Weather on December 9
Hillsboro, OR
55 Years of Data
Avg High
46°F
Avg Low
34°F
Warmest
2014
53°F avg
Coldest
1972
15°F avg
About This Date
December 9th in Hillsboro, OR typically brings chilly winter weather, with average highs around 46°F and lows near 34°F. Over 55 years of records, the warmest December 9th was in 2014 (53°F average), while the coldest was 1972 (15°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 67% of December 9th dates historically, with the wettest December 9th recording 3.23" of rain. The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for December 9th 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 | 57° | 46° | 52° | 3.05" | — |
| 2024 | 50° | 29° | 40° | — | — |
| 2023 | 45° | 31° | 38° | 1.42" | — |
| 2022 | 48° | 35° | 42° | 2.26" | — |
| 2021 | 43° | 29° | 36° | 0.2" | — |
| 2020 | 50° | 35° | 43° | — | — |
| 2019 | 49° | 34° | 41° | — | — |
| 2018 | 41° | 37° | 39° | 0.89" | — |
| 2017 | 47° | 23° | 35° | — | — |
| 2016 | 35° | 31° | 33° | 1.85" | — |
| 2015 | 56° | 45° | 50° | 0.76" | — |
| 2014warmest | 60° | 47° | 53° | 1.4" | — |
| 2013 | 27° | 12° | 20° | — | — |
| 2012 | 46° | 40° | 43° | 0.18" | — |
| 2011 | 48° | 23° | 36° | — | — |
| 2010 | 51° | 41° | 46° | 3.12" | — |
| 2009 | 31° | 7° | 19° | — | — |
| 2008 | 43° | 38° | 40° | — | — |
| 2007 | 35° | 23° | 29° | 0.05" | — |
| 2006 | 50° | 36° | 43° | 0.61" | — |
| 2005 | 45° | 23° | 34° | — | — |
| 2004 | 57° | 40° | 48° | 0.86" | — |
| 2003 | 44° | 35° | 40° | 0.33" | — |
| 2002 | 50° | 29° | 39° | — | — |
| 2001 | 43° | 34° | 38° | 0.25" | — |
| 2000 | 43° | 35° | 39° | 0.05" | — |
| 1999 | 51° | 43° | 47° | 0.23" | — |
| 1998 | 46° | 37° | 42° | — | — |
| 1997 | 47° | 40° | 43° | 0.33" | — |
| 1996 | 51° | 41° | 46° | 0.79" | — |
| 1995 | 36° | 31° | 33° | 1.78" | — |
| 1994 | 45° | 35° | 40° | 0.58" | — |
| 1993 | 50° | 44° | 47° | 3.23" | — |
| 1992 | 47° | 36° | 41° | 1.17" | — |
| 1991 | 49° | 42° | 45° | 0.13" | — |
| 1990 | 48° | 40° | 44° | 0.08" | — |
| 1989 | 56° | 38° | 47° | 0.15" | — |
| 1988 | 47° | 40° | 43° | 0.08" | — |
| 1987 | 48° | 41° | 45° | 2.46" | — |
| 1986 | 46° | 29° | 37° | — | — |
| 1985 | 49° | 27° | 38° | — | — |
| 1984 | 44° | 34° | 39° | 0.41" | — |
| 1983 | 51° | 42° | 47° | 0.51" | — |
| 1982 | 43° | 27° | 35° | — | — |
| 1981 | 49° | 42° | 45° | 0.18" | — |
| 1980 | 40° | 23° | 31° | — | — |
| 1979 | 44° | 38° | 41° | — | — |
| 1978 | 44° | 32° | 38° | 0.38" | — |
| 1977 | 40° | 33° | 36° | 0.38" | — |
| 1976 | 47° | 33° | 40° | 0.08" | — |
| 1975 | 48° | 44° | 46° | 0.05" | — |
| 1974 | 53° | 43° | 48° | 0.18" | — |
| 1973 | 54° | 31° | 42° | — | — |
| 1972coldest | 26° | 3° | 15° | — | — |
| 1971 | 50° | 36° | 43° | 1.14" | — |
55 years of data from HILLSBORO