BOISE WSFO AIRPORT, IDAHO

Monthly Total Growing Degree Days

(101022)

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
1940 14.00 48.00 186.50 302.00 660.00 887.50 1081.50 1059.50 694.00 444.00 37.50 35.00 5449.50
1941 0.00 40.00 182.50 303.00 572.00 687.00 1099.00 958.00 537.00 338.50 145.00 62.50 4924.50
1942 2.50 1.50 72.50 353.00 402.00 623.00 1105.50 1020.00 696.00 395.50 64.50 6.50 4742.50
1943 5.50 8.50 103.50 420.50 434.00 649.00 1032.00 958.00 798.50 438.50 51.50 9.00 4908.50
1944 0.50 10.00 56.00 269.50 576.00 622.50 1000.00 951.50 712.00 557.00 70.50 4.50 4830.00
1945 12.00 26.50 83.50 205.00 516.00 634.00 1081.00 1036.00 598.00 479.50 73.00 19.00 4763.50
1946 3.00 6.00 135.50 356.50 547.50 761.00 1081.50 1031.00 630.50 181.50 39.00 46.50 4819.50
1947 1.50 25.00 173.50 286.50 689.50 652.50 1087.50 998.50 685.50 469.50 26.50 0.50 5096.50
1948 24.50 15.00 44.50 244.50 505.50 796.00 940.50 942.00 656.00 384.00 52.50 0.00 4605.00
1949 0.00 5.50 119.50 402.50 665.50 770.00 1066.50 1043.00 768.50 212.00 153.00 4.50 5210.50
1950 8.00 37.50 59.00 229.50 436.00 708.00 1031.00 1012.00 694.00 522.50 130.00 9.00 4876.50
1951 9.00 44.00 45.50 321.00 520.00 669.50 1106.00 999.00 709.00 297.00 53.50 5.00 4778.50
1952 0.00 5.00 45.50 375.50 544.50 724.50 1039.00 1018.50 760.00 523.50 28.00 6.50 5070.50
1953 106.00 31.00 118.50 213.00 376.50 580.00 1055.50 977.00 778.50 398.00 194.50 1.50 4830.00
1954 41.00 56.00 65.50 297.00 617.00 640.00 1095.00 875.00 645.50 342.00 150.00 11.50 4835.50
1955 0.00 0.00 34.00 147.00 422.00 798.50 969.00 1072.50 673.50 418.00 62.00 47.50 4644.00
1956 23.50 20.00 149.00 320.00 602.00 736.00 1089.00 920.50 724.00 326.50 38.50 8.50 4957.50
1957 0.00 32.00 98.00 261.00 563.50 780.00 1027.50 951.50 758.00 295.00 26.50 19.00 4812.00
1958 3.50 96.50 76.50 235.50 753.00 780.50 1055.00 1111.50 659.50 473.00 123.50 9.00 5377.00
1959 50.00 25.50 87.50 320.00 394.00 858.00 1115.50 930.50 592.00 297.50 25.50 0.00 4696.00
1960 1.50 5.00 155.00 279.50 447.50 866.00 1260.50 898.50 779.00 391.50 68.50 8.00 5160.50
1961 13.00 73.50 165.50 245.00 554.00 985.00 1123.50 1172.00 514.50 286.00 37.00 9.00 5178.00
1962 2.50 18.00 54.00 371.00 494.50 763.50 998.50 951.50 755.50 404.00 108.50 19.50 4941.00
1963 0.00 114.00 165.50 252.50 646.00 716.00 997.00 1036.50 927.50 553.50 146.00 0.00 5554.50
1964 2.00 0.00 44.00 174.50 472.50 674.50 1080.50 904.00 586.50 399.50 68.00 67.50 4473.50
1965 24.50 40.00 85.00 307.00 465.00 739.00 1032.50 965.00 514.50 507.50 178.50 8.00 4866.50
1966 16.00 5.00 173.00 283.00 664.00 749.00 1030.00 993.50 786.00 296.00 131.50 16.00 5143.00
1967 37.00 36.00 112.50 125.50 510.50 781.00 1191.50 1179.00 858.50 336.50 96.00 6.00 5270.00
1968 1.50 86.00 189.00 212.00 552.50 834.50 1156.50 890.50 688.50 385.00 83.50 50.00 5129.50
1969 35.00 5.50 130.00 314.50 652.50 787.00 1021.00 1005.50 725.00 191.50 92.50 30.50 4990.50
1970 63.50 62.00 72.50 126.00 543.00 866.00 1124.50 1108.00 533.50 249.50 119.00 22.00 4889.50
1971 34.00 39.00 93.50 276.50 619.50 745.00 1075.50 1196.00 574.00 316.00 48.00 8.00 5025.00
1972 14.00 54.00 196.50 212.00 638.00 827.00 1038.00 1069.50 561.50 382.00 80.00 37.50 5110.00
1973 11.50 46.50 106.50 272.50 634.00 827.00 1102.00 1022.00 692.50 384.00 142.50 32.00 5273.00
1974 44.50 25.50 134.00 291.00 476.50 951.50 1047.00 983.00 760.00 377.50 89.50 17.50 5197.50
1975 2.50 30.50 96.50 146.00 501.50 730.50 1188.00 930.00 765.50 389.00 108.00 30.50 4918.50
1976 4.50 37.00 61.00 225.00 596.00 677.50 1026.00 859.00 722.00 335.00 116.50 0.00 4659.50
1977 0.00 25.50 63.50 421.50 423.00 905.50 1014.50 1040.00 659.00 407.50 79.50 44.00 5083.50
1978 34.00 37.00 276.00 255.00 444.00 733.50 1018.00 926.00 640.50 405.50 58.00 5.50 4833.00
