Weather on September 5
Hillsboro, OR
55 Years of Data
Avg High
79°F
Avg Low
50°F
Warmest
2024
79°F avg
Coldest
2000
54°F avg
About This Date
September 5th in Hillsboro, OR typically brings pleasant fall weather, with average highs around 79°F and lows near 50°F — a 29°F daily swing. Over 55 years of records, the warmest September 5th was in 2024 (79°F average), while the coldest was 2000 (54°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 16% of September 5th dates historically, with the wettest September 5th recording 1.96" of rain. The last decade has been 7.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.3°F warmer on this date compared to 20-30 years ago.
Planning for September 5th in Hillsboro, OR? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 62° | 72° | — | — |
| 2024warmest | 100° | 57° | 79° | — | — |
| 2023 | 72° | 47° | 59° | — | — |
| 2022 | 82° | 47° | 64° | — | — |
| 2021 | 84° | 53° | 69° | — | — |
| 2020 | 76° | 57° | 66° | — | — |
| 2019 | 91° | 53° | 72° | — | — |
| 2018 | 92° | 51° | 71° | — | — |
| 2017 | 92° | 61° | 76° | — | — |
| 2016 | 72° | 40° | 56° | — | — |
| 2015 | 69° | 42° | 56° | 0.23" | — |
| 2014 | 89° | 48° | 69° | — | — |
| 2013 | 67° | 60° | 63° | 1.96" | — |
| 2012 | 89° | 50° | 70° | — | — |
| 2011 | 89° | 48° | 69° | — | — |
| 2010 | 69° | 43° | 56° | — | — |
| 2009 | 68° | 55° | 62° | 0.89" | — |
| 2008 | 79° | 47° | 63° | — | — |
| 2007 | 79° | 54° | 66° | — | — |
| 2006 | 90° | 50° | 70° | — | — |
| 2005 | 76° | 43° | 59° | — | — |
| 2004 | 76° | 49° | 62° | — | — |
| 2003 | 93° | 53° | 73° | — | — |
| 2002 | 71° | 40° | 55° | — | — |
| 2001 | 71° | 46° | 59° | — | — |
| 2000coldest | 69° | 40° | 54° | — | — |
| 1999 | 75° | 47° | 61° | — | — |
| 1998 | 89° | 52° | 70° | — | — |
| 1997 | 75° | 49° | 62° | — | — |
| 1996 | 67° | 46° | 56° | 0.08" | — |
| 1995 | 70° | 52° | 61° | 0.18" | — |
| 1994 | 87° | 48° | 68° | — | — |
| 1993 | 78° | 53° | 66° | — | — |
| 1992 | 67° | 47° | 57° | — | — |
| 1991 | 93° | 55° | 74° | — | — |
| 1990 | 93° | 53° | 73° | — | — |
| 1989 | 81° | 47° | 64° | — | — |
| 1988 | 86° | 54° | 70° | — | — |
| 1987 | 86° | 50° | 68° | — | — |
| 1986 | 93° | 53° | 73° | — | — |
| 1985 | 75° | 55° | 65° | — | — |
| 1984 | 82° | 52° | 67° | — | — |
| 1983 | 70° | 46° | 58° | — | — |
| 1982 | 75° | 50° | 63° | — | — |
| 1981 | 74° | 45° | 59° | — | — |
| 1980 | 83° | 46° | 64° | — | — |
| 1979 | 74° | 54° | 64° | 0.38" | — |
| 1978 | 66° | 54° | 60° | 0.08" | — |
| 1977 | 75° | 56° | 65° | — | — |
| 1976 | 69° | 54° | 61° | 0.41" | — |
| 1975 | 93° | 47° | 70° | — | — |
| 1974 | 80° | 48° | 64° | — | — |
| 1973 | 86° | 51° | 69° | — | — |
| 1972 | 70° | 57° | 63° | — | — |
| 1971 | 70° | 55° | 62° | 1.07" | — |
55 years of data from HILLSBORO