Weather on September 15
Gresham, OR
55 Years of Data
Avg High
75°F
Avg Low
52°F
Warmest
2023
77°F avg
Coldest
1992
53°F avg
About This Date
September 15th in Gresham, OR typically brings pleasant fall weather, with average highs around 75°F and lows near 52°F. Over 51 years of records, the warmest September 15th was in 2023 (77°F average), while the coldest was 1992 (53°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 24% of September 15th dates historically, with the wettest September 15th recording 3.1" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Gresham, OR? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 45° | 61° | — | — |
| 2024 | 69° | 52° | 60° | — | — |
| 2023warmest | 95° | 59° | 77° | — | — |
| 2022 | 78° | 61° | 69° | — | — |
| 2021 | 71° | 54° | 62° | — | — |
| 2020 | 75° | 57° | 66° | — | — |
| 2019 | 65° | 59° | 62° | 1.8" | — |
| 2018 | 68° | 50° | 59° | — | — |
| 2017 | 79° | 47° | 63° | — | — |
| 2016 | 80° | 49° | 64° | — | — |
| 2015 | 65° | 47° | 56° | 0.05" | — |
| 2014 | 90° | 61° | 75° | — | — |
| 2013 | 69° | 62° | 66° | — | — |
| 2012 | 82° | 49° | 65° | — | — |
| 2011 | 67° | 55° | 61° | 0.05" | — |
| 2010 | 73° | 51° | 62° | 0.63" | — |
| 2009 | 83° | 55° | 69° | — | — |
| 2008 | 90° | 55° | 72° | — | — |
| 2007 | 70° | 55° | 62° | — | — |
| 2006 | 62° | 50° | 56° | 0.33" | — |
| 2005 | 68° | 51° | 60° | — | — |
| 2004 | 69° | 56° | 62° | 0.13" | — |
| 2003 | 66° | 44° | 55° | — | — |
| 2002 | 68° | 56° | 62° | — | — |
| 2001 | 84° | 63° | 73° | — | — |
| 2000 | 75° | 62° | 69° | — | — |
| 1999 | 73° | 55° | 64° | — | — |
| 1998 | 87° | 49° | 68° | — | — |
| 1997 | 63° | 53° | 58° | 0.56" | — |
| 1996 | 65° | 52° | 58° | 3.1" | — |
| 1993 | 72° | 56° | 64° | — | — |
| 1992coldest | 62° | 45° | 53° | 1.14" | — |
| 1991 | 78° | 45° | 61° | — | — |
| 1990 | 85° | 53° | 69° | 0.46" | — |
| 1989 | 84° | 36° | 60° | — | — |
| 1988 | 85° | 43° | 64° | — | — |
| 1987 | 71° | 47° | 59° | 0.61" | — |
| 1986 | 72° | 47° | 59° | — | — |
| 1983 | 74° | 51° | 62° | — | — |
| 1982 | 70° | 43° | 56° | — | — |
| 1981 | 89° | 50° | 70° | — | — |
| 1980 | 77° | 45° | 61° | — | — |
| 1979 | 90° | 51° | 70° | — | — |
| 1978 | 70° | 52° | 61° | — | — |
| 1977 | 68° | 53° | 61° | — | — |
| 1976 | 67° | 49° | 58° | 0.15" | — |
| 1975 | 82° | 57° | 70° | — | — |
| 1974 | — | 49° | — | — | — |
| 1973 | 70° | 51° | 60° | — | — |
| 1972 | 88° | 48° | 68° | — | — |
| 1971 | 77° | 42° | 60° | — | — |
51 years of data from PORTLAND TROUTDALE AP