Weather on December 30
Portland, OR
55 Years of Data
Avg High
45°F
Avg Low
36°F
Warmest
1980
54°F avg
Coldest
1978
20°F avg
About This Date
December 30th in Portland, OR typically brings chilly winter weather, with average highs around 45°F and lows near 36°F. Over 55 years of records, the warmest December 30th was in 1980 (54°F average), while the coldest was 1978 (20°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 69% of December 30th dates historically, with the wettest December 30th recording 4.37" of rain. The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for December 30th in Portland, OR? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 47° | 37° | 42° | — | — |
| 2024 | 48° | 40° | 44° | 0.25" | — |
| 2023 | 52° | 44° | 48° | 0.23" | — |
| 2022 | 52° | 43° | 47° | 0.89" | — |
| 2021 | 41° | 27° | 34° | 1.02" | — |
| 2020 | 48° | 38° | 43° | 1.55" | — |
| 2019 | 47° | 40° | 43° | 0.03" | — |
| 2018 | 51° | 38° | 44° | 0.2" | — |
| 2017 | 52° | 39° | 45° | 0.03" | — |
| 2016 | 43° | 34° | 38° | — | — |
| 2015 | 42° | 31° | 36° | 0.05" | — |
| 2014 | 34° | 27° | 30° | — | — |
| 2013 | 41° | 36° | 38° | — | — |
| 2012 | 43° | 31° | 37° | — | — |
| 2011 | 53° | 37° | 45° | 2.44" | — |
| 2010 | 35° | 28° | 32° | — | — |
| 2009 | 44° | 33° | 39° | 0.03" | — |
| 2008 | 43° | 36° | 39° | 0.3" | — |
| 2007 | 43° | 35° | 39° | 0.66" | — |
| 2006 | 41° | 35° | 38° | — | — |
| 2005 | 50° | 41° | 46° | 4.37" | — |
| 2004 | 47° | 38° | 42° | — | — |
| 2003 | 33° | 28° | 31° | 0.97" | — |
| 2002 | 49° | 41° | 45° | 3.66" | — |
| 2001 | 46° | 40° | 43° | 0.08" | — |
| 2000 | 48° | 37° | 43° | — | — |
| 1999 | 55° | 46° | 51° | 0.25" | — |
| 1998 | 55° | 47° | 51° | 0.36" | — |
| 1997 | 46° | 37° | 42° | — | — |
| 1996 | 54° | 46° | 50° | 1.91" | — |
| 1995 | 57° | 43° | 50° | 1.14" | — |
| 1994 | 45° | 37° | 41° | — | — |
| 1993 | 48° | 37° | 43° | 1.42" | — |
| 1992 | 36° | 31° | 33° | 0.13" | — |
| 1991 | 49° | 39° | 44° | 0.15" | — |
| 1990 | 27° | 14° | 20° | — | — |
| 1989 | 44° | 37° | 41° | — | — |
| 1988 | 50° | 41° | 46° | 0.66" | — |
| 1987 | 39° | 29° | 34° | 0.41" | — |
| 1986 | 48° | 37° | 43° | 0.05" | — |
| 1985 | 35° | 26° | 31° | — | — |
| 1984 | 45° | 38° | 41° | 0.46" | — |
| 1983 | 41° | 34° | 37° | 0.36" | — |
| 1982 | 40° | 26° | 33° | — | — |
| 1981 | 43° | 31° | 37° | 0.03" | — |
| 1980warmest | 62° | 47° | 54° | 0.13" | — |
| 1979 | 44° | 38° | 41° | 0.36" | — |
| 1978coldest | 24° | 15° | 20° | — | — |
| 1977 | 40° | 33° | 36° | 0.1" | — |
| 1976 | 49° | 39° | 44° | — | — |
| 1975 | 45° | 36° | 40° | 0.61" | — |
| 1974 | 47° | 34° | 40° | 0.81" | — |
| 1973 | 46° | 39° | 43° | 0.05" | — |
| 1972 | 48° | 40° | 44° | 0.46" | — |
| 1971 | 45° | 36° | 40° | 0.28" | — |
55 years of data from PORTLAND KGW-TV