Weather on September 5
Portland, OR
55 Years of Data
Avg High
77°F
Avg Low
56°F
Warmest
2017
80°F avg
Coldest
1971
57°F avg
About This Date
September 5th in Portland, OR typically brings pleasant fall weather, with average highs around 77°F and lows near 56°F. Over 55 years of records, the warmest September 5th was in 2017 (80°F average), while the coldest was 1971 (57°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 24% of September 5th dates historically, with the wettest September 5th recording 1.96" of rain. The last decade has been 6.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.1°F warmer on this date compared to 20-30 years ago.
Planning for September 5th in Portland, OR? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 62° | 69° | 0.03" | — |
| 2024 | 98° | 63° | 80° | — | — |
| 2023 | 70° | 51° | 60° | — | — |
| 2022 | 78° | 56° | 67° | — | — |
| 2021 | 83° | 60° | 71° | — | — |
| 2020 | 73° | 59° | 66° | — | — |
| 2019 | 87° | 62° | 75° | — | — |
| 2018 | 89° | 59° | 74° | — | — |
| 2017warmest | 90° | 70° | 80° | — | — |
| 2016 | 70° | 51° | 60° | — | — |
| 2015 | 65° | 50° | 57° | 0.2" | — |
| 2014 | 88° | 59° | 73° | — | — |
| 2013 | 69° | 59° | 64° | 1.65" | — |
| 2012 | 86° | 54° | 70° | — | — |
| 2011 | 86° | 58° | 72° | — | — |
| 2010 | 67° | 54° | 60° | — | — |
| 2009 | 67° | 55° | 61° | 1.96" | — |
| 2008 | 78° | 53° | 66° | — | — |
| 2007 | 78° | 58° | 68° | — | — |
| 2006 | 83° | 55° | 69° | — | — |
| 2005 | 75° | 53° | 64° | — | — |
| 2004 | 75° | 52° | 63° | — | — |
| 2003 | 91° | 62° | 77° | — | — |
| 2002 | 73° | 49° | 61° | — | — |
| 2001 | 68° | 48° | 58° | — | — |
| 2000 | 69° | 49° | 59° | — | — |
| 1999 | 80° | 55° | 68° | — | — |
| 1998 | 86° | 55° | 71° | — | — |
| 1997 | 74° | 53° | 63° | — | — |
| 1996 | 66° | 49° | 57° | 0.13" | — |
| 1995 | 71° | 59° | 65° | 0.2" | — |
| 1994 | 86° | 56° | 71° | — | — |
| 1993 | 75° | 58° | 66° | — | — |
| 1992 | 68° | 51° | 60° | 0.03" | — |
| 1991 | 90° | 64° | 77° | — | — |
| 1990 | 82° | 59° | 71° | — | — |
| 1989 | 72° | 50° | 61° | — | — |
| 1988 | 76° | 57° | 66° | — | — |
| 1987 | 91° | 61° | 76° | — | — |
| 1986 | 89° | 60° | 75° | — | — |
| 1985 | 68° | 59° | 64° | 0.05" | — |
| 1984 | 69° | 52° | 60° | 1.88" | — |
| 1983 | 73° | 50° | 62° | — | — |
| 1982 | 80° | 56° | 68° | — | — |
| 1981 | 78° | 52° | 65° | — | — |
| 1980 | 87° | 55° | 71° | — | — |
| 1979 | 67° | 59° | 63° | 0.71" | — |
| 1978 | 65° | 54° | 59° | 0.41" | — |
| 1977 | 74° | 57° | 65° | — | — |
| 1976 | 69° | 55° | 62° | 0.58" | — |
| 1975 | 92° | 60° | 76° | — | — |
| 1974 | 81° | 58° | 69° | — | — |
| 1973 | 85° | 62° | 73° | — | — |
| 1972 | 67° | 57° | 62° | — | — |
| 1971coldest | 63° | 52° | 57° | 0.38" | — |
55 years of data from PORTLAND KGW-TV