Boise, ID. Direct Normal Data Boise, ID. Hourly Average Direct Normal Data 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 48 183 228 255 271 279 262 223 174 25 0 0 0 1948 Feb 0 0 0 0 8 180 274 341 379 379 365 335 300 268 168 11 0 0 3007 Mar 0 0 0 1 155 305 379 455 503 502 498 446 406 359 275 108 0 0 4391 Apr 0 0 0 102 318 444 523 535 534 543 519 507 500 459 389 243 24 0 5639 May 0 0 22 238 371 461 520 549 575 574 569 542 521 471 417 311 143 1 6285 Jun 0 0 78 370 508 585 644 668 687 698 684 663 612 590 518 428 293 24 8050 Jul 0 0 32 407 573 672 734 766 790 808 817 807 760 714 647 537 360 21 9443 Aug 0 0 0 227 513 629 701 740 767 776 799 795 761 719 613 472 144 0 8655 Sep 0 0 0 38 404 551 637 700 748 746 746 711 672 631 513 209 1 0 7306 Oct 0 0 0 0 196 467 578 644 672 654 627 609 568 495 242 4 0 0 5756 Nov 0 0 0 0 15 165 252 300 325 340 340 323 275 175 12 0 0 0 2521 Dec 0 0 0 0 0 49 180 241 288 307 306 278 220 119 0 0 0 0 1988 Values in Watt hours/meter^2 per hour Boise, ID. Daily Average Direct Normal Data 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 ---- ---- ---- ---- ---- 9.25 9.79 8.72 7.66 5.15 2.34 1.42 ---- 1995 2.09 4.37 3.82 5.46 5.83 6.57 9.48 9.58 7.55 6.11 1.93 1.51 5.36 1996 1.95 3.34 4.15 5.55 6.44 8.87 9.79 8.60 6.81 5.29 3.03 1.53 5.45 1997 2.38 3.81 4.65 5.58 7.45 5.07* 8.75 8.72 6.85 5.29 3.63 3.27 5.46 1998 1.69 2.59 4.63 4.99 4.54 7.94 9.36 9.32 6.70 5.87 1.43 2.15 5.11 1999 2.05 1.60 3.54 6.09 7.60 7.76 10.12 7.08 8.86 6.83 2.76 2.05 5.55 2000 1.53 2.35 5.56 6.15 5.71 9.41 8.81 8.56 3.46* ---- ---- ---- ---- 2001 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 2002 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 2003 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 2004 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 2005 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 2006 ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- Average 1.95 3.01 4.39 5.64 6.26 7.84 9.44 8.65 6.84 5.76 2.52 1.99 5.37 % SD 16 34 16 8 18 20 5 9 24 11 31 35 3 Values in average daily KWhr/meter^2 per Day * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.