PORTHILL, IDAHO

Monthly Total Growing Degree Days

(107264)

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
1892 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 0.00 z 0.00 z 0.00
1893 1.00 0.00 0.00 50.56 c 384.00 445.00 852.00 816.50 448.00 55.00 15.00 0.00 a 3067.06
1894 1.00 0.00 9.00 113.28 a 417.50 551.90 a 588.00 i 828.22 a 345.50 74.00 38.50 0.00 2378.89
1895 0.00 0.52 a 17.50 219.50 372.00 a 593.57 b 461.50 l 807.07 b 287.00 224.50 34.50 5.68 a 2561.84
1896 1.50 9.32 a 18.50 118.00 373.00 674.00 921.50 788.95 a 422.50 177.73 a 12.50 3.44 d 3520.95
1897 0.00 0.00 15.50 a 326.50 739.50 686.00 768.00 1010.00 439.00 229.92 a 18.00 0.50 4232.92
1898 0.00 0.52 a 17.50 342.50 584.00 658.50 481.50 q 0.00 z 0.00 z 316.00 0.00 0.00 e 1919.02
1899 0.00 e 7.00 6.00 46.50 297.50 459.50 926.50 537.00 380.50 183.50 23.50 2.07 a 2869.57
1900 0.00 0.00 10.00 262.00 335.00 762.00 816.50 571.43 a 413.00 97.50 0.00 5.50 3272.93
1901 0.00 3.00 12.50 0.00 z 296.00 n 428.50 792.50 840.00 306.00 216.00 14.50 0.00 2613.00
1902 0.00 0.00 1.00 79.50 416.00 497.50 676.50 712.50 385.00 208.00 0.50 0.00 2976.50
1903 0.00 0.00 13.50 114.00 344.00 678.50 661.00 704.50 330.00 146.50 31.00 1.50 3024.50
1904 0.00 0.00 2.00 222.50 428.50 547.00 806.00 706.50 458.50 169.00 46.50 1.50 3388.00
1905 1.50 6.50 47.50 221.50 395.00 561.00 849.00 771.00 482.50 91.00 11.50 0.00 3438.00
1906 0.00 0.50 54.00 280.50 448.00 540.50 968.00 767.50 517.00 275.00 17.50 0.00 3868.50
1907 0.00 5.50 10.00 121.50 437.50 570.00 770.00 636.00 430.00 255.50 23.00 0.00 3259.00
1908 0.00 0.00 29.50 222.00 369.50 550.00 836.50 738.50 465.00 169.50 63.50 0.00 3444.00
1909 0.00 0.00 15.00 95.50 374.00 589.00 724.50 680.00 487.00 115.00 12.00 0.00 3092.00
1910 0.00 0.00 66.00 282.00 477.00 562.00 809.00 615.50 442.00 281.50 23.50 0.00 3558.50
1911 0.00 0.00 37.50 180.00 320.00 567.00 773.00 643.00 351.50 131.50 0.50 0.00 3004.00
1912 0.00 0.00 17.50 201.50 470.00 685.71 b 677.00 657.00 318.50 80.00 10.00 0.00 3117.21
1913 0.00 1.00 5.00 154.50 407.00 580.50 709.50 736.50 410.00 124.50 6.50 0.00 3135.00
1914 2.00 3.50 34.00 219.50 393.50 520.50 814.00 753.50 380.00 174.50 42.50 0.00 3337.50
1915 0.00 0.00 68.00 310.00 447.00 548.50 709.00 886.50 408.50 217.50 12.50 0.00 3607.50
1916 0.00 0.00 27.50 175.00 283.50 484.50 695.00 707.50 402.50 99.50 11.00 0.00 2886.00
1917 0.00 0.00 0.00 71.00 379.00 517.00 831.00 719.50 467.50 215.50 25.50 10.50 3236.50
1918 0.00 2.50 73.00 187.50 330.00 657.00 801.00 674.50 544.00 284.50 14.00 7.50 3575.50
1919 2.50 0.00 30.00 205.50 386.50 574.50 806.00 754.50 427.00 115.00 20.50 3.50 3325.50
1920 2.50 3.00 17.50 117.50 313.00 485.50 888.00 752.50 417.00 134.50 13.00 2.00 3146.00
1921 0.00 5.50 28.00 124.00 430.50 619.00 777.50 757.50 326.00 197.00 25.50 8.00 3298.50
1922 0.00 0.00 0.00 113.50 336.00 661.50 810.50 788.50 519.00 215.50 0.00 1.50 3446.00
