Gladstone, OR. Ambient Temperature Gladstone, OR. Hourly Average Ambient Temperature For 1980 to 2006 Latitude: 45.50 degrees Longitude: 122.50 degrees Altitude: 100 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 3.7 3.6 3.4 3.3 3.2 3.1 3.0 3.0 3.2 4.0 5.1 5.9 6.4 6.8 6.8 6.5 5.9 5.3 4.9 4.6 4.3 4.1 4.0 3.8 4.5 Feb 4.1 3.9 3.6 3.5 3.3 3.1 3.0 3.0 3.9 5.1 6.4 7.6 8.4 8.9 9.1 8.9 8.3 7.3 6.4 5.9 5.4 5.0 4.7 4.4 5.6 Mar 5.6 5.3 5.0 4.8 4.5 4.3 4.3 5.0 6.4 7.8 9.1 10.1 10.9 11.4 11.6 11.5 11.0 10.1 9.1 8.3 7.6 7.0 6.5 6.0 7.6 Apr 7.0 6.5 6.1 5.8 5.5 5.4 6.0 7.5 8.9 10.3 11.6 12.5 13.4 13.9 14.1 14.0 13.6 12.9 11.7 10.4 9.6 8.8 8.2 7.6 9.6 May 9.8 9.3 8.8 8.4 8.1 8.4 9.5 10.9 12.5 13.8 15.0 16.0 16.8 17.4 17.7 17.7 17.5 16.9 15.8 14.2 13.0 12.0 11.2 10.5 13.0 Jun 12.4 11.8 11.3 10.9 10.5 11.1 12.3 13.6 15.0 16.3 17.5 18.5 19.4 20.2 20.7 21.0 20.8 20.2 19.2 17.7 16.1 15.0 14.0 13.2 15.8 Jul 15.2 14.4 13.7 13.2 12.7 13.2 14.5 15.9 17.4 19.0 20.4 21.8 23.0 24.1 25.0 25.3 25.3 24.8 23.6 21.7 19.7 18.3 17.1 16.1 19.0 Aug 15.1 14.3 13.7 13.2 12.7 12.6 13.8 15.3 16.9 18.6 20.0 21.5 22.7 23.9 24.7 25.0 24.9 24.2 22.6 20.6 19.2 17.9 16.8 15.9 18.6 Sep 12.8 12.2 11.6 11.2 10.8 10.5 10.9 12.6 14.4 16.2 17.7 19.2 20.2 21.0 21.4 21.5 20.9 19.8 18.1 16.8 15.8 14.9 14.1 13.3 15.7 Oct 9.0 8.7 8.3 8.1 7.8 7.7 7.6 8.4 9.9 11.4 12.9 14.1 14.9 15.4 15.6 15.4 14.5 13.2 12.1 11.3 10.6 10.1 9.6 9.2 11.1 Nov 5.6 5.5 5.3 5.2 5.2 5.1 5.0 5.1 5.8 6.9 7.9 8.8 9.4 9.6 9.5 9.1 8.2 7.5 7.0 6.7 6.4 6.1 5.9 5.7 6.8 Dec 3.4 3.3 3.2 3.2 3.1 3.0 3.0 3.0 3.2 3.9 4.8 5.4 6.0 6.2 6.2 5.7 5.1 4.6 4.3 4.1 3.9 3.7 3.6 3.5 4.1 Values in Degrees Celsius Gladstone, OR. Daily Average Ambient Temperature For 1980 to 2006 Latitude: 45.50 degrees Longitude: 122.50 degrees Altitude: 100 meters Year\Mth Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly 1980 ---- ---- ---- ---- ---- ---- ---- 14.0 13.3 9.4 5.4 3.5 ---- 1981 3.1 3.4 6.2 7.6 9.9 11.7 14.7 17.2 13.3 7.6 5.3 2.5 8.6 1982 0.6 2.7 4.1 5.5 9.6 11.5 13.7 14.9 12.5 8.2 2.7 1.2 7.3 1983 2.9 4.2 5.9 6.9 10.8 11.4 13.2 14.6 11.2 10.6 7.2 1.4 8.4 1984 5.3 5.8 8.6 8.2 12.0 14.9 19.4 19.8 16.3 9.6 6.2 1.8 10.7 1985 2.8 4.4 6.1 11.2 13.0 15.7 22.1 19.0 16.2* ---- ---- ---- ---- 1999 ---- ---- ---- ---- ---- ---- ---- 19.6 17.9 12.7 9.7 6.3 ---- 2000 4.6 6.7 7.5 12.1 13.5 18.1 19.4 19.0 17.2 12.4 5.9 4.6 11.8 2001 5.6 5.7 8.8 9.3 16.0 15.6 18.5 20.1 17.4 11.5 8.9 5.5 11.9 2002 5.1 7.0 6.7 10.7 12.8 17.7 20.5 20.1 17.4 12.1 8.9 6.5 12.2 2003 7.8 6.8 9.1 9.6 13.8 18.8 21.7 20.5 18.4 13.8 6.6 5.5 12.7 2004 3.5 7.3 10.6 13.1 14.6 18.2 21.5 21.1 16.1 12.7 6.8 6.0 12.6 2005 5.8 6.4 10.3 10.3 15.1 15.7 20.7 20.7 16.0 12.5 6.4 4.4 12.0 2006 6.7 5.5 7.5 11.2 15.0 18.3 21.0 19.5 17.7 11.2 8.4 4.4 12.2 Average 4.5 5.5 7.6 9.7 13.0 15.6 18.9 18.6 15.8 11.1 6.8 4.1 11.0 % SD 44 27 25 23 16 18 17 13 14 17 28 46 18 Values in average daily Degrees Celsius * Less than 15 days of data in month. Univ. of Oregon Solar Monitoring Lab.