Boise, ID. Ambient Temperature Boise, ID. Hourly Average Ambient Temperature For 1994 to 2006 Latitude: 43.62 degrees Longitude: 116.21 degrees Altitude: 701 meters Mon\Hr 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Avg Jan 1.0 0.8 0.6 0.4 0.4 0.3 0.2 0.0 0.1 0.6 1.5 2.5 3.3 3.9 4.3 4.5 4.5 3.8 3.1 2.7 2.2 1.9 1.5 1.3 1.9 Feb 2.3 1.9 1.5 1.1 0.9 0.7 0.4 0.3 0.7 1.9 3.1 4.4 5.5 6.3 7.0 7.4 7.5 7.0 6.0 5.1 4.3 3.7 3.2 2.7 3.5 Mar 6.2 5.7 5.2 4.7 4.4 4.0 3.7 3.8 5.0 6.3 7.8 9.1 10.2 10.9 11.5 12.1 12.2 11.8 11.1 10.0 9.2 8.5 7.6 7.0 7.8 Apr 8.9 8.2 7.7 7.1 6.7 6.4 6.2 7.1 8.7 10.1 11.4 12.7 13.7 14.4 15.0 15.5 15.6 15.4 14.8 13.6 12.3 11.3 10.5 9.8 11.0 May 13.2 12.4 11.6 10.9 10.4 10.0 10.4 11.9 13.6 15.0 16.2 17.4 18.4 19.1 19.7 20.2 20.3 20.2 19.9 18.9 17.4 16.1 15.1 14.2 15.5 Jun 17.4 16.3 15.4 14.7 14.0 13.7 14.4 16.0 17.7 19.2 20.5 21.8 23.0 24.0 24.7 25.2 25.5 25.4 25.1 24.3 22.6 20.9 19.8 18.7 20.0 Jul 22.5 21.3 20.3 19.4 18.7 18.1 18.6 20.3 22.4 24.1 25.7 27.2 28.6 29.7 30.6 31.4 31.8 31.6 31.3 30.5 28.4 26.6 25.3 23.9 25.3 Aug 21.6 20.6 19.6 18.9 18.2 17.5 17.4 18.7 21.0 22.8 24.4 26.2 27.6 28.7 29.6 30.4 30.8 30.7 30.2 28.8 26.8 25.2 23.8 22.6 24.2 Sep 16.4 15.7 15.0 14.3 13.7 13.2 12.7 13.7 15.6 17.5 19.5 21.2 22.5 23.5 24.3 24.9 25.1 24.8 23.6 21.9 20.4 19.1 18.0 17.1 18.9 Oct 10.0 9.4 8.8 8.3 7.8 7.4 7.1 7.2 8.5 10.4 12.4 14.0 15.3 16.2 16.9 17.4 17.4 16.6 15.1 13.7 12.7 11.7 10.9 10.2 11.9 Nov 4.3 4.0 3.6 3.4 3.2 3.1 2.9 2.8 3.3 4.3 5.6 6.8 7.8 8.5 9.0 9.3 9.0 8.1 7.1 6.5 5.9 5.4 4.9 4.6 5.6 Dec 0.7 0.6 0.3 0.2 -0.0 -0.2 -0.3 -0.4 -0.3 0.2 1.1 2.0 2.8 3.3 3.8 4.0 3.7 2.9 2.4 1.9 1.6 1.3 1.0 0.8 1.4 Values in Degrees Celsius Boise, ID. Daily Average Ambient Temperature 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 ---- ---- ---- ---- ---- 20.3 25.9 25.3 20.0 11.2 1.8 0.3 ---- 1995 3.4 6.4 7.7 10.0 14.6 18.4 23.6 22.5 19.5 10.6 7.9 1.5 12.2 1996 1.4 2.9 7.9 11.2 13.8 20.0 25.4 23.8 17.0 12.1 6.1 3.9 12.1 1997 1.0 3.6 8.5 10.1 18.0 19.2 23.1 24.3 20.2 11.5 6.7 0.0 12.2 1998 4.9 5.3 7.6 10.7 13.8 17.9 26.2 25.2 21.2 11.4 7.6 0.2 12.7 1999 2.7 3.7 7.3 9.5 13.9 19.4 23.6 24.2 18.1 12.9 9.2 0.7 12.2 2000 2.4 6.1 7.2 13.3 15.8 21.1 24.7 24.5 17.4 11.6 1.2 0.1 12.1 2001 -1.8 1.6 8.5 9.9 17.5 19.9 23.7 26.0 20.3 12.3 7.4 0.3 12.2 2002 0.6 1.6 5.4 11.0 15.7 21.2 26.7 21.8 18.7 10.1 5.5 4.1 11.9 2003 4.4 3.3 9.1 10.1 15.6 21.4 27.3 25.2 19.6 14.9 4.0 4.0 13.3 2004 -0.9 2.2 10.0 12.7 15.0 20.8 25.7 23.9 17.6 12.4 4.0 2.6 12.2 2005 1.1 3.5 8.4 11.1 15.6 18.5 26.0 24.9 17.8 12.5 3.7 -0.4 11.9 2006 3.5 2.4 6.4 11.7 17.0 21.8 27.6 23.3 18.4 11.0 7.1 0.7 12.6 Average 1.9 3.5 7.8 11.0 15.5 20.0 25.3 24.2 18.9 11.9 5.5 1.4 12.3 % SD 109 46 15 11 9 6 6 5 7 10 44 119 3 Values in average daily Degrees Celsius * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.