LEWISTON WSO AP, IDAHO

Monthly Total Growing Degree Days

(105241)

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
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 888.15 a 675.50 352.50 47.00 0.00 1963.15
1949 0.00 17.00 128.00 420.00 674.00 786.00 1008.50 1026.00 737.00 232.50 165.50 25.00 5219.50
1950 3.00 33.00 94.00 234.00 492.50 717.50 1006.00 1034.50 728.50 408.00 132.50 78.50 4962.00
1951 15.50 33.00 84.50 356.00 552.50 692.00 1063.00 969.50 708.00 304.50 47.50 6.00 4832.00
1952 0.50 46.50 93.00 409.50 600.00 708.50 1026.00 992.00 770.00 495.50 44.50 15.00 5201.00
1953 143.00 51.00 141.00 306.50 457.00 597.00 1016.00 979.00 787.00 412.00 139.50 33.50 5062.50
1954 11.50 86.50 62.00 280.00 593.50 623.50 979.50 828.00 632.50 277.00 142.50 7.00 4523.50
1955 0.00 11.00 34.00 158.50 414.50 799.50 944.00 977.00 657.50 365.50 54.50 24.00 4440.00
1956 9.50 11.50 131.50 400.00 622.00 680.50 1054.50 927.00 684.50 299.00 42.50 48.00 4910.50
1957 0.00 50.00 122.50 316.00 641.00 770.50 975.00 918.00 777.50 325.50 41.50 43.00 4980.50
1958 39.00 137.00 81.50 266.50 763.00 857.50 1100.50 1126.00 671.00 406.50 130.50 46.50 5625.50
1959 44.00 15.50 125.00 322.00 446.00 761.00 1053.50 874.50 584.00 330.00 60.00 14.50 4630.00
1960 7.50 21.50 196.00 319.50 462.50 787.50 1167.50 862.50 718.00 358.50 66.00 3.00 4970.00
1961 40.50 79.50 167.00 290.50 520.50 941.50 1135.50 1191.00 590.50 303.50 25.50 26.00 5311.50
1962 40.00 58.50 98.50 405.00 455.50 745.00 996.50 922.50 725.00 356.50 131.50 32.00 4966.50
1963 9.00 63.50 167.50 273.00 619.00 772.50 939.00 1043.00 893.00 498.50 123.50 16.00 5417.50
1964 15.50 18.00 106.50 229.50 539.00 731.00 1013.00 887.50 621.00 383.50 63.00 24.00 4631.50
1965 19.50 72.00 95.00 361.00 516.00 756.00 1059.00 997.50 575.00 503.50 149.00 41.50 5145.00
1966 25.00 32.00 154.50 325.50 656.00 727.00 1016.50 1018.50 857.00 368.00 112.50 56.00 5348.50
1967 69.50 68.50 102.00 195.50 565.00 852.50 1123.50 1212.00 884.50 415.50 88.50 31.50 5608.50
1968 27.00 144.00 228.00 254.50 576.00 790.00 1128.50 924.50 686.00 323.00 84.50 19.50 5185.50
1969 0.00 2.50 143.50 320.00 663.50 890.00 1016.50 987.00 728.50 244.50 93.00 14.50 5103.50
1970 28.00 68.50 121.50 187.00 597.00 904.00 1117.00 1085.50 544.50 308.50 97.00 7.50 5066.00
1971 77.00 68.00 83.50 287.00 632.50 669.50 1072.00 1180.00 556.00 315.50 37.00 19.50 4997.50
1972 30.00 62.50 227.50 212.50 650.00 811.00 1029.50 1087.00 610.50 357.00 87.50 53.00 5218.00
1973 30.50 46.00 180.00 313.00 653.50 828.50 1148.50 1078.00 740.50 350.00 64.50 53.50 5486.50
1974 61.50 57.50 159.00 332.00 506.50 935.00 1051.50 1043.50 787.00 405.50 110.50 28.50 5478.00
1975 19.00 32.50 65.50 198.00 551.50 708.00 1170.00 942.00 784.50 353.00 117.50 52.50 4994.00
1976 33.00 50.00 90.00 305.00 610.50 688.50 1050.50 929.00 869.50 442.00 164.00 27.50 5259.50
1977 7.50 94.00 87.00 478.00 511.00 968.00 1026.50 1158.50 640.00 332.50 104.50 70.50 5478.00
1978 18.50 71.00 263.50 299.50 495.50 815.00 1056.00 963.50 656.00 379.00 52.50 11.00 5081.00
1979 0.00 25.50 195.00 295.00 593.50 813.50 1116.00 1083.50 868.50 493.00 42.50 59.00 5585.00
1980 5.50 77.50 111.00 479.00 564.00 694.00 1039.00 892.00 719.00 375.50 121.00 120.00 5197.50
1981 47.50 100.00 204.00 348.50 525.50 665.00 958.00 1169.00 765.00 295.50 141.00 39.00 5258.00
1982 18.60 a 85.00 139.00 232.00 533.00 874.00 1012.50 1064.50 716.00 353.50 67.00 31.00 5126.10
