BOISE WSFO AIRPORT, IDAHO

Monthly Total Heating Degree Days

(101022)

Base Temperature = 65 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 991.00 756.50 602.00 448.00 155.50 55.00 1.50 0.00 153.00 331.00 885.00 922.00 5300.50
1941 985.00 715.00 607.00 447.00 234.50 122.50 0.00 26.50 223.00 436.50 688.00 930.50 5415.50
1942 1377.50 937.00 767.00 400.50 380.50 149.50 2.00 37.00 104.50 397.50 759.50 978.00 6290.50
1943 1142.00 814.00 777.50 333.00 344.00 137.00 14.00 20.00 36.50 369.00 748.00 997.00 5732.00
1944 1239.00 897.50 827.00 483.50 222.50 167.50 8.00 1.50 128.50 223.00 789.50 1114.50 6102.00
1945 1019.00 767.50 774.00 570.00 263.50 170.50 0.00 15.50 227.00 303.50 760.50 1060.50 5931.50
1946 1115.00 874.50 658.50 402.50 230.50 58.50 2.50 4.50 165.00 616.00 818.00 892.50 5838.00
1947 1293.50 754.50 623.50 469.50 144.00 127.50 0.00 9.50 137.50 315.50 866.50 1043.50 5785.00
1948 992.00 955.50 840.00 508.50 301.00 44.00 7.00 16.00 156.50 394.50 841.00 1225.50 6281.50
1949 1695.00 961.00 677.00 347.50 172.00 71.50 3.00 1.00 90.50 574.50 612.00 1052.50 6257.50
1950 1230.00 833.50 781.00 524.00 339.00 118.00 10.50 9.00 146.50 265.00 672.00 892.50 5821.00
1951 1114.50 789.50 864.50 431.00 262.00 113.00 1.00 23.50 93.50 490.50 790.50 1164.00 6137.50
1952 1190.00 1003.00 876.00 383.00 240.00 92.00 13.00 8.00 66.00 252.50 900.00 960.00 5983.50
1953 744.00 802.00 701.50 567.00 402.50 176.50 2.00 15.00 82.50 380.00 590.50 1045.50 5509.00
1954 883.50 733.00 796.50 454.00 208.00 178.50 13.50 42.00 150.00 438.00 644.50 1069.00 5610.50
1955 1287.00 1059.00 893.00 629.50 360.50 72.00 46.50 0.00 195.00 370.00 884.00 920.00 6716.50
1956 978.00 1092.50 715.00 434.50 231.00 96.50 12.00 34.00 100.00 465.00 891.00 1065.50 6115.00
1957 1350.00 855.00 706.50 490.50 229.50 83.00 5.00 6.00 78.50 480.00 858.00 949.50 6091.50
1958 1039.50 639.00 754.50 517.00 123.50 74.00 2.50 3.00 148.50 306.00 743.00 881.00 5231.50
1959 905.50 780.50 744.00 430.00 392.00 46.00 13.50 16.00 219.00 477.50 908.50 1149.50 6082.00
1960 1273.00 912.00 685.50 480.50 336.00 25.50 0.00 68.50 66.00 387.50 734.00 1071.00 6039.50
1961 996.00 666.50 638.50 508.00 240.00 15.00 0.00 0.00 246.00 493.50 839.50 1059.00 5702.00
1962 1361.50 918.00 820.00 385.00 280.50 87.50 8.50 34.00 57.00 375.00 709.50 917.50 5954.00
1963 1293.50 607.00 644.00 503.50 168.50 128.00 3.50 2.00 23.00 257.00 640.00 1144.00 5414.00
1964 1209.00 1121.00 852.00 591.00 327.50 131.00 0.00 63.50 172.00 375.50 843.00 926.00 6611.50
1965 958.00 787.50 802.50 443.00 325.00 84.50 7.50 31.50 238.50 274.00 620.50 1083.50 5656.00
1966 1010.50 889.00 676.00 475.00 176.00 101.00 8.00 18.50 69.00 483.00 660.00 1047.00 5613.00
1967 893.00 748.50 714.50 635.00 286.50 84.00 0.00 0.00 51.00 442.00 730.00 1154.00 5738.50
1968 1102.00 695.50 592.50 563.50 239.50 60.00 0.00 61.50 123.50 390.00 691.50 926.50 5446.00
1969 952.50 806.00 696.50 435.50 152.00 78.50 4.00 13.50 95.50 593.50 760.00 942.50 5530.00
1970 894.00 666.50 732.50 635.50 253.50 80.00 0.00 0.00 244.50 542.00 656.50 976.50 5681.50
1971 964.00 771.00 769.50 473.50 183.50 81.50 11.50 6.00 214.50 498.00 759.50 1078.50 5811.00
1972 1057.00 826.50 604.50 550.50 197.50 47.00 11.50 0.50 225.50 412.00 736.50 1276.50 5945.50
1973 1063.00 716.50 682.00 477.50 189.00 95.50 4.50 14.00 106.00 392.00 699.00 825.00 5264.00
1974 1105.50 736.00 695.50 459.00 311.00 44.00 10.50 11.50 55.50 397.50 699.00 988.00 5513.00
1975 1142.00 787.00 730.00 615.00 282.50 80.00 7.00 23.00 76.50 404.00 766.50 1042.00 5955.50
1976 1019.00 894.50 865.00 531.50 196.00 136.00 3.50 40.00 80.00 441.50 725.50 1106.50 6039.00
1977 1425.50 876.00 780.50 347.00 362.00 8.50 9.50 35.00 150.00 367.50 762.00 861.00 5984.50
1978 868.00 751.00 508.00 495.00 336.50 76.50 5.50 41.00 179.00 377.00 849.00 1178.50 5665.00
