Salem, OR. Ambient Temperature Salem, OR. Hourly Average Ambient Temperature For 2004 to 2013 Latitude: 44.94 degrees Longitude: 123.03 degrees Altitude: 60 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 4.8 4.7 4.6 4.5 4.3 4.3 4.2 4.3 4.5 5.4 6.4 7.2 7.9 8.5 8.8 8.6 7.9 7.1 6.6 6.2 5.8 5.6 5.3 5.1 5.9 Feb 5.5 5.2 5.0 4.8 4.6 4.4 4.3 4.4 5.2 6.6 8.0 9.4 10.4 11.2 11.6 11.7 10.9 9.5 8.5 7.8 7.2 6.7 6.2 5.8 7.3 Mar 7.3 7.0 6.7 6.4 6.2 6.1 6.0 6.4 7.7 9.1 10.5 11.8 12.6 13.3 13.7 13.7 13.2 12.0 10.9 10.0 9.3 8.7 8.1 7.7 9.3 Apr 8.9 8.4 8.0 7.7 7.4 7.2 7.5 8.4 10.3 11.9 13.3 14.5 15.6 16.3 16.7 16.8 16.4 15.4 13.9 12.4 11.4 10.6 10.0 9.4 11.6 May 11.9 11.4 11.0 10.6 10.3 10.3 10.9 12.1 13.9 15.7 17.1 18.4 19.4 20.2 20.9 21.1 20.7 19.7 18.1 16.3 15.0 14.0 13.3 12.7 15.2 Jun 14.5 14.0 13.5 13.1 12.8 12.9 13.6 14.8 16.3 18.1 19.6 21.0 22.1 23.0 23.6 23.8 23.6 22.8 21.4 19.2 17.7 16.6 15.9 15.2 17.9 Jul 17.8 17.0 16.4 15.8 15.4 15.3 16.0 17.3 19.2 21.7 23.8 25.8 27.4 28.9 30.0 30.6 30.5 29.4 27.3 24.2 22.1 20.7 19.6 18.6 22.1 Aug 17.7 17.0 16.4 15.9 15.5 15.2 15.6 16.8 19.2 21.6 23.5 25.5 27.2 28.6 29.7 30.3 30.0 28.6 26.2 23.3 21.6 20.4 19.3 18.4 21.8 Sep 15.4 14.8 14.3 13.8 13.4 13.1 13.2 14.4 17.0 19.1 21.0 22.7 24.2 25.3 26.2 26.5 25.7 23.4 21.4 19.8 18.6 17.6 16.8 16.0 18.9 Oct 10.9 10.5 10.2 9.9 9.6 9.4 9.3 10.0 11.4 13.1 14.7 16.0 17.1 17.9 18.5 18.3 17.1 15.6 14.4 13.5 12.7 12.2 11.6 11.2 13.1 Nov 7.1 6.9 6.7 6.6 6.4 6.3 6.3 6.4 7.0 8.2 9.3 10.3 11.1 11.5 11.7 11.4 10.3 9.5 8.9 8.4 8.1 7.8 7.5 7.2 8.4 Dec 4.2 4.0 3.9 3.8 3.7 3.6 3.6 3.6 3.8 4.8 5.7 6.5 7.1 7.6 7.7 7.4 6.5 6.0 5.6 5.2 4.9 4.7 4.5 4.3 5.1 Values in Degrees Celsius Salem, OR. Daily Average Ambient Temperature For 2004 to 2013 Latitude: 44.94 degrees Longitude: 123.03 degrees Altitude: 60 meters Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly 2004 7.3 8.1 11.7 13.9 15.5 19.2 22.9 22.8 17.6 13.9 7.7 6.9 14.0 2005 6.7 7.2 11.3 12.0 15.9 17.0 22.7 23.0 18.4 13.5 7.1 5.3 13.4 2006 7.5 6.7 8.2 12.5 16.2 19.8 22.9 21.6 19.5 13.1 8.8 5.2 13.5 2007 4.5 7.7 11.0 11.6 15.6 17.5 22.2 21.2 17.9 11.9 7.8 5.5 12.9 2008 3.8 7.8 7.4 9.4 15.6 16.9 21.9 21.1 19.3 13.0 9.9 4.0 12.5 2009 5.4 6.2 7.7 11.6 16.2 18.7 23.3 21.2 19.1 13.0 8.8 3.8 13.0 2010 8.6 9.3 9.7 10.8 13.3 16.8 21.5 20.9 18.5 13.7 8.2 7.0 13.2 2011 6.5 5.6 8.4 9.4 12.7 17.1 20.3 22.0 20.6 13.1 7.5 4.1 12.3 2012 6.1 7.0 7.5 12.1 14.9 16.4 20.6 22.2 19.7 14.1 9.6 6.4 13.1 2013 3.5 7.4 10.3 12.6 16.1 19.2 22.9 22.0 18.2 12.1 8.2 2.9 13.0 Average 6.0 7.3 9.3 11.6 15.2 17.9 22.1 21.8 18.9 13.1 8.4 5.1 13.1 % SD 28 14 18 12 8 7 5 3 5 6 11 27 4 Values in average daily Degrees Celsius * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.