.68 5.17 28.17 61.23 81.53 72.52 76.85 79.35 89.58 70.94 25.17 2.70 263.59
SKEW 3.24 4.29 2.30 0.66 0.28 0.35 -0.71 0.06 -0.14 0.15 1.39 5.30 0.91
MAX 3.00 36.00 161.50 358.50 573.00 740.00 959.50 951.00 691.00 389.00 104.00 19.00 4406.00
MIN 0.00 0.00 0.00 19.00 184.00 432.50 511.50 630.50 297.50 81.12 0.00 0.00 2758.00
NO YRS 74 76 76 75 76 76 75 74 73 73 74 75 69