Weather on August 11
Portland, OR
55 Years of Data
Avg High
82°F
Avg Low
59°F
Warmest
1977
86°F avg
Coldest
1988
61°F avg
About This Date
August 11th in Portland, OR typically brings warm summer weather, with average highs around 82°F and lows near 59°F. Over 55 years of records, the warmest August 11th was in 1977 (86°F average), while the coldest was 1988 (61°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 4% of August 11th dates historically, with the wettest August 11th recording 0.51" of rain. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for August 11th in Portland, OR? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 97° | 68° | 82° | — | — |
| 2024 | 78° | 61° | 69° | — | — |
| 2023 | 83° | 59° | 71° | — | — |
| 2022 | 85° | 60° | 72° | — | — |
| 2021 | 100° | 70° | 85° | — | — |
| 2020 | 79° | 56° | 67° | — | — |
| 2019 | 76° | 58° | 67° | 0.08" | — |
| 2018 | 74° | 62° | 68° | — | — |
| 2017 | 84° | 61° | 72° | — | — |
| 2016 | 86° | 60° | 73° | — | — |
| 2015 | 90° | 62° | 76° | — | — |
| 2014 | 97° | 69° | 83° | — | — |
| 2013 | 72° | 60° | 66° | — | — |
| 2012 | 84° | 58° | 71° | — | — |
| 2011 | 76° | 56° | 66° | — | — |
| 2010 | 80° | 57° | 69° | — | — |
| 2009 | 77° | 63° | 70° | 0.51" | — |
| 2008 | 83° | 62° | 72° | — | — |
| 2007 | 82° | 54° | 68° | — | — |
| 2006 | 73° | 56° | 64° | — | — |
| 2005 | 74° | 56° | 65° | — | — |
| 2004 | 91° | 63° | 77° | — | — |
| 2003 | 77° | 58° | 67° | — | — |
| 2002 | 83° | 55° | 69° | — | — |
| 2001 | 87° | 59° | 73° | — | — |
| 2000 | 73° | 56° | 64° | — | — |
| 1999 | 67° | 58° | 62° | — | — |
| 1998 | 86° | 64° | 75° | — | — |
| 1997 | 88° | 61° | 74° | — | — |
| 1996 | 76° | 58° | 67° | — | — |
| 1995 | 72° | 58° | 65° | — | — |
| 1994 | 84° | 58° | 71° | — | — |
| 1993 | 77° | 55° | 66° | — | — |
| 1992 | 102° | 68° | 85° | — | — |
| 1991 | 80° | 55° | 68° | — | — |
| 1990 | 101° | 67° | 84° | — | — |
| 1989 | 77° | 51° | 64° | — | — |
| 1988coldest | 66° | 56° | 61° | — | — |
| 1987 | 76° | 61° | 68° | — | — |
| 1986 | 76° | 59° | 67° | — | — |
| 1985 | 83° | 52° | 67° | — | — |
| 1984 | 80° | 57° | 69° | — | — |
| 1983 | 72° | 58° | 65° | — | — |
| 1982 | 73° | 58° | 65° | — | — |
| 1981 | 98° | 69° | 84° | — | — |
| 1980 | 82° | 59° | 71° | — | — |
| 1979 | 85° | 54° | 69° | — | — |
| 1978 | 76° | 60° | 68° | — | — |
| 1977warmest | 102° | 69° | 86° | — | — |
| 1976 | 83° | 59° | 71° | — | — |
| 1975 | 79° | 54° | 66° | — | — |
| 1974 | 73° | 53° | 63° | — | — |
| 1973 | 81° | 55° | 68° | — | — |
| 1972 | 78° | 56° | 67° | — | — |
| 1971 | 99° | 69° | 84° | — | — |
55 years of data from PORTLAND KGW-TV