Weather on December 30
Hillsboro, OR
55 Years of Data
Avg High
44°F
Avg Low
33°F
Warmest
1998
52°F avg
Coldest
1990
17°F avg
About This Date
December 30th in Hillsboro, OR typically brings chilly winter weather, with average highs around 44°F and lows near 33°F. Over 55 years of records, the warmest December 30th was in 1998 (52°F average), while the coldest was 1990 (17°F) — a 35°F range across recorded history. Precipitation has occurred on 60% of recorded December 30th dates, with snow falling 2% of the time (heaviest snowfall: 2.3"). 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 30th 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 | 50° | 27° | 38° | — | — |
| 2024 | 48° | 33° | 41° | 0.23" | — |
| 2023 | 52° | 41° | 46° | 0.13" | — |
| 2022 | 51° | 43° | 47° | 0.41" | — |
| 2021 | 42° | 27° | 35° | 0.56" | — |
| 2020 | 47° | 36° | 41° | 1.07" | — |
| 2019 | 48° | 38° | 43° | — | — |
| 2018 | 48° | 33° | 41° | 0.28" | — |
| 2017 | 50° | 30° | 40° | — | — |
| 2016 | 44° | 27° | 36° | — | — |
| 2015 | 38° | 26° | 32° | — | — |
| 2014 | 35° | 21° | 28° | — | — |
| 2013 | 42° | 31° | 37° | — | — |
| 2012 | 44° | 24° | 34° | — | — |
| 2011 | 53° | 30° | 42° | 0.64" | — |
| 2010 | 32° | 28° | 30° | — | — |
| 2009 | 38° | 31° | 35° | 0.08" | — |
| 2008 | 41° | 30° | 36° | 0.15" | — |
| 2007 | 44° | 29° | 37° | 0.71" | — |
| 2006 | 44° | 25° | 35° | — | — |
| 2005 | 52° | 43° | 47° | 2.59" | — |
| 2004 | 47° | 33° | 40° | 0.1" | — |
| 2003 | 33° | 26° | 30° | 0.03" | — |
| 2002 | 48° | 33° | 41° | 1.14" | — |
| 2001 | 41° | 31° | 36° | — | — |
| 2000 | 48° | 36° | 42° | — | — |
| 1999 | 40° | 37° | 38° | 0.15" | — |
| 1998warmest | 56° | 48° | 52° | 0.36" | — |
| 1997 | 50° | 37° | 44° | — | — |
| 1996 | 53° | 48° | 51° | 1.83" | — |
| 1995 | 57° | 45° | 51° | 0.51" | — |
| 1994 | 47° | 37° | 42° | — | — |
| 1993 | 41° | 30° | 36° | — | — |
| 1992 | 41° | 30° | 36° | 0.18" | — |
| 1991 | 46° | 37° | 42° | 0.13" | — |
| 1990coldest | 22° | 12° | 17° | — | — |
| 1989 | 43° | 37° | 40° | — | — |
| 1988 | 49° | 40° | 44° | 1.22" | — |
| 1987 | 38° | 22° | 30° | — | — |
| 1986 | 52° | 35° | 43° | 0.23" | — |
| 1985 | 39° | 28° | 34° | — | — |
| 1984 | 45° | 39° | 42° | 1.55" | — |
| 1983 | 33° | 31° | 32° | 4.32" | — |
| 1982 | 40° | 23° | 31° | — | — |
| 1981 | 40° | 29° | 34° | — | — |
| 1980 | 48° | 40° | 44° | 1.12" | — |
| 1979 | 50° | 38° | 44° | 0.3" | — |
| 1978 | 25° | 15° | 20° | 0.25" | 2.3" |
| 1977 | 47° | 38° | 42° | 0.13" | — |
| 1976 | 50° | 29° | 39° | — | — |
| 1975 | 47° | 35° | 41° | 0.86" | — |
| 1974 | 41° | 32° | 37° | 0.15" | — |
| 1973 | 44° | 34° | 39° | 0.05" | — |
| 1972 | 49° | 37° | 43° | 0.48" | — |
| 1971 | 42° | 33° | 38° | 0.05" | — |
55 years of data from HILLSBORO