Weather on October 21
Portland, OR
55 Years of Data
Avg High
61°F
Avg Low
47°F
Warmest
2003
70°F avg
Coldest
1996
45°F avg
About This Date
October 21st in Portland, OR typically brings mild fall weather, with average highs around 61°F and lows near 47°F. Over 55 years of records, the warmest October 21st was in 2003 (70°F average), while the coldest was 1996 (45°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 47% of October 21st dates historically, with the wettest October 21st recording 4.09" of rain. 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 October 21st in Portland, OR? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 63° | 44° | 53° | — | — |
| 2024 | 59° | 49° | 54° | 1.02" | — |
| 2023 | 59° | 54° | 56° | 0.3" | — |
| 2022 | 56° | 47° | 51° | 1.4" | — |
| 2021 | 69° | 50° | 60° | 1.57" | — |
| 2020 | 57° | 45° | 51° | 0.03" | — |
| 2019 | 60° | 52° | 56° | — | — |
| 2018 | 67° | 45° | 56° | — | — |
| 2017 | 59° | 45° | 52° | 4.09" | — |
| 2016 | 61° | 51° | 56° | 1.27" | — |
| 2015 | 66° | 49° | 57° | — | — |
| 2014 | 60° | 53° | 57° | 0.15" | — |
| 2013 | 68° | 44° | 56° | — | — |
| 2012 | 53° | 42° | 48° | 0.13" | — |
| 2011 | 62° | 51° | 57° | — | — |
| 2010 | 61° | 47° | 54° | — | — |
| 2009 | 63° | 51° | 57° | 0.66" | — |
| 2008 | 55° | 41° | 48° | — | — |
| 2007 | 58° | 48° | 53° | — | — |
| 2006 | 70° | 45° | 57° | — | — |
| 2005 | 71° | 48° | 60° | — | — |
| 2004 | 57° | 47° | 52° | — | — |
| 2003warmest | 80° | 60° | 70° | — | — |
| 2002 | 61° | 54° | 57° | — | — |
| 2001 | 58° | 41° | 49° | 0.58" | — |
| 2000 | 56° | 45° | 50° | 0.03" | — |
| 1999 | 73° | 46° | 60° | — | — |
| 1998 | 72° | 51° | 61° | — | — |
| 1997 | 61° | 42° | 51° | — | — |
| 1996coldest | 52° | 38° | 45° | 0.46" | — |
| 1995 | 56° | 47° | 51° | 0.2" | — |
| 1994 | 61° | 50° | 55° | 0.2" | — |
| 1993 | 64° | 52° | 58° | — | — |
| 1992 | 62° | 55° | 59° | 0.08" | — |
| 1991 | 60° | 49° | 54° | — | — |
| 1990 | 54° | 47° | 50° | 3.12" | — |
| 1989 | 56° | 52° | 54° | 1.04" | — |
| 1988 | 61° | 51° | 56° | 0.23" | — |
| 1987 | 66° | 44° | 55° | — | — |
| 1986 | 65° | 47° | 56° | — | — |
| 1985 | 53° | 44° | 49° | 0.56" | — |
| 1984 | 54° | 39° | 46° | — | — |
| 1983 | 62° | 48° | 55° | 0.05" | — |
| 1982 | 55° | 47° | 51° | 0.99" | — |
| 1981 | 65° | 43° | 54° | — | — |
| 1980 | 60° | 43° | 51° | — | — |
| 1979 | 60° | 43° | 51° | — | — |
| 1978 | 58° | 38° | 48° | — | — |
| 1977 | 67° | 48° | 57° | — | — |
| 1976 | 62° | 40° | 51° | — | — |
| 1975 | 53° | 45° | 49° | 1.78" | — |
| 1974 | 55° | 40° | 47° | — | — |
| 1973 | 59° | 52° | 55° | 2.06" | — |
| 1972 | 55° | 48° | 52° | 0.61" | — |
| 1971 | 58° | 43° | 50° | 0.05" | — |
55 years of data from PORTLAND KGW-TV