Weather on August 20
Gresham, OR
55 Years of Data
Avg High
81°F
Avg Low
56°F
Warmest
2016
82°F avg
Coldest
1974
60°F avg
About This Date
August 20th in Gresham, OR typically brings warm summer weather, with average highs around 81°F and lows near 56°F — a 25°F daily swing. Over 52 years of records, the warmest August 20th was in 2016 (82°F average), while the coldest was 1974 (60°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 19% of August 20th dates historically, with the wettest August 20th recording 0.89" of rain. The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Gresham, OR? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 60° | 71° | — | — |
| 2024 | 81° | 57° | 69° | — | — |
| 2023 | 88° | 54° | 71° | — | — |
| 2022 | 80° | 66° | 73° | — | — |
| 2021 | 73° | 60° | 67° | 0.03" | — |
| 2020 | 86° | 60° | 73° | — | — |
| 2019 | 87° | 54° | 70° | — | — |
| 2018 | 82° | 58° | 70° | — | — |
| 2017 | 81° | 53° | 67° | — | — |
| 2016warmest | 101° | 63° | 82° | — | — |
| 2015 | 81° | 58° | 69° | — | — |
| 2014 | 78° | 60° | 69° | — | — |
| 2013 | 84° | 57° | 71° | — | — |
| 2012 | 79° | 57° | 68° | — | — |
| 2011 | 97° | 53° | 75° | — | — |
| 2010 | 75° | 46° | 61° | — | — |
| 2009 | 86° | 60° | 73° | — | — |
| 2008 | 69° | 60° | 65° | 0.56" | — |
| 2007 | 67° | 60° | 63° | 0.81" | — |
| 2006 | 90° | 52° | 71° | — | — |
| 2005 | 87° | 56° | 71° | — | — |
| 2004 | 89° | 58° | 73° | — | — |
| 2003 | 88° | 48° | 68° | — | — |
| 2002 | 75° | 57° | 66° | — | — |
| 2001 | 78° | 51° | 65° | — | — |
| 2000 | 77° | 46° | 62° | 0.03" | — |
| 1999 | 83° | 54° | 68° | — | — |
| 1998 | 83° | 54° | 68° | — | — |
| 1997 | 82° | 53° | 68° | — | — |
| 1996 | 81° | 58° | 69° | — | — |
| 1995 | 86° | 54° | 70° | — | — |
| 1994 | 81° | 59° | 70° | — | — |
| 1993 | 81° | 64° | 72° | 0.13" | — |
| 1992 | 87° | 50° | 69° | — | — |
| 1991 | 90° | 62° | 76° | — | — |
| 1990 | 82° | 57° | 70° | 0.51" | — |
| 1988 | 82° | 46° | 64° | — | — |
| 1987 | 86° | 48° | 67° | — | — |
| 1986 | 83° | 51° | 67° | — | — |
| 1985 | 68° | 53° | 61° | — | — |
| 1982 | 85° | 57° | 71° | — | — |
| 1981 | 69° | 59° | 64° | — | — |
| 1980 | 80° | 53° | 67° | — | — |
| 1979 | 68° | 55° | 62° | 0.89" | — |
| 1978 | 68° | 57° | 63° | 0.69" | — |
| 1977 | 80° | 59° | 70° | — | — |
| 1976 | 71° | 54° | 62° | 0.13" | — |
| 1975 | 66° | 55° | 61° | — | — |
| 1974coldest | 64° | 56° | 60° | 0.28" | — |
| 1973 | 82° | 46° | 64° | — | — |
| 1972 | 85° | 56° | 70° | — | — |
| 1971 | 88° | 60° | 74° | — | — |
52 years of data from PORTLAND TROUTDALE AP