1979 1513.00 861.00 675.50 490.50 248.00 73.50 5.00 2.50 29.00 333.50 910.00 906.50 6048.00
1980 1076.50 731.50 742.50 375.50 265.00 136.50 0.00 42.00 109.50 417.00 756.50 991.00 5643.50
1981 965.50 789.00 638.00 441.50 323.00 104.00 15.50 5.50 139.50 506.50 631.00 920.50 5479.50
1982 1240.00 981.00 735.00 594.00 317.00 88.00 29.50 2.50 188.00 438.50 870.50 1038.50 6522.50
1983 905.00 657.50 631.50 539.00 315.50 87.00 39.00 0.00 150.50 348.00 690.50 1296.50 5660.00
1984 1358.50 1011.00 717.50 572.50 335.50 167.00 0.00 8.00 209.50 566.00 777.50 1305.50 7028.50
1985 1422.00 1099.00 902.00 404.50 231.00 56.00 0.00 28.50 267.00 515.50 1121.50 1625.00 7672.00
1986 1104.00 672.50 528.00 503.00 285.50 16.00 37.00 2.50 266.00 385.50 739.50 1148.50 5688.00
1987 1155.50 768.50 644.50 293.00 146.50 42.50 25.50 21.00 88.00 313.00 729.50 997.00 5224.50
1988 1206.50 790.00 695.00 368.00 265.00 62.00 4.00 6.50 164.50 183.00 730.00 1178.50 5653.00
1989 1250.50 1171.50 662.50 364.50 284.50 33.00 0.00 31.00 103.00 427.50 768.00 1073.50 6169.50
1990 957.00 865.00 642.50 312.00 294.50 85.00 6.00 10.50 28.50 439.50 716.00 1453.50 5810.00
1991 1259.00 656.50 682.00 501.50 313.00 105.50 0.00 0.00 58.50 415.50 829.00 1034.50 5855.00
1992 988.00 665.50 498.50 315.50 95.00 55.50 7.00 40.50 122.50 348.50 915.50 1132.00 5184.00
1993 1248.50 1013.00 723.00 507.00 143.50 160.00 57.00 47.50 128.50 375.00 966.50 983.00 6352.50
1994 1000.50 849.00 586.00 385.50 153.00 66.50 10.00 1.50 36.50 455.50 974.50 1074.50 5593.00
1995 893.00 659.50 664.50 505.50 263.50 115.00 5.50 25.00 90.50 491.50 619.00 991.50 5324.00
1996 1007.50 866.50 645.00 452.50 301.00 58.00 1.00 7.00 167.50 410.50 711.50 890.00 5518.00
1997 1020.50 789.50 607.50 482.50 133.00 45.00 18.50 0.00 64.00 417.00 661.50 1050.00 5289.00
1998 810.50 694.00 644.00 459.00 277.50 89.00 0.00 0.00 53.00 417.50 641.00 1064.00 5149.50
1999 921.00 785.50 659.00 526.00 318.00 97.00 8.50 14.00 105.00 333.50 544.00 1026.00 5337.50
2000 956.50 677.50 671.00 324.50 183.50 43.50 4.00 0.00 132.50 398.00 970.00 1052.50 5413.50
2001 1173.00 873.00 594.00 511.00 195.50 72.50 6.50 0.00 24.00 363.00 631.50 1063.50 5507.50
2002 1037.50 868.50 753.50 436.50 240.00 66.00 0.00 4.00 99.00 483.00 731.00 858.00 5577.00
2003 816.00 788.00 575.50 469.00 267.00 28.00 0.00 0.00 73.50 262.00 819.50 862.00 4960.50
2004 1134.50 872.00 521.00 336.00 213.50 48.00 0.00 11.50 99.00 361.00 804.50 918.50 5319.50
2005 999.50 788.50 599.00 436.00 191.00 105.50 0.50 3.00 110.00 352.00 825.50 1099.50 5510.00
2006 886.50 847.50 704.00 398.50 195.50 10.00 0.00 10.50 108.50 428.00 650.00 1032.50 5271.50
2007 1110.50 731.00 517.00 403.00 145.50 40.00 0.00 0.00 105.50 405.50 723.50 1010.00 5191.50
2008 1115.00 840.50 749.00 552.00 185.00 101.00 0.00 7.50 50.50 369.50 643.00 1039.50 5652.50
2009 1045.50 786.50 724.00 439.00 191.00 25.50 0.00 15.50 41.50 512.50 708.50 1186.50 5676.00
2010 856.50 692.50 630.00 486.00 363.50 54.50 4.00 21.50 47.50 274.50 782.00 930.00 5142.50
2011 1033.00 826.00 646.50 563.50 302.50 94.50 0.00 0.00 12.00 344.00 749.50 1045.50 5617.00
2012 935.00 772.00 554.50 335.50 221.00 66.50 0.00 0.00 18.50 353.00 594.50 882.00 4732.50
2013 1390.50 823.50 609.00 8.50 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 45.50 z 2823.00
Period of Record Statistics
MEAN 1093.92 821.07 692.53 465.18 250.44 83.49 7.35 15.36 118.71 400.44 759.83 1042.14 5747.51
S.D. 182.48 121.44 94.63 82.80 72.56 41.65 11.07 16.92 66.07 86.55 107.00 136.52 473.76
SKEW 0.72 0.77 0.17 -0.01 0.03 0.45 2.57 1.26 0.49 0.09 0.63 1.48 1.17
MAX 1695.00 1171.50 902.00 635.50 402.50 178.50 57.00 68.50 267.00 616.00 1121.50 1625.00 7672.00
MIN 744.00 607.00 498.50 293.00 95.00 8.50 0.00 0.00 12.00 183.00 544.00 825.00 4732.50
NO YRS 74 74 74 73 73 73 73 73 73 73 73 73 73