1979 0.00 23.00 128.50 269.00 551.00 801.50 1056.50 965.50 819.50 445.00 36.00 14.50 5110.00
1980 18.00 79.00 70.50 380.00 534.00 677.50 1019.00 843.00 676.00 365.50 112.00 41.50 4816.00
1981 11.00 50.00 146.50 314.00 454.50 695.50 959.50 1058.50 708.50 268.50 165.50 47.00 4879.00
1982 0.00 50.50 83.50 186.00 460.00 773.00 934.50 1012.00 610.50 336.50 20.50 28.50 4495.50
1983 29.00 99.50 152.00 216.50 511.50 711.50 910.00 1082.50 624.00 427.00 147.50 4.50 4915.50
1984 0.00 0.00 80.00 182.50 457.50 649.50 1059.50 1099.00 600.50 248.50 48.50 0.00 4425.50
1985 0.00 0.00 28.50 363.50 571.00 815.00 1169.00 905.00 486.50 276.00 54.00 0.00 4668.50
1986 6.50 116.50 247.00 248.00 590.00 961.00 917.50 1113.00 519.50 389.50 80.50 0.00 5189.00
1987 3.50 25.50 159.00 481.50 688.50 904.50 967.00 930.00 768.50 462.00 103.50 51.00 5544.50
1988 3.50 60.50 118.00 384.00 553.50 921.00 1073.00 977.00 650.00 615.00 98.00 0.00 5453.50
1989 0.00 2.50 159.00 391.50 504.50 852.50 1145.00 928.50 699.00 356.00 55.50 0.00 5094.00
1990 25.50 25.50 157.50 441.00 485.00 806.50 1120.50 1052.50 896.50 346.00 92.50 0.00 5449.00
1991 0.00 83.00 127.00 252.00 462.00 679.00 1106.50 1133.50 772.00 405.50 32.50 8.00 5061.00
1992 21.00 95.00 276.50 445.00 751.00 894.00 971.50 1050.00 701.00 448.00 13.50 5.00 5671.50
1993 0.00 0.00 135.00 243.00 714.50 656.00 775.50 885.50 690.50 407.00 22.50 33.50 4563.00
1994 1.00 30.00 213.50 378.50 650.00 835.50 1145.00 1119.00 804.00 321.00 18.00 10.00 5525.50
1995 42.00 115.50 145.00 249.50 522.50 715.00 1034.00 966.50 771.50 289.50 171.50 40.00 5062.50
1996 3.50 56.50 157.50 297.50 478.00 799.50 1139.00 1076.50 652.50 397.00 82.50 65.00 5205.00
1997 17.50 20.50 198.50 281.00 710.50 779.00 1014.50 1101.50 831.00 374.00 101.50 2.00 5431.50
1998 54.00 53.00 175.00 296.50 505.50 700.00 1215.50 1138.00 892.50 363.00 126.50 26.50 5546.00
1999 15.00 30.50 151.50 235.00 487.50 790.00 1043.50 1088.50 720.50 443.00 229.00 2.50 5236.50
2000 13.50 75.50 111.50 428.50 611.00 857.50 1117.50 1112.00 688.50 378.50 11.00 0.00 5405.00
2001 0.00 12.00 197.50 261.50 662.50 819.50 1064.00 1199.50 851.00 419.00 169.00 0.50 5656.00
2002 5.00 14.00 113.00 313.50 593.00 887.00 1228.50 958.00 753.50 324.50 94.00 52.00 5336.00
2003 57.50 29.00 215.00 284.50 581.00 889.50 1256.50 1157.50 801.50 571.50 54.50 43.00 5941.00
2004 0.00 18.50 267.50 414.00 579.00 878.50 1177.00 1081.00 709.00 419.50 41.00 28.50 5613.50
2005 5.00 22.00 178.50 315.00 601.50 731.00 1187.00 1139.00 699.50 424.50 48.50 17.50 5369.00
2006 17.00 35.00 113.50 352.00 650.00 929.50 1286.00 1053.50 762.00 362.00 164.00 20.50 5745.00
2007 8.00 54.50 277.00 351.00 696.00 916.00 1335.00 1100.50 741.00 370.50 117.00 26.50 5993.00
2008 2.50 22.00 62.50 204.50 634.00 813.00 1167.00 1113.50 781.50 423.50 133.50 15.00 5372.50
2009 6.50 28.50 117.50 319.50 669.50 834.00 1194.00 1089.50 917.00 273.50 98.50 1.00 5549.00
2010 23.50 45.50 156.00 274.50 420.50 788.50 1109.00 1050.00 828.00 528.00 130.00 6.00 5359.50
2011 10.00 39.00 138.00 186.50 481.00 727.50 1102.50 1190.50 941.00 453.00 55.50 22.00 5346.50
2012 14.50 27.50 244.50 440.00 586.00 819.50 1279.50 1193.50 858.50 423.00 201.00 65.00 6152.50
2013 0.00 4.00 195.50 16.50 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 199.50
Period of Record Statistics
MEAN 14.32 36.72 132.53 292.23 555.32 778.42 1081.67 1026.83 712.88 385.54 89.38 19.10 5124.73
S.D. 19.13 29.75 62.06 81.22 92.03 92.61 95.79 90.21 103.10 87.30 51.16 19.18 367.99
SKEW 2.18 1.00 0.48 0.17 0.15 0.09 0.05 0.05 -0.03 0.12 0.53 0.94 0.43
MAX 106.00 116.50 277.00 481.50 753.00 985.00 1335.00 1199.50 941.00 615.00 229.00 67.50 6152.50
MIN 0.00 0.00 28.50 125.50 376.50 580.00 775.50 843.00 486.50 181.50 11.00 0.00 4425.50
NO YRS 74 74 74 73 73 73 73 73 73 73 73 73 73