Weather on August 18
Gresham, OR
55 Years of Data
Avg High
82°F
Avg Low
55°F
Warmest
1977
84°F avg
Coldest
1972
59°F avg
About This Date
August 18th in Gresham, OR typically brings warm summer weather, with average highs around 82°F and lows near 55°F — a 27°F daily swing. Over 53 years of records, the warmest August 18th was in 1977 (84°F average), while the coldest was 1972 (59°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 9% of August 18th dates historically, with the wettest August 18th recording 1.42" of rain. The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Gresham, OR? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 61° | 70° | — | — |
| 2024 | 82° | 59° | 71° | — | — |
| 2023 | 84° | 60° | 72° | — | — |
| 2022 | 85° | 70° | 77° | — | — |
| 2021 | 81° | 56° | 68° | — | — |
| 2020 | 86° | 64° | 75° | — | — |
| 2019 | 78° | 55° | 67° | — | — |
| 2018 | 86° | 52° | 69° | — | — |
| 2017 | 83° | 56° | 69° | — | — |
| 2016 | 101° | 57° | 79° | — | — |
| 2015 | 97° | 54° | 75° | — | — |
| 2014 | 92° | 59° | 75° | — | — |
| 2013 | 84° | 64° | 74° | — | — |
| 2012 | 78° | 61° | 69° | 0.03" | — |
| 2011 | 78° | 51° | 65° | — | — |
| 2010 | 76° | 57° | 66° | — | — |
| 2009 | 92° | 57° | 74° | — | — |
| 2008 | 68° | 62° | 65° | 0.36" | — |
| 2007 | 76° | 54° | 65° | — | — |
| 2006 | 92° | 49° | 70° | — | — |
| 2005 | 85° | 59° | 72° | — | — |
| 2004 | 87° | 64° | 76° | — | — |
| 2003 | 89° | 57° | 73° | — | — |
| 2002 | 83° | 56° | 69° | — | — |
| 2001 | 73° | 57° | 65° | — | — |
| 2000 | 67° | 52° | 59° | 0.28" | — |
| 1999 | 71° | 62° | 67° | — | — |
| 1998 | 74° | 49° | 61° | — | — |
| 1997 | 93° | 54° | 73° | — | — |
| 1996 | 72° | 50° | 61° | — | — |
| 1995 | 69° | 50° | 60° | 0.05" | — |
| 1994 | 84° | 55° | 70° | — | — |
| 1993 | 82° | 55° | 69° | — | — |
| 1992 | 94° | 55° | 74° | — | — |
| 1991 | 90° | 61° | 75° | — | — |
| 1990 | 81° | 56° | 68° | — | — |
| 1989 | 84° | 42° | 63° | — | — |
| 1988 | 72° | 46° | 59° | — | — |
| 1987 | 82° | 48° | 65° | — | — |
| 1986 | 90° | 46° | 68° | — | — |
| 1983 | 83° | 57° | 70° | — | — |
| 1982 | 84° | 53° | 69° | — | — |
| 1981 | 93° | 55° | 74° | — | — |
| 1980 | 71° | 56° | 63° | — | — |
| 1979 | 78° | 55° | 67° | — | — |
| 1978 | 74° | 56° | 65° | — | — |
| 1977warmest | 108° | 60° | 84° | — | — |
| 1976 | 76° | 48° | 62° | — | — |
| 1975 | 67° | 59° | 63° | 1.42" | — |
| 1974 | 72° | 56° | 64° | — | — |
| 1973 | 75° | 44° | 60° | — | — |
| 1972coldest | 72° | 47° | 59° | — | — |
| 1971 | 84° | 53° | 69° | — | — |
53 years of data from PORTLAND TROUTDALE AP