Weather on September 23
Portland, OR
55 Years of Data
Avg High
73°F
Avg Low
53°F
Warmest
1974
77°F avg
Coldest
1972
51°F avg
About This Date
September 23rd in Portland, OR typically brings pleasant fall weather, with average highs around 73°F and lows near 53°F. Over 55 years of records, the warmest September 23rd was in 1974 (77°F average), while the coldest was 1972 (51°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 23rd dates historically, with the wettest September 23rd recording 2.16" of rain. The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
Planning for September 23rd in Portland, OR? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 56° | 71° | — | — |
| 2024 | 78° | 59° | 69° | — | — |
| 2023 | 66° | 55° | 61° | 0.15" | — |
| 2022 | 73° | 50° | 62° | — | — |
| 2021 | 71° | 55° | 63° | — | — |
| 2020 | 69° | 58° | 63° | 1.78" | — |
| 2019 | 68° | 54° | 61° | — | — |
| 2018 | 67° | 50° | 58° | — | — |
| 2017 | 71° | 51° | 61° | — | — |
| 2016 | 61° | 53° | 57° | 0.03" | — |
| 2015 | 74° | 46° | 60° | — | — |
| 2014 | 67° | 59° | 63° | 0.33" | — |
| 2013 | 62° | 55° | 59° | 2.08" | — |
| 2012 | 70° | 50° | 60° | — | — |
| 2011 | 86° | 61° | 73° | — | — |
| 2010 | 61° | 51° | 56° | 0.15" | — |
| 2009 | 88° | 60° | 74° | — | — |
| 2008 | 71° | 45° | 58° | — | — |
| 2007 | 66° | 49° | 57° | — | — |
| 2006 | 80° | 56° | 68° | — | — |
| 2005 | 69° | 49° | 59° | — | — |
| 2004 | 73° | 54° | 63° | — | — |
| 2003 | 77° | 54° | 65° | — | — |
| 2002 | 85° | 57° | 71° | — | — |
| 2001 | 83° | 58° | 70° | — | — |
| 2000 | 73° | 42° | 58° | — | — |
| 1999 | 66° | 52° | 59° | 0.38" | — |
| 1998 | 79° | 54° | 66° | — | — |
| 1997 | 86° | 57° | 72° | — | — |
| 1996 | 69° | 47° | 58° | — | — |
| 1995 | 83° | 52° | 67° | — | — |
| 1994 | 85° | 57° | 71° | — | — |
| 1993 | 78° | 49° | 63° | — | — |
| 1992 | 68° | 60° | 64° | 0.99" | — |
| 1991 | 81° | 56° | 68° | — | — |
| 1990 | 75° | 58° | 66° | — | — |
| 1989 | 87° | 58° | 72° | — | — |
| 1988 | 67° | 48° | 57° | 0.3" | — |
| 1987 | 80° | 58° | 69° | — | — |
| 1986 | 57° | 51° | 54° | 2.16" | — |
| 1985 | 76° | 51° | 63° | — | — |
| 1984 | 63° | 45° | 54° | — | — |
| 1983 | 75° | 57° | 66° | — | — |
| 1982 | 85° | 54° | 69° | — | — |
| 1981 | 62° | 43° | 52° | 0.03" | — |
| 1980 | 72° | 59° | 65° | — | — |
| 1979 | 76° | 52° | 64° | — | — |
| 1978 | 76° | 59° | 67° | — | — |
| 1977 | 59° | 52° | 55° | 1.4" | — |
| 1976 | 71° | 54° | 62° | — | — |
| 1975 | 73° | 51° | 62° | — | — |
| 1974warmest | 93° | 60° | 77° | — | — |
| 1973 | 62° | 54° | 58° | 0.56" | — |
| 1972coldest | 56° | 47° | 51° | 0.89" | — |
| 1971 | 76° | 52° | 64° | — | — |
55 years of data from PORTLAND KGW-TV