Weather on September 21
Gresham, OR
55 Years of Data
Avg High
75°F
Avg Low
51°F
Warmest
1974
81°F avg
Coldest
1993
53°F avg
About This Date
September 21st in Gresham, OR typically brings pleasant fall weather, with average highs around 75°F and lows near 51°F. Over 53 years of records, the warmest September 21st was in 1974 (81°F average), while the coldest was 1993 (53°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 28% of September 21st dates historically, with the wettest September 21st recording 1.37" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 21st in Gresham, OR? Great weather for outdoor activities.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 56° | 64° | 0.91" | — |
| 2024 | 79° | 46° | 62° | — | — |
| 2023 | 76° | 44° | 60° | — | — |
| 2022 | 77° | 50° | 64° | — | — |
| 2021 | 83° | 55° | 69° | — | — |
| 2020 | 76° | 51° | 63° | — | — |
| 2019 | 73° | 55° | 64° | — | — |
| 2018 | 75° | 46° | 61° | 0.15" | — |
| 2017 | 64° | 49° | 56° | 0.03" | — |
| 2016 | 74° | 49° | 61° | — | — |
| 2015 | 70° | 50° | 60° | 0.08" | — |
| 2014 | 88° | 63° | 75° | — | — |
| 2013 | 68° | 57° | 63° | 0.89" | — |
| 2012 | 65° | 57° | 61° | — | — |
| 2011 | 86° | 52° | 69° | — | — |
| 2010 | 69° | 50° | 60° | — | — |
| 2009 | 80° | 49° | 64° | — | — |
| 2008 | 62° | 54° | 58° | 1.17" | — |
| 2007 | 74° | 43° | 58° | — | — |
| 2006 | 62° | 50° | 56° | 0.05" | — |
| 2005 | 75° | 40° | 57° | — | — |
| 2004 | 68° | 45° | 56° | — | — |
| 2003 | 80° | 45° | 62° | 0.03" | — |
| 2002 | 80° | 41° | 61° | — | — |
| 2001 | 77° | 46° | 62° | — | — |
| 2000 | 70° | 57° | 63° | 0.56" | — |
| 1999 | 89° | 47° | 68° | — | — |
| 1998 | 82° | 46° | 64° | — | — |
| 1997 | 86° | 50° | 68° | — | — |
| 1996 | — | 47° | — | — | — |
| 1994 | 87° | 55° | 71° | — | — |
| 1993coldest | 65° | 41° | 53° | — | — |
| 1992 | 76° | 57° | 66° | — | — |
| 1991 | 74° | 48° | 61° | — | — |
| 1990 | 87° | 53° | 70° | — | — |
| 1989 | 87° | 55° | 71° | — | — |
| 1988 | 68° | 40° | 54° | 0.08" | — |
| 1987 | 86° | 47° | 66° | — | — |
| 1986 | 65° | 52° | 58° | 0.05" | — |
| 1985 | 75° | 46° | 61° | — | — |
| 1984 | 71° | 51° | 61° | — | — |
| 1983 | 70° | 53° | 61° | — | — |
| 1982 | 62° | 49° | 55° | — | — |
| 1981 | — | 51° | — | 0.89" | — |
| 1979 | 79° | 55° | 67° | — | — |
| 1978 | 68° | 51° | 60° | 0.03" | — |
| 1977 | 68° | 52° | 60° | 0.84" | — |
| 1976 | 87° | 57° | 72° | — | — |
| 1975 | 83° | 60° | 71° | — | — |
| 1974warmest | 91° | 71° | 81° | — | — |
| 1973 | 68° | 56° | 62° | 1.37" | — |
| 1972 | 65° | 55° | 60° | — | — |
| 1971 | 74° | 42° | 58° | — | — |
53 years of data from PORTLAND TROUTDALE AP