Hermiston, OR. Ambient Temperature Hermiston, OR. Hourly Average Ambient Temperature For 1994 to 2006 Latitude: 45.82 degrees Longitude: 119.28 degrees Altitude: 180 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 1.2 1.0 0.9 0.8 0.7 0.6 0.6 0.6 1.0 2.1 3.2 4.1 4.7 5.0 5.0 4.6 3.8 3.0 2.6 2.2 2.0 1.7 1.5 1.3 2.3 Feb 1.9 1.6 1.4 1.1 0.9 0.7 0.5 0.8 2.3 4.1 5.6 6.9 7.8 8.5 8.8 8.6 7.8 6.2 5.1 4.2 3.5 3.0 2.6 2.3 4.0 Mar 5.3 4.9 4.5 4.2 4.0 3.7 3.8 5.2 7.3 9.0 10.5 11.8 12.6 13.3 13.6 13.5 12.9 11.6 9.9 8.8 7.6 6.9 6.4 5.9 8.2 Apr 7.7 7.2 6.7 6.2 5.8 5.8 7.2 9.4 11.3 12.9 14.3 15.5 16.4 17.0 17.3 17.3 16.9 15.8 14.0 12.3 10.9 9.7 9.0 8.4 11.5 May 11.5 11.0 10.4 9.9 9.5 10.3 12.3 14.1 15.7 17.2 18.4 19.6 20.5 21.2 21.6 21.6 21.2 20.4 18.9 16.9 15.4 14.0 13.1 12.4 15.7 Jun 15.1 14.4 13.7 13.2 13.0 14.1 16.1 17.7 19.2 20.7 22.0 23.3 24.3 25.1 25.6 25.9 25.6 24.9 23.6 21.3 19.4 17.9 16.8 15.9 19.5 Jul 19.4 18.6 17.9 17.3 16.8 17.6 19.9 21.7 23.4 25.1 26.7 28.3 29.6 30.5 31.3 31.6 31.6 31.0 29.4 26.5 24.2 22.4 21.2 20.3 24.3 Aug 18.7 18.0 17.3 16.6 16.0 16.0 17.9 20.3 22.1 23.9 25.6 27.2 28.5 29.6 30.3 30.6 30.4 29.5 27.1 24.6 22.7 21.2 20.2 19.4 23.1 Sep 14.3 13.7 13.1 12.5 12.0 11.7 12.5 15.2 17.6 19.5 21.3 22.8 24.0 25.0 25.6 25.7 25.1 23.2 20.8 19.1 17.5 16.4 15.5 14.7 18.3 Oct 8.3 8.0 7.6 7.2 6.9 6.6 6.6 8.1 10.6 12.6 14.2 15.5 16.5 17.1 17.4 17.2 15.9 13.9 12.6 11.2 10.3 9.7 9.0 8.5 11.3 Nov 3.8 3.6 3.5 3.4 3.2 3.1 3.0 3.3 4.5 5.9 7.1 8.1 8.8 9.2 9.2 8.6 7.4 6.5 5.9 5.4 4.9 4.6 4.4 4.1 5.5 Dec 1.2 1.1 0.9 0.8 0.7 0.6 0.5 0.5 0.9 1.9 2.8 3.5 4.0 4.3 4.2 3.7 2.9 2.4 2.0 1.8 1.6 1.5 1.4 1.2 1.9 Values in Degrees Celsius Hermiston, OR. Daily Average Ambient Temperature For 1994 to 2006 Latitude: 45.82 degrees Longitude: 119.28 degrees Altitude: 180 meters Year\Mth Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly 1994 ---- ---- ---- ---- ---- ---- 24.9 22.6 19.3 11.2 4.7 2.2 ---- 1995 1.0 5.9 7.8 10.6 15.9 18.3 23.1 20.5 18.9 10.4 7.8 1.9 11.9 1996 1.0 1.0 7.3 12.0 13.5 18.5 24.0 22.1 16.7 10.8 4.5 0.9 11.1 1997 1.3 4.4 8.0 10.6 17.0 18.7 22.8 23.9 18.0 11.0 6.0 2.6 12.0 1998 2.6 6.1 8.2 11.1 14.7 19.5 25.8 24.0 20.0 10.3 7.9 2.6 12.8 1999 4.9 6.3 7.4 10.1 13.9 18.6 22.0 23.3 16.9 10.7 7.8 4.5 12.2 2000 2.6 4.5 7.7 13.1 15.7 20.2 23.2 22.7 16.9 10.7 2.4 0.6 11.7 2001 2.1 3.2 8.3 10.6 17.0 18.3 23.2 24.0 19.3 11.4 6.0 3.3 12.3 2002 3.7 3.8 6.1 11.4 14.9 20.4 25.0 22.3 17.9 9.7 4.9 4.0 12.1 2003 4.7 4.3 10.2 11.1 15.3 20.9 25.9 23.5 19.0 13.3 4.0 1.8 12.9 2004 -1.2 3.5 10.0 12.2 15.4 20.2 25.0 24.0 17.4 12.4 5.0 2.8 12.2 2005 0.7 3.0 9.4 11.8 17.1 19.0 24.4 23.6 17.4 12.6 4.7 -1.0 11.9 2006 5.6 2.8 7.8 11.4 16.1 20.2 25.5 22.6 18.1 10.8 5.8 0.3 12.3 Average 2.4 4.1 8.2 11.3 15.5 19.4 24.2 23.0 18.1 11.2 5.5 2.0 12.1 % SD 84 38 14 7 8 5 5 4 6 9 30 75 4 Values in average daily Degrees Celsius * Less than 15 days of data in month. Univ. of Oregon Solar Monitoring Lab.