LEWISTON WSO AP, IDAHO

Monthly Total Growing Degree Days

(105241)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 578.15 a 378.50 108.50 0.00 0.00 1065.15
1949 0.00 0.00 5.50 135.50 371.00 486.00 698.50 716.00 437.00 34.50 13.00 0.00 2897.00
1950 0.00 0.00 0.00 28.50 208.00 419.50 696.00 724.50 440.50 121.50 11.50 0.00 2650.00
1951 0.00 0.00 2.00 97.50 247.00 392.00 753.00 659.50 408.00 107.50 0.00 0.00 2666.50
1952 0.00 0.00 13.50 152.00 290.50 408.50 716.00 682.00 470.00 197.00 0.00 0.00 2929.50
1953 12.00 2.50 17.50 94.50 162.50 297.00 706.00 669.00 487.00 133.00 1.50 0.00 2582.50
1954 0.00 1.00 1.50 39.50 298.50 324.50 669.50 518.00 341.50 70.00 1.50 0.00 2265.50
1955 0.00 0.00 0.50 14.50 136.50 499.50 634.00 667.00 358.00 97.00 3.00 0.00 2410.00
1956 0.00 0.00 5.50 143.00 323.50 380.50 744.50 617.00 384.50 86.00 0.00 1.50 2686.00
1957 0.00 7.00 3.00 60.00 331.00 470.50 665.00 608.00 480.00 68.00 0.00 0.00 2692.50
1958 0.00 10.50 1.50 26.00 454.50 557.50 790.50 816.00 378.00 148.00 7.50 2.00 3192.00
1959 0.50 0.00 0.00 76.50 157.50 461.00 743.50 564.50 289.50 81.00 8.00 1.00 2383.00
1960 0.00 0.00 50.00 84.50 165.00 487.50 857.50 552.50 418.00 95.00 4.00 0.00 2714.00
1961 0.00 0.00 9.50 65.00 226.00 641.50 825.50 881.00 293.00 100.50 0.00 0.00 3042.00
1962 0.00 0.00 1.50 131.50 155.50 445.00 686.50 612.50 425.00 74.00 8.00 0.00 2539.50
1963 0.00 1.00 17.50 52.00 312.50 472.50 629.00 733.00 593.00 225.50 3.00 0.00 3039.00
1964 0.00 0.00 21.00 23.00 248.50 431.00 703.00 577.50 321.00 102.00 3.50 0.00 2430.50
1965 0.00 7.00 7.00 114.00 216.50 456.00 749.00 687.50 287.00 203.00 8.00 0.00 2735.00
1966 0.00 0.00 26.00 78.50 349.00 427.00 706.50 708.50 557.00 107.50 0.50 0.00 2960.50
1967 0.00 3.50 1.00 4.00 267.50 552.50 813.50 902.00 584.50 132.00 1.00 0.00 3261.50
1968 0.00 12.00 21.00 55.50 274.50 490.00 818.50 614.50 390.50 51.50 1.50 0.00 2729.50
1969 0.00 0.00 21.00 69.00 368.00 590.00 706.50 677.00 428.50 43.00 1.50 0.00 2904.50
1970 0.00 0.00 3.00 12.50 290.50 604.00 807.00 775.50 253.00 73.50 2.50 0.00 2821.50
1971 9.00 1.50 4.50 56.50 326.00 369.50 762.00 870.00 259.00 122.00 1.00 0.00 2781.00
1972 0.00 8.00 39.00 26.50 343.50 511.00 719.50 777.00 318.00 100.50 6.00 2.00 2851.00
1973 0.00 0.00 9.00 76.00 343.50 528.50 838.50 768.00 440.50 81.50 3.00 0.00 3088.50
1974 0.00 0.00 17.00 80.50 210.50 635.00 741.50 733.50 487.00 109.00 10.50 0.00 3024.50
1975 0.00 0.00 2.00 13.50 251.50 408.00 860.00 632.00 484.50 108.50 25.00 5.50 2790.50
1976 0.00 0.00 3.50 64.50 300.50 390.50 740.50 619.00 569.50 152.50 14.00 0.00 2854.50
1977 0.00 3.50 2.00 220.00 206.00 668.00 716.50 848.50 340.00 62.50 0.00 6.50 3073.50
1978 0.00 0.00 67.50 59.00 195.50 515.00 746.00 653.50 358.50 126.00 8.00 0.00 2729.00
1979 0.00 0.00 9.50 69.00 287.00 513.50 806.00 773.50 568.50 215.50 0.00 5.00 3247.50
1980 0.00 1.00 0.00 209.00 256.50 394.00 729.00 582.00 419.00 129.50 17.50 17.00 2754.50
1981 0.00 3.00 5.50 123.00 231.50 365.00 648.00 859.00 465.00 53.50 13.00 0.00 2766.50
1982 0.00 a 11.00 7.50 48.00 230.50 574.00 702.50 754.50 416.00 86.50 1.00 1.00 2832.50
1983 0.00 3.50 18.50 67.00 306.00 453.50 636.50 826.00 322.50 102.50 14.50 0.00 2750.50
