Weather on October 18
Portland, OR
55 Years of Data
Avg High
63°F
Avg Low
47°F
Warmest
1978
65°F avg
Coldest
1984
45°F avg
About This Date
October 18th in Portland, OR typically brings mild fall weather, with average highs around 63°F and lows near 47°F. Over 55 years of records, the warmest October 18th was in 1978 (65°F average), while the coldest was 1984 (45°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 45% of October 18th dates historically, with the wettest October 18th recording 3.56" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for October 18th in Portland, OR? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 44° | 52° | 0.81" | — |
| 2024 | 56° | 43° | 49° | 0.05" | — |
| 2023 | 72° | 47° | 59° | — | — |
| 2022 | 69° | 51° | 60° | — | — |
| 2021 | 62° | 45° | 53° | 0.03" | — |
| 2020 | 66° | 53° | 60° | — | — |
| 2019 | 56° | 48° | 52° | 0.36" | — |
| 2018 | 70° | 47° | 58° | — | — |
| 2017 | 63° | 48° | 55° | 0.1" | — |
| 2016 | 57° | 47° | 52° | 0.05" | — |
| 2015 | 63° | 56° | 59° | 0.25" | — |
| 2014 | 72° | 52° | 62° | 0.1" | — |
| 2013 | 69° | 46° | 58° | — | — |
| 2012 | 69° | 44° | 57° | 0.13" | — |
| 2011 | 72° | 48° | 60° | — | — |
| 2010 | 64° | 42° | 53° | — | — |
| 2009 | 64° | 55° | 60° | 0.05" | — |
| 2008 | 60° | 40° | 50° | 0.03" | — |
| 2007 | 63° | 45° | 54° | 0.25" | — |
| 2006 | 56° | 49° | 52° | 0.18" | — |
| 2005 | 67° | 55° | 61° | — | — |
| 2004 | 61° | 49° | 55° | 0.48" | — |
| 2003 | 71° | 52° | 61° | — | — |
| 2002 | 59° | 47° | 53° | — | — |
| 2001 | 61° | 41° | 51° | — | — |
| 2000 | 65° | 55° | 60° | 0.28" | — |
| 1999 | 71° | 46° | 59° | — | — |
| 1998 | 59° | 43° | 51° | — | — |
| 1997 | 59° | 46° | 53° | — | — |
| 1996 | 56° | 40° | 48° | 2.57" | — |
| 1995 | 59° | 44° | 52° | — | — |
| 1994 | 58° | 39° | 48° | — | — |
| 1993 | 58° | 44° | 51° | — | — |
| 1992 | 64° | 55° | 60° | 0.03" | — |
| 1991 | 67° | 45° | 56° | — | — |
| 1990 | 56° | 47° | 51° | 2.41" | — |
| 1989 | 56° | 52° | 54° | 0.13" | — |
| 1988 | 60° | 48° | 54° | 0.13" | — |
| 1987 | 66° | 46° | 56° | — | — |
| 1986 | 61° | 47° | 54° | 0.03" | — |
| 1985 | 64° | 44° | 54° | — | — |
| 1984coldest | 51° | 40° | 45° | 0.28" | — |
| 1983 | 58° | 43° | 50° | — | — |
| 1982 | 58° | 39° | 48° | — | — |
| 1981 | 70° | 45° | 57° | — | — |
| 1980 | 63° | 43° | 53° | — | — |
| 1979 | 53° | 48° | 51° | 3.56" | — |
| 1978warmest | 79° | 52° | 65° | — | — |
| 1977 | 65° | 47° | 56° | — | — |
| 1976 | 66° | 50° | 58° | — | — |
| 1975 | 60° | 46° | 53° | 0.03" | — |
| 1974 | 78° | 47° | 62° | — | — |
| 1973 | 69° | 48° | 59° | — | — |
| 1972 | 64° | 45° | 54° | — | — |
| 1971 | 55° | 47° | 51° | 0.81" | — |
55 years of data from PORTLAND KGW-TV