Weather on October 15
Hillsboro, OR
55 Years of Data
Avg High
65°F
Avg Low
41°F
Warmest
2022
65°F avg
Coldest
2008
42°F avg
About This Date
October 15th in Hillsboro, OR typically brings mild fall weather, with average highs around 65°F and lows near 41°F. Over 55 years of records, the warmest October 15th was in 2022 (65°F average), while the coldest was 2008 (42°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 38% of October 15th dates historically, with the wettest October 15th recording 1.27" of rain. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for October 15th in Hillsboro, OR? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 35° | 51° | — | — |
| 2024 | 66° | 54° | 60° | 0.43" | — |
| 2023 | 66° | 50° | 58° | — | — |
| 2022warmest | 86° | 44° | 65° | — | — |
| 2021 | 61° | 43° | 52° | — | — |
| 2020 | 65° | 36° | 50° | — | — |
| 2019 | 60° | 36° | 48° | — | — |
| 2018 | 76° | 35° | 55° | — | — |
| 2017 | 69° | 33° | 51° | — | — |
| 2016 | 61° | 52° | 56° | 1.19" | — |
| 2015 | 79° | 43° | 61° | — | — |
| 2014 | 59° | 52° | 55° | 1.07" | — |
| 2013 | 68° | 34° | 51° | — | — |
| 2012 | 64° | 57° | 61° | 0.89" | — |
| 2011 | 62° | 41° | 52° | — | — |
| 2010 | 60° | 35° | 48° | — | — |
| 2009 | 61° | 48° | 54° | — | — |
| 2008coldest | 55° | 29° | 42° | 0.08" | — |
| 2007 | 58° | 46° | 52° | 0.48" | — |
| 2006 | 59° | 50° | 55° | 0.94" | — |
| 2005 | 62° | 54° | 58° | 0.13" | — |
| 2004 | 64° | 48° | 56° | — | — |
| 2003 | 59° | 44° | 52° | 0.79" | — |
| 2002 | 74° | 37° | 55° | — | — |
| 2001 | 61° | 39° | 50° | — | — |
| 2000 | 57° | 33° | 45° | 0.03" | — |
| 1999 | 59° | 28° | 44° | — | — |
| 1998 | 62° | 39° | 51° | 0.05" | — |
| 1997 | 75° | 45° | 60° | — | — |
| 1996 | 57° | 37° | 47° | 0.33" | — |
| 1995 | 69° | 45° | 57° | 0.2" | — |
| 1994 | 59° | 33° | 46° | — | — |
| 1993 | 60° | 53° | 57° | 0.51" | — |
| 1992 | 62° | 31° | 46° | — | — |
| 1991 | 83° | 42° | 62° | — | — |
| 1990 | 54° | 47° | 50° | 0.43" | — |
| 1989 | 61° | 34° | 47° | — | — |
| 1988 | 64° | 57° | 61° | — | — |
| 1987 | 64° | 34° | 49° | — | — |
| 1986 | 71° | 34° | 52° | — | — |
| 1985 | 66° | 42° | 54° | — | — |
| 1984 | 52° | 34° | 43° | 0.43" | — |
| 1983 | 64° | 37° | 51° | 0.03" | — |
| 1982 | 76° | 41° | 58° | — | — |
| 1981 | 68° | 33° | 51° | — | — |
| 1980 | 60° | 37° | 49° | 0.41" | — |
| 1979 | 62° | 54° | 58° | 0.38" | — |
| 1978 | 64° | 44° | 54° | — | — |
| 1977 | 70° | 43° | 56° | — | — |
| 1976 | 69° | 40° | 54° | — | — |
| 1975 | 64° | 49° | 56° | 1.27" | — |
| 1974 | 78° | 35° | 57° | — | — |
| 1973 | 65° | 40° | 52° | — | — |
| 1972 | 70° | 37° | 53° | — | — |
| 1971 | 60° | 42° | 51° | 0.84" | — |
55 years of data from HILLSBORO