Weather on August 22
Hillsboro, OR
55 Years of Data
Avg High
79°F
Avg Low
51°F
Warmest
2025
76°F avg
Coldest
1973
57°F avg
About This Date
August 22nd in Hillsboro, OR typically brings pleasant summer weather, with average highs around 79°F and lows near 51°F — a 28°F daily swing. Over 55 years of records, the warmest August 22nd was in 2025 (76°F average), while the coldest was 1973 (57°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 22nd dates historically, with the wettest August 22nd recording 2.01" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 22nd in Hillsboro, OR? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 99° | 54° | 76° | — | — |
| 2024 | 70° | 59° | 64° | 0.43" | — |
| 2023 | 76° | 48° | 62° | — | — |
| 2022 | 88° | 58° | 73° | — | — |
| 2021 | 69° | 49° | 59° | — | — |
| 2020 | 79° | 51° | 65° | — | — |
| 2019 | 75° | 46° | 61° | — | — |
| 2018 | 93° | 52° | 72° | — | — |
| 2017 | 88° | 55° | 71° | — | — |
| 2016 | 75° | 47° | 61° | — | — |
| 2015 | 85° | 47° | 66° | — | — |
| 2014 | 82° | 55° | 69° | — | — |
| 2013 | 84° | 52° | 68° | 0.03" | — |
| 2012 | 76° | 46° | 61° | — | — |
| 2011 | 80° | 55° | 68° | — | — |
| 2010 | 72° | 49° | 60° | — | — |
| 2009 | 79° | 54° | 66° | — | — |
| 2008 | 81° | 47° | 64° | — | — |
| 2007 | 77° | 54° | 65° | — | — |
| 2006 | 79° | 49° | 64° | — | — |
| 2005 | 79° | 50° | 64° | — | — |
| 2004 | 70° | 59° | 64° | 2.01" | — |
| 2003 | 74° | 54° | 64° | 0.05" | — |
| 2002 | 84° | 44° | 64° | — | — |
| 2001 | 68° | 53° | 61° | 0.51" | — |
| 2000 | 90° | 49° | 69° | — | — |
| 1999 | 89° | 47° | 68° | — | — |
| 1998 | 80° | 62° | 71° | — | — |
| 1997 | 87° | 55° | 71° | — | — |
| 1996 | 92° | 54° | 73° | — | — |
| 1995 | 83° | 53° | 68° | — | — |
| 1994 | 73° | 54° | 63° | — | — |
| 1993 | 77° | 53° | 65° | — | — |
| 1992 | 71° | 51° | 61° | — | — |
| 1991 | 91° | 55° | 73° | — | — |
| 1990 | 66° | 58° | 62° | 0.53" | — |
| 1989 | 74° | 56° | 65° | 0.13" | — |
| 1988 | 83° | 45° | 64° | — | — |
| 1987 | 80° | 46° | 63° | — | — |
| 1986 | 90° | 48° | 69° | — | — |
| 1985 | 73° | 43° | 58° | — | — |
| 1984 | 86° | 50° | 68° | — | — |
| 1983 | 82° | 49° | 65° | — | — |
| 1982 | 89° | 50° | 70° | — | — |
| 1981 | 78° | 46° | 62° | — | — |
| 1980 | 79° | 43° | 61° | — | — |
| 1979 | 79° | 55° | 67° | — | — |
| 1978 | 68° | 55° | 62° | 0.15" | — |
| 1977 | 76° | 56° | 66° | — | — |
| 1976 | 76° | 49° | 62° | — | — |
| 1975 | 68° | 47° | 57° | 1.02" | — |
| 1974 | 80° | 56° | 68° | — | — |
| 1973coldest | 74° | 40° | 57° | — | — |
| 1972 | 79° | 55° | 67° | — | — |
| 1971 | 72° | 55° | 63° | 0.69" | — |
55 years of data from HILLSBORO