Weather on September 23
Portland, OR
55 Years of Data
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° | — | — |
Portland, OR Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Portland, OR Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Portland, OR Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Portland, OR
Portland, OR has no months that meet our "pleasant" threshold — every season has tradeoffs.