1923 1.00 0.00 15.00 186.50 373.00 576.00 812.00 684.00 433.00 168.50 6.50 0.50 3256.00
1924 0.00 17.00 2.00 150.50 515.50 552.50 776.00 575.00 320.17 a 105.00 2.50 22.00 3038.17
1925 0.00 4.50 24.00 203.00 416.00 572.00 828.50 570.50 406.00 85.50 6.50 2.07 a 3118.57
1926 0.00 2.50 75.00 338.00 430.00 650.36 b 909.00 691.50 326.00 229.50 23.50 8.50 3683.86
1927 0.00 1.00 14.50 148.50 299.50 604.00 783.00 766.00 415.00 238.50 26.00 5.50 3301.50
1928 3.50 0.00 57.00 120.52 a 458.00 572.00 807.50 696.50 462.50 82.50 2.07 a 0.00 3262.09
1929 0.00 0.00 15.50 140.00 396.50 522.50 788.50 776.00 342.50 146.50 0.00 0.50 3128.50
1930 0.00 26.00 48.00 335.00 369.50 560.00 838.50 830.50 522.00 152.00 18.00 0.00 3699.50
1931 0.00 1.50 67.50 218.00 514.00 618.21 b 843.50 823.50 470.00 167.00 42.50 0.00 3765.71
1932 0.00 20.00 31.00 195.50 430.00 641.50 786.50 779.00 464.50 179.00 30.50 8.00 3565.50
1933 3.00 0.00 10.50 182.00 372.50 575.00 797.50 797.00 374.50 179.00 32.50 20.50 3344.00
1934 3.00 6.00 44.50 346.00 488.00 623.00 813.00 757.50 379.00 256.50 47.50 0.00 3764.00
1935 4.00 0.00 8.50 126.50 369.50 558.50 751.50 695.50 537.00 185.50 0.00 0.00 3236.50
1936 0.00 0.00 10.00 294.00 577.00 689.50 876.50 833.00 447.50 202.50 0.00 6.00 3936.00
1937 0.00 0.00 0.50 107.50 438.50 606.00 854.00 691.50 545.00 264.00 25.50 1.00 3533.50
1938 0.00 0.00 14.00 188.50 405.50 668.00 906.00 706.50 639.50 213.50 10.50 0.50 3752.50
1939 1.50 0.00 35.50 252.00 451.00 488.00 824.00 674.00 f 478.00 178.00 7.50 5.00 2720.50
1940 0.00 0.50 61.50 182.00 503.50 718.00 902.00 831.00 665.50 306.50 4.50 0.50 4175.50
1941 0.00 0.00 107.50 308.50 430.00 651.00 916.50 734.00 351.00 149.50 34.00 13.00 3695.00
1942 1.00 0.00 25.00 260.50 389.50 545.50 817.00 818.50 541.00 247.00 0.50 2.50 3648.00
1943 0.00 0.00 18.50 224.48 a 362.50 515.36 b 795.15 a 719.50 517.50 207.70 a 8.00 10.00 3378.69
1944 0.00 0.50 21.00 231.50 476.50 666.11 c 843.00 750.50 595.50 302.50 47.00 8.50 3942.61
1945 3.00 8.50 38.50 107.50 483.00 586.00 921.50 852.50 446.90 a 224.00 48.00 0.00 3719.40
1946 0.00 a 1.00 45.50 220.50 484.00 562.00 795.50 763.00 446.50 103.50 0.00 0.50 3422.00
1947 3.00 4.00 45.00 211.00 492.50 547.00 851.00 722.00 506.00 265.00 5.00 0.00 3651.50
1948 0.00 5.00 21.00 176.90 a 451.00 708.21 b 750.50 697.00 492.00 145.00 6.50 0.00 3453.11
1949 0.00 0.00 8.00 268.00 532.00 596.50 778.50 768.80 a 503.50 98.68 a 39.50 4.00 3597.48
1950 0.00 0.00 3.50 110.50 374.00 596.00 800.00 796.00 532.00 164.50 11.50 7.00 3395.00
1951 0.00 4.50 11.00 201.50 448.00 571.00 844.50 737.00 457.50 165.50 5.50 0.50 3446.50
1952 0.00 0.00 22.00 266.00 469.50 595.00 792.50 785.00 571.50 252.50 6.50 0.00 3760.50
1953 17.00 7.50 55.50 155.50 424.50 515.00 844.00 798.50 519.50 193.00 g 20.50 j 2.50 3339.50
1954 3.00 7.50 12.00 144.00 480.00 524.50 780.50 708.50 479.50 126.00 80.00 0.00 3345.50
1955 0.00 0.00 2.50 93.50 330.50 628.00 776.50 757.00 502.00 162.00 10.00 1.00 3263.00
