Weather on April 15
Hillsboro, OR
55 Years of Data
Avg High
61°F
Avg Low
40°F
Warmest
1984
64°F avg
Coldest
2008
40°F avg
About This Date
April 15th in Hillsboro, OR typically brings mild spring weather, with average highs around 61°F and lows near 40°F. Over 55 years of records, the warmest April 15th was in 1984 (64°F average), while the coldest was 2008 (40°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 49% of April 15th dates historically, with the wettest April 15th recording 1.45" of rain. The last decade has been 3.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.4°F cooler on this date compared to 20-30 years ago.
Planning for April 15th in Hillsboro, OR? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 40° | 57° | — | — |
| 2024 | 57° | 42° | 50° | — | — |
| 2023 | 59° | 37° | 48° | — | — |
| 2022 | 53° | 31° | 42° | — | — |
| 2021 | 75° | 36° | 55° | — | — |
| 2020 | 67° | 44° | 55° | — | — |
| 2019 | 52° | 35° | 43° | 0.38" | — |
| 2018 | 49° | 42° | 45° | 1.17" | — |
| 2017 | 59° | 33° | 46° | — | — |
| 2016 | 61° | 34° | 47° | — | — |
| 2015 | 59° | 31° | 45° | — | — |
| 2014 | 60° | 45° | 52° | 0.03" | — |
| 2013 | 57° | 34° | 45° | 0.08" | — |
| 2012 | 63° | 39° | 51° | 0.33" | — |
| 2011 | 53° | 42° | 48° | 1.42" | — |
| 2010 | 61° | 43° | 52° | 0.3" | — |
| 2009 | 55° | 30° | 43° | — | — |
| 2008coldest | 49° | 30° | 40° | 0.15" | — |
| 2007 | 58° | 32° | 45° | — | — |
| 2006 | 47° | 38° | 42° | 1.02" | — |
| 2005 | 54° | 35° | 44° | 0.69" | — |
| 2004 | 53° | 43° | 48° | 0.66" | — |
| 2003 | 56° | 43° | 49° | — | — |
| 2002 | 56° | 39° | 47° | 0.03" | — |
| 2001 | 65° | 30° | 47° | — | — |
| 2000 | 66° | 54° | 60° | — | — |
| 1999 | 75° | 44° | 60° | — | — |
| 1998 | 64° | 39° | 52° | — | — |
| 1997 | 73° | 49° | 61° | 0.1" | — |
| 1996 | 66° | 43° | 54° | 0.46" | — |
| 1995 | 59° | 35° | 47° | — | — |
| 1994 | 60° | 37° | 49° | — | — |
| 1993 | 64° | 39° | 52° | 0.46" | — |
| 1992 | 70° | 49° | 59° | 0.08" | — |
| 1991 | 55° | 35° | 45° | 0.61" | — |
| 1990 | 77° | 49° | 63° | — | — |
| 1989 | 77° | 42° | 60° | — | — |
| 1988 | 55° | 49° | 52° | 0.1" | — |
| 1987 | 70° | 43° | 56° | — | — |
| 1986 | 63° | 40° | 51° | 0.18" | — |
| 1985 | 74° | 41° | 57° | — | — |
| 1984warmest | 81° | 48° | 64° | — | — |
| 1983 | 68° | 34° | 51° | — | — |
| 1982 | 49° | 36° | 42° | 1.45" | — |
| 1981 | 73° | 40° | 56° | — | — |
| 1980 | 59° | 38° | 48° | 0.33" | — |
| 1979 | 58° | 43° | 50° | 0.03" | — |
| 1978 | 52° | 41° | 46° | 0.66" | — |
| 1977 | 57° | 44° | 51° | 0.25" | — |
| 1976 | 50° | 33° | 42° | 0.33" | — |
| 1975 | 54° | 37° | 45° | — | — |
| 1974 | 60° | 43° | 51° | — | — |
| 1973 | 61° | 43° | 52° | — | — |
| 1972 | 54° | 41° | 47° | 0.05" | — |
| 1971 | 55° | 38° | 46° | 0.05" | — |
55 years of data from HILLSBORO