Weather on May 9
Hillsboro, OR
55 Years of Data
Avg High
67°F
Avg Low
42°F
Warmest
1987
72°F avg
Coldest
2022
43°F avg
About This Date
May 9th in Hillsboro, OR typically brings mild spring weather, with average highs around 67°F and lows near 42°F — a 25°F daily swing. Over 55 years of records, the warmest May 9th was in 1987 (72°F average), while the coldest was 2022 (43°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 33% of May 9th dates historically, with the wettest May 9th recording 2.08" of rain. The last decade has been 6.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.2°F warmer on this date compared to 20-30 years ago.
Planning for May 9th in Hillsboro, OR? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 37° | 56° | — | — |
| 2024 | 81° | 42° | 61° | — | — |
| 2023 | 66° | 41° | 54° | — | — |
| 2022coldest | 53° | 33° | 43° | 0.08" | — |
| 2021 | 63° | 48° | 55° | — | — |
| 2020 | 86° | 58° | 72° | — | — |
| 2019 | 84° | 49° | 66° | — | — |
| 2018 | 68° | 52° | 60° | — | — |
| 2017 | 75° | 42° | 59° | — | — |
| 2016 | 70° | 40° | 55° | — | — |
| 2015 | 82° | 42° | 62° | — | — |
| 2014 | 57° | 46° | 52° | 0.56" | — |
| 2013 | 79° | 44° | 61° | — | — |
| 2012 | 60° | 36° | 48° | — | — |
| 2011 | 59° | 44° | 52° | — | — |
| 2010 | 69° | 37° | 53° | 0.08" | — |
| 2009 | 69° | 37° | 53° | — | — |
| 2008 | 61° | 34° | 47° | — | — |
| 2007 | 69° | 35° | 52° | — | — |
| 2006 | 67° | 32° | 49° | — | — |
| 2005 | 54° | 48° | 51° | 2.08" | — |
| 2004 | 65° | 41° | 53° | 0.03" | — |
| 2003 | 58° | 43° | 50° | — | — |
| 2002 | 64° | 35° | 50° | — | — |
| 2001 | 66° | 32° | 49° | — | — |
| 2000 | 60° | 46° | 53° | 0.79" | — |
| 1999 | 56° | 39° | 47° | 0.15" | — |
| 1998 | 56° | 47° | 51° | 0.03" | — |
| 1997 | 78° | 48° | 63° | — | — |
| 1996 | 61° | 43° | 52° | — | — |
| 1995 | 58° | 46° | 52° | 0.05" | — |
| 1994 | 75° | 48° | 62° | — | — |
| 1993 | 62° | 39° | 51° | 0.08" | — |
| 1992 | 58° | 44° | 51° | — | — |
| 1991 | 56° | 35° | 45° | 0.15" | — |
| 1990 | 67° | 41° | 54° | — | — |
| 1989 | 75° | 48° | 62° | — | — |
| 1988 | 63° | 42° | 52° | — | — |
| 1987warmest | 92° | 53° | 72° | — | — |
| 1986 | 65° | 43° | 54° | — | — |
| 1985 | 58° | 35° | 46° | — | — |
| 1984 | 67° | 41° | 54° | 0.1" | — |
| 1983 | 54° | 41° | 47° | 0.18" | — |
| 1982 | 57° | 41° | 49° | 0.05" | — |
| 1981 | 64° | 45° | 54° | — | — |
| 1980 | 59° | 47° | 53° | 0.76" | — |
| 1979 | 63° | 37° | 50° | — | — |
| 1978 | 64° | 51° | 58° | 0.08" | — |
| 1977 | 76° | 38° | 57° | — | — |
| 1976 | 84° | 44° | 64° | — | — |
| 1975 | 78° | 46° | 62° | — | — |
| 1974 | 59° | 41° | 50° | 0.15" | — |
| 1973 | 62° | 48° | 55° | 0.15" | — |
| 1972 | 64° | 40° | 52° | — | — |
| 1971 | 66° | 40° | 53° | — | — |
55 years of data from HILLSBORO