1956 0.00 0.00 18.00 225.50 524.50 562.00 859.00 780.50 511.50 206.50 3.00 3.00 3693.50
1957 0.00 0.00 14.00 201.50 601.00 657.50 749.50 669.50 526.00 138.00 2.00 0.00 3559.00
1958 0.00 k 5.00 0.00 z 161.00 639.50 740.50 897.50 937.50 500.69 a 174.50 35.40 e 3.50 4095.09
1959 0.00 0.00 21.50 203.50 358.50 608.50 836.50 692.00 424.00 141.50 6.00 0.00 3292.00
1960 2.00 1.50 28.50 170.00 375.50 627.00 943.00 689.00 471.00 209.00 6.00 0.00 3522.50
1961 5.00 5.50 74.00 161.00 447.00 774.50 853.50 858.00 342.41 a 104.00 3.00 1.50 3629.41
1962 4.00 4.00 15.50 244.50 391.00 598.00 735.50 683.00 499.00 181.00 50.00 1.50 3407.00
1963 4.00 7.50 41.50 165.50 398.00 601.50 729.50 779.00 602.50 253.50 7.00 0.00 3589.50
1964 0.00 0.00 2.00 109.50 372.50 613.50 831.00 638.00 365.50 163.00 18.50 0.00 3113.50
1965 0.00 1.00 0.00 197.50 395.00 654.00 857.00 833.00 320.00 225.00 37.50 0.00 3520.00
1966 0.00 0.00 32.50 157.00 480.50 546.50 794.00 752.00 647.50 162.50 0.00 4.50 3577.00
1967 0.00 12.50 7.50 80.00 405.50 666.00 857.50 916.00 694.00 192.50 19.00 0.00 3850.50
1968 0.00 a 8.50 42.00 136.50 398.50 557.50 831.50 701.00 459.50 110.00 12.00 0.00 3257.00
1969 0.00 0.00 34.50 216.00 543.00 699.00 748.00 787.00 526.50 121.00 35.50 0.00 3710.50
1970 0.00 0.00 25.50 99.50 484.00 750.50 903.50 838.03 a 340.50 130.50 17.00 1.00 3590.03
1971 7.00 2.50 11.00 205.50 486.00 515.00 784.50 931.00 372.50 162.50 7.50 0.00 3485.00
1972 2.50 16.00 82.00 111.50 511.00 588.00 732.50 864.50 386.50 117.00 11.00 12.50 3435.00
1973 0.00 2.50 41.50 198.50 468.00 612.00 867.50 834.00 526.50 171.00 2.50 0.00 3724.00
1974 12.00 0.00 22.00 208.00 343.00 720.00 786.00 744.00 486.50 169.00 30.50 2.50 3523.50
1975 0.00 0.00 2.00 100.50 391.50 550.00 915.00 645.50 476.90 a 147.00 45.00 11.50 3284.90
1976 0.00 0.00 11.00 183.00 439.50 513.50 749.68 a 660.50 505.00 106.00 6.50 0.00 3174.68
1977 0.00 3.00 8.50 240.00 371.50 732.50 768.00 824.00 422.50 100.50 8.00 0.00 3478.50
1978 0.00 0.00 41.00 166.00 335.50 636.50 810.00 690.50 511.03 a 200.50 20.50 0.00 3411.53
1979 0.00 a 2.07 a 28.50 186.50 447.00 658.50 859.50 848.00 534.00 206.00 0.50 10.00 3780.57
1980 0.00 1.00 10.50 288.00 519.00 553.50 775.50 610.00 424.00 180.00 44.50 14.00 3420.00
1981 0.00 11.00 52.50 189.00 411.50 463.50 700.60 a 826.50 451.50 94.50 10.50 0.00 a 3211.10
1982 0.00 a 6.74 a 12.00 124.50 397.50 729.00 713.50 733.00 445.50 99.50 0.00 0.00 3261.24
1983 2.00 3.00 60.97 a 0.00 z 507.00 610.00 708.00 861.00 402.00 146.00 48.50 0.00 3348.47
1984 5.00 0.00 57.50 167.00 296.50 572.00 853.50 806.50 382.00 157.58 a 4.50 0.00 b 3302.08
1985 0.00 0.00 9.50 231.00 539.50 639.00 998.00 702.15 a 341.25 b 106.50 12.50 0.00 a 3579.40
1986 1.03 a 7.50 56.50 178.97 a 497.00 736.50 677.35 a 903.65 a 381.00 178.00 21.00 0.00 3638.50
1987 0.00 a 0.00 53.00 301.50 532.00 723.00 814.00 725.50 570.00 144.50 45.00 2.00 3910.50