1983 79.00 121.50 221.00 275.00 603.00 753.50 946.50 1136.00 621.50 403.50 145.50 6.50 5312.50
1984 42.50 50.50 211.00 277.50 498.50 714.50 1091.50 1083.50 643.50 284.00 90.50 0.50 4988.00
1985 0.00 18.00 97.00 404.00 628.00 807.00 1238.00 913.50 504.00 278.50 54.50 0.00 4942.50
1986 49.00 87.50 272.50 314.00 623.00 927.00 895.00 1167.50 581.50 430.50 80.50 5.50 5433.50
1987 8.00 52.00 204.00 509.00 691.00 898.50 974.50 991.00 847.50 452.00 154.00 48.50 5830.00
1988 19.00 93.50 137.50 402.50 583.50 800.50 1048.50 1049.00 725.50 580.50 112.00 26.50 5578.50
1989 32.00 5.50 238.50 482.50 599.50 857.00 1068.50 972.00 781.00 445.50 218.00 45.50 5745.50
1990 90.50 93.50 259.50 511.00 582.50 826.50 1159.00 1103.50 988.50 405.50 212.00 42.00 6274.00
1991 42.00 215.50 167.00 360.00 491.50 608.50 1000.50 1087.50 766.00 365.50 69.50 31.50 5205.00
1992 44.00 93.50 282.00 413.00 713.50 935.50 1005.00 1033.00 670.00 437.50 71.50 8.50 5707.00
1993 14.50 12.50 212.00 304.00 710.50 716.50 788.00 937.00 740.00 444.50 39.50 32.00 4951.00
1994 56.50 31.50 217.00 424.50 667.50 780.00 1170.50 1089.50 822.50 377.50 25.50 30.00 5692.50
1995 38.00 138.50 164.00 296.00 614.50 711.50 1034.50 928.00 788.50 302.00 182.00 30.00 5227.50
1996 41.00 57.48 a 137.50 340.00 437.00 721.00 1079.00 1035.00 652.50 358.00 65.50 8.50 4932.48
1997 18.50 41.00 163.50 266.00 666.00 725.50 982.00 1122.00 793.00 370.00 123.00 10.50 5281.00
1998 40.00 73.00 184.50 327.50 585.00 765.00 1199.00 1128.00 878.00 309.00 114.00 47.00 5650.00
1999 34.00 57.00 138.50 259.50 473.00 714.50 987.50 1094.50 721.50 372.50 176.38 a 38.50 5067.38
2000 11.00 57.00 133.00 431.00 568.85 a 779.50 1041.50 1040.50 632.50 300.00 9.50 0.00 5004.35
2001 10.50 15.00 163.50 252.50 625.00 700.00 1040.50 1131.00 843.50 363.50 154.00 12.00 5311.00
2002 44.50 40.50 91.50 293.50 519.00 808.50 1149.00 944.00 725.00 276.50 133.00 58.00 5083.00
2003 74.50 35.00 204.50 296.50 539.50 848.00 1203.50 1105.00 794.50 491.50 76.50 13.00 5682.00
2004 23.50 49.00 290.00 420.50 575.00 835.50 1164.00 1108.50 704.50 414.00 96.00 44.50 5725.00
2005 95.50 32.50 243.50 371.50 637.50 733.00 1135.00 1090.00 689.50 429.00 69.50 44.00 5570.50
2006 78.50 69.50 153.50 358.50 659.50 856.50 1219.00 1052.00 762.00 348.50 158.00 27.50 5743.00
2007 21.50 51.00 278.50 347.50 634.00 818.50 1248.50 1039.00 735.50 381.00 99.00 28.00 5682.00
2008 18.00 74.00 83.00 217.00 651.50 764.50 1084.00 1058.50 765.50 391.50 144.00 32.50 5284.00
2009 24.50 49.00 90.00 311.50 625.50 812.50 1126.50 1077.00 844.50 282.50 81.50 14.00 5339.00
2010 77.00 94.50 190.50 331.00 460.00 705.50 1043.50 1027.00 754.00 421.00 112.00 33.50 5249.50
2011 62.50 37.00 154.50 176.00 469.50 686.00 955.50 1100.50 882.50 410.00 71.50 26.50 5032.00
2012 36.00 40.50 149.50 392.50 547.00 765.50 1165.00 1158.50 850.00 403.00 193.00 52.50 5753.00
2013 20.00 66.50 d 243.00 16.00 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 329.50
Period of Record Statistics
MEAN 32.96 59.12 157.81 324.61 577.07 777.13 1061.12 1031.75 730.11 373.12 100.35 30.38 5259.01
S.D. 28.15 37.81 62.19 81.97 77.43 83.65 87.12 91.63 98.62 68.62 48.17 21.60 344.96
SKEW 1.33 1.37 0.33 0.29 -0.09 0.22 -0.11 -0.17 0.04 0.42 0.37 1.20 0.16
MAX 143.00 215.50 290.00 511.00 763.00 968.00 1248.50 1212.00 988.50 580.50 218.00 120.00 6274.00
MIN 0.00 2.50 34.00 158.50 414.50 597.00 788.00 828.00 504.00 232.50 9.50 0.00 4440.00
NO YRS 65 65 65 64 64 64 64 65 65 65 65 65 64