Weather on August 17
Hillsboro, OR
55 Years of Data
Avg High
81°F
Avg Low
53°F
Warmest
1977
82°F avg
Coldest
1973
55°F avg
About This Date
August 17th in Hillsboro, OR typically brings warm summer weather, with average highs around 81°F and lows near 53°F — a 28°F daily swing. Over 55 years of records, the warmest August 17th was in 1977 (82°F average), while the coldest was 1973 (55°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 13% of August 17th dates historically, with the wettest August 17th recording 1.27" of rain. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for August 17th in Hillsboro, OR? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 61° | 69° | — | — |
| 2024 | 84° | 53° | 69° | 1.27" | — |
| 2023 | 93° | 63° | 78° | — | — |
| 2022 | 101° | 60° | 80° | — | — |
| 2021 | 72° | 53° | 62° | — | — |
| 2020 | 94° | 59° | 76° | — | — |
| 2019 | 72° | 56° | 64° | — | — |
| 2018 | 83° | 44° | 63° | — | — |
| 2017 | 80° | 55° | 68° | — | — |
| 2016 | 85° | 52° | 68° | — | — |
| 2015 | 90° | 53° | 71° | — | — |
| 2014 | 88° | 59° | 73° | — | — |
| 2013 | 84° | 56° | 70° | — | — |
| 2012 | 99° | 59° | 79° | — | — |
| 2011 | 84° | 47° | 65° | — | — |
| 2010 | 93° | 56° | 74° | — | — |
| 2009 | 89° | 51° | 70° | — | — |
| 2008 | 85° | 67° | 76° | — | — |
| 2007 | 77° | 47° | 62° | — | — |
| 2006 | 79° | 49° | 64° | — | — |
| 2005 | 77° | 53° | 65° | — | — |
| 2004 | 88° | 55° | 71° | — | — |
| 2003 | 86° | 55° | 71° | — | — |
| 2002 | 87° | 49° | 68° | — | — |
| 2001 | 69° | 51° | 60° | — | — |
| 2000 | 77° | 42° | 60° | — | — |
| 1999 | 90° | 54° | 72° | — | — |
| 1998 | 76° | 51° | 63° | — | — |
| 1997 | 86° | 63° | 74° | — | — |
| 1996 | 72° | 49° | 60° | — | — |
| 1995 | 70° | 46° | 58° | 0.28" | — |
| 1994 | 82° | 51° | 67° | — | — |
| 1993 | 72° | 51° | 61° | — | — |
| 1992 | 88° | 54° | 71° | — | — |
| 1991 | 81° | 59° | 70° | — | — |
| 1990 | 78° | 54° | 66° | 0.13" | — |
| 1989 | 70° | 50° | 60° | — | — |
| 1988 | 68° | 50° | 59° | — | — |
| 1987 | 72° | 44° | 58° | — | — |
| 1986 | 85° | 48° | 66° | — | — |
| 1985 | 87° | 52° | 69° | — | — |
| 1984 | 84° | 53° | 69° | — | — |
| 1983 | 79° | 47° | 63° | — | — |
| 1982 | 79° | 50° | 64° | — | — |
| 1981 | 87° | 58° | 72° | — | — |
| 1980 | 76° | 49° | 62° | — | — |
| 1979 | 78° | 53° | 66° | 0.18" | — |
| 1978 | 74° | 47° | 60° | — | — |
| 1977warmest | 106° | 58° | 82° | — | — |
| 1976 | 74° | 52° | 63° | 0.58" | — |
| 1975 | 66° | 58° | 62° | 0.46" | — |
| 1974 | 74° | 54° | 64° | — | — |
| 1973coldest | 71° | 40° | 55° | — | — |
| 1972 | 69° | 55° | 62° | 0.48" | — |
| 1971 | 83° | 49° | 66° | — | — |
55 years of data from HILLSBORO