Weather on December 21
Portland, OR
55 Years of Data
Avg High
45°F
Avg Low
36°F
Warmest
1972
56°F avg
Coldest
1990
15°F avg
About This Date
December 21st 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 21st was in 1972 (56°F average), while the coldest was 1990 (15°F) — a 41°F range across recorded history. Precipitation has occurred on 65% of recorded December 21st dates, with snow falling 4% of the time (heaviest snowfall: 2"). The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Portland, OR? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 46° | 40° | 43° | 0.58" | — |
| 2024 | 54° | 46° | 50° | 0.33" | — |
| 2023 | 47° | 36° | 41° | — | — |
| 2022 | 40° | 24° | 32° | — | — |
| 2021 | 43° | 34° | 38° | 0.2" | — |
| 2020 | 58° | 39° | 48° | 0.71" | — |
| 2019 | 52° | 44° | 48° | 2.79" | — |
| 2018 | 47° | 37° | 42° | — | — |
| 2017 | 36° | 29° | 32° | — | — |
| 2016 | 40° | 31° | 35° | — | — |
| 2015 | 50° | 40° | 45° | 2.36" | — |
| 2014 | 57° | 51° | 54° | 0.25" | — |
| 2013 | 53° | 43° | 48° | 0.18" | — |
| 2012 | 47° | 34° | 40° | 0.15" | — |
| 2011 | 41° | 34° | 37° | — | — |
| 2010 | 44° | 36° | 40° | — | — |
| 2009 | 53° | 38° | 45° | 0.94" | — |
| 2008 | 23° | 18° | 20° | — | 2" |
| 2007 | 43° | 36° | 39° | — | — |
| 2006 | 51° | 35° | 43° | 1.55" | — |
| 2005 | 54° | 39° | 46° | 2.03" | — |
| 2004 | 42° | 35° | 39° | 0.08" | — |
| 2003 | 49° | 43° | 46° | 0.51" | — |
| 2002 | 43° | 40° | 41° | 0.79" | — |
| 2001 | 42° | 36° | 39° | — | — |
| 2000 | 40° | 36° | 38° | 0.89" | — |
| 1999 | 52° | 42° | 47° | 0.23" | — |
| 1998 | 24° | 17° | 21° | — | 0.5" |
| 1997 | 47° | 35° | 41° | 0.05" | — |
| 1996 | 42° | 39° | 41° | 0.64" | — |
| 1995 | 48° | 42° | 45° | — | — |
| 1994 | 54° | 43° | 48° | 0.15" | — |
| 1993 | 45° | 33° | 39° | — | — |
| 1992 | 49° | 42° | 45° | 0.36" | — |
| 1991 | 42° | 37° | 40° | 2.46" | — |
| 1990coldest | 19° | 11° | 15° | — | — |
| 1989 | 47° | 32° | 39° | — | — |
| 1988 | 44° | 38° | 41° | 0.53" | — |
| 1987 | 42° | 38° | 40° | 0.15" | — |
| 1986 | 46° | 39° | 43° | 0.13" | — |
| 1985 | 38° | 29° | 33° | — | — |
| 1984 | 44° | 28° | 36° | 0.51" | — |
| 1983 | 22° | 15° | 18° | — | — |
| 1982 | 48° | 36° | 42° | 1.37" | — |
| 1981 | 48° | 38° | 43° | 0.03" | — |
| 1980 | 60° | 42° | 51° | 3.25" | — |
| 1979 | 49° | 40° | 44° | 0.58" | — |
| 1978 | 45° | 39° | 42° | 0.43" | — |
| 1977 | 47° | 35° | 41° | — | — |
| 1976 | 38° | 31° | 34° | — | — |
| 1975 | 41° | 35° | 38° | 0.03" | — |
| 1974 | 56° | 35° | 45° | 1.85" | — |
| 1973 | 55° | 42° | 49° | 0.64" | — |
| 1972warmest | 60° | 52° | 56° | 3.43" | — |
| 1971 | 44° | 39° | 42° | 4.14" | — |
55 years of data from PORTLAND KGW-TV