1988 0.00 5.00 34.00 240.00 468.50 660.00 825.00 810.98 c 470.50 272.50 34.50 0.00 3820.98
1989 4.00 0.00 16.00 220.50 440.64 c 694.00 863.00 689.50 496.50 150.00 43.00 0.00 3617.14
1990 3.50 4.50 69.00 280.50 391.12 a 584.50 870.50 845.00 598.00 93.50 46.55 a 0.00 3786.67
1991 0.50 4.50 17.00 196.67 c 414.00 549.00 844.50 0.00 z 531.00 177.73 a 10.50 2.00 2747.40
1992 1.50 10.00 79.50 237.00 505.50 786.00 786.00 787.00 393.50 205.50 13.00 0.00 a 3804.50
1993 0.00 0.00 29.50 187.00 632.50 610.00 616.50 726.00 456.50 183.50 7.00 0.00 3448.50
1994 2.50 0.00 69.50 302.50 508.50 573.50 915.53 a 853.00 581.90 a 162.00 2.50 0.00 a 3971.43
1995 0.00 9.33 a 51.31 b 168.00 506.33 a 601.00 830.50 647.50 576.50 133.09 b 50.50 4.65 a 3578.71
1996 2.00 3.00 16.50 169.00 317.75 a 612.93 a 849.40 a 768.50 365.50 157.58 a 10.00 0.00 a 3272.16
1997 4.00 0.50 22.98 b 0.00 z 478.43 a 611.67 c 791.53 a 785.85 a 506.90 a 144.00 5.69 a 0.00 3351.55
1998 0.00 a 1.00 70.00 253.00 545.60 a 653.04 b 982.38 b 861.00 648.00 143.00 22.00 1.11 c 4180.12
1999 0.00 0.00 37.50 141.72 a 348.00 562.50 762.00 868.50 463.93 b 181.50 60.00 2.50 3428.15
2000 0.00 0.00 22.50 224.50 411.00 598.50 862.83 a 839.50 408.00 160.68 a 0.50 0.00 3528.02
2001 0.50 0.00 29.50 147.00 488.00 576.50 845.00 907.00 632.50 144.48 c 67.00 0.00 a 3837.48
2002 2.50 2.50 20.00 211.00 372.00 668.00 902.50 775.50 502.00 118.50 9.50 13.00 3597.00
2003 5.00 1.00 53.00 203.00 436.00 700.50 971.50 915.50 587.00 292.50 10.50 0.00 4175.50
2004 0.00 z 0.50 91.50 276.00 471.00 657.93 a 894.00 898.50 498.00 203.00 g 5.50 1.00 3793.93
2005 3.32 c 1.50 42.00 224.50 512.50 546.50 847.50 755.50 460.50 196.00 0.00 z 1.00 3590.82
2006 0.00 z 1.00 20.50 229.50 462.50 685.50 971.00 807.50 369.50 i 190.00 38.50 0.00 e 3406.00
2007 0.00 d 0.00 b 70.61 d 175.50 482.22 d 632.50 789.00 h 618.50 h 511.00 115.50 j 23.50 3.00 1898.33
2008 0.00 0.00 e 2.50 i 83.50 351.50 f 420.50 h 698.00 f 786.62 c 293.50 h 143.52 d 16.50 h 1.00 f 1013.64
2009 0.00 g 1.00 1.72 d 96.00 j 337.00 j 315.50 n 148.50 z 95.50 z 0.00 z 15.50 z 0.00 z 0.00 z 2.72
2010 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 22.50 0.00 22.50
2011 5.50 1.50 19.00 77.00 f 374.00 549.50 763.50 889.59 c 598.50 185.00 1.03 a 0.00 3387.12
2012 0.00 0.00 23.50 210.54 b 405.00 526.50 867.48 a 562.00 k 513.00 168.43 a 59.50 7.50 2781.45
2013 0.00 0.00 52.91 b 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 52.91
Period of Record Statistics
MEAN 1.16 2.61 29.92 191.76 434.49 604.33 818.36 763.33 463.90 172.43 19.56 2.43 3488.97
S.D. 2.38 4.38 23.51 67.01 78.06 73.82 72.50 86.42 86.41 56.44 17.95 4.24 287.44
SKEW 3.72 2.62 0.89 0.19 0.73 0.22 -0.01 -0.03 0.25 0.42 1.00 2.34 0.27
MAX 17.00 26.00 107.50 346.00 739.50 786.00 998.00 1010.00 694.00 316.00 80.00 22.00 4232.92
MIN 0.00 0.00 0.00 46.50 283.50 428.50 616.50 537.00 287.00 55.00 0.00 0.00 2869.57
NO YRS 116 120 118 114 116 117 113 113 115 115 116 118 101