1984 0.00 0.00 12.00 50.50 197.50 414.50 781.50 773.50 348.50 116.50 3.00 0.00 2697.50
1985 0.00 0.00 6.00 160.00 328.50 507.00 928.00 603.50 213.50 60.00 4.50 0.00 2811.00
1986 0.00 16.50 41.00 64.50 324.50 627.00 585.00 857.50 281.50 129.50 1.00 0.00 2928.00
1987 0.00 0.00 15.00 227.00 381.00 598.50 664.50 681.00 547.50 154.50 11.50 0.50 3281.00
1988 0.00 2.50 7.00 142.00 287.50 500.50 738.50 739.00 425.50 300.00 11.50 0.00 3154.00
1989 0.00 0.00 26.50 197.50 289.50 557.00 758.50 662.00 481.00 171.00 44.50 3.50 3191.00
1990 3.50 4.00 42.50 220.50 275.50 526.50 849.00 793.50 688.50 117.00 44.50 0.00 3565.00
1991 0.50 8.50 13.00 92.50 184.00 308.50 690.50 777.50 466.00 142.00 1.50 0.00 2684.50
1992 0.00 0.00 36.50 155.50 403.50 635.50 695.00 723.00 370.00 160.50 1.00 0.00 3180.50
1993 0.00 0.00 13.00 42.00 402.50 416.50 478.00 627.00 440.00 159.00 4.50 0.00 2582.50
1994 0.00 0.00 43.00 142.50 357.50 480.00 860.50 779.50 522.50 103.00 0.00 0.00 3288.50
1995 2.50 21.50 14.50 49.50 304.50 414.00 724.50 618.00 488.50 60.50 18.00 0.00 2716.00
1996 0.00 0.00 a 7.50 82.50 146.00 421.00 769.00 725.00 353.00 150.00 0.00 0.00 2654.00
1997 0.00 0.00 18.00 55.00 359.00 425.50 672.00 812.00 493.00 97.50 2.50 0.00 2934.50
1998 0.00 0.00 28.00 92.50 278.50 465.00 889.00 818.00 578.00 65.50 3.50 0.00 3218.00
1999 0.00 0.00 17.50 60.50 196.50 415.50 677.50 784.50 421.50 101.50 27.41 a 0.00 2702.41
2000 0.00 0.00 3.50 148.50 265.57 a 479.50 731.50 730.50 337.00 64.00 0.00 0.00 2760.07
2001 0.00 0.00 16.50 71.50 322.00 402.50 730.50 821.00 543.50 85.50 7.50 0.00 3000.50
2002 0.00 2.00 2.00 56.50 228.00 508.50 839.00 634.00 425.00 59.50 5.00 9.00 2768.50
2003 4.50 0.00 33.00 69.00 249.50 548.00 893.50 795.00 494.50 224.50 7.00 0.00 3318.50
2004 0.00 0.00 65.00 136.50 266.00 535.50 854.00 798.50 404.50 147.50 5.00 2.50 3215.00
2005 8.50 0.00 30.50 106.50 327.50 433.00 825.00 780.00 389.50 145.00 0.00 0.00 3045.50
2006 0.00 0.00 13.00 89.50 351.00 556.50 909.00 742.00 462.00 92.50 35.00 0.00 3250.50
2007 0.00 1.50 55.00 94.00 326.50 518.50 938.50 729.00 436.50 132.00 2.50 5.50 3239.50
2008 0.00 0.00 1.00 42.50 344.00 466.50 774.00 748.50 465.50 126.50 13.00 0.00 2981.50
2009 1.00 0.00 3.50 79.00 317.00 512.50 816.50 767.00 545.50 64.50 0.00 0.00 3106.50
2010 0.00 0.50 13.50 101.50 179.00 405.50 733.50 717.00 454.00 142.00 16.50 0.00 2763.00
2011 4.50 1.00 12.50 12.00 165.00 386.50 645.50 790.50 582.50 133.50 5.50 0.00 2739.00
2012 0.00 0.00 11.00 137.50 243.50 465.50 855.00 848.50 550.00 154.50 31.00 0.00 3296.50
2013 0.00 0.00 d 57.50 6.00 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 57.50
Period of Record Statistics
MEAN 0.72 2.06 16.51 88.26 275.67 477.34 751.12 721.75 431.68 116.45 7.69 0.96 2892.95
S.D. 2.25 4.25 16.85 54.42 72.14 83.47 87.12 91.63 96.93 49.44 10.22 2.71 266.65
SKEW 3.58 2.67 1.38 0.83 -0.02 0.22 -0.11 -0.17 0.08 1.09 2.06 4.01 0.11
MAX 12.00 21.50 67.50 227.00 454.50 668.00 938.50 902.00 688.50 300.00 44.50 17.00 3565.00
MIN 0.00 0.00 0.00 4.00 136.50 297.00 478.00 518.00 213.50 34.50 0.00 0.00 2265.50
NO YRS 65 65 65 64 64 64 64 65 65 65 65 65 64