Eugene, OR. Relative Humidity Eugene, OR. Hourly Average Relative Humidity For 1982 to 2010 Latitude: 44.05 degrees Longitude: 123.07 degrees Altitude: 150 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 85.8 86.2 86.6 86.8 86.9 86.9 87.0 87.0 86.6 84.6 81.4 77.9 75.2 73.4 72.7 73.3 75.8 78.8 81.1 82.6 83.8 84.5 85.2 85.4 82.3 Feb 83.4 84.1 84.6 85.1 85.4 85.6 85.8 85.7 83.9 80.1 75.1 70.5 67.5 65.3 64.1 64.4 66.3 69.6 73.3 76.3 78.5 80.2 81.6 82.7 77.5 Mar 81.0 82.0 82.7 83.4 84.0 84.4 84.7 83.2 79.1 73.1 67.3 62.9 59.4 57.0 55.9 56.0 57.7 60.9 65.4 69.4 72.7 75.3 77.7 79.7 72.3 Apr 78.0 79.8 81.2 82.4 83.2 83.7 82.7 78.8 72.5 66.0 60.8 56.7 53.9 51.8 50.8 50.7 52.3 55.2 59.3 63.9 67.5 70.4 73.2 75.7 67.9 May 75.0 77.4 79.3 80.9 82.0 82.0 79.0 73.4 66.8 61.0 56.3 53.0 50.5 48.3 47.1 47.1 48.3 50.5 54.1 58.9 63.3 66.4 69.3 72.3 64.3 Jun 72.3 74.8 77.0 78.9 80.3 79.7 76.0 70.4 64.7 59.2 54.5 50.6 47.6 45.3 43.5 42.8 44.0 46.3 49.7 54.6 59.5 63.2 66.3 69.3 61.3 Jul 67.6 70.7 73.4 75.9 77.8 77.6 73.7 67.8 61.4 55.4 49.8 44.9 40.9 37.5 35.1 33.8 34.4 36.5 40.4 46.3 52.1 56.8 60.7 64.2 55.6 Aug 69.1 72.2 75.1 77.5 79.3 80.5 77.7 71.4 63.9 57.2 50.9 45.7 41.2 37.5 34.8 33.6 34.4 37.2 41.6 47.5 53.4 58.1 62.1 65.8 57.0 Sep 74.7 77.3 79.5 81.3 82.6 83.6 83.0 77.7 69.6 61.6 55.0 49.4 44.8 41.1 38.8 38.3 39.9 43.3 48.6 54.4 59.5 64.1 68.3 72.1 62.0 Oct 83.6 84.8 85.7 86.5 87.1 87.5 87.7 86.1 81.2 74.7 68.4 63.2 59.4 56.4 55.1 55.6 58.5 63.1 68.3 72.5 75.8 78.4 80.5 82.2 74.3 Nov 86.5 86.8 87.0 87.3 87.4 87.5 87.5 87.3 85.9 82.5 78.6 75.1 72.5 70.9 70.8 72.4 75.6 78.9 81.2 82.8 84.1 85.1 85.8 86.3 81.9 Dec 86.7 87.0 87.1 87.2 87.3 87.4 87.4 87.3 86.9 85.0 82.0 78.9 76.7 75.3 75.2 76.4 78.9 81.3 82.9 84.0 84.8 85.4 85.9 86.3 83.5 Values in Percent Eugene, OR. Daily Average Relative Humidity For 1982 to 2010 Latitude: 44.05 degrees Longitude: 123.07 degrees Altitude: 150 meters Year\Mth Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Yearly 1982 ---- ---- ---- ---- ---- ---- ---- 60.2 68.6 78.6 81.8 84.2 ---- 1983 82.6 79.9 75.8 66.7 66.0 65.8 65.5 62.3 62.4 75.3 