Weather on December 17
Hillsboro, OR
55 Years of Data
Avg High
47°F
Avg Low
34°F
Warmest
1999
57°F avg
Coldest
2008
28°F avg
About This Date
December 17th in Hillsboro, OR typically brings chilly winter weather, with average highs around 47°F and lows near 34°F. Over 55 years of records, the warmest December 17th was in 1999 (57°F average), while the coldest was 2008 (28°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 58% of December 17th dates historically, with the wettest December 17th recording 4.45" of rain. The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for December 17th in Hillsboro, OR? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 42° | 50° | 0.2" | — |
| 2024 | 58° | 45° | 51° | 2.08" | — |
| 2023 | 50° | 26° | 38° | — | — |
| 2022 | 41° | 19° | 30° | — | — |
| 2021 | 42° | 34° | 38° | 0.3" | — |
| 2020 | 52° | 38° | 45° | 0.05" | — |
| 2019 | 43° | 29° | 36° | — | — |
| 2018 | 51° | 43° | 47° | 1.07" | — |
| 2017 | 47° | 38° | 42° | 0.03" | — |
| 2016 | 33° | 22° | 28° | — | — |
| 2015 | 53° | 39° | 46° | 4.45" | — |
| 2014 | 47° | 35° | 41° | 0.18" | — |
| 2013 | 37° | 33° | 35° | — | — |
| 2012 | 48° | 34° | 41° | 0.94" | — |
| 2011 | 43° | 33° | 38° | — | — |
| 2010 | 46° | 27° | 37° | — | — |
| 2009 | 50° | 36° | 43° | 0.15" | — |
| 2008coldest | 36° | 20° | 28° | 0.89" | — |
| 2007 | 44° | 38° | 41° | 0.46" | — |
| 2006 | 40° | 22° | 31° | 0.03" | — |
| 2005 | 36° | 23° | 29° | — | — |
| 2004 | 51° | 37° | 44° | — | — |
| 2003 | 50° | 34° | 42° | — | — |
| 2002 | 49° | 39° | 44° | 0.46" | — |
| 2001 | 52° | 32° | 42° | 1.91" | — |
| 2000 | 49° | 27° | 38° | 0.2" | — |
| 1999warmest | 61° | 54° | 57° | 0.94" | — |
| 1998 | 50° | 35° | 43° | — | — |
| 1997 | 50° | 33° | 42° | 0.28" | — |
| 1996 | 45° | 29° | 37° | — | — |
| 1995 | 43° | 39° | 41° | 1.27" | — |
| 1994 | 58° | 45° | 51° | 0.64" | — |
| 1993 | 49° | 28° | 38° | — | — |
| 1992 | 40° | 31° | 35° | 1.83" | — |
| 1991 | 43° | 25° | 34° | — | — |
| 1990 | 42° | 30° | 36° | — | — |
| 1989 | 49° | 26° | 37° | — | — |
| 1988 | 52° | 27° | 39° | — | — |
| 1987 | 37° | 29° | 33° | 0.1" | — |
| 1986 | 46° | 28° | 37° | — | — |
| 1985 | 45° | 26° | 35° | — | — |
| 1984 | 40° | 35° | 37° | 0.05" | — |
| 1983 | 40° | 31° | 35° | — | — |
| 1982 | 54° | 44° | 49° | 2.01" | — |
| 1981 | 53° | 36° | 44° | — | — |
| 1980 | 62° | 34° | 48° | — | — |
| 1979 | 43° | 34° | 38° | 0.13" | — |
| 1978 | 43° | 32° | 37° | 0.23" | — |
| 1977 | 51° | 39° | 45° | 0.18" | — |
| 1976 | 44° | 39° | 42° | 0.05" | — |
| 1975 | 49° | 33° | 41° | — | — |
| 1974 | 51° | 35° | 43° | 0.3" | — |
| 1973 | 53° | 45° | 49° | 1.63" | — |
| 1972 | 49° | 34° | 41° | 2.31" | — |
| 1971 | 47° | 42° | 44° | 0.03" | — |
55 years of data from HILLSBORO