Boise, ID. Global Data on a 25° Tilt Facing Southwest Boise, ID. Hourly Average Global Data on a 25° Tilt Facing Southwest For 1994 to 2006 Latitude: 43.62 degrees Longitude: 116.21 degrees Altitude: 701 meters Mon\Hr 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Total Jan 0 0 0 0 0 13 84 178 275 339 351 318 246 137 19 0 0 0 1959 Feb 0 0 0 0 2 45 164 306 430 508 540 515 426 305 131 8 0 0 3381 Mar 0 0 0 1 25 120 268 426 565 644 664 628 529 395 229 58 0 0 4552 Apr 0 0 0 18 73 216 387 542 656 733 748 721 637 495 331 143 13 0 5713 May 0 0 8 41 123 282 457 616 738 807 818 779 689 554 396 215 58 1 6581 Jun 0 0 13 42 134 305 488 659 788 869 893 850 754 623 455 273 106 7 7261 Jul 0 0 8 32 108 287 479 657 806 897 935 915 823 682 497 300 114 6 7545 Aug 0 0 1 22 78 249 441 624 774 869 902 880 793 649 449 233 48 0 7014 Sep 0 0 0 7 50 207 398 580 729 815 845 799 689 524 315 92 1 0 6051 Oct 0 0 0 1 23 146 316 481 608 669 675 624 519 348 127 3 0 0 4538 Nov 0 0 0 0 3 56 165 280 375 427 429 378 277 133 9 0 0 0 2532 Dec 0 0 0 0 0 17 91 185 274 323 329 287 203 82 1 0 0 0 1791 Values in Watt hours/meter^2 per hour Boise, ID. Daily Average Global Data on a 25° Tilt Facing Southwest For 1994 to 2006 Latitude: 43.62 degrees Longitude: 116.21 degrees Altitude: 701 meters Year\Mth Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly 1994 ---- ---- ---- ---- ---- 7.68 7.61 6.30 6.22 4.19 2.21 1.62 ---- 1995 1.98 3.72 4.01 5.56 6.06 6.42 7.41 7.16 6.04 4.74 2.10 1.45 4.72 1996 2.02 3.21 4.46 5.71 6.69 7.38 7.60 7.18 5.82 4.28 2.65 1.56 4.88 1997 2.18 3.79 4.79 5.71 7.08 6.72 7.28 7.18 5.85 4.44 3.01 2.56 5.05 1998 1.88 2.70 4.70 5.85 5.48 6.86 7.46 7.41 5.81 4.83 2.09 2.15 4.78 1999 2.34 2.33 4.48 5.96 7.06 7.17 8.04 6.47 6.70 5.10 2.45 1.76 5.00 2000 1.83 2.75 5.20 6.17 6.49 7.68 7.48 7.11 5.89 4.14 2.50 1.58 4.90 2001 2.28 3.40 4.65 5.51 7.24 7.29 7.07 7.15 6.07 4.37 2.76 1.53 4.94 2002 1.96 4.05 4.27 5.97 7.07 7.36 7.37 7.09 5.91 5.02 3.17 1.55 5.06 2003 1.81 3.65 4.25 4.99 6.64 7.92 7.73 6.72 6.26 4.79 2.66 1.64 4.92 2004 1.62 3.16 5.19 6.51 6.38 7.45 7.52 6.79 5.94 4.01 2.40 1.69 4.89 2005 1.83 3.97 4.84 5.30 5.77 7.17 7.85 7.33 6.24 4.47 2.61 1.81 4.93 2006 1.86 3.98 3.77 5.32 7.00 7.30 7.68 7.30 5.93 4.63 2.29 2.38 4.95 Average 1.97 3.39 4.55 5.71 6.58 7.26 7.55 7.01 6.05 4.54 2.53 1.79 4.92 % SD 11 17 10 7 9 6 3 5 4 8 13 20 2 Values in average daily KWhr/meter^2 per Day * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.