81.5 88.7 72.7 1984 86.6 82.8 79.2 75.0 70.3 70.3 55.8 55.7 63.8 83.3 89.9 91.4 75.3 1985 94.0 87.2 79.6 68.2 63.5 63.6 59.1 62.2 52.6* 71.0 79.2 81.2 71.7 1986 85.0 83.0 72.5 68.5 66.8 60.3 60.5 54.1 71.2 78.1 82.5 83.4 72.1 1987 79.6 76.1 69.0 63.7 63.4 56.4 62.0 55.2 62.3 63.1 80.9 82.9 67.9 1988 83.4 77.1 67.4 70.2 65.4 58.9 49.1 50.9 54.4 73.7 80.0 81.2 67.6 1989 79.0 71.2 72.1 58.2 58.7 54.1 51.8 56.1 44.7 67.4 80.0 84.4 64.8 1990 81.5 78.0 70.7 69.0 66.3 64.3 56.4 62.5 67.7 76.3 80.6 78.7 71.0 1991 80.4 78.9 75.2 70.2 68.9 64.5 56.9 61.1 56.1 66.9 83.6 88.2 70.9 1992 78.5 79.7 72.7 71.4 57.3 59.6 58.2 52.1 62.4 75.8 83.6 84.0 69.6 1993 82.2 74.0 76.1 74.5 68.7 64.9 63.3 62.5 60.4 72.6 80.5 82.3 71.8 1994 82.3 76.1 68.3 68.1 62.7 61.3 50.3 55.8 63.0 69.2 82.0 79.5 68.2 1995 80.7 77.7 67.1 70.9 61.2 60.9 56.6 57.1 64.2 75.0 82.5 85.1 69.9 1996 82.7 72.3 66.8 66.1 64.0 57.9 54.1 55.3 66.3 79.5 86.1 84.3 69.6 1997 80.4 78.1 74.8 69.4 61.6 64.5 57.8 58.5 69.9 79.9 82.4 85.4 71.9 1998 81.5 74.7 74.5 66.5 75.5 65.1 59.2 54.0 59.9 76.7 79.7 78.0 70.4 1999 79.6 74.8 72.8 60.2 63.9 59.3 54.7 61.7 53.3 68.7 82.0 79.5 67.5 2000 84.5 82.0 70.7 67.9 65.6 57.7 57.7 56.6 62.4 72.1 76.2 81.6 69.5 2001 78.6 74.0 73.0 67.5 54.4 58.5 54.5 60.7 60.9 76.1 81.9 84.6 68.7 2002 83.1 75.0 71.6 68.1 62.5 60.6 52.4 52.4 59.1 71.0 77.8 82.6 68.0 2003 85.0 76.1 74.7 72.3 62.3 54.5 47.1 51.9 60.7 73.2 80.3 84.6 68.5 2004 85.2 79.7 68.6 64.0 64.4 60.1 52.6 58.0 70.9 78.8 83.3 85.7 70.9 2005 79.9 77.0 68.1 69.0 70.1 65.2 53.8 51.8 58.1 75.3 85.1 83.1 69.7 2006 83.0 68.3 69.4 66.5 60.6 60.7 53.1 52.9 58.2 69.6 81.3 82.6 67.2 2007 78.7 78.4 70.1 65.6 62.6 57.9 56.6 57.1 60.6 78.6 84.2 85.2 69.6 2008 82.5 79.3 75.0 69.0 63.4 60.5 50.1 59.8 60.2 75.0 84.6 84.1 70.3 2009 82.4 78.0 73.6 65.6 61.3 60.5 51.7 57.3 63.3 75.3 77.7 81.3 68.9 2010 82.6 78.6 74.9 69.8 68.3 67.6 55.7 58.9 72.9 78.7 84.4 83.2 72.9 Average 82.3 77.4 72.3 67.9 64.3 61.3 55.6 57.1 61.7 74.3 81.9 83.5 69.9 % SD 4 5 5 5 7 6 8 6 10 6 3 3 3 Values in average daily Percent * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.