Weather on December 28
Hillsboro, OR
55 Years of Data
Avg High
45°F
Avg Low
33°F
Warmest
1998
52°F avg
Coldest
1978
27°F avg
About This Date
December 28th in Hillsboro, OR typically brings chilly winter weather, with average highs around 45°F and lows near 33°F. Over 55 years of records, the warmest December 28th was in 1998 (52°F average), while the coldest was 1978 (27°F) — a 25°F range across recorded history. Precipitation has occurred on 73% of recorded December 28th dates, with snow falling 2% of the time (heaviest snowfall: 2"). The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for December 28th in Hillsboro, OR? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 44° | 29° | 36° | — | — |
| 2024 | 54° | 46° | 50° | 0.33" | — |
| 2023 | 50° | 41° | 46° | 0.1" | — |
| 2022 | 48° | 36° | 42° | 0.03" | — |
| 2021 | 34° | 30° | 32° | 0.13" | — |
| 2020 | 48° | 26° | 37° | — | — |
| 2019 | 45° | 40° | 42° | — | — |
| 2018 | 45° | 41° | 43° | 0.46" | — |
| 2017 | 51° | 37° | 44° | 1.12" | — |
| 2016 | 38° | 31° | 35° | 0.03" | — |
| 2015 | 41° | 34° | 37° | 0.13" | — |
| 2014 | 48° | 33° | 41° | 0.1" | — |
| 2013 | 45° | 32° | 38° | — | — |
| 2012 | 43° | 34° | 38° | 0.08" | — |
| 2011 | 55° | 49° | 52° | 1.96" | — |
| 2010 | 47° | 37° | 42° | 1.83" | — |
| 2009 | 46° | 25° | 36° | — | — |
| 2008 | 51° | 37° | 44° | 0.25" | — |
| 2007 | 43° | 31° | 37° | 0.28" | — |
| 2006 | 44° | 23° | 34° | 0.08" | — |
| 2005 | 53° | 42° | 48° | 2.69" | — |
| 2004 | 49° | 29° | 39° | — | — |
| 2003 | 40° | 30° | 35° | 1.3" | — |
| 2002 | 52° | 41° | 46° | 0.1" | — |
| 2001 | 42° | 28° | 35° | 0.99" | — |
| 2000 | 51° | 32° | 42° | — | — |
| 1999 | 46° | 28° | 37° | — | — |
| 1998warmest | 53° | 51° | 52° | 1.22" | — |
| 1997 | 52° | 43° | 47° | 0.08" | — |
| 1996 | 40° | 32° | 36° | 5" | — |
| 1995 | 43° | 35° | 39° | 1.6" | — |
| 1994 | 48° | 28° | 38° | — | — |
| 1993 | 42° | 26° | 34° | — | — |
| 1992 | 43° | 37° | 40° | 1.65" | — |
| 1991 | 49° | 39° | 44° | 0.13" | — |
| 1990 | 45° | 31° | 38° | 0.76" | — |
| 1989 | 34° | 26° | 30° | 0.18" | — |
| 1988 | 42° | 27° | 34° | — | — |
| 1987 | 35° | 29° | 32° | 0.03" | — |
| 1986 | 50° | 30° | 40° | 0.03" | — |
| 1985 | 40° | 19° | 29° | — | — |
| 1984 | 44° | 30° | 37° | 0.43" | — |
| 1983 | 36° | 20° | 28° | 0.03" | — |
| 1982 | 45° | 26° | 35° | — | — |
| 1981 | 42° | 33° | 38° | 0.86" | — |
| 1980 | 60° | 35° | 48° | 0.03" | — |
| 1979 | 52° | 29° | 40° | — | — |
| 1978coldest | 36° | 18° | 27° | — | — |
| 1977 | 40° | 34° | 37° | 0.33" | — |
| 1976 | 39° | 29° | 34° | 0.08" | — |
| 1975 | 49° | 42° | 45° | 0.18" | — |
| 1974 | 36° | 31° | 33° | 0.1" | — |
| 1973 | 49° | 39° | 44° | 0.41" | — |
| 1972 | 47° | 37° | 42° | 0.2" | — |
| 1971 | 32° | 25° | 28° | 0.64" | 2" |
55 years of data from HILLSBORO