Weather on September 20
Gresham, OR
55 Years of Data
Avg High
74°F
Avg Low
50°F
Warmest
1974
72°F avg
Coldest
1989
49°F avg
About This Date
September 20th in Gresham, OR typically brings pleasant fall weather, with average highs around 74°F and lows near 50°F. Over 51 years of records, the warmest September 20th was in 1974 (72°F average), while the coldest was 1989 (49°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 20th dates historically, with the wettest September 20th recording 2.69" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Gresham, OR? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 51° | 67° | — | — |
| 2024 | 73° | 51° | 62° | — | — |
| 2023 | 71° | 50° | 61° | 0.1" | — |
| 2022 | 87° | 53° | 70° | — | — |
| 2021 | 73° | 50° | 62° | — | — |
| 2020 | 77° | 57° | 67° | — | — |
| 2019 | 67° | 59° | 63° | 0.05" | — |
| 2018 | 72° | 48° | 60° | — | — |
| 2017 | 63° | 48° | 55° | 2.69" | — |
| 2016 | 72° | 51° | 61° | — | — |
| 2015 | 77° | 53° | 65° | — | — |
| 2014 | 92° | 52° | 72° | — | — |
| 2013 | 75° | 49° | 62° | — | — |
| 2012 | 62° | 51° | 57° | 0.03" | — |
| 2011 | 82° | 48° | 65° | — | — |
| 2010 | 67° | 54° | 60° | 0.08" | — |
| 2009 | 72° | 47° | 59° | — | — |
| 2008 | 64° | 55° | 60° | — | — |
| 2007 | 68° | 44° | 56° | — | — |
| 2006 | 62° | 47° | 54° | 0.89" | — |
| 2005 | 72° | 47° | 59° | — | — |
| 2004 | 65° | 50° | 57° | — | — |
| 2003 | 73° | 47° | 60° | — | — |
| 2002 | 76° | 46° | 61° | — | — |
| 2001 | 76° | 44° | 60° | — | — |
| 2000 | 73° | 52° | 62° | — | — |
| 1999 | 91° | 51° | 71° | — | — |
| 1998 | 74° | 51° | 62° | — | — |
| 1997 | 82° | 51° | 67° | — | — |
| 1996 | 68° | 44° | 56° | 0.15" | — |
| 1994 | 85° | 53° | 69° | — | — |
| 1993 | 66° | 46° | 56° | — | — |
| 1992 | 78° | 51° | 65° | — | — |
| 1991 | 88° | — | — | — | — |
| 1989coldest | 60° | 38° | 49° | — | — |
| 1988 | 66° | 47° | 56° | 0.71" | — |
| 1987 | 84° | 44° | 64° | — | — |
| 1986 | 75° | 52° | 63° | 0.97" | — |
| 1985 | 70° | 42° | 56° | — | — |
| 1984 | 66° | 58° | 62° | 0.56" | — |
| 1983 | 68° | 41° | 55° | — | — |
| 1982 | 86° | 49° | 67° | — | — |
| 1979 | 77° | 54° | 65° | — | — |
| 1978 | 70° | 47° | 58° | — | — |
| 1977 | 67° | 54° | 60° | 0.38" | — |
| 1976 | 85° | 54° | 69° | — | — |
| 1975 | 82° | 60° | 71° | — | — |
| 1974warmest | 90° | 55° | 72° | — | — |
| 1973 | 65° | 57° | 61° | 0.94" | — |
| 1972 | 62° | 51° | 57° | 0.84" | — |
| 1971 | 80° | 51° | 66° | — | — |
51 years of data from PORTLAND TROUTDALE AP