Eugene, OR. Relative Humidity Eugene, OR. Hourly Average Relative Humidity For 1982 to 2018 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 86.8 87.1 87.5 87.7 87.8 87.8 87.9 87.9 87.5 85.4 82.3 78.9 76.2 74.4 73.6 74.1 76.5 79.6 81.9 83.5 84.8 85.5 86.1 86.5 83.2 Feb 84.3 85.0 85.5 85.9 86.3 86.5 86.7 86.6 84.8 81.0 76.2 71.7 68.6 66.4 65.3 65.6 67.4 70.6 74.3 77.3 79.5 81.1 82.5 83.6 78.5 Mar 81.9 82.9 83.6 84.3 85.0 85.4 85.6 84.1 80.0 74.3 68.6 64.3 60.8 58.5 57.4 57.5 59.2 62.3 66.6 70.6 73.8 76.4 78.7 80.6 73.4 Apr 79.0 80.8 82.2 83.3 84.0 84.5 83.5 79.6 73.4 67.0 61.8 57.6 54.6 52.6 51.5 51.6 53.2 55.9 59.9 64.6 68.3 71.4 74.1 76.7 68.8 May 75.8 78.3 80.2 81.8 82.9 82.8 79.8 74.3 68.0 62.3 57.6 54.1 51.3 49.1 47.7 47.7 48.8 50.9 54.5 59.2 63.7 67.0 70.1 73.1 65.0 Jun 73.0 75.6 77.8 79.7 81.2 80.5 76.9 71.4 65.8 60.2 55.4 51.4 48.2 45.7 43.9 43.3 44.3 46.6 50.0 54.9 59.9 63.8 66.8 69.9 61.9 Jul 68.3 71.4 74.2 76.7 78.6 78.4 74.6 68.8 62.6 56.5 50.7 45.7 41.5 38.1 35.6 34.2 34.6 36.6 40.5 46.3 52.3 57.1 61.1 64.7 56.2 Aug 69.5 72.7 75.5 78.0 79.8 81.0 78.3 72.2 64.9 58.2 51.9 46.4 41.8 38.0 35.2 34.0 34.7 37.3 41.8 47.8 53.6 58.4 62.5 66.2 57.5 Sep 75.5 78.1 80.2 81.9 83.3 84.3 83.6 78.5 70.6 62.8 56.1 50.4 45.8 42.1 39.8 39.4 40.8 44.1 49.4 55.2 60.2 64.9 69.1 72.8 62.9 Oct 84.4 85.5 86.4 87.2 87.7 88.2 88.3 86.7 82.0 75.7 69.6 64.4 60.5 57.5 56.3 56.7 59.4 63.9 69.1 73.4 76.7 79.4 81.5 83.1 75.2 Nov 87.1 87.5 87.7 88.0 88.0 88.0 88.2 88.0 86.5 83.1 79.2 75.7 73.0 71.3 71.1 72.7 75.7 79.1 81.5 83.3 84.6 85.7 86.3 86.8 82.4 Dec 87.5 87.8 87.8 88.0 88.1 88.2 88.2 88.0 87.6 85.8 82.8 79.8 77.6 76.2 75.9 77.1 79.6 82.1 83.7 84.8 85.6 86.2 86.8 87.2 84.3 Values in Percent Eugene, OR. Daily Average Relative Humidity For 1982 to 2018 Latitude: 44.05 degrees Longitude: 123.07 degrees Altitude: 150 meters 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 2011 83.4 76.6 77.2 69.5 67.1 64.0 61.5 57.8 60.4 79.6 82.8 86.5 72.2 2012 82.8 81.9 77.0 75.7 66.3 71.8 66.4 62.5 62.5 75.2 86.0 85.6 74.5 2013 90.9 83.0 76.7 69.4 67.0 65.2 55.6 65.4 77.8 83.1 85.3 88.5 75.6 2014 91.1 87.1 77.6 70.9 67.8 66.0 59.8 58.6 64.3 78.9 85.1 87.1 74.5 2015 88.8 80.5 75.2 73.5 70.6 57.2 54.0 55.9 66.5 77.0 84.3 85.5 72.4 2016 85.2 82.1 77.3 69.2 66.6 62.4 62.2 54.9 65.5 82.6 81.5 89.8 73.3 2017 83.7 84.0 80.8 73.7 68.1 64.3 55.9 57.2 65.9 78.3 84.1 89.3 73.7 2018 85.3 79.9 77.5 72.8 68.5 62.5 53.2 61.0 64.0 71.4 84.8 85.5 72.2 Average 83.2 78.4 73.4 68.8 65.0 61.9 56.3 57.5 62.6 75.2 82.4 84.3 70.7 % SD 4 5 5 5 6 7 8 6 10 6 3 4 4 Values in average daily Percent * Less than 15 days of data in month. Univ. of Oregon Solar Radiation Monitoring Lab.