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 83 178 277 344 355 323 250 139 20 0 0 0 1983 Feb 0 0 0 0 2 44 163 305 433 513 547 523 433 312 134 8 0 0 3418 Mar 0 0 0 1 24 116 264 424 567 648 671 635 536 401 232 58 0 0 4578 Apr 0 0 0 18 70 209 381 539 656 737 754 728 644 501 335 144 13 0 5727 May 0 0 8 41 115 273 450 612 738 810 823 785 695 560 399 217 56 1 6585 Jun 0 0 13 42 124 294 479 654 787 872 900 858 762 629 460 276 104 7 7260 Jul 0 0 8 32 99 276 470 652 805 901 943 925 833 691 503 303 112 7 7561 Aug 0 0 1 22 73 241 437 624 780 880 916 896 809 664 459 238 47 0 7087 Sep 0 0 0 7 47 199 393 579 733 823 855 811 701 534 322 91 2 0 6097 Oct 0 0 0 1 22 141 313 482 612 677 685 634 529 356 126 3 0 0 4581 Nov 0 0 0 0 3 54 163 281 378 433 435 385 282 135 10 0 0 0 2560 Dec 0 0 0 0 0 16 90 185 277 327 334 292 207 83 2 0 0 0 1814 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 ---- ---- ---- ---- ---- 7.66 7.61 6.84 6.28 4.24 2.23 1.64 ---- 1995 1.99 3.75 4.02 5.55 6.03 6.39 7.39 7.15 6.06 4.76 2.11 1.46 4.72 1996 2.03 3.23 4.47 5.70 6.67 7.33 7.58 7.18 5.84 4.30 2.67 1.57 4.88 1997 2.20 3.82 4.80 5.70 7.06 6.69 7.27 7.19 5.88 4.46 3.04 2.59 5.06 1998 1.89 2.70 4.71 5.85 5.47 6.84 7.45 7.43 5.84 4.86 2.10 2.16 4.78 1999 2.36 2.35 4.50 5.96 7.04 7.16 8.03 6.49 6.74 5.15 2.47 1.78 5.02 2000 1.84 2.77 5.23 6.18 6.49 7.67 7.49 7.15 5.93 4.18 2.53 1.60 4.92 2001 2.31 3.43 4.68 5.52 7.24 7.28 7.08 7.19 6.13 4.40 2.79 1.55 4.97 2002 1.98 4.10 4.30 6.00 7.09 7.38 7.41 7.15 5.97 5.08 3.22 1.57 5.10 2003 1.84 3.70 4.29 5.02 6.67 7.95 7.78 6.77 6.31 4.82 2.68 1.66 4.96 2004 1.64 3.21 5.24 6.54 6.41 7.48 7.56 6.84 5.99 4.06 2.45 1.72 4.93 2005 1.87 4.05 4.89 5.34 5.81 7.21 7.90 7.40 6.30 4.54 2.66 1.85 4.98 2006 1.89 4.05 3.81 5.38 7.04 7.35 7.74 7.35 5.99 4.70 2.33 2.43 5.01 Average 1.99 3.43 4.58 5.73 6.58 7.26 7.56 7.09 6.10 4.58 2.56 1.81 4.94 % SD 11 17 10 7 9 6 3 4 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.