BROWNLEE DAM, IDAHO

Monthly Total Heating Degree Days

(101180)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201211
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
1966 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 21.50 m 3.00 5.00 8.00 314.00 547.00 851.50 1728.50
1967 881.00 717.00 672.00 520.00 208.00 35.00 0.00 0.00 18.50 326.10 e 627.50 1024.00 5029.10
1968 1029.00 711.50 515.00 455.00 157.50 28.00 0.00 36.50 67.50 345.50 669.50 936.00 4951.00
1969 1025.50 846.00 674.50 336.50 85.00 50.00 g 0.00 0.00 23.50 433.50 610.00 823.00 4857.50
1970 917.50 682.00 668.50 517.50 178.50 34.50 2.50 0.00 153.00 412.00 648.00 971.50 5185.50
1971 983.50 743.50 754.50 408.50 126.50 75.00 2.00 0.00 100.50 402.50 736.00 1023.50 5356.00
1972 1070.00 847.00 569.50 461.50 139.50 20.50 2.00 0.00 135.50 277.00 661.00 1183.00 5366.50
1973 1099.00 736.00 606.00 370.00 148.50 59.50 0.00 2.00 61.00 350.50 709.50 866.50 5008.50
1974 1124.00 751.50 650.00 432.00 226.00 30.00 a 14.50 1.50 24.00 291.50 642.50 942.50 5130.00
1975 1109.50 855.50 752.50 601.50 282.50 59.50 0.00 a 10.50 20.50 382.00 755.50 996.00 5825.50
1976 1085.00 917.00 821.50 491.00 110.50 108.50 1.00 26.35 a 35.50 328.50 632.00 1025.00 5581.85
1977 1261.50 815.00 767.00 312.00 310.50 6.50 7.00 18.50 145.50 351.00 752.50 893.50 5640.50
1978 934.00 740.50 534.50 464.00 283.50 42.50 2.50 28.50 140.50 295.00 875.00 1273.00 5613.50
1979 1548.50 937.00 639.00 466.50 138.50 i 45.00 a 7.00 0.00 4.50 263.00 827.50 959.50 5697.50
1980 1082.00 803.50 635.00 248.50 151.00 97.00 0.00 8.00 41.00 316.00 664.50 910.00 4956.50
1981 896.50 309.00 q 657.00 149.50 k 245.00 61.55 a 5.50 0.00 80.00 403.50 582.00 860.00 3791.05
1982 1130.00 945.00 678.50 491.50 182.50 49.50 1.00 0.00 114.50 388.50 801.50 1015.00 5797.50
1983 941.00 706.50 576.00 441.00 63.00 l 36.00 16.00 0.00 122.00 305.50 644.00 1168.50 4956.50
1984 1166.50 975.00 643.50 433.50 224.50 90.00 0.00 2.00 113.00 406.50 681.00 1160.50 5896.00
1985 1270.48 a 1020.44 a 762.00 239.00 120.50 10.34 a 0.00 4.00 152.50 416.50 1003.50 1265.50 6264.77
1986 1124.00 713.50 453.00 377.00 237.00 6.00 19.00 0.00 160.00 270.50 672.00 978.00 5010.00
1987 1117.50 742.00 587.00 192.41 a 62.00 20.50 5.00 6.50 50.50 310.00 758.00 926.50 4777.91
1988 1075.00 784.00 566.50 273.50 149.66 b 22.00 0.00 b 0.00 51.50 96.00 648.50 1007.50 4674.16
1989 1135.00 1138.00 653.50 235.50 141.50 4.50 0.00 22.50 24.50 317.50 626.50 893.00 5192.00
1990 867.00 821.50 553.50 193.50 183.50 58.50 3.00 3.50 0.00 366.00 652.50 1220.00 4922.50
