Weather on June 21
Hillsboro, OR
55 Years of Data
Avg High
75°F
Avg Low
51°F
Warmest
2021
77°F avg
Coldest
1991
51°F avg
About This Date
June 21st in Hillsboro, OR typically brings pleasant summer weather, with average highs around 75°F and lows near 51°F. Over 55 years of records, the warmest June 21st was in 2021 (77°F average), while the coldest was 1991 (51°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 16% of June 21st dates historically, with the wettest June 21st recording 4.19" 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 June 21st in Hillsboro, OR? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 57° | 47° | 52° | 1.09" | — |
| 2024 | 91° | 55° | 73° | — | — |
| 2023 | 77° | 43° | 60° | — | — |
| 2022 | 82° | 49° | 65° | — | — |
| 2021warmest | 95° | 59° | 77° | — | — |
| 2020 | 76° | 54° | 65° | — | — |
| 2019 | 71° | 53° | 62° | — | — |
| 2018 | 72° | 57° | 64° | 0.05" | — |
| 2017 | 76° | 46° | 61° | — | — |
| 2016 | 75° | 52° | 63° | — | — |
| 2015 | 83° | 55° | 69° | — | — |
| 2014 | 76° | 45° | 60° | — | — |
| 2013 | 71° | 53° | 62° | — | — |
| 2012 | 81° | 52° | 66° | — | — |
| 2011 | 83° | 48° | 65° | — | — |
| 2010 | 66° | 50° | 58° | — | — |
| 2009 | 67° | 44° | 55° | — | — |
| 2008 | 82° | 51° | 67° | — | — |
| 2007 | 76° | 49° | 62° | — | — |
| 2006 | 72° | 46° | 59° | — | — |
| 2005 | 72° | 56° | 64° | — | — |
| 2004 | 91° | 51° | 71° | — | — |
| 2003 | 63° | 44° | 53° | 0.1" | — |
| 2002 | 86° | 50° | 68° | — | — |
| 2001 | 84° | 53° | 69° | — | — |
| 2000 | 78° | 50° | 64° | — | — |
| 1999 | 68° | 56° | 62° | — | — |
| 1998 | 89° | 58° | 73° | — | — |
| 1997 | 64° | 52° | 58° | 0.46" | — |
| 1996 | 69° | 52° | 60° | — | — |
| 1995 | 67° | 50° | 58° | — | — |
| 1994 | 84° | 51° | 68° | — | — |
| 1993 | 78° | 52° | 65° | — | — |
| 1992 | 86° | 58° | 72° | — | — |
| 1991coldest | 53° | 49° | 51° | 2.26" | — |
| 1990 | 81° | 54° | 67° | — | — |
| 1989 | 68° | 44° | 56° | — | — |
| 1988 | 78° | 52° | 65° | — | — |
| 1987 | 64° | 51° | 58° | 0.3" | — |
| 1986 | 71° | 51° | 61° | — | — |
| 1985 | 79° | 47° | 63° | — | — |
| 1984 | 59° | 52° | 55° | 4.19" | — |
| 1983 | 67° | 44° | 55° | 0.05" | — |
| 1982 | 87° | 58° | 72° | — | — |
| 1981 | 67° | 52° | 59° | — | — |
| 1980 | 70° | 52° | 61° | — | — |
| 1979 | 72° | 54° | 63° | — | — |
| 1978 | 69° | 55° | 62° | — | — |
| 1977 | 75° | 48° | 62° | — | — |
| 1976 | 70° | 47° | 58° | — | — |
| 1975 | 65° | 53° | 59° | 0.23" | — |
| 1974 | 84° | 48° | 66° | — | — |
| 1973 | 94° | 53° | 73° | — | — |
| 1972 | 67° | 52° | 59° | — | — |
| 1971 | 87° | 46° | 67° | — | — |
55 years of data from HILLSBORO