1991 1159.00 678.00 635.50 406.50 222.50 60.00 0.00 0.00 14.50 265.00 729.50 927.50 5098.00
1992 920.00 620.00 392.50 243.00 45.00 38.00 4.00 16.00 51.00 208.50 749.00 1042.50 4329.50
1993 1123.00 930.00 669.00 387.50 102.50 72.00 18.50 17.00 53.00 250.00 828.00 905.00 5355.50
1994 911.50 846.00 528.00 289.00 122.50 54.50 6.00 0.00 10.00 291.50 840.50 987.00 4886.50
1995 911.00 637.00 628.00 412.50 152.50 75.50 3.50 10.50 24.50 409.50 349.00 m 467.00 m 3264.50
1996 648.00 j 285.50 r 157.50 v 85.50 v 31.50 z 0.00 z 0.00 z 0.00 t 0.00 z 276.00 m 620.17 a 0.00 z 620.17
1997 940.85 a 748.00 571.00 397.00 97.50 9.50 8.00 0.00 30.00 338.00 623.00 958.50 4721.35
1998 891.00 679.50 589.00 e 379.00 204.50 38.50 0.00 0.00 16.50 327.00 586.50 974.00 4685.50
1999 886.50 809.00 619.00 417.00 233.50 60.52 a 5.50 2.58 a 50.50 257.50 538.50 927.00 4807.10
2000 957.00 696.00 618.00 243.00 116.00 42.93 a 0.00 i 0.00 b 81.00 293.50 796.00 934.50 4777.93
2001 1049.50 840.50 562.00 439.50 119.00 51.50 2.58 a 0.00 5.50 276.00 555.50 954.50 4856.08
2002 945.00 874.50 712.00 326.00 174.50 47.00 0.00 0.00 b 25.50 346.00 642.50 797.00 4890.00
2003 795.00 705.50 508.50 378.50 203.00 10.00 0.00 0.00 31.00 196.00 739.50 814.50 4381.50
2004 1038.00 831.00 467.00 254.50 160.50 17.00 0.00 4.13 a 58.00 254.00 644.50 840.00 4568.63
2005 923.50 746.50 547.00 384.00 140.00 63.50 0.00 0.00 54.00 283.00 731.00 1043.00 4915.50
2006 867.00 824.00 643.00 324.50 97.50 0.00 0.00 2.50 57.00 265.05 a 0.00 z 958.00 4038.55
2007 1073.00 719.50 466.50 311.00 111.00 26.50 0.00 c 0.00 50.50 370.50 684.50 912.00 4725.00
2008 1099.50 851.00 707.00 482.00 162.00 63.00 0.00 0.00 39.50 345.50 582.00 997.68 a 5329.18
2009 1069.50 820.50 717.50 370.00 168.50 29.00 0.00 3.50 14.00 457.50 693.00 1116.50 5459.50
2010 861.50 702.50 592.00 437.50 306.00 64.50 0.50 8.00 36.50 234.50 690.00 900.00 4833.50
2011 989.42 a 805.26 a 0.00 z 476.38 a 246.50 58.50 0.00 a 0.00 3.50 298.63 a 690.50 948.00 4516.69
2012 618.00 j 753.50 562.50 272.50 166.33 e 53.50 0.00 0.00 12.00 331.50 565.00 c 0.00 z 2716.83
Period of Record Statistics
MEAN 1029.18 796.97 616.48 377.10 169.88 44.00 3.10 5.21 55.77 318.85 687.93 979.78 5111.71
S.D. 138.27 105.55 91.15 97.51 63.62 25.72 4.99 8.80 46.73 69.22 94.78 115.31 439.33
SKEW 1.17 0.94 -0.10 -0.12 0.40 0.28 2.02 1.98 0.93 -0.48 0.95 0.93 0.59
MAX 1548.50 1138.00 821.50 601.50 310.50 108.50 19.00 36.50 160.00 457.50 1003.50 1273.00 6264.77
MIN 795.00 620.00 392.50 192.41 45.00 0.00 0.00 0.00 0.00 96.00 538.50 797.00 4329.50
NO YRS 44 44 44 44 43 44 45 46 46